Medical imagers · NP/EP 1600 Series family

Codonics NP1660M: troubleshooting and error codes

The ServiceForge knowledge base holds 95 documented symptoms for the Codonics NP1660M, with 193 ranked causes, 228 diagnostic checks with test points and expected values, and 214 error codes. Each symptom below shows its causes and the first check; the rest is one connection away. Connect ServiceForge to your AI

Symptoms

Bar code not 2-of-8 code

Printer detects bars but decoded result is not valid 2-of-8 code; error SR#0511 may appear

Ranked causes

1. Bar code label not installed (common)
2. Bar code label not parallel with spool end (common)
3. Bar code label damaged (common)
4. Bar code sensor misaligned or loose (occasional)
5. Donor bind or thermal head gap malfunction (occasional)
6. Bar code read FRU malfunction (rare)

First check

Verify bar code label is installed on donor supply spool

Test point: DONOR SUPPLY SPOOL
Expected: Bar code label present

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

Paper picking malfunction or paper jam

Printer does not pick paper from tray; picking cycle fails; system displays error codes 501 or 502

Ranked causes

1. Low humidity causing paper adhesion problem (occasional)
2. Tray platen springs damaged or platen not moving (common)
3. Picker motor failure or voltage not reaching motor (occasional)
4. Stepper motor or roller assembly malfunction (occasional)
5. Paper curl or damage causing jam (common)
6. Controller board failure (rare)

First check

Verify paper is installed and free of curl or damage

Test point: Tray and paper condition
Expected: Paper present, no curl >0.500 in., no damage

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

Media sensing malfunction

System does not detect paper type (paper vs. transparency) or receiver size; LCD display does not update when paper inserted

Ranked causes

1. Receiver type sensor loose on picker mechanism (common)
2. Receiver type sensor not properly seated on controller board connector P8 (occasional)
3. Receiver threshold adjustment out of specification (occasional)
4. Picker assembly failure (rare)
5. Controller board failure (rare)

First check

Verify receiver type sensor is not loose on picker mechanism

Test point: Picker mechanism mounting
Expected: Sensor securely mounted

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

Media type mismatch message on front panel

Front panel displays media type mismatch error when loading media

Ranked causes

1. Tray slider in incorrect position (common)
2. Wrong size receiver for installed donor ribbon (occasional)
3. Ribbon not installed with non-8x10 or A-size tray (occasional)
4. Ribbon installed with 8x10 tray incompatible combination (occasional)
5. Tray Type Sensor, Bar Code Sensor, SAB or IOCB failure (occasional)

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

Donor does not transport correctly

Donor supply or take-up spools not rotating or moving at incorrect speed

Ranked causes

1. Supply motor voltage incorrect (occasional)
2. Take-up motor voltage incorrect (occasional)
3. Motor resistance out of specification (rare)
4. Controller board not supplying motor voltage (rare)

First check

Measure supply motor voltage in ADVANCE mode

Test point: TP3 PIN 5 (red) to PIN 6 (black)
Expected: -10.7 V DC, ±0.2 V
Tools: Digital volt meter

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

Error codes 608, 609, 60A, 60C, 719

Cardiograph displays error codes 608, 609, 60A, 60C, or 719, typically during initialization or print cycle

Ranked causes

1. Thermal head data cable loose or disconnected (common)
2. Defective thermal head data cable (occasional)
3. Defective thermal head assembly (occasional)
4. Defective controller board (rare)

First check

Check thermal head version information

Test point: [DIAG: ENG VER #s] [VER: H ____]
Expected: No [BAD MEM] or [NONE] displayed

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

No printed image high voltage

Printer completes print cycle but no image appears on the output

Ranked causes

1. AC voltage not reaching power supply or switch (common)
2. Power supply DC output to thermal head insufficient or missing (common)
3. Harness connection to thermal head disconnected or broken (occasional)
4. Thermal head heat sink assembly faulty (rare)

First check

Verify AC voltage at back of plug

Test point: Black and blue wire connectors at plug rear
Expected: ≈115 V AC or ≈250 V AC
Tools: Digital volt meter

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

Pinch mechanism not closing properly

LCD reads PINCH: CLOSE but receiver not pinched evenly or can be pulled from corners

Ranked causes

1. Pinch motor failure or insufficient force (common)
2. Pinch roller misalignment or wear (common)
3. Pinch arm spring weak or broken (occasional)
4. Pinch cam or shaft misalignment (occasional)

First check

Receiver pinch evenness and holddown

Test point: Receiver position and force on both front corners
Expected: Receiver pinched evenly; cannot be pulled from either front corner

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

Power indicator LED not illuminated high voltage

Printer does not operate; power LED is dark when unit is energized

Ranked causes

1. No AC voltage at power plug connector (common)
2. Power switch faulty or wiring disconnected (occasional)
3. Power supply DC output failure (occasional)
4. Controller board LEDs not illuminated despite correct voltages (rare)

First check

Verify power cord and outlet connection

Test point: Power cord back of plug connector
Expected: Cord firmly seated; outlet operational

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

Tray not detected or tray size not recognized

LCD display shows [NO PAPER] or does not display correct tray size when tray is inserted; tray selection does not change during diagnostic test

Ranked causes

1. Tray code label incorrectly installed or partially removed (common)
2. Tray code sensor misaligned or damaged (occasional)
3. Tray code sensor cable loose or connector P11 not seated (occasional)
4. Controller board failure (rare)

First check

Verify tray is installed correctly and size matches receiver

Test point: Tray seating
Expected: Tray fully seated; selected size matches receiver type

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

Donor advance motors not operating

LCD reads DNR: ADVANCE but donor take-up and supply motors do not rotate or LCD does not display color sequence

Ranked causes

1. Take-up motor failure (common)
2. Supply motor failure during advance (common)
3. Spindle or gear blockage (occasional)

First check

Donor color sequence display during advance

Test point: LCD during advance with door closed
Expected: LCD reads DNR: CLR = YEL, MAG/BLK, CYN, or LAM; changes YEL, MAG, CYN sequence

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

Donor barcode sensor not reading type

LCD displays REWINDING instead of showing barcode read or TYPE OK result

Ranked causes

1. Barcode sensor misalignment or fouling (common)
2. Donor barcode label missing or damaged (occasional)
3. Barcode reader circuit failure (occasional)

First check

Barcode sensor reading and type detection

Test point: LCD during READ TYPE test
Expected: LCD reads DNR: TIGHTENING, READING, REWINDING then TYPE OK - > ## (type number)

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

Donor color sensing not detecting patches

LCD does not display correct donor color (YEL, MAG, CYN, or LAM) when door closed or donor position incorrect

Ranked causes

1. Donor sensor misalignment or fouling (common)
2. Donor LED failure (occasional)
3. Controller board sensor input failure (occasional)

First check

Donor color display on closed door with advancing donor

Test point: LCD display during advance test
Expected: YEL, MAG, CYN displayed in sequence as LCD reads DNR: CLR = YEL, MAG/BLK, CYN, or LAM

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

Donor patch color not detected correctly

Donor color patches (YEL, MAG/BLK, CYN, LAM) produce incorrect or no voltage readings

Ranked causes

1. FAN BRACKET ASSEMBLY alignment incorrect (occasional)
2. Donor detector (ROLLER ASSEMBLY) malfunction (occasional)
3. Controller board color detection logic failure (rare)

First check

Measure GREEN LED voltage at YEL patch

Test point: TP8 PIN 5 to TP4 PIN 6 (GROUND)
Expected: < 0.5 V DC, <0.5 V
Tools: Digital volt meter

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

Donor patch sensing LED not illuminated

Blue and/or green indicator LEDs on FAN BRACKET not lighting

Ranked causes

1. 12V power not present at LED board (occasional)
2. LED/FAN BRACKET HARNESS cable disconnected or open (occasional)
3. Controller board P7 voltage supply failure (rare)

First check

Measure 12V at FAN BOARD red wire

Test point: FAN BOARD CONNECTOR P2, red wire to black wire
Expected: 12 V DC
Tools: Digital volt meter

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

Donor rewind clutch not stepping correctly

LCD does not display CLR=MAG/BLK or take-up clutch does not step counterclockwise during rewind

Ranked causes

1. Take-up motor step function failure (common)
2. Supply motor step function failure (common)
3. Controller board step control malfunction (occasional)

First check

Take-up clutch gear step function with door open

Test point: Donor take-up clutch gear
Expected: LCD reads CLR=MAG/BLK; take-up clutch steps counterclockwise, supply clutch turns clockwise

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

Donor sensing not detecting with door closed during rewind

LCD does not display correct color sequence (CYN, MAG, YEL) when door closed during rewind advance

Ranked causes

1. Donor sensor blocked or misaligned with door closed (common)
2. Donor position detection failure (occasional)
3. Controller board sensor input circuit failure (occasional)

First check

Donor color sequence with door closed during rewind advance

Test point: LCD display during closed door advance
Expected: LCD reads DNR: CLR=CYN, MAG/BLK, YEL, or LAM; changes CYN, MAG, YEL sequence

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

Donor supply clutch not adjusting tension

LCD does not display color during slack adjustment or clutch does not turn clockwise to adjust donor tension

Ranked causes

1. Supply motor failure (common)
2. Supply clutch malfunction or slipping (common)
3. Controller board failure affecting clutch control (occasional)

First check

Donor supply clutch clockwise rotation during slack adjustment

Test point: Donor supply clutch
Expected: CLR=MAG/BLK displayed on LCD, clutch turns clockwise

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

Donor take-up and supply clutches not operating with door open

LCD does not display color or clutches do not turn when door open during rewind test

Ranked causes

1. Supply motor failure (common)
2. Take-up motor failure (common)
3. Clutch gears stripped or disengaged (occasional)

First check

Donor clutch gear rotation with door open

Test point: Donor supply and take-up clutch gears
Expected: LCD reads CLR=MAG/BLK; supply clutch turns counterclockwise, take-up clutch turns clockwise

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

Error code 610 - display not illuminating

Error code 610 with 16-segment LCD display not illuminating

Ranked causes

1. Display cable disconnected (common)
2. Defective display panel (occasional)
3. Defective controller board (rare)

First check

Verify display cable connection

Test point: DISPLAY CABLE connectors
Expected: Cable firmly seated and connected

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

LOAD PHOTO message during engine test print

LOAD PHOTO message displayed during engine test print (after ENGINE READY confirmed). Indicates paper tray issue, paper jam, or paper feed motor control wiring fault.

Ranked causes

1. Paper tray empty (common)
2. Paper jam during pick cycle (occasional)
3. Incorrect wiring to SAB P8 (paper pick motor control) (occasional)

First check

Verify paper is loaded in tray

Test point: Paper tray interior
Expected: A-size photo paper present and properly seated

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

Paper jam in picker cycle caution

Receiver jammed in paper chute, tray, or picker mechanism during picking

Ranked causes

1. Receiver not installed or media mismatch (common)
2. Picker mechanism malfunction (occasional)
3. Environmental conditions out of specification (occasional)

First check

Open door and inspect for paper in roller assembly

Test point: ROLLER ASSEMBLY
Expected: No paper jam visible

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

Pinch mechanism not opening after closing

LCD reads PINCH: OPEN but pinch does not release or receiver cannot be removed

Ranked causes

1. Pinch motor failure in reverse (common)
2. Pinch mechanism jam or binding (occasional)
3. Controller board open command failure (occasional)

First check

Pinch mechanism opening completion

Test point: Pinch motor and LCD during opening
Expected: LCD reads PINCH: OPENING then PINCH: OPEN; receiver can be removed

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

Platen brake not holding or resisting correctly

LCD reads MTRS: BRAKE ON but platen roller does not rotate with resistance or rotates more than 1/4 turn in reverse

Ranked causes

1. Platen brake friction loss or wear (common)
2. Brake spring weak or misadjusted (occasional)
3. Brake solenoid or actuator failure (occasional)

First check

Platen roller resistance with brake engaged

Test point: Platen roller
Expected: Platen roller rotates forward with noticeable resistance

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

Stepper motor not stepping forward

LCD reads MOTORS: STEPPING but stepper motor, intermediate gear, or traction roller does not rotate forward

Ranked causes

1. Stepper motor forward drive failure (common)
2. Intermediate gear jam or wear (occasional)
3. Traction roller binding or flat spot (occasional)

First check

Stepper motor forward rotation with intermediate gear and traction roller

Test point: Stepper motor and driven components
Expected: All components rotate forward smoothly while SETUP/ONLINE held and LCD reads MOTORS: STEPPING

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

Thermal head data cable connection error

Error code 719 displayed indicating thermal head data communication failure

Ranked causes

1. Thermal head data cable loose or unseated (common)
2. Thermal head data cable damaged or defective (occasional)
3. Thermal head connector or board defective (occasional)

First check

Verify cable connections at both ends

Test point: CONNECTOR P5 on CONTROLLER BOARD and THERMAL HEAD CONNECTOR
Expected: Cable fully seated with no gaps

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

Thermal head does not move to retract, load, or engage positions caution

During [DIAG: HEAD TEST], thermal head does not move when LCD commands RETRACT, LOAD, or ENGAGE positions.

Ranked causes

1. Thermal head lift motor malfunction (common)
2. Thermal head lift sensors malfunction (occasional)
3. Controller board malfunction (occasional)

First check

Command thermal head to retract position

Test point: LCD display [HEAD: RETRACT] then [HEAD: RETRACTING]
Expected: Thermal head moves to RETRACT POSITION

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

Thermal head heating element malfunction

Thermal head does not heat to correct operating temperature; heater LED not illuminated or temp not increasing

Ranked causes

1. Thermal fuse open or jumper not installed correctly (common)
2. Controller board not supplying heater voltage (occasional)
3. Thermal head heater element defective (occasional)

First check

Test heater operation in diagnostics

Test point: LCD display and HEATER LED
Expected: HEATER LED illuminated and temperature increases

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

Thermal head lift motor not engaging

LCD displays HEAD: ENGAGING but thermal head does not move to engage position

Ranked causes

1. Thermal head lift motor malfunction (common)
2. Thermal head lift mechanism jam or misalignment (occasional)
3. Thermal head lift sensor failure (occasional)

First check

Thermal head movement when engaging

Test point: Thermal head physical position
Expected: HEAD: ENGAGING on LCD, thermal head moves into engage position

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

Thermal head temperature does not increase during heating caution

LCD shows [TEMP:____°C] but digits do not increase when heater is energized during [TEMP: HEATER] test.

Ranked causes

1. Style 1 thermal head fuse open (for Style 1 heads only) (common)
2. Jumper on TP6 missing from controller board (Style 1) (common)
3. Heater light does not illuminate; 12 V DC not present or controller board malfunction (occasional)

First check

Inspect heater light on controller board during [TEMP: HEATER] test

Test point: Heater light lower right corner of controller board
Expected: Illuminates when heater energized

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

Bar code sensor voltage unresponsive to adjustment

Voltage reading remains unchanged at 4.5-5.5V when adjusting potentiometer R16 left and right

Ranked causes

1. SAB connections defective or ribbon cable disconnected (common)
2. IOCB (Input/Output Control Board) failure (common)

First check

Measure voltage while adjusting R16 potentiometer

Test point: TP3.3 (+) and TP6.6 (-) on IOCB
Expected: Voltage change beyond 4.5-5.5V range
Tools: DVM

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

Calibration verification: Printhead serial number key mismatch

After printhead calibration update, 'Warning, Calibration Failed' message appears, indicating serial number key does not match printhead or floppy disk

Ranked causes

1. Entered key serial number does not match printhead barcode label serial number (common)
2. Floppy diskette serial number does not match printhead serial number (common)

First check

Verify entered key matches printhead barcode serial number

Test point: Printhead barcode label and KEYS menu entry
Expected: Key format 99SSSSSS00 matches 6-character printhead serial on barcode exactly

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

Calibration: Donor sensor LED voltage (BLUE) high voltage

Set the BLUE LED reference voltage on the donor sensor. Required when installing a new donor or controller. Position donor yellow patch over LED emitters.

Ranked causes

1. BLUE LED voltage out of specification after installation (common)
2. LED emitter position misaligned after donor board adjustment (occasional)

First check

Verify correct donor patch position and close door

Test point: Donor material over FAN BRACKET LEDs
Expected: Yellow donor patch covering BLUE and GREEN LEDs

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

Error code 740

Error code 740 indicating PROM version mismatch or compatibility failure

Ranked causes

1. PROM U19 or U20 version mismatch (common)
2. Defective controller board (occasional)

First check

Run PROM version match test

Test point: [DIAG: CTRLR TEST] [CTRLR: MATCH VERS] or [TEST ALL]
Expected: No [SR# 740] displayed

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

Error code 757

Error code 757 indicating DSP PROM or digital signal processor failure

Ranked causes

1. Defective DSP PROM (common)
2. Defective controller board (occasional)

First check

Run DSP PROM test

Test point: [DIAG: CTRLR TEST] [CTRLR: DSP] or [DSP PROM]
Expected: No [SR# 757] displayed

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

Error codes 618 and 60B

Error codes 618 or 60B indicating missing or corrupt EEPROM data in controller or thermal head

Ranked causes

1. Missing EEPROM data on controller (common)
2. Missing EEPROM data on thermal head (common)

First check

Check controller EEPROM versions for missing data

Test point: [DIAG: ENG VER #s] and [DIAG: PRN USAGE]
Expected: No [NONE] in CR, CT, PR, ER, ET, PWR, P-S, P-C, RFL, TRN, B-1

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

Error codes 741, 742

Error codes 741 or 742 indicating PROM content or checksum failure

Ranked causes

1. PROM U19 or U20 defective or corrupted (common)
2. Defective controller board (occasional)

First check

Run PROM content test

Test point: [DIAG: CTRLR TEST] [CTRLR: PROM 0], [PROM 1], or [TEST ALL]
Expected: No [SR# 741] or [SR# 742] displayed

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

LCD display not showing diagnostic messages

LCD fails to display expected diagnostic menu or status messages when diagnostics are entered

Ranked causes

1. POWER SUPPLY malfunction (occasional)
2. CONTROLLER BOARD malfunction (occasional)

First check

Verify printer is energized

Test point: Power indicator
Expected: Power is on

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

LOAD RIBBON message with ribbon not unraveled during SAB test

LOAD RIBBON message displayed when ribbon has not unraveled inside printer during SAB loopback test. Indicates ribbon not installed or bar code sensor wiring fault.

Ranked causes

1. Ribbon not installed in printer (common)
2. Incorrect wiring to SAB P2 (bar code sensor) (occasional)

First check

Verify ribbon is installed

Test point: Ribbon cartridge slot in printer
Expected: A-size color ribbon cartridge installed and threaded

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

Paper jam in pinch cycle caution

Receiver jammed in roller assembly during printing after being pinched

Ranked causes

1. Receiver not advancing correctly into nip (common)
2. Pinch mechanism malfunction (occasional)

First check

Open door and inspect roller assembly for jam

Test point: PINCH ROLLER, CAPSTAN TRACTION ROLLER
Expected: No jam visible

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

Picker mechanism not advancing for paper or transparency

LCD reads MTRS: PICKING but picker mechanism does not move forward to pick paper or transparency

Ranked causes

1. Picker motor forward failure (common)
2. Picker mechanical jam or binding (occasional)

First check

Picker mechanism forward advance

Test point: Picker mechanism position
Expected: LCD reads MTRS: PICKING; picker advances forward to pick position

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

Picker mechanism not retracting

LCD reads MTRS: RETRACTING but picker mechanism does not return to home position

Ranked causes

1. Picker motor reverse failure (common)
2. Picker mechanical binding on retract (occasional)

First check

Picker mechanism retraction to home

Test point: Picker mechanism position
Expected: LCD reads MTRS: RETRACTING; picker returns to home position

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

Ribbon errors on front panel

Front panel displays ribbon error messages including 'Load Ribbon', 'Invalid Ribbon', or 500-series error codes

Ranked causes

1. Software problems (common)
2. Bar Code Sensor, SAB, or IOCB failure (occasional)

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

SERVICE REQUEST 0700 message during SAB test

SERVICE REQUEST 0700 error message displayed during SAB loopback test. Indicates head position or motor control sensor wiring fault.

Ranked causes

1. Incorrect wiring to SAB P2 (head position sensors) (common)
2. Incorrect wiring to SAB P1 (motor controls) (common)

First check

Inspect SAB P2 head position sensor wiring

Test point: SAB P2 connector and position sensor lines
Expected: All pins connected correctly; cable fully seated; no bent or damaged pins

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

Status indicates 8.5x11 media when 8x10 film is installed

Printer displays incorrect media size on status display despite correct film being loaded

Ranked causes

1. Tray sliver in incorrect position (common)
2. Tray type sensor, SAB or IOCB failure (occasional)

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

Stepper motor not stepping reverse

LCD reads MOTORS: STEPPING but stepper motor does not rotate in rewind position

Ranked causes

1. Stepper motor reverse drive failure (common)
2. Intermediate gear jam in reverse (occasional)

First check

Stepper motor reverse rotation

Test point: Stepper motor during reverse
Expected: LCD reads MOTORS: STEPPING; motor rotates in rewind position

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

Thermal head cooling fans not operating

Cooling fans fail to spin during fan test; thermal head temperature does not decrease

Ranked causes

1. Controller board not supplying fan voltage (common)
2. Fan bracket harness or assembly defective (occasional)

First check

Observe fan operation during diagnostics

Test point: Thermal head fan area
Expected: Fans spin; LCD reads TEMP: FAN; temp decreases

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

Thermal head does not move

Thermal head lift motor fails to move in RETRACT, LOAD, or ENGAGE positions during diagnostics test

Ranked causes

1. Motor voltage not supplied by controller board (common)
2. Motor bracket assembly defective (occasional)

First check

Measure voltage at motor

Test point: TP3, PIN 2 to TP4, PIN 6 (GROUND)
Expected: ≈ 10.5 V DC, approximately
Tools: Digital volt meter

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

Thermal head lift motor not retracting

LCD displays HEAD: RETRACT but thermal head does not move to retract position

Ranked causes

1. Thermal head lift motor malfunction in reverse (common)
2. Thermal head lift mechanism jam or misalignment (occasional)

First check

Thermal head retraction when retracting

Test point: Thermal head physical position
Expected: HEAD: RETRACT on LCD, thermal head in retract position

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

Thermal head lift sensor malfunction

Thermal head position not detected correctly; voltage does not change during position transitions

Ranked causes

1. Controller board not detecting sensor signal (occasional)
2. Thermal head lift cable or sensor defective (common)

First check

Measure sensor voltage during retract

Test point: TP4, PIN 2 to TP4, PIN 6 (GROUND)
Expected: 0 V DC to 5 V DC to 0 V DC during RETRACT

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

Thermal head temperature control malfunction caution

Thermal head temperature not regulating properly; heater/fan control not operating correctly; temperature in wrong state (cold, cool, warm, hot, normal)

Ranked causes

1. Heater not operating (unknown)
2. Fan not operating (unknown)

First check

Verify heater output ADC value in normal operation with heater on

Test point: Thermal head controller ADC
Expected: 40-56 ADC units in normal heating mode, +/-16 units

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

Tray Type Detector #4 voltage out of specification

DVM reading at test points TP4.2 (+) and TP6.6 (-) not within expected range when 8x10 or 8.5x11 media trays inserted

Ranked causes

1. Tray Type Detector #4 adjustment required or sensor misalignment (common)
2. Sensor hardware defect or component failure (rare)

First check

Measure voltage with 8x10 tray inserted

Test point: TP4.2 (+), TP6.6 (-)
Expected: Less than 0.25 Volts, <
Tools: DVM (Digital Volt Meter)

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

Bar code sensor output excessive voltage variation

DVM reading varies more than 1V total but does not pull below 0.22V when rotating

Ranked causes

1. IOCB (Input/Output Control Board) failure (common)

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Bar code sensor voltage cannot reach minimum threshold

Voltage varies during rotation but cannot go below 0.22V

Ranked causes

1. Sensor malfunction (common)

First check

Measure voltage as donor spool rotates through bar code

Test point: TP4.3 (+) and TP4.6 (-) on engine controller board
Expected: Voltage below 0.22V and above 3.5V
Tools: DVM

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

Base enclosure walls misaligned caution

Mechanical components out of position causing media jams, donor advance failure, print artifacts, or system not operating; condition may occur during transport or after equipment damage

Ranked causes

1. Transport damage or improper handling (common)

First check

Verify base enclosure walls are in correct position

Test point: Base enclosure structure
Expected: Walls properly aligned and secured

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

Blue and yellow donor patch LEDs not on with printer lid open

Donor type LEDs remain off when printer lid is open, indicating abnormal operation

Ranked causes

1. Faulty wiring at SAB connectors P7.E or P7.S (common)

First check

Measure voltage at IOCB test points

Test point: TP2.1 (+) and TP2.4 (-) on IOCB
Expected: approximately 12 Volts
Tools: DVM

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

Blue and yellow donor patch LEDs on with printer lid open

Donor type LEDs operating normally when printer lid is open

Ranked causes

1. Normal operation - SAB and IOCB functioning correctly (common)

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Calibration: 4th tray sensor LED current

Adjust sensor LED current to appropriate level for 4th media tray detection on IOCB4SLICK or IOCB4NS boards

Ranked causes

1. 4th tray sensor requires LED current adjustment (common)

First check

Verify board installation and printer state

Test point: IOCB4SLICK/IOCB4NS installed in operational printer
Expected: Printer powered ON and in READY state

17 more checks with pass and fail actions, 1 corrective action, and part numbers are in ServiceForge. Connect ServiceForge to your AI

Calibration: Bar code sensor voltage high voltage

Set the bar code sensor reference voltage to allow correct reading of donor bar code label. Required when installing new controller board or donor supply bracket, or after error codes 510/511.

Ranked causes

1. Bar code sensor voltage out of specification (common)

First check

Install test equipment and prepare for measurement

Test point: DONOR SUPPLY TEST SPOOL, TP4 connector
Expected: Test spool seated on spindle tabs with 50-50 duty cycle label installed

2 more checks with pass and fail actions, 1 corrective action, and part numbers are in ServiceForge. Connect ServiceForge to your AI

Calibration: Base enclosure walls damage

Rear wall, side wall, or locking tabs are bent or damaged, affecting printer alignment and operation

Ranked causes

1. Bent or damaged rear wall, side wall, or locking tabs (unknown)

First check

Inspect locking tabs for bending

Test point: LOCKING TABS
Expected: Not bent up or to left or right sides

2 more checks with pass and fail actions, 1 corrective action, and part numbers are in ServiceForge. Connect ServiceForge to your AI

More symptoms

Calibration: Donor sensor LED voltage (GREEN)
Calibration: Donor supply bracket alignment
Calibration: Door interlock switch position
Calibration: Picker penetration
Calibration: Roller assembly alignment
Calibration: Stepper motor reference voltage
Calibration: Thermal head load gap
Calibration: Tray Type Detector #4
CLOSE COVER message during SAB test
DIAGNOSTIC SELECTION SWITCH not in correct position
Donor sensor calibration verification with all color patches
Engine Loop Back Cable not installed (NP1660 models)
ENGINE READY message; SAB test passed
EP-1660 printhead calibration data installation
Error code 718
Error codes 600, 601, 602, 603
Error codes 720, 721
Error codes 738, 739
Error codes 748, 749, 74A, 74B, 74C, 74D
Error codes 760-773, 76E, 76F, 76A, 76B, 76C, 76D
Failure history data corrupted or unavailable
Front panel blank or cannot run engine print
J1401 or P5 connector not removed
LOAD RIBBON message with ribbon unraveled during SAB test
OPEN COVER/CHANGE RIBBON message during SAB test
OPEN COVER/CLEAR RIBBON JAM message during SAB test
Picker penetration out of specification
Print usage data shows mismatch with failure history
Printer does not print after initialization
Printer initialization error on startup
Printer initialization fails or shows init error
Thermal head load gap out of specification
Thermal head temperature does not decrease during cooling
Tray platen curl exceeds specification
Unable to access diagnostics

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

Error codes

Code	Meaning	Trigger	Severity
`0000`	Ready to print state	Print engine ready for a print command	info
`0001`	Ready with trouble state	Engine ready but a trouble condition exists	warning
`0002`	Ready, wait for stable printhead temperature state	Engine ready but printhead temperature stabilizing	info
`0003`	Ready state with special configuration	Engine ready with non-standard configuration active	info
`0010`	Wait for platform to boot state, mechanism initialization required	Engine awaiting platform boot completion	warning
`0011`	Waiting to initialize full mechanism state	Engine requires full mechanism initialization	warning
`0012`	Waiting to initialize donor state	Engine requires donor system initialization	warning
`0013`	Waiting to perform mini mechanism initialization state	Engine requires partial mechanism initialization	info
`0014`	Waiting to initialize full mechanism with tray out state	Full mechanism initialization required with tray removed	warning
`0020`	Door open state	Access door detected open	critical
`0021`	Tray out state	Receiver tray not installed or removed	critical
`0022`	Door open and tray out state	Both door open and tray removed detected simultaneously	critical
`0023`	Door error state	Door mechanism malfunction detected	error
`0024`	Door open with door error state	Door physically open and error condition detected	critical
`0025`	Tray out with door error state	Tray removed and door error condition present	error
`0026`	Door open and tray out with door error state	Door open, tray missing, and door malfunction detected	critical
`0027`	Tray error state	Tray mechanism malfunction detected	error
`0028`	Door open with tray error state	Door open and tray mechanism error detected	error
`0029`	Tray out with tray error state	Tray removed and tray error condition detected	error
`002A`	Door open and tray out with tray error state	Door open, tray missing, tray error detected	error
`002B`	Door open with mechanism initialization required state	Door open and system requires mechanism reinit	warning
`002D`	Door open and tray out with mechanism initialization required state	Door and tray conditions with pending initialization	warning
`002E`	Door and tray error state	Both door and tray mechanism errors detected	error
`002F`	Door open with door and tray error state	Door open with dual door and tray sensor failures	critical
`0030`	Tray out with door and tray error state	Tray missing with dual error condition	error
`0031`	Door open and tray out with door and tray error state	Door open, tray missing, both system errors detected	critical
`0040`	Error after cold start complete, wait for restore command state	Error condition detected after cold start completion	error
`0041`	Error before cold start complete, wait for restore command state	Error condition detected during cold start sequence	error
`0042`	Service request is pending, wait for platform to boot state	Service condition waiting for platform boot completion	warning
`0050`	Diagnostic state	Engine in diagnostic mode	info
`0101`	Print button pressed, no response	Print button pressed but no engine response	error
`0102`	Print button pressed while control panel under external control	Print button activated during external control mode	warning
`0103`	Print button released	Print button press action completed	info
`0104`	Test print started	Test print command executed	info
`0105`	Cancel button pressed, no response	Cancel button pressed but no engine response	error
`0106`	Cancel button pressed while control panel under external control	Cancel button activated during external control mode	warning
`0107`	Cancel button released	Cancel button action completed	info
`0108`	Started mechanism initialization	Mechanism initialization sequence begun	info
`0109`	Cold start	System cold startup sequence initiated	info
`010B`	Setup button pressed, no response	Setup button pressed but no engine response	error
`010C`	Setup button pressed while control panel under external control	Setup button activated during external control mode	warning
`010D`	Setup button released	Setup button press action completed	info
`010E`	Go to diagnostic operation	Transition to diagnostic mode requested	info
`010F`	Go to normal operation	Return to normal operational mode from diagnostic	info
`0120`	Receiver type changed	Different receiver type detected in tray	warning
`0121`	Receiver type changed, no response	Receiver type changed but no system response	error
`0123`	Receiver tray changed, no response	Tray changed detected without sensor response	error
`0124`	Receiver tray removed	Receiver tray detected as removed	info
`0125`	Receiver tray replaced	Receiver tray detected as reinstalled	info
`0126`	Receiver size changed	Different receiver size detected	warning
`0127`	Door opened	Door opening detected during operation	warning
`0128`	Door closed	Door closing detected	info
`0129`	Door opened or closed, no response	Door state change detected but no system response	error
`012A`	Door opened while engine busy	Door opened during active printing or operation	critical
`012B`	Go to engine controls control panel operation	Switch to engine control panel mode requested	info
`012C`	Go to external device controls control panel operation	Switch to external device control mode requested	info
`012D`	Donor type changed	Different donor type detected or barcode read	warning
`0200`	Head too hot	Printhead temperature exceeds safe limit	error
`0201`	Head too cold	Printhead temperature below operating minimum	warning
`0202`	Head temperature OK	Printhead temperature within operating range	info
`0301`	READ when WRITE expected	Received READ command instead of expected WRITE	error
`0302`	WRITE when READ expected	Received WRITE command instead of expected READ	error
`0303`	Undefined command code	Received unrecognized command code	error
`0304`	Command code not supported	Command code is not supported by current engine	error
`0305`	Undefined Item Code	Item code in command is not recognized	error
`0306`	Item code not supported	Item code is not supported by current configuration	error
`0307`	Item code not valid now	Item code is valid but not in current system state	warning
`0308`	SET of item not allowed	Attempt to SET a read-only item	error
`0309`	GET of item not allowed	Attempt to GET a write-only item	error
`030A`	START of item not allowed	Attempt to START an item that does not support it	error
`030B`	Invalid data	Data payload does not meet format requirements	error
`030C`	Data value not supported	Data value is outside supported range or set	error
`030D`	Wrong data length for item	Data length does not match item requirements	error
`030E`	Receiver size mismatch	Receiver size does not match current configuration	error
`030F`	Receiver type mismatch	Receiver type does not match current configuration	error
`0310`	Must set interpolation points first	Command requires interpolation points not yet configured	error
`0311`	Controller EEPROM is marked bad due to past failure	Controller EEPROM detected as bad from previous failure	critical
`0312`	Printhead EEPROM is marked bad due to past failure	Printhead EEPROM detected as bad from previous failure	critical
`0319`	Printhead correction data previously marked absent (EEPROM functional)	Printhead correction data not available but EEPROM recoverable	warning
`031A`	STATUS READ when WRITE expected	STATUS READ received instead of expected WRITE	error
`031B`	STATUS READ when READ expected	STATUS READ received instead of expected READ	error
`031E`	Item code not valid for selected media combination	Item code incompatible with current media configuration	error
`0320`	Selected ray sensitometry table is missing (Sxxx)	Requested sensitometry table not found in configuration	error
`0321`	Missing raw sensitometry table for media installed (Sxxx)	Installed media lacks required sensitometry table	error
`0322`	Selected Dmin and Dmax values are missing (Dxx)	Required density min/max values not available	error
`0323`	Dmin and Dmax values for media installed are missing (Dxx)	Installed media lacks required density calibration	error
`0324`	Selected base enable width is missing (Exxx)	Base enable width parameter not found	error
`0325`	Base enable width for media installed is missing (Exxx)	Installed media lacks base enable width configuration	error
`0326`	Selected thermal scale factors are missing (Tx)	Thermal scale factors not found in configuration	error
`0327`	Thermal scale factors for media installed are missing (Tx)	Installed media lacks thermal scale factors	error
`0328`	Selected transient parasitic data is missing (Txx)	Transient parasitic correction data not available	error
`0329`	Transient parasitic data for media installed is missing (Txx)	Installed media lacks transient parasitic data	error
`032A`	Selected thermal smear factors are missing (Sx)	Thermal smear correction factors not found	error
`032B`	Thermal smear factors for media installed are missing (Sx)	Installed media lacks thermal smear factors	error
`032C`	Selected pulse position scale factor is missing (Px)	Pulse position scaling parameter not available	error
`032D`	Pulse position scale factor for media installed is missing (Px)	Installed media lacks pulse position calibration	error
`032E`	Missing raw pulse position table (PPR)	Pulse position reference table not found	error
`032F`	Selected sampled pulse effectiveness is missing (Gxx)	Pulse effectiveness sampling data not available	error
`0330`	Sampled pulse effectiveness for media installed is missing (Gxx)	Installed media lacks pulse effectiveness calibration	error
`0333`	Item code is invalid with current toggle options setting	Item code incompatible with active toggle options	error
`0334`	Mismatch between calibration table selected and donor currently installed	Selected calibration not compatible with installed donor	error
`0335`	Overriding selected lamination state	Lamination setting being overridden by system	warning
`0336`	Overriding selected pass count setting	Pass count being overridden by system logic	warning
`0337`	Data not passed to Digital Signal Processor (DSP), CPU/DSP interface may be down	DSP communication failure during data transfer	critical
`033A`	Calibration clip level value is missing	Calibration clip level parameter not found	error
`033B`	Overriding entered Y skip value	Y skip value being overridden by system	warning
`0400`	Donor advance failure	Donor not advancing properly during operation	error
`0401`	Donor rewind failure	Donor not rewinding properly	error
`0402`	Donor type barcode sensor did not detect any bars	Barcode on donor cartridge not read by sensor	warning
`0403`	A valid 2-of-8 donor type barcode was read; however, the donor type is not supported	Barcode readable but donor type not in approved list	error
`0408`	Failure to picker receiver	Receiver not picked from tray properly	error
`090B`	DSP BLOCK, CHECKSUM	DSP checksum failure variant	critical
`091B`	DSP BLOCK, CHECKSUM	DSP block checksum error	critical
`092B`	DSP BLOCK, CHECKSUM	DSP checksum failure	critical
`093B`	DSP BLOCK, CHECKSUM	DSP block error	critical
`094B`	DSP BLOCK, CHECKSUM	DSP checksum error detected	critical
`500`	No RECEIVER at LEAD EDGE SENSOR when expected	Receiver not detected at expected position	critical
`501`	RECEIVER stuck at LEAD EDGE SENSOR	Receiver jammed at lead edge sensor position	error
`502`	RECEIVER size change without removing TRAY	Different receiver size detected without tray removal	warning
`503`	Invalid TRAY size input	Tray size parameter out of range or invalid	error
`510`	BAR CODE LABEL not correct/BAR CODE SENSOR or FRU malfunction	Barcode label invalid or sensor failure detected	error
`511`	BAR CODE LABEL not correct or has damage/BAR CODE SENSOR or FRU malfunction	Barcode damaged or sensor/component malfunction	error
`600`	EEPROM memory error - Controller	Memory corruption or data loss in controller EEPROM detected on initialization	critical
`600`	CONTROLLER PROM or BOARD failure	Controller PROM or circuit board malfunction detected	critical
`601`	CONTROLLER PROM or BOARD failure	Controller PROM or circuit board malfunction	critical
`601`	EEPROM memory error - Controller	Memory corruption or data loss in controller EEPROM detected on initialization	critical
`602`	EEPROM memory error - Controller	Memory corruption or data loss in controller EEPROM detected on initialization	critical
`602`	CONTROLLER PROM or BOARD failure	Controller PROM or board malfunction	critical
`603`	CONTROLLER PROM or BOARD failure	Controller PROM or board failure	critical
`603`	EEPROM memory error - Controller	Memory corruption or data loss in controller EEPROM during initialization	critical
`608`	Thermal head data communication error	Thermal head EEPROM data missing or communication failure during initialization or print	error
`609`	Thermal head data communication error	Thermal head EEPROM data missing or communication failure during initialization or print	error
`60A`	Thermal head data communication error	Thermal head EEPROM data missing or communication failure during initialization or print	error
`60B`	EEPROM data missing - Controller or Thermal Head	Missing critical EEPROM data detected during diagnostics	error
`60C`	Thermal head data communication error	Thermal head EEPROM data missing or communication failure during initialization or print	error
`610`	LCD or CONTROLLER BOARD	LCD display or controller board malfunction	error
`610`	Display panel not detected or not responding	16-segment LCD display not illuminating or not communicating	error
`618`	EEPROM data missing - Controller or Thermal Head	Missing critical EEPROM data detected during controller or thermal head test	error
`700`	Inboard THERMAL HEAD POSITION SENSOR #2 open	Head position sensor #2 circuit open	error
`700, 701, 702, 703`	Thermal head lift motor or sensor failure	Error codes displayed during HEAD TEST diagnostics or printer attempting thermal head position change	error
`701`	Inboard THERMAL HEAD POSITION SENSOR #2 blocked	Head position sensor #2 blocked or shorted	error
`702`	Outboard THERMAL HEAD POSITION SENSOR #1 open	Head position sensor #1 circuit open	error
`703`	Outboard THERMAL HEAD POSITION SENSOR #1 blocked	Head position sensor #1 blocked or short	error
`708`	DONOR PATCH SENSING LED not sensing DONOR	Donor patch sensor LED not detecting donor	error
`709`	DONOR SENSORS not stable	Donor sensor readings unstable or fluctuating	warning
`710`	DSP Linetime response times out	DSP did not respond within expected time	critical
`710, 711, 712`	Printer external mode communication error	Display of error codes when printer is in EXTERNAL MODE connected to computer; may not display during diagnostics or when not connected	warning
`711`	DSP Linetime response times out	DSP linetime response timeout	critical
`712`	DSP Linetime response times out	DSP response timeout condition	critical
`718`	CONTROLLER BOARD	Controller board malfunction	critical
`718`	ADC (Analog-to-Digital Converter) test failure	ADC circuit or test detected failure during controller self-test	error
`719`	Thermal head data cable communication failure	Error code 719 displayed during operation or power-up	error
`720`	Critical controller board failure	Unspecified critical failure detected during controller initialization	critical
`721`	Critical controller board failure	Unspecified critical failure detected during controller initialization	critical
`722`	Printer initialization error on startup	INIT ERROR message displayed or error code 722 during power-on or startup sequence	error
`730`	Thermal head cooling fan malfunction	Cooling fan fails to operate during fan diagnostics or thermal head temperature rises uncontrolled	warning
`733`	Thermal head heater malfunction	Heater LED not illuminated during heater test or thermal head temperature does not increase in diagnostics	error
`738`	RAM test failure - RAM bank 0	RAM 0 memory test failure during controller self-test	error
`738`	CONTROLLER, RAM	Controller RAM malfunction	critical
`739`	CONTROLLER, RAM	Controller RAM failure	critical
`739`	RAM test failure - RAM bank 1	RAM 1 memory test failure during controller self-test	error
`740`	PROGRAM PROMS or CONTROLLER BOARD	Program PROM or controller board failure	critical
`740`	PROM version mismatch or compatibility failure	PROM U19 and U20 versions do not match or are incompatible	error
`741`	PROM 0 content or checksum error	PROM 0 (U19) content corruption or checksum failure detected	error
`741`	PROGRAM PROMS or CONTROLLER BOARD	Program PROM or board malfunction	critical
`742`	PROGRAM PROMS or CONTROLLER BOARD	Program PROM or board failure	critical
`742`	PROM 1 content or checksum error	PROM 1 (U20) content corruption or checksum failure detected	error
`748`	PHM (oscillator or timing circuit) test failure	Phase-locked oscillator or related timing circuit test failure	error
`748`	PHM Failure	Print Head Module (PHM) malfunction	critical
`749`	PHM test failure	Phase-locked oscillator or timing circuit test failure	error
`74A`	PHM test failure	Phase-locked oscillator or timing circuit test failure	error
`74B`	PHM test failure	Phase-locked oscillator or timing circuit test failure	error
`74C`	PHM test failure	Phase-locked oscillator or timing circuit test failure	error
`74D`	PHM test failure	Phase-locked oscillator or timing circuit test failure	error
`750`	Unexpected write from DSP	DSP issued unexpected write command	error
`751`	Unexpected write from DSP	DSP unexpected write detected	error
`752`	Unexpected write from DSP	DSP write error	error
`753`	Unexpected write from DSP	Unexpected DSP write	error
`754`	Unexpected write from DSP	DSP write error condition	error
`755`	Unexpected write from DSP	Unexpected DSP write operation	error
`756`	Unexpected write from DSP	DSP write operation out of sequence	error
`757`	DSP PROM content or communication error	DSP PROM content corruption or DSP processor communication failure	error
`757`	DSP Set Verify Failure	DSP configuration verification failed	error
`760`	CONTROLLER BOARD	Controller board malfunction (series 760-773)	critical
`760`	PHM or subsystem failure	Phase-locked oscillator or related subsystem test failure during diagnostics	error
`761`	CONTROLLER BOARD	Controller board failure	critical
`762`	CONTROLLER BOARD	Controller board malfunction	critical
`763`	CONTROLLER BOARD	Controller board issue	critical
`764`	CONTROLLER BOARD	Controller board failure	critical
`765`	CONTROLLER BOARD	Controller board malfunction	critical
`766`	CONTROLLER BOARD	Controller board failure	critical
`767`	CONTROLLER BOARD	Controller board malfunction	critical
`768`	CONTROLLER BOARD	Controller board issue	critical
`769`	CONTROLLER BOARD	Controller board failure	critical
`76A`	Controller subsystem failure (extended range)	Unspecified subsystem test failure in extended error code range	error
`76B`	Controller subsystem failure (extended range)	Unspecified subsystem test failure in extended error code range	error
`76C`	Controller subsystem failure (extended range)	Unspecified subsystem test failure in extended error code range	error
`76D`	Controller subsystem failure (extended range)	Unspecified subsystem test failure in extended error code range	error
`76E`	Controller subsystem failure (extended range)	Unspecified subsystem test failure in extended error code range	error
`76F`	Controller subsystem failure (extended range)	Unspecified subsystem test failure in extended error code range	error
`770`	CONTROLLER BOARD	Controller board malfunction	critical
`771`	CONTROLLER BOARD	Controller board failure	critical
`772`	CONTROLLER BOARD	Controller board issue	critical
`773`	PHM or subsystem failure in upper range	Phase-locked oscillator or related subsystem test failure during diagnostics	error
`773`	CONTROLLER BOARD	Controller board malfunction	critical
`800`	General CONTROLLER BOARD	General controller board malfunction (series 800-857)	critical
`800-857`	Controller board failure indicated by control test	Running CTRLR TEST ALL in diagnostics shows error codes in this range	error
`900`	DSP BLOCK, CHECKSUM	DSP block checksum error (series 900-930)	critical
`900-930, 90B, 91B, 92B, 93B, 94B, 750-756`	Controller board failure indicated by comprehensive test	Running CTRLR TEST ALL in diagnostics shows error codes in this range	error
`BAD MEM or NONE`	PROM or controller board memory malfunction	BAD MEM or NONE message displays in EXTERNAL MODE	error
`DNR: TYPE_BAD>##`	Unsupported donor type (where ## is type number: 01=YMC, 02=YMCX, 03=BX, 04=YMC LONG, 05=YMC-7, 06=YMCX LONG, 07=YMCK)	Valid bar code read but donor type number not supported by printer	error
`DNR: TYPE>NONE`	Type code not detected	BAR CODE SENSOR did not detect any bars during startup	error
`SR#0510`	Bar code read is incomplete	BAR CODE SENSOR sensed at least 1 bar but not enough bars for a valid code	error
`SR#0511`	Bar code not 2-of-8 code	BARS were sensed and decoded but result was not a valid 2-of-8 code	error

Likely causes and actions for each code are in ServiceForge. Connect ServiceForge to your AI

Community

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.