Other equipment · Phaser family

Xerox Phaser 8200: troubleshooting and error codes

The ServiceForge knowledge base holds 151 documented symptoms for the Xerox Phaser 8200, with 341 ranked causes, 227 diagnostic checks with test points and expected values, and 218 error codes. Each symptom below shows its causes and the first check; the rest is one connection away. Connect ServiceForge to your AI

Symptoms

Incomplete image transfer to paper

Part of the image remains on the drum instead of fully transferring to paper, usually appearing on chase page or next print

Ranked causes

1. Insufficient or non-uniform drum oiling (common)
2. Wiper blade in drum maintenance drawer damaged (common)
3. Improper media selection (occasional)
4. Drum maintenance cam roller or electric clutch malfunction (occasional)
5. Drum temperature too high (occasional)
6. Paper preheater temperature incorrect (occasional)
7. Printhead defective (rare)

First check

Inspect media quality and weight

Test point: Paper stock
Expected: Smooth paper of appropriate weight

6 more checks with pass and fail actions, 7 corrective actions, and part numbers are in ServiceForge. Connect ServiceForge to your AI

Paper path timing out of range

Paper Path Timing tests (ID #17 and #4) report abnormal sensor-to-sensor timing indicating feeding or skew issues

Ranked causes

1. Paper not being picked reliably (common)
2. Paper feeding not smooth through trays (common)
3. Pick roller contaminated or worn (occasional)
4. Excessive paper skew or damage (occasional)
5. Front door deskew fingers damaged (occasional)
6. Exit rollers slipping or exit flag worn (occasional)
7. Transfix roller dirty or improperly oiled (occasional)

First check

Measure timing from Tray 3 pick motor to tray 3 pick flag (ID#17 R#0)

Test point: Tray 3 pick motor, tray 3 pick flag
Expected: > 850 ms, greater than

6 more checks with pass and fail actions, 7 corrective actions, and part numbers are in ServiceForge. Connect ServiceForge to your AI

Uneven cyan fill

Non-uniform fill throughout the print with possible wrinkling or paper deformity

Ranked causes

1. Weak jets (unknown)
2. Uneven drum heating (unknown)
3. Wrinkling from print media (unknown)
4. Drum maintenance tray fouled (unknown)
5. Drum-temperature sensor debris or misalignment (unknown)
6. Incorrect transfix pressure (unknown)
7. Drum/transfix assembly failure (rare)

5 corrective actions and part numbers are in ServiceForge. Connect ServiceForge to your AI

Uneven magenta fill

Non-uniform fill throughout the print with possible wrinkling or paper deformity

Ranked causes

1. Weak jets (unknown)
2. Uneven drum heating (unknown)
3. Wrinkling from print media (unknown)
4. Drum maintenance tray fouled (unknown)
5. Drum-temperature sensor debris or misalignment (unknown)
6. Incorrect transfix pressure (unknown)
7. Drum/transfix assembly failure (rare)

5 corrective actions and part numbers are in ServiceForge. Connect ServiceForge to your AI

Weak or missing jets in print output

Service Test 2 shows weak or missing jets during print; observable as gaps or thin lines in color output

Ranked causes

1. Contaminated wiper blade (common)
2. Debris in paper path scraping ink from drum (common)
3. Inadequate cleaning cycles (occasional)
4. Cap/Wipe/Purge (C/W/P) out of alignment (occasional)
5. Contaminated C/W/P with wax streaks (occasional)
6. C/W/P wiper gasket separation or pitting (occasional)
7. Defective printhead (occasional)

First check

Print Service Test 2 and observe for weak or missing jets

Test point: printer output
Expected: All jets firing evenly with full color intensity

8 more checks with pass and fail actions, 7 corrective actions, and part numbers are in ServiceForge. Connect ServiceForge to your AI

Black solid fill uneven or wrinkled

Print shows non-uniform fill across the page, wrinkling, or paper deformity in black solid fill test print

Ranked causes

1. Weak jets or uneven drum heating (common)
2. Drum maintenance tray worn, causing streaking (common)
3. Paper type incompatible (occasional)
4. Drum temperature sensor debris or misalignment (occasional)
5. Transfix pressure incorrect (occasional)
6. Drum/transfix assembly failure (rare)

5 corrective actions and part numbers are in ServiceForge. Connect ServiceForge to your AI

Calibration: Yellow Solid Fill

Print shows non-uniform fills with possible wrinkling or paper deformity; should show even, uniform fills throughout

Ranked causes

1. Weak jets or uneven drum heating (common)
2. Wrinkling from print media incompatibility (occasional)
3. Streaking from worn drum maintenance tray (occasional)
4. Drum temperature sensor debris or improper contact (occasional)
5. Incorrect transfix pressure (occasional)
6. Defective drum or transfix assembly (rare)

First check

Visual inspection of print

Test point: Yellow solid fill print
Expected: Even, uniform fills throughout with no wrinkling or paper deformity

4 more checks with pass and fail actions, 5 corrective actions, and part numbers are in ServiceForge. Connect ServiceForge to your AI

Red solid fill uneven or wrinkled

Print shows non-uniform fill across the page, wrinkling, or paper deformity in red solid fill test print

Ranked causes

1. Weak jets or uneven drum heating (common)
2. Drum maintenance tray worn, causing streaking (common)
3. Paper type incompatible (occasional)
4. Drum temperature sensor debris or misalignment (occasional)
5. Transfix pressure incorrect (occasional)
6. Drum/transfix assembly failure (rare)

5 corrective actions and part numbers are in ServiceForge. Connect ServiceForge to your AI

Wrinkling on print

Print damage usually in corners with solid fills, paper appears wrinkled or creased

Ranked causes

1. Media moisture absorption in high-humidity environment (common)
2. Improper media weight or type (common)
3. Deskew fingers damaged or missing (occasional)
4. Maintenance drawer wiper blade damaged (occasional)
5. Transfix roller spring pressure incorrect (occasional)
6. Drum or transfix assembly defective (rare)

First check

Inspect paper for moisture damage

Test point: Media stock
Expected: Paper not warped or curled

6 more checks with pass and fail actions, 6 corrective actions, and part numbers are in ServiceForge. Connect ServiceForge to your AI

Blue solid fill uneven or wrinkled

Print shows non-uniform fill with wrinkling or paper deformity

Ranked causes

1. Weak jets (common)
2. Uneven drum heating (common)
3. Drum temperature sensor debris or poor contact (occasional)
4. Incorrect transfix pressure (occasional)
5. Drum/transfix assembly defective (rare)

First check

Inspect print for uniform fill and absence of wrinkling

Test point: Blue solid fill test print
Expected: Even, uniform fills throughout print with no wrinkling or paper deformity

4 more checks with pass and fail actions, 3 corrective actions, and part numbers are in ServiceForge. Connect ServiceForge to your AI

Device fault hang

Printer displays device fault code and hangs during operation

Ranked causes

1. Fault 5,001.41 - mechanical or power control board (common)
2. Fault 7,002.44 - mechanical or power control board (common)
3. Fault 7,004.46 - mechanical/I/O Right/power board (common)
4. Fault 8,001.44 - mechanical/I/O Right/power board (common)
5. Faults 9,005-9,008 (840) or 9,005/9,069/9,037/9,101 (850) (occasional)

5 corrective actions and part numbers are in ServiceForge. Connect ServiceForge to your AI

Display on/off with LED flash

Display flickers on and off, LED flashing (possible continuous reboot)

Ranked causes

1. Power supply issue (common)
2. Memory DIMM connection problem (common)
3. NVRAM corrupt (occasional)
4. Code DIMM corrupt or connection problem (occasional)
5. Boot ROM corrupt or connection problem (occasional)

5 corrective actions and part numbers are in ServiceForge. Connect ServiceForge to your AI

Green solid fill uneven or wrinkled

Print shows non-uniform fill with wrinkling or paper deformity

Ranked causes

1. Weak jets (common)
2. Uneven drum heating (common)
3. Drum temperature sensor debris or poor contact (occasional)
4. Incorrect transfix pressure (occasional)
5. Drum/transfix assembly defective (rare)

First check

Inspect print for uniform fill and absence of wrinkling

Test point: Green solid fill test print
Expected: Even, uniform fills throughout print with no wrinkling or paper deformity

4 more checks with pass and fail actions, 3 corrective actions, and part numbers are in ServiceForge. Connect ServiceForge to your AI

Low purge volume or low R2 vacuum reading

Purge volume is low or R2 is less than 3000, indicating leak in vacuum system or inadequate peak vacuum

Ranked causes

1. Leak in vacuum system (occasional)
2. Inadequate peak vacuum (occasional)
3. Misaligned C/W/P belt or motion problem (occasional)
4. Damaged C/W/P gasket (occasional)
5. Defective vacuum module (occasional)

First check

Verify purge volume and R2 reading from Cap Vacuum test

Test point: maintenance tray, diagnostics menu
Expected: normal purge volume, R2 between 3000-8000 unspecified, 3000-8000

2 more checks with pass and fail actions, 5 corrective actions, and part numbers are in ServiceForge. Connect ServiceForge to your AI

Poor ink adhesion or poor image durability

Ink does not adhere properly to media, image durability compromised

Ranked causes

1. Incorrect media tray setting for transparencies (common)
2. Paper preheater temperature incorrect (common)
3. Drum temperature too cold (common)
4. Inappropriate transparency film type (occasional)
5. Transfix roller spring pressure incorrect (occasional)

First check

Verify media tray setting for transparency media

Test point: System configuration
Expected: Media tray set to 'Transparency'

4 more checks with pass and fail actions, 5 corrective actions, and part numbers are in ServiceForge. Connect ServiceForge to your AI

Printhead error codes detected on display

Printer displays error code indicating printhead problem at startup or during operation

Ranked causes

1. Error code 13,035.47 in fault history (rare)
2. Open printhead thermostat (rare)
3. Error 13,004.43 or 13,020.41 (HTD calibration drift) (occasional)
4. Error 13,001.40, 13,002.41, 13017.47, or 13018.48 (ribbon cable issue) (occasional)
5. Error 4002.41 or 4006.45 (power control issue) (occasional)

First check

Check error code in fault history for 13,035.47

Test point: fault history display
Expected: Error 13,035.47 not present or present

2 more checks with pass and fail actions, 5 corrective actions, and part numbers are in ServiceForge. Connect ServiceForge to your AI

Tektronix logo, PE LED heartbeat

Tektronix logo displayed, front panel error light off, rear PE LED showing heartbeat pattern

Ranked causes

1. External component or connection (common)
2. NVRAM corrupt (occasional)
3. Internal component failure (occasional)
4. Code DIMM connection problem (occasional)
5. Memory DIMM connection problem (occasional)

5 corrective actions and part numbers are in ServiceForge. Connect ServiceForge to your AI

Tektronix logo, ready light off, PE LED static

Tektronix logo on display, front panel ready light off, rear PE LED static

Ranked causes

1. Code DIMM connection problem (common)
2. Memory DIMM connection problem (common)
3. Failed code ROM DIMM (occasional)
4. Failed memory DIMM (occasional)
5. Failed main board (occasional)

5 corrective actions and part numbers are in ServiceForge. Connect ServiceForge to your AI

Y-Axis Geometry test abnormal vibration caution

Diagnostic test measures amplitude and frequency of vibration peaks in y-axis system. Identifies up to 15 peaks. Abnormal results indicate belt, pulley, drum, or motor issues.

Ranked causes

1. High vibration at 4.9 Hz (>2500 @ 4.9 +/- 0.5) (occasional)
2. High vibration at 6.2 Hz (>2300 @ 6.2 +/- 0.6) (occasional)
3. High vibration at 25.4 Hz (>3700 @ 25.4 +/- 2.5) (occasional)
4. High vibration at 87.6 Hz (>800 @ 87.6 +/- 8.8) (occasional)
5. High vibration at any frequency >15 Hz (>1000) (occasional)

5 corrective actions and part numbers are in ServiceForge. Connect ServiceForge to your AI

Blank display with front panel lights on

Front panel lights are on but display blank; rear LEDs static

Ranked causes

1. Main board not seated correctly (common)
2. Code DIMM not seated correctly (common)
3. Possible bad upgrade (occasional)
4. ESD damage to main board (occasional)

1 corrective action and part numbers are in ServiceForge. Connect ServiceForge to your AI

Blank display with rear LED flashing

Front panel lights on, display blank, rear LED flashing (SDRAM error codes may appear)

Ranked causes

1. Memory DIMM not seated correctly (common)
2. Code DIMM connection problem (common)
3. Unsupported or defective memory DIMM (occasional)
4. ESD damage to main board (occasional)

4 corrective actions and part numbers are in ServiceForge. Connect ServiceForge to your AI

Cap Axis Geometry test abnormal results caution

Diagnostic test measures alignment of Cap/Wipe/Purge assembly via belt hysteresis, motor current, and cap tilt. Results outside range indicate misalignment or tension issues.

Ranked causes

1. Right belt hysteresis abnormal (result 0: >75 or <20) (occasional)
2. Process Motor no load current high (result 1: >61) (occasional)
3. Left belt hysteresis abnormal (result 2: >120 or <50) (occasional)
4. Cap tilt abnormal (result 3: >160 or <40) (occasional)

4 corrective actions and part numbers are in ServiceForge. Connect ServiceForge to your AI

Cap Vacuum test abnormal results caution

Diagnostic test measures vacuum decay time via head tilt mechanism. Results outside range indicate vacuum system or mechanical issues.

Ranked causes

1. No vacuum pull current abnormal (result 0: >200 or <20) (occasional)
2. Slack take-up position abnormal (result 1: >1600 or <40) (occasional)
3. Vacuum bleed off time too high (result 2: >8000) (occasional)
4. Vacuum bleed off time too low (result 2: <3000) (occasional)

4 corrective actions and part numbers are in ServiceForge. Connect ServiceForge to your AI

Cap/Wipe/Purge assembly cannot find home caution

Cap-home sensor does not see sensor flag when expected; assembly fails to home

Ranked causes

1. Cap-home sensor faulty (occasional)
2. Paper-feed motor not operating (occasional)
3. Cap/wipe/purge clutch failing (occasional)
4. Assembly jammed or obstructed (occasional)

First check

Check alignment of C/W/P assembly belts

Test point: C/W/P assembly belts
Expected: Belts properly aligned

3 more checks with pass and fail actions, 4 corrective actions, and part numbers are in ServiceForge. Connect ServiceForge to your AI

Diagnostic test termination abnormality caution

Diagnostic test completes with termination status indicating fault, abort, failure, or interruption. Test results displayed with status code 2-6.

Ranked causes

1. Test interrupted by front panel button press (occasional)
2. Test encountered abort condition (occasional)
3. Test did not produce expected results (occasional)
4. Print engine declared fault during test (rare)

First check

Observe test termination status code

Test point: Front panel display or CentreWare IS diagnostic history
Expected: Status value 0-6 indicating termination condition

4 corrective actions and part numbers are in ServiceForge. Connect ServiceForge to your AI

Failure during power-up

Printer fails or displays error messages during initial startup before Xerox logo appears

Ranked causes

1. RAM DIMM not supported or not installed (common)
2. POST error or BIST error during startup (common)
3. I/O Right not detected (POST Error 4) (occasional)
4. Front panel not detected (POST Error 5) (occasional)

First check

Check for failure message on front panel

Test point: Front panel display
Expected: No message or check message type

2 more checks with pass and fail actions, 4 corrective actions, and part numbers are in ServiceForge. Connect ServiceForge to your AI

Front panel frozen

Front panel display or controls not responding to input

Ranked causes

1. Front panel needs reset (common)
2. Code DIMM connection problem (occasional)
3. Memory DIMM connection problem (occasional)
4. Main board connection problem (occasional)

4 corrective actions and part numbers are in ServiceForge. Connect ServiceForge to your AI

Image never prints from Windows application caution

Printer front panel displays 'Receiving data' message as if data is incoming, but nothing prints to paper or printer returns to Ready mode without producing output.

Ranked causes

1. Transmission retry timeout setting too low (common)
2. Print-to-file option enabled in print dialog (common)
3. PC printer driver or settings misconfiguration (occasional)
4. Network connectivity problem between PC and network printer (occasional)

First check

Verify TRANSMISSION RETRY setting in printer driver

Test point: Printer driver setup options TRANSMISSION RETRY field
Expected: Value set to 850

3 more checks with pass and fail actions, 4 corrective actions, and part numbers are in ServiceForge. Connect ServiceForge to your AI

Printhead error code detected

Printer displays error code indicating printhead problem

Ranked causes

1. Printhead thermostat open (occasional)
2. Power supply failure (occasional)
3. Printhead ribbon cable connection issue (occasional)
4. Power control board failure (occasional)

First check

Note the error code displayed

Test point: printer display or fault history
Expected: specific error code number

2 more checks with pass and fail actions, 4 corrective actions, and part numbers are in ServiceForge. Connect ServiceForge to your AI

Printhead unable to tilt

Printhead is unable to move on its tilt axis; process motor stalled after attempting multiple revolutions to disengage head tilt mechanism and X-axis displacement

Ranked causes

1. Tilt arm motion obstructed by foreign object (common)
2. Tilt arm parked on locking pin (occasional)
3. X-axis motor failure or resistance out of spec (occasional)
4. Damaged gears or belt tension incorrect (occasional)

First check

Visually inspect tilt arm motion path for obstructions

Test point: Tilt arm area
Expected: No obstruction present

3 more checks with pass and fail actions, 6 corrective actions, and part numbers are in ServiceForge. Connect ServiceForge to your AI

Uneven or nonuniform solid fills in color output

YMCKRGB solid fill prints show wrinkles, deformity, or uneven color density throughout the print

Ranked causes

1. Weak jets or uneven drum heating (common)
2. Debris buildup on drum temperature sensor or improper sensor contact (common)
3. Incorrect transfix pressure (occasional)
4. Drum maintenance drawer not properly seated or dirty (common)

First check

Print YMCKRGB solid fill test in duplex at Standard resolution

Test point: Paper output
Expected: Even, uniform fills throughout all seven color prints

3 more checks with pass and fail actions, 5 corrective actions, and part numbers are in ServiceForge. Connect ServiceForge to your AI

Uneven solid fill in YMCKRGB prints caution

Solid fill prints show wrinkles, deformity, or non-uniform color fills throughout the print, visible in duplex mode at Standard or Enhanced resolutions

Ranked causes

1. Weak jets (common)
2. Uneven drum heating (common)
3. Incorrect transfix pressure (occasional)
4. Worn drum/transfix assembly (rare)

First check

Print YMCKRGB test prints in duplex mode at Standard resolution and inspect for wrinkles and uniformity

Test point: YMCKRGB solid fill prints
Expected: Even, uniform fills throughout each print, no wrinkles or deformity

3 more checks with pass and fail actions, 2 corrective actions, and part numbers are in ServiceForge. Connect ServiceForge to your AI

Voltages test abnormal readings caution

Diagnostic test measures key power supply voltages. Abnormal readings indicate power supply failure or connection issues.

Ranked causes

1. 40V ADC reading abnormal (>30739 or <27039) (occasional)
2. Vcc voltage ADC reading abnormal (>32235 or <30662) (occasional)
3. 3.3V ADC reading abnormal (>33838 or <30615) (occasional)
4. Ground sense ADC reading abnormal (>405 or <201) (occasional)

4 corrective actions and part numbers are in ServiceForge. Connect ServiceForge to your AI

Weak or missing jets

Service Test 2 shows weak or missing ink jets affecting print quality

Ranked causes

1. Contaminated maintenance drawer wiper blade (common)
2. Debris in paper path scraping ink from drum (occasional)
3. Weak jet not recovered by maintenance cycle (common)
4. Cap/Wipe/Purge system issue (common)

First check

Clean the maintenance drawer wiper blade

Test point: maintenance drawer
Expected: clean wiper blade with no contamination

2 more checks with pass and fail actions, 4 corrective actions, and part numbers are in ServiceForge. Connect ServiceForge to your AI

Y-Axis Belt Slip test abnormal results caution

Diagnostic test prints banded image and measures effect on y-axis motion during transfix. Results indicate media weight, belt tension, or image quality issues.

Ranked causes

1. Slip index too high (>4.0) (occasional)
2. Slip index too low (<1.8) (occasional)
3. Peak Y-axis following error high (>72) (occasional)
4. Peak Y-axis following error low (<40) (occasional)

4 corrective actions and part numbers are in ServiceForge. Connect ServiceForge to your AI

Black ink-melt heater jam caution

Black ink-melt heater on but ink not dripping; ink stick jam suspected

Ranked causes

1. Ink stick jam in black chute (common)
2. Ink loader failure (occasional)
3. Power supply failure (rare)

3 corrective actions and part numbers are in ServiceForge. Connect ServiceForge to your AI

Calibration: X-axis scale adjustment

Thin parallel pin stripes running length of page, evenly spaced across width, visible on test print; requires menu-based scale adjustment

Ranked causes

1. Printhead X-axis motion gain or rate-of-travel incorrect (common)
2. NVRAM chip (Phaser 840) or BootROM/Printer ID chip (Phaser 850/860) replaced (occasional)
3. X-axis component replaced (occasional)

First check

Allow printer to reach idle Ready to Print state

Test point: Printer status display
Expected: Printer displays Ready to Print status

5 more checks with pass and fail actions, 3 corrective actions, and part numbers are in ServiceForge. Connect ServiceForge to your AI

Communication problem with network or host

Printer cannot communicate with network or connected computer

Ranked causes

1. Ethernet hardware port issue or network configuration problem (occasional)
2. Parallel port hardware issue or cable problem (occasional)
3. Main board port failure after hardware verification (rare)

First check

Test Ethernet port if connected by Ethernet

Test point: Ethernet port and network connection
Expected: Web browser accesses CentreWare IS page with printer IP address

1 more check with pass and fail actions, 3 corrective actions, and part numbers are in ServiceForge. Connect ServiceForge to your AI

Cyan ink-melt heater jam caution

Cyan ink-melt heater on but ink not dripping; ink stick jam suspected

Ranked causes

1. Ink stick jam in cyan chute (common)
2. Ink loader failure (occasional)
3. Power supply failure (rare)

3 corrective actions and part numbers are in ServiceForge. Connect ServiceForge to your AI

DM Axis Performance test abnormal results caution

Diagnostic test measures drum maintenance system controllability, sensor distances, clutch timing, wipe/oil cycles, and drag. Results outside normal ranges indicate mechanical issues.

Ranked causes

1. Controllability flag failure (result 0) (rare)
2. High wipe/oil drag values (results > 19) (occasional)
3. Low maintenance drawer lift results (< 9) (occasional)

First check

Run DM Axis Performance test (Test ID# 6)

Test point: Controllability flag result
Expected: Result not 0

3 corrective actions and part numbers are in ServiceForge. Connect ServiceForge to your AI

Drum maintenance home flag detection failure caution

Maintenance blade position sensor failed to detect drum-maintenance home flag transitions

Ranked causes

1. Compound gear not rotating (common)
2. Drum maintenance cam or bushings damaged (occasional)
3. Faulty I/O board or clutch (occasional)

First check

Observe drum-maintenance home flag motion while turning on printer

Test point: Drum-maintenance home flag
Expected: Flag rotates during power-on sequence

2 more checks with pass and fail actions, 3 corrective actions, and part numbers are in ServiceForge. Connect ServiceForge to your AI

False media jam message

Printer displays media jam error without actual jam present

Ranked causes

1. Lower Tray paper pick flag stuck (common)
2. Lower Tray Assembly fuse blown (occasional)
3. Damaged Lower Tray connector (occasional)

3 corrective actions and part numbers are in ServiceForge. Connect ServiceForge to your AI

Magenta ink-melt heater jam caution

Magenta ink-melt heater on but ink not dripping; ink stick jam suspected

Ranked causes

1. Ink stick jam in magenta chute (common)
2. Ink loader failure (occasional)
3. Power supply failure (rare)

3 corrective actions and part numbers are in ServiceForge. Connect ServiceForge to your AI

Media jam in Lower Feeder 2

Paper does not feed from lower feeder 2, sensor events or timeouts detected

Ranked causes

1. Tray pulled out during printing (common)
2. Static charge on rear tray sensor (occasional)
3. Lower feeder failure (occasional)

First check

Verify tray position

Test point: Lower Feeder 2 tray
Expected: Tray fully inserted

3 corrective actions and part numbers are in ServiceForge. Connect ServiceForge to your AI

No lights or sound during power on

Printer shows no lights or sound when powered on, no fan movement

Ranked causes

1. Short in power system (common)
2. No wall power (common)
3. Power supply failed (common)

4 corrective actions and part numbers are in ServiceForge. Connect ServiceForge to your AI

Oil streaks on print edge

Oil stains appear on the edge of the print

Ranked causes

1. Drum maintenance cam roller or electric clutch not operating correctly (common)
2. Wiper blade in drum maintenance drawer damaged (common)
3. Drum maintenance actuators not operating correctly (occasional)

First check

Test drum maintenance cam roller and electric clutch operation

Test point: Drum maintenance system
Expected: Components operating correctly

2 more checks with pass and fail actions, 3 corrective actions, and part numbers are in ServiceForge. Connect ServiceForge to your AI

Oil streaks on top of print

Oil marks appear on top surface of printed output

Ranked causes

1. Stripper fingers or rapid release guide soiled (common)
2. Maintenance drawer blade soiled or damaged (common)
3. Ink residue on drum (common)

First check

Clean stripper fingers and rapid release guide

Test point: Print path components
Expected: Components clean and free of oil residue

2 more checks with pass and fail actions, 3 corrective actions, and part numbers are in ServiceForge. Connect ServiceForge to your AI

Paper path status diagnostic abnormal

Paper Path Status test (Test ID #3) identifies sensor state abnormalities that would prevent page printing

Ranked causes

1. Media present in paper path (common)
2. Door or cover open (common)
3. Missing or improperly installed tray (occasional)

First check

Verify duplex media sensor detects paper

Test point: Duplex sensor
Expected: 1 = No media at duplex sensor

2 more checks with pass and fail actions, 3 corrective actions, and part numbers are in ServiceForge. Connect ServiceForge to your AI

Power supply does not output DC voltages high voltage

Fuses functional but no DC voltages measured from power supply output

Ranked causes

1. Shorted motor or solenoid driver (common)
2. Power control board has shorted driver (occasional)
3. Defective motor or solenoid (occasional)

First check

Disconnect +40 DC loopback connector and attach service load (Phaser 840/850 only)

Test point: J250 connector
Expected: Rear panel LEDs illuminate

2 more checks with pass and fail actions, 3 corrective actions, and part numbers are in ServiceForge. Connect ServiceForge to your AI

Printer does not initialize

Printer does not begin initializing when powered on; Power light may not be on

Ranked causes

1. AC input voltage out of specification (common)
2. Power supply fuse F1 open (common)
3. Power supply defective (occasional)

First check

Measure AC input voltage

Test point: Power supply input
Expected: 87 to 128 VAC (115 VAC nominal) or 174 to 250 VAC (220 VAC nominal), 87–128 VAC or 174–250 VAC
Tools: DMM

2 more checks with pass and fail actions, 3 corrective actions, and part numbers are in ServiceForge. Connect ServiceForge to your AI

Printer intermittently hangs or stops responding

Printer becomes unresponsive at random intervals during operation

Ranked causes

1. Normal operation taking extended time (common)
2. Corrupt data from network or host causing crash (occasional)
3. Main board component failure or static damage (occasional)

First check

Determine if front panel responds during apparent hang

Test point: Front panel buttons and cover sensors
Expected: Panel responds to input

2 more checks with pass and fail actions, 3 corrective actions, and part numbers are in ServiceForge. Connect ServiceForge to your AI

Printer shuts down or reboots unexpectedly

Printer spontaneously powers off or restarts without user action

Ranked causes

1. Power source problem or overcurrent condition (common)
2. Power supply failure with slow restart (occasional)
3. Fault condition triggering automatic reboot (common)

First check

Observe power-on behavior after shutdown

Test point: Power switch and rear panel LEDs
Expected: Power-up begins within 2 seconds or after 6 seconds

3 corrective actions and part numbers are in ServiceForge. Connect ServiceForge to your AI

Yellow ink-melt heater jam caution

Yellow ink-melt heater on but ink not dripping; ink stick jam suspected

Ranked causes

1. Ink stick jam in yellow chute (common)
2. Ink loader failure (occasional)
3. Power supply failure (rare)

3 corrective actions and part numbers are in ServiceForge. Connect ServiceForge to your AI

Black stripe on every print

2-inch wide black stripe from top to bottom on every print, all 4 colors

Ranked causes

1. Damaged printhead data cable (common)
2. Failed main board (occasional)

2 corrective actions and part numbers are in ServiceForge. Connect ServiceForge to your AI

Calibration: Transfix roller pressure spring adjustment patient safety

Print wrinkles on left or right side in duplex mode due to unbalanced transfix roller pressure; requires synchronized set screw adjustment

Ranked causes

1. Transfix roller pressure unbalanced between left and right sides (common)
2. Wrinkling on both left and right sides indicates drum/transfix assembly failure (occasional)

First check

Print YMCKRGB test in duplex mode

Test point: Printed test page output
Expected: YMCKRGB test printed without wrinkles on both sides

8 more checks with pass and fail actions, 2 corrective actions, and part numbers are in ServiceForge. Connect ServiceForge to your AI

Compound gear sensor not detecting transitions caution

Compound gear sensor reports no transitions when gear should be turning

Ranked causes

1. Sensor physically broken (occasional)
2. Sensor not plugged in (common)

First check

Run diagnostics to verify compound gear sensor operation

Test point: Compound gear sensor
Expected: Sensor detects transitions when gear turns

2 corrective actions and part numbers are in ServiceForge. Connect ServiceForge to your AI

High R2 vacuum reading

R2 reading greater than 8000 from Cap Vacuum test, indicating problem with air solenoid or clogged tubing

Ranked causes

1. Defective air solenoid (occasional)
2. Clogged vacuum tubing (occasional)

First check

Verify R2 reading from Cap Vacuum test

Test point: diagnostics menu
Expected: R2 between 3000-8000 unspecified, 3000-8000

2 corrective actions and part numbers are in ServiceForge. Connect ServiceForge to your AI

Intermittent power loss with spurious over-current caution

Printer shuts down then powers up again after 2–6 seconds; fans twitch briefly and LEDs flash.

Ranked causes

1. Spurious over-current detection (occasional)
2. Power supply auto-ranged to 220 VAC (occasional)

First check

Measure power-up time from power switch to stable operation

Test point: Front panel LEDs
Expected: Within 2 seconds for normal operation

2 corrective actions and part numbers are in ServiceForge. Connect ServiceForge to your AI

Lower tray assembly connection failure caution

Problem detected with lower tray assembly or its installation; connection faulty

Ranked causes

1. Damaged LTA connector (occasional)
2. Damaged printer-side connection (occasional)

2 corrective actions and part numbers are in ServiceForge. Connect ServiceForge to your AI

Media jam - timeout on pick flag Lower Feeder 2

Media does not move from lower feeder 2 within expected time

Ranked causes

1. Leading-edge jam with right corner folded (common)
2. Media bias block clamping media in tray (common)

First check

Verify media loading

Test point: Lower Feeder 2 tray
Expected: Tray properly loaded with adequate media

7 corrective actions and part numbers are in ServiceForge. Connect ServiceForge to your AI

More symptoms

No response to power switch
Printhead-to-drum gap incorrect
Process motor stall during operation
Process Motor test abnormal results
Repeating print defects on print
Transfix Load test abnormal results
Wrinkled paper in duplex solid fill prints
X-axis motor not moving
Y-Axis Encoder test abnormal results
Abnormal purge vacuum readings
Bad message ID in DMC event request
Black ink-level sensor malfunction
C/W/P belt misalignment
C/W/P wiper gasket separation or pitting
Calibration: Cap/wipe/purge assembly belt alignment (timing)
Calibration: Drum position encoder gap setting
Calibration: Drum position encoder gap setting (alternate model)
Calibration: Printhead-to-drum gap
Calibration: Printhead-to-drum gap adjustment
Calibration: Transfix roller pressure spring adjustment after continued wrinkling
Cap Axis Drive test abnormal results
Cap task unexpected message during homing
Cap/wipe/purge sensor actuated too soon
Color mixing between rows
Cyan ink-level sensor malfunction
Diagnostic test initialization failure
DMC event parameter block not found in linked list
DMC event parameter block not prepped
DMC motion segment programmed too late
DMC motion segment too short
DMC timer event missed
DMC timer parameter block not found
Drum heater not heating or heating slowly
Drum heater running away
Drum maintenance home sensor actuated too soon
Drum maintenance home sensor state error
Drum maintenance unexpected motion detected
Drum thermistor open circuit
Drum thermistor short circuit
Drum thermistor temperature fault
Electronics fan twitches or rear LEDs blink then stop
Energy Star mode door open error
Ethernet port communication verification
Heater fuse F2 or F3 open
Ink smears on first side of duplex print
Ink well sense cable unplugged
Invalid device state argument to DMC
LEDs blink then hang in unknown state
Magenta ink-level sensor malfunction
Media jam - pick flag stuck in Lower Feeder 2
No lights or sound on power-up (Phaser 850 specific)
Non-Xerox ink failure suspected
Paper path drive current excessive
Parallel port communication verification
Power remains on after power switch off
Power supply failure
Preheater heater not heating or heating slowly
Preheater heater running away
Preheater thermistor ADC converter fault
Preheater thermistor open circuit
Preheater thermistor short circuit
Preheater thermistor temperature fault
Printer does not power up
Printer does not print built-in page
Printer shuts down unexpectedly
Printhead left jet stack heater not heating or heating slowly
Printhead left jet stack heater running away
Printhead left jet stack thermistor open circuit
Printhead left jet stack thermistor short circuit
Printhead reservoir ADC converter fault
Printhead reservoir heater not heating or heating slowly
Printhead reservoir heater running away
Printhead reservoir thermistor open circuit
Printhead reservoir thermistor short circuit
Printhead right jet stack heater not heating or heating slowly
Printhead right jet stack heater running away
Printhead right jet stack thermistor open circuit
Printhead right jet stack thermistor short circuit
Process motor DMC status message mismatch
Process motor task negative delay error
Process motor task unexpected message error
Short circuit in power supply system
Squiggly vertical lines on print
Stagnant ink discoloration in solid color areas
Streaking visible in solid fill prints
Unexpected CAP command in idle state
Unexpected XA message received
Use error handler for print failures
Vacuum pump and solenoid valve function check
Wax streaks or smudges on printhead faceplate
Yellow ink-level sensor malfunction

91 more symptoms with ranked causes and checks are in ServiceForge. Connect ServiceForge to your AI

Error codes

Code	Meaning	Trigger	Severity
`04,001.40`	PC device fault: failure reading printhead NVRAM data	Printhead NVRAM data cannot be read at boot or during operation	error
`04,002.41`	PC device fault: printhead NVRAM data all zeros	Printhead NVRAM contains all 0x00 values at read	error
`07,001.43`	Lower tray assembly problem; connection failure or installation error	Detected during initialization or operation	error
`07,001.65`	Bad I/O right circuit board detected	Lower tray assembly fault reported	error
`07,002.44`	Process motor stall detected	Process motor fails to complete motion during transfix, drum maintenance, or head tilt	error
`07,003.45`	Compound gear sensor failed to detect transitions	No sensor transitions observed when compound gear should rotate	error
`07,004.46`	Drum maintenance cam home sensor state error; sensor did not actuate as expected	Drum maintenance home sensor behavior incorrect during initialization or operation	error
`07,005.47`	Drum maintenance sensor position error; actuated at unexpected time	Home sensor triggered earlier than expected	error
`07,006.48`	Drum maintenance unexpected motion; sensor actuated when no motion expected	Home sensor actuates during idle or no-motion condition	error
`08,001.44`	Cap/Wipe/Purge assembly cannot find home position; sensor did not see flag	Cap-home sensor fails to detect expected flag position during homing	error
`08,003.46`	Cap-home sensor actuated too soon; assembly obstructed during motion	Home sensor triggers earlier than expected during homing motion	warning
`08,009.65`	Unexpected message during cap/wipe/purge assembly homing; Y-Axis encoder failure	Unexpected ITC message received during CAP assembly initialization or homing	error
`09,009.44`	Ink well sense cable unplugged from printhead	Printhead ink well sense cable detected as disconnected	warning
`10`	EEPROM test failure	First 24 bytes read from EEPROM fails to verify Tektronix Ethernet address	error
`10.01`	EEPROM read failure	POST Printer ID chip test	error
`10.02`	EEPROM write failure	POST Printer ID chip test	error
`10.03`	EEPROM re-read failure	POST Printer ID chip test	error
`10.04`	EEPROM write/read mismatch	POST Printer ID chip verification	error
`11`	Mariner ASIC version verification failure	Mariner ASIC on main board fails version level verification	error
`11,001.60`	DMC timer event missed; health check detected timer event in past	Health check routine detects timer event scheduled for time in past	error
`11,007.66`	DMC event parameter block not prepped before notification request	DMC library receives unprepared parameter block in event request	error
`11,008.67`	Bad message ID in DMC event request; inconsistent state field	DMC event notification request contains invalid state field	error
`11.01`	Ethernet port chip failure	POST Ethernet test	error
`11,011.61`	DMC event parameter block not found in linked list	DMC library unable to locate event parameter block	error
`11.02`	Ethernet port ID error	POST Ethernet chip identification	error
`11,020.61`	DMC timer parameter block not found in linked list	DMC library unable to locate timer parameter block	error
`11,022.63`	Invalid device state argument to dmc_get_device_stat()	DMC function receives invalid ITC message base parameter	error
`11,025.66`	DMC motion segment programmed too late; interrupt service routine missed	DMC ASIC interrupt to program event control hardware occurs too late for next segment	error
`11,029.61`	DMC motion segment too short; less than 750 microseconds	Software attempts to program motion profile with insufficient segment duration	error
`11033.65`	Motion Control Event Missed	Health check routine detects pending hardware motion profile event is in the past	error
`11034.66`	Motion Control Done Timer Too Late	Cannot program motion control profile done event in time	error
`11038.61`	A/D Input Out of Range	MEDUSA ASIC analog to digital calibration detects input out of tolerance	error
`11039.62`	Printhead NVRAM Read Failure	NVRAM read attempt via I2C interface fails	error
`12`	Medusa ASIC version verification failure	Medusa ASIC on main board fails version level verification	error
`12002.62`	ITC Send Message Failure (secondary failure)	Message queue full; unable to place message in destination queue	error
`12.xx`	CPU Interrupt test failure or unexpected interrupt request	POST CPU interrupt test	critical
`13`	Super Glue ASIC version verification failure	Super Glue ASIC on main board fails version level verification	error
`13,001.40`	Printhead ribbon cable communication error	Cable connection issue or cable failure	error
`13001.40`	Left Jet Stack Thermistor Open	Thermistor in left jet stack detected as open circuit	error
`13,002.41`	Printhead ribbon cable communication error	Cable connection issue or cable failure	error
`13002.41`	Left Jet Stack Thermistor Short	Thermistor in left jet stack detected as shorted	error
`13003.42`	Left Jet Stack Heater Running Away	Left jet stack heater temperature uncontrolled and rising	critical
`13004.43`	Left Jet Stack Heater Slow	Left jet stack heater not heating or heating too slowly	warning
`13.01`	USB test failure	POST USB test	critical
`13011.66`	Bad TCH Message in Fault State	Unexpected message received by reservoir thermal manager while in device fault state	error
`13,017.47`	Printhead ribbon cable communication error	Cable connection issue or cable failure	error
`13017.47`	Right Jet Stack Thermistor Open	Thermistor in right jet stack detected as open circuit	error
`13,018.48`	Printhead ribbon cable communication error	Cable connection issue or cable failure	error
`13018.48`	Right Jet Stack Thermistor Short	Thermistor in right jet stack detected as shorted	error
`13019.40`	Right Jet Stack Heater Running Away	Right jet stack heater temperature uncontrolled and rising	critical
`13020.41`	Right Jet Stack Heater Slow	Right jet stack heater not heating or heating slowly	warning
`13033.45`	Reservoir Thermistor Open	Thermistor in ink reservoir detected as open circuit	error
`13034.46`	Reservoir Thermistor Short	Thermistor in ink reservoir detected as shorted	error
`13,035.47`	Printhead thermostat failure detected	Thermostat open or abnormal reading	error
`13035.47`	Reservoir Heater Running Away	Reservoir heater temperature uncontrolled and rising	critical
`13036.48`	Reservoir Heater Slow	Reservoir heater not heating or heating slowly	warning
`13037.61`	Reservoir ADC Is Bad	Analog to digital converter for reservoir thermistor appears faulty	error
`14`	CL1284 parallel port controller chip test failure	CL1284 IC on main board fails version level verification	error
`14.xx`	Real Time Clock test failures	POST RTC test (soft error)	warning
`15000.40`	Drum Temperature Incorrect	Drum temperature sensed by thermistor is out of specification	warning
`15001.42`	Drum Thermistor Open	Drum thermistor detected as open circuit	error
`15002.43`	Drum Thermistor Short	Drum thermistor detected as shorted	error
`15003.44`	Drum Heater Running Away	Drum heater temperature uncontrolled and rising	critical
`15004.45`	Drum Heater Slow	Drum heater not heating at normal rate	warning
`15.01`	RAM SODIMM in slot 1 failed	POST RAM slot 1 test (soft error)	warning
`15.02`	RAM SODIMM in slot 2 failed	POST RAM slot 2 test (soft error)	warning
`15.03`	RAM SODIMM in slot 1 incompatible	POST RAM slot 1 compatibility test (soft error)	warning
`15.04`	RAM SODIMM in slot 2 incompatible	POST RAM slot 2 compatibility test (soft error)	warning
`16000.40`	Preheater Temperature Incorrect	Preheater temperature sensed by thermistor is out of specification	warning
`16001.43`	Preheater Thermistor Open	Preheater thermistor detected as open circuit	error
`16002.44`	Preheater Thermistor Short	Preheater thermistor detected as shorted	error
`16003.45`	Preheater Heater Running Away	Preheater heater temperature uncontrolled and rising	critical
`16004.46`	Preheater Heater Slow	Preheater not heating or heating slowly	warning
`16005.47`	Preheater Thermistor ADC Bad	Invalid reading reported by preheater thermistor ADC converter	error
`16.01`	Less than 64 MB of RAM detected	POST RAM capacity test (soft error)	warning
`17`	Ethernet chip existence test failure	Ethernet chip on main board not detected or does not respond	error
`17.xx`	Unrecognized option card responding	POST option card detection (should never occur)	error
`18.xx`	Optional Token Ring card failures	POST option card test (should never occur)	error
`19001.4X`	Printhead Calibration Dev Fault 0x01	Incorrect reading during scales and offset calibration	error
`19002.4X`	Printhead Calibration Dev Fault 0x02	Incorrect reading during printhead data tap determination	error
`19008.63`	Incorrect Printhead Installed	Printhead type does not match software compilation	error
`2`	SDRAM SIMM presence test failed	Power-on self-test detects missing SDRAM modules	error
`20.01`	I/O Left not detected	POST I/O Left detection	error
`2,001.40`	System fault: engine cannot detect presence of right I/O board	Right I/O board not detected at power-up or during operation	error
`20.02`	I/O Left partially responding	POST I/O Left communication test	error
`2,002.40`	System fault: engine cannot detect presence of left I/O board	Left I/O board not detected at power-up or during operation	error
`2,002.61`	System program fault: queue initialization failure during engine firmware boot	sy_creat_queues() function call fails during sy_app_init() execution	error
`2,003.62`	System program fault: unable to start service diagnostic tasks during boot	sy_app_init() fails to start service diagnostics task while booting into diagnostic mode	error
`2.01`	Failure to read chip IDs	POST chip ID test at power-up	critical
`2.02`	Failure testing timer values	POST timer test at power-up	critical
`21.01`	Printhead not responding	POST printhead communication test	critical
`21.02`	Printhead NVRAM not responding	POST printhead NVRAM test	critical
`21.03`	Printhead ink level sensed below range	POST ink level sensor test (soft error)	warning
`21.04`	One color sensed out of range for printhead ink level	POST ink level color range test (soft error)	warning
`21.05`	Printhead reservoir thermistor above range	POST printhead temperature sensor test	error
`21.06`	Left printhead jetstack thermistor out of range	POST left jetstack temperature test	error
`21.07`	Right printhead jetstack thermistor out of range	POST right jetstack temperature test	error
`21.08`	Printhead reservoir thermistor out of range	POST printhead reservoir temperature test	error
`22.01`	Maintenance Kit counter not responding	POST maintenance kit counter test (soft error)	warning
`22.02`	Intermittent response from maintenance kit counter	POST maintenance kit counter test (soft error)	warning
`22024.01`	Printhead Not Parked When Powered Off	Printhead was not in parked position at power down	warning
`22,101.06`	Unexpected lower tray present sensor event in Lower Feeder 2 with media in Lower Feeder 2	Tray present sensor detects unexpected event while media is present in feeder	warning
`22,102.07`	Sticky pick flag in Lower Feeder 2 with media picked from Lower Feeder 2	Media does not advance due to restricted pick flag motion	warning
`22,102.18`	Time-out on pick flag of Lower Feeder 2 with media picked from Lower Feeder 2	Pick flag does not complete motion within timeout period	warning
`22,104.11`	Time-out on pick flag of Lower Feeder 1 with media picked from Lower Feeder 2	Pick flag motion timeout when picking from Lower Feeder 2	warning
`22,105.01`	Unexpected standard tray sensor event with media in Lower Feeder 2	Standard tray sensor detects unexpected event while media in lower feeder	warning
`22,200.06`	Command stop event with media in lower feeder 1	System stop command issued while media present in feeder 1	error
`22,306.15`	Time-out of pick flag on main tray with media picked from the main tray	Pick flag does not respond within expected time	error
`22,322.13`	Unknown standard tray event	Unexpected standard tray event	warning
`22,411.01`	Handfeed width A or A4 sensor event	Media not detected at handfeed sensor or wrong size	warning
`22,500.00`	Command stop event with media in front door area	Media detected in front door area during command stop	error
`22,501.01`	Unexpected Lower-tray-present sensor event in Lower Feeder 2 with media in front door area	Lower tray sensor triggered unexpectedly	warning
`22,503.03`	Unexpected Lower-tray-present sensor event in Lower Feeder 1 with media in front door area	Lower tray sensor triggered unexpectedly	warning
`22,505.05`	Unexpected standard-tray-sensor event with media in front door area	Standard tray sensor triggered unexpectedly	warning
`22,506.06`	Unexpected standard tray pick flag event	Pick flag triggered unexpectedly	error
`22,508.08`	Unexpected preheat entry sensor (left side) event	Preheat entry sensor triggered unexpectedly	warning
`22,508.10`	Time-out on preheat entry sensor (left side)	Preheat entry sensor does not trigger within expected time	error
`22,511.02`	Unexpected A/A4 sensor event	A/A4 width sensor triggered unexpectedly	warning
`22,512.14`	Time-out on preheat exit sensor	Preheat exit sensor does not trigger within expected time	error
`22,514.05`	Unexpected Exit Sensor event	Exit sensor triggered unexpectedly	warning
`22,522.04`	Media not exiting completely	Media remains in exit area beyond expected time	error
`22,538.13`	Time-out on preheat exit sensor (duplex) with media in front door area	Preheat exit sensor does not trigger within expected time in duplex mode	error
`22,541.05`	Unexpected A/A4 sensor event	A/A4 width sensor triggered unexpectedly	warning
`22,542.17`	Time-out on preheat exit sensor (duplex). Unexpected duplex sensor event	Preheat exit sensor or duplex sensor timeout in duplex mode	error
`22,548.03`	Duplex long declaration determined from duplex sensor	Duplex sensor detects media longer than expected	warning
`22,600.01`	Command stop event with media in exit cover area	Media detected in exit cover area during command stop	error
`22,601.02`	Unexpected Lower-tray-present-sensor event in Lower Feeder 2 with media in exit door area	Lower tray sensor triggered unexpectedly	warning
`22,603.04`	Unexpected Lower-tray-present-sensor event in Lower Feeder 1 with media in exit door area	Lower tray sensor triggered unexpectedly	warning
`22,605.05`	Unexpected standard-tray-sensor event with media in exit door area	Standard tray sensor triggered unexpectedly	warning
`22,613.05`	Unexpected stripper exit sensor event	Stripper exit sensor triggered unexpectedly	warning
`22,613.16`	Unexpected stripper exit sensor event	Stripper exit sensor triggered unexpectedly	warning
`22,614.06`	Unexpected duplex-sensor event	Duplex sensor triggered unexpectedly	warning
`22,638.14`	Time-out on preheat-entry sensor (duplex) with media in exit cover	Preheat entry sensor does not trigger within expected time in duplex mode	error
`22,644.11`	Time-out on duplex sensor	Duplex sensor does not trigger within expected time	error
`22,700.02`	Command-stop event while transfixing (positioning error at start of drum maintenance or imaging)	Command stop during transfix operation due to positioning error	critical
`22703.05`	Y-axis stall during transfix operation	Motor stall during transfix, typically caused by belt slippage	error
`22705.07`	Y-axis time-out during transfix media movement to exit sensor	Media did not reach exit sensor within timeout period	error
`22706.08`	Y-axis declared page too short using A4 sensor or preheat exit sensor	Media length detected as shorter than expected for smaller size media	error
`22707.00`	Y-axis declared media too long, typically from multipick or stuck A4 sensor	Media length exceeds expected maximum	error
`22721.05`	Y-axis print failure, media did not arrive at preheat exit sensor in time	Media did not reach preheat exit sensor before print completion window	error
`22722.06`	Y-axis timeout during transfix moving media to stripper sensor	Media did not reach stripper sensor within timeout period	error
`22900.04`	Unexpected front door event detected	Front door opened during operation or spurious event	warning
`22901.05`	Unexpected exit cover event detected	Exit cover opened during operation or spurious event	warning
`23003.65`	Head Tweak Read Failed from NVRAM	Read of head tweak value failed; two saved values differ	critical
`23089.61`	NVRAM Programming Fault (0x59), same as 23003.65	NVRAM head tweak value invalid	critical
`23133.60`	NVRAM Corruption Detected on power-up	Firmware validation check detects corrupted NVRAM variable	error
`3`	SDRAM bank 0 test failed	Power-on self-test detects failure in DRAM bank 0	error
`31001.4x`	Auxiliary Motor Error	Auxiliary motor fault condition	unknown
`31002.4x`	Process Motor Stall	Process motor stall detected	unknown
`31003.42`	Preheat Exit Sensor Bad diagnostic action	Sensor reading conflict detected	error
`31003.4x`	Preheat Exit Sensor Bad	Sensors around preheater exit indicate media presence/absence contradicting preheat exit sensor reading	error
`31044.60`	Bad Message in mp_sleep_for() function	Media path task received unexpected inter-task communication message during delay period	error
`31049.65`	Program fault during auxiliary tray pick	Media path task received unexpected inter-task communication message during auxiliary tray pick	error
`31058.65`	Bad message during auxiliary tray pick operations	Media path task received unexpected inter-task communication while picking from auxiliary tray	error
`4`	SDRAM bank 1 test failed	Power-on self-test detects failure in DRAM bank 1	error
`4002.41`	Power control board or printhead ribbon cable failure	Power control circuit malfunction or cable fault	error
`4,003.42`	PC device fault: printhead NVRAM data all ones	Printhead NVRAM contains all 0xFF values at read	error
`4,004.43`	PC device fault: printhead NVRAM checksum failure	Checksum verification of printhead NVRAM data fails	error
`4,006.45`	Power control board or printhead ribbon cable failure	Power control circuit malfunction or cable fault	error
`4,006.67`	PC program fault: undefined message received by processor	Processor receives unrecognized or undefined message	error
`4.01`	I/O Right or front panel not detected	POST I/O testing; front panel not initialized	critical
`4,013.43`	PC device fault: printhead unable to move on tilt axis due to collision	Process motor stalls after attempting to disengage head tilt mechanism through multiple revolutions and X-axis displacement	error
`4,014.44`	PC device fault: calibration failure	Calibration process fails	info
`4,015.45`	PC device fault: printhead adjust timeout	Engine remains in printhead adjust state for over 20 minutes	error
`4,016.46`	PC device fault: printhead NVRAM format number not understood	Printhead format number in NVRAM does not match firmware version expectations	error
`4,016.68`	PC program fault: bad message in main ready loop	pc_ready() receives unexpected or out-of-order message while printer waiting for PostScript command	error
`4,017.47`	PC device fault: ambient temperature below minimum	Ambient temperature drops below 10°C	warning
`4,018.48`	PC device fault: printhead temperature dropped during warm-up	Printhead temperature falls below clean threshold after initial warm-up assessment at power-up	warning
`4,019.40`	PC device fault: 193 DPI calibration failure	Target Volt-Sec Area of Fast Color mode cannot be achieved during calibration	error
`4,020.41`	PC device fault: head and cap in contact at boot	Head/cap contact flag set in NVRAM at power-up	error
`4,021.42`	PC device fault: drum surface dirty at boot	Drum dirty flag set in NVRAM at power-up	warning
`4,023.66`	PC program fault: dangerous process motor motion detected	PC task detects unsafe printer position before sending motor command to print, chase, or move eccentric/dm cam	error
`4,029.63`	PC program fault: head calibrate task spawn failed	Attempt to spawn printhead calibration task fails	error
`4,032.66`	PC program fault: undefined result in process result handler	pc_process_result() receives undefined inter-task communication result message	error
`4,035.60`	PC program fault: bad status message in process status handler	pc_process_status() receives unexpected inter-task communication status message	error
`4,040.65`	PC program fault: re-entrant halt sequence detected	Soft shutdown request made while printer already in halt state	error
`4,046.62`	PC program fault: dangerous process motor motion during shutdown	PC detects unsafe print head position during soft shutdown when sending motor command	error
`4,051.67`	PC program fault: bad command result during drum warm-up	PostScript command returns SERVICE_NEEDED during drum warm-up initialization	error
`4,059.66`	PC program fault: bad command result during drop flush processing	PostScript command returns SERVICE_NEEDED during big drop flush operation	error
`4,064.62`	PC program fault: invalid thermal state in non-volatile memory	Thermal state value in NVRAM not recognized by firmware	error
`4,128.63`	PC program fault: bad command result waiting for fault clear	PostScript command returns SERVICE_NEEDED while waiting for fault state to clear	error
`4,243.61`	PC program fault: printhead invalid set point for print mode	Printhead detected with different set points for different print modes; invalid set point for selected mode	error
`5`	SDRAM bank 2 test failed	Power-on self-test detects failure in DRAM bank 2	error
`5,001.41`	Y-axis drum-home sensor failure	Drum completes full revolution without drum-home sensor activation	error
`5,002.42`	Y-axis position failure	Drum position does not match expected position	error
`5,005.67`	Y-axis bad inter-task communication in home state	YA task receives YA_CMD_INIT or unrecognized command while in home state	error
`5.01`	Front panel not detected	POST front panel test at power-up	critical
`5,026.61`	Y-axis missed rendezvous message during image printing	YA task fails to receive rendezvous message to sync drum motion to paper path during transfix	error
`6`	SDRAM bank 3 test failed	Power-on self-test detects failure in DRAM bank 3	error
`6,000.41`	X-axis motor current fault (XA_FAULT_MCURRENT)	X-axis motor control detects coil open/short or motor fuse open	error
`6,001.42`	X-axis motor fault	X-axis motor control detects coil open/short or motor fuse open	error
`6,002.43`	X-axis motor fault	X-axis motor control detects coil open/short or motor fuse open	error
`6,003.44`	Motor coil open or shorted; X-axis motor fuse open	X-axis motor fails to move during diagnostics	error
`6,005.68`	Door opened in Energy Star mode; unexpected firmware fault reported	Door opened while printer in Energy Star mode	warning
`6.01`	Duplex sensor detected but front panel not responding	POST duplex/front panel test	critical
`6,033.66`	XA unexpected ITC message; XA task protocol error	XA task received unexpected message while idle	error
`7,004.46`	Maintenance blade position sensor failed to detect drum-maintenance home flag transitions	Right I/O board sensor unable to detect flag transitions during power-on	error
`7.01`	Front panel detected but I/O Right not responding	POST I/O testing	error
`7,035.63`	Process motor negative delay error; negative delay argument passed to pm_sleep_for()	Software function called with invalid negative delay	error
`7,036.64`	Unexpected message in pm_sleep_for(); ITC communication error	Unexpected message received during pm_sleep_for() processing	error
`7,052.62`	Bad message ID in pm_update_dmc_status(); DMC status message mismatch	Received ITC message does not match expected DMC status message type	error
`8,002.67`	Generic cap task program fault; main CAP state sequencer entered fault state	Unexpected conditions detected during CAP movements such as home or goto	error
`8,022.60`	Unexpected CAP command while idle; invalid CAP command or message received	CAP task in idle state receives invalid command or unknown ITC message	error
`9`	NVRAM test failure (Phaser 840 only)	Walking 1s/0s test fails on last 4 bytes in VxWorks section of NVRAM	error
`9,001.45`	Cyan ink-level sensor malfunction in cyan reservoir	Ink-level sensor in cyan reservoir reports fault	error
`9,002.46`	Magenta ink-level sensor malfunction in magenta reservoir	Ink-level sensor in magenta reservoir reports fault	error
`9,003.47`	Yellow ink-level sensor malfunction in yellow reservoir	Ink-level sensor in yellow reservoir reports fault	error
`9,004.48`	Black ink-level sensor malfunction in black reservoir	Ink-level sensor in black reservoir reports fault	error
`9,005.40`	Cyan ink-melt heater jam; heater on but no ink dripping	Cyan heater energized but no ink output detected	error
`9,006.41`	Magenta ink-melt heater jam; heater on but no ink dripping	Magenta heater energized but no ink output detected	error
`9,007.42`	Yellow ink-melt heater jam; heater on but no ink dripping	Yellow heater energized but no ink output detected	error
`9,008.43`	Black ink-melt heater jam; heater on but no ink dripping	Black heater energized but no ink output detected	error
`PE 1 rapid blink`	CPU Bridge and/or PCI bus communication failure	BIST execution during power-up	critical
`PE 2 rapid blinks`	ROM not responding	BIST execution during power-up	critical
`PE 3 rapid blinks`	System hangs during code initialization	BIST execution during power-up	critical
`PS/PE 1 blink each then off`	Power supply shutdown due to regulation failure	DC power applied; power supply could not remain regulated	critical
`PS/PE on solid`	Printer held in reset mode	System power-up	critical
`RAM ERROR`	RAM socket has no supported SODIMM installed	POST RAM testing at power-up	critical

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0 fixes logged by technicians through their AI, with outcomes, for this model.

ServiceForge knowledge base record. Field-unverified unless technicians confirmed it. A teaching summary of the record, not a service manual. Export 2026-10-14.