Mobile X-ray systems · DaRt family

Shimadzu MobileDaRt: troubleshooting and error codes

The ServiceForge knowledge base holds 85 documented symptoms for the Shimadzu MobileDaRt, with 117 ranked causes, 66 diagnostic checks with test points and expected values, and 61 error codes. Each symptom below shows its causes and the first check; the rest is one connection away. Connect ServiceForge to your AI

Symptoms

F14 - Abnormal tube voltage or X-ray tube discharge detected radiation

System detects discharge in high voltage system during X-ray tube operation; error may be transient or indicate actual discharge

Ranked causes

1. X-ray tube defective (occasional)
2. High voltage cable poorly contacted (common)
3. High voltage transformer defective (rare)
4. X CONT or NEXSC PCB defective (rare)

First check

Perform aging procedure

Expected: Error message eliminated after aging cycle

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

Capacitor discharging not possible caution

Capacitor charge cannot be dissipated through discharge resistors; LD1 indicator remains lit

Ranked causes

1. Cable CN1/CN2 not switched from CN2 to CN1 (common)
2. Discharge switch on CN5 not operated or defective (occasional)
3. Discharge resistors R3/R4 open or defective (rare)

First check

Verify CN1/CN2 cable position for discharge mode

Test point: CN1/CN2 cable connector
Expected: Cable connected to CN1 (discharge position), not CN2 (charging position)

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

Capacitor not reaching final charge voltage for exposure caution

Capacitor voltage does not reach approximately 200V; VCOK signal not generated; exposure cannot be initiated

Ranked causes

1. K2ON signal not received to switch resistor configuration from series to parallel (common)
2. Parallel resistor configuration not established (occasional)
3. A12B or M8B on MUX CHARGE-32K PCB not generating VCOK signal (rare)

First check

Verify K2ON signal when capacitor reaches 170V

Test point: JCAP pin 4
Expected: K2ON signal present when capacitor voltage = 170V

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

DR system does not power on

DR system power remains OFF; CXDI-50 and related equipment not receiving power when DR switch is pressed

Ranked causes

1. PC_PERMIT signal not available from XCONT-2008 (common)
2. Relay K1, K2, K3 not engaging on Power 200D PCB (occasional)
3. DC24V power supply from XCONT-2008 to JPWD not available (occasional)

First check

Verify DC24V supply from XCONT-2008

Test point: JPWD connector on Power 200D PCB
Expected: DC24V present, +/- 10%
Tools: Voltmeter

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

DR system power does not switch to AC mains when power plug connected

DR system remains powered by battery when power plug is connected; AC mains power not being used for DR supply; relay K22 does not engage

Ranked causes

1. LVON signal not sent from MUX POWER-32K/CHARGE-32K to Power 200D JPWD (common)
2. Relay K6 does not engage when LVON signal received (occasional)
3. Relay K22 on DR ASSY not engaging or defective (occasional)

First check

Connect power plug to mains AC

Test point: Power plug AC input
Expected: AC mains voltage applied to equipment

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

F21 - Measured tube current more than 100mA above preset radiation

Software detection during exposure; tube current excessive

Ranked causes

1. RMA or TMA adjustment abnormal (unknown)
2. TMA (tube current measurement) abnormal (unknown)
3. XCONT or NEXSC PCB defective (occasional)

First check

Check heating system per F31/F32 flowchart

Test point: Filament heating circuit
Expected: Normal filament heating

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

F31 - Measured filament current more than 50% above preset radiation

Software detection during preparation and ready-up showing filament overcurrent

Ranked causes

1. FVR or IFV measurement abnormal (unknown)
2. XCONT, inverter unit, or high voltage filament transformer defective (occasional)
3. Only IFV abnormal or high voltage filament transformer defective (occasional)

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

Power supply circuit fault high voltage

F03 error indicates -15V control circuit power supply is abnormal, detected by hardware

Ranked causes

1. X CONT or NEXSC PCB abnormal (occasional)
2. PS1 power supply output abnormal (occasional)
3. -15V shorted to GND on PCB (rare)

First check

Measure -15V at test point

Test point: CP on X CONT
Expected: Normal

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

X-ray tube voltage control fault high voltage

F11 through F16 error codes indicate X-ray tube high voltage generation or regulation failure

Ranked causes

1. KV overvoltage (30 kV above preset) (occasional)
2. KV undervoltage (15% below preset) (occasional)
3. No KV (voltage ~10 kV or less) (occasional)

First check

Measure tube voltage feedback

Test point: CP9 (TKV), CP12 (RKV), CP11 (TMA), CP13 (RMA) on X CONT
Expected: Within normal range

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

Battery charging not starting

Charging does not initiate when power plug is connected; green LED LD1 on MUX CHARGE-32K does not light

Ranked causes

1. CHON signal not available from XCONT PCB (common)
2. Key switch not in correct position (occasional)

First check

Verify CHON signal is available

Test point: XCONT PCB output
Expected: CHON signal present after 10 seconds with key switch OFF

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

Capacitor charging not progressing past initial voltage caution

Capacitor charged voltage does not reach approximately 170V within 30-60 seconds of charging initiation

Ranked causes

1. K1ON signal not received by MUX CAPACITOR PCB (common)
2. Series resistances R3/R4 open or defective (occasional)

First check

Verify K1ON signal presence

Test point: JCAP pin 5
Expected: K1ON signal present after 10 seconds from MGRS

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

DR system does not turn off when shutdown initiated

DR system remains powered after shutdown command; relays K1, K2, K3 do not deactivate; Power 200D PCB continues operating

Ranked causes

1. PC shutdown not sending DC5V disconnect signal (common)
2. Relays K1, K2, K3 stuck or coil open (occasional)

First check

Initiate DR SHUTDOWN and monitor PC power-down

Test point: USB port on Power 200D PCB (JUSB), PC DC5V output
Expected: DC5V from PC USB disappears within shutdown time

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

DR system incorrectly remains ON when key switch turned OFF

DR system continues operating after key switch set to OFF; power continues to DR ASSY even though key power has been removed

Ranked causes

1. Battery power still supplies M8 DC power supply via J240 connector (unknown)
2. USB power from PC keeps M6B and relays energized (occasional)

First check

Set key switch to OFF while DR system is ON

Test point: Key switch
Expected: Key switch in OFF position

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

DR system power does not disconnect when power plug removed

DR system remains on battery power after mains power disconnected; relay K22 does not deactivate; should immediately switch from AC back to battery

Ranked causes

1. LVON signal not cleared when power plug disconnected (common)
2. Relay K22 stuck or slow to release (occasional)

First check

Disconnect power plug from mains AC

Test point: Power plug disconnection
Expected: Mains AC power removed

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

Exposure cannot be initiated after VCOK signal patient safety

VCOK signal is generated but external relay K3 does not engage; exposure cannot proceed even though capacitor is charged

Ranked causes

1. K3ON signal not received from XCONT-2008 during READY operation (common)
2. Relay K4 or external relay K3 failed (occasional)

First check

Initiate READY operation and verify K3ON signal

Test point: JCAP connector
Expected: K3ON signal present when READY operation initiated

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

F22 - Measured tube current approximately 50% or less of preset radiation

Software detection during exposure; tube current too low

Ranked causes

1. RMA or TMA adjustment abnormal (unknown)
2. Only RMA abnormal (unknown)

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

F23 - Measured tube current 10mA or less radiation

Software detection showing no tube current or filament not lit

Ranked causes

1. X-ray tube filament not lit (common)
2. XCONT or NEX-SH PCB defective (occasional)

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

F32 - Measured filament current more than 50% below preset radiation

Software detection during preparation and ready-up showing filament undercurrent

Ranked causes

1. FVR or IFV measurement abnormal (unknown)
2. XCONT, inverter unit, or high voltage filament transformer defective (occasional)

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

F51 - Plus-side battery voltage above 155V during charging caution

Battery charging system fault; voltage too high

Ranked causes

1. Battery or MUX CHARGE-32K fault (unknown)
2. Full charge condition in adjustment mode (occasional)

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

F5E - Measured charging current more than 50% above spec for 10 seconds high voltage

Software detection of sustained high charging current

Ranked causes

1. Battery or MUX CHARGE-04B/32K fault (unknown)
2. Detection circuit fault on XCONT PCB (occasional)

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

Supply voltage out of range high voltage

F01 or F02 error code indicates AC mains input voltage abnormality detected by software

Ranked causes

1. Supply voltage high by approximately 20% or more (occasional)
2. Supply voltage low by approximately 30% or more (occasional)

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

X-ray tube assembly overtemperature caution

H4 alarm indicates X-ray tube assembly temperature exceeds safe operating limit

Ranked causes

1. Thermal switch activated due to excessive temperature (common)
2. DC24V power supply unavailable (occasional)

First check

Verify X-ray tube temperature condition

Test point: Thermal switch and tube assembly
Expected: Not overheated; switch not activated

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

Abnormal DR system operation

System reports F68 or F76 error code indicating digital radiography system malfunction

Ranked causes

1. DR system hardware or control fault (unknown)

Abnormal input signal from Hand SW

System reports F64 or F65 error code indicating hand switch signal fault

Ranked causes

1. Hand switch signal circuit fault (unknown)

Anode heat at tolerance limit caution

H2 alarm indicates X-ray tube anode accumulated heat has reached maximum tolerance threshold

Ranked causes

1. Anode thermal capacity reached limit (common)

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

Anode heat over tolerance caution

H1 alarm indicates X-ray tube anode accumulated heat exceeds tolerance with current exposure settings

Ranked causes

1. Exposure parameters too high for thermal capacity (common)

First check

Monitor accumulated heat capacity

Test point: CPU heat calculation based on exposure history
Expected: Heat level below tolerance

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

Battery charging control fault caution

F51 through F5F error codes indicate main battery charging circuit failure

Ranked causes

1. Battery charging circuit malfunction (unknown)

Bucky unit operation abnormality

F62 error code indicates grid-controlled fluoroscopy unit (Bucky) malfunction

Ranked causes

1. Bucky unit control or mechanical fault (unknown)

Calibration: BIOS settings after CMOS battery replacement

After replacing CMOS backup battery, default BIOS settings are loaded. System requires verification and adjustment of critical settings, particularly SDRAM CAS Latency Time for Pentium processor compatibility.

Ranked causes

1. Default BIOS settings loaded after battery replacement (common)

First check

Set SDRAM CAS Latency Time

Test point: Advanced Chipset Features menu
Expected: [3]

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

Charging current exceeds safe level caution

System detects excessive charging current and halts charging; error message F5a displayed

Ranked causes

1. Measured charging current exceeds 3.2A (rare)

First check

Measure actual charging current

Test point: Current transformer CT1 output (CP9)
Expected: Less than 3.2A
Tools: Ammeter or current probe

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

CPU memory backup battery expired

EEE alarm indicates lithium battery for SRAM backup has completely expired; APR, X-ray conditions and error log may be erased

Ranked causes

1. Lithium battery end-of-life reached (common)

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

CPU memory backup battery needs replacement

E alarm indicates lithium battery for SRAM backup on NEX-SH PCB approaching end of life

Ranked causes

1. Lithium battery life expiring (common)

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

D0 - Encoder feedback without operation handle input patient safety

Motor encoder signal detected while operator is not requesting movement

Ranked causes

1. Motor encoder circuit fault or false feedback (unknown)

D1 - DC motor overcurrent detected caution

Motor current exceeds threshold; low-speed >6A for 10sec or high-speed >8A for 10sec

Ranked causes

1. Left or right DC motor defective (occasional)

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

D10 - Arm lock release switch ON at power on caution

Arm lock switch in unexpected state during power-up

Ranked causes

1. Arm lock switch or connection fault (common)

D11 - Arm lock release lever ON at power on caution

Arm lock lever in unexpected state during power-up

Ranked causes

1. Arm lock lever or connection fault (common)

D12 - FET thermal sensor tripped on MU DRIVER 07 PCB caution

Motor driver FET overtemperature; open circuit condition; requires power cycle to reset

Ranked causes

1. Motor driver overheating or fan fault (occasional)

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

D13 - FET abnormality detected on MU DRIVER 07 PCB caution

Motor driver FET in open or short condition; power stage fault

Ranked causes

1. FET in open or short condition (occasional)

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

D2 - Motor current not detected despite operation input caution

Operator requesting movement but no motor current feedback; power or connection fault

Ranked causes

1. Power cable disconnected between motor and MU DRIVER PCB (common)

D3 - Abnormal DC motor encoder signal caution

Encoder waveform or signal loss detected from motor feedback

Ranked causes

1. DC motor encoder defective (occasional)

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

D4 - Brake release switch ON at power on caution

Switch unexpected state during power-up; may indicate stuck switch

Ranked causes

1. Brake release switch stuck or shorted (common)

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

D5 - Small movement forward switch ON at power on caution

Switch unexpected state during power-up

Ranked causes

1. Switch or connection fault (common)

D6 - Small movement backward switch ON at power on caution

Switch unexpected state during power-up

Ranked causes

1. Switch or connection fault (common)

D7 - Left drive handle (FSR) ON at power on caution

Drive handle in unexpected state during power-up

Ranked causes

1. Drive handle or connection fault (common)

D8 - Right drive handle (FSR) ON at power on caution

Drive handle in unexpected state during power-up

Ranked causes

1. Drive handle or connection fault (common)

D9 - Bumper switch ON at power on caution

Bumper sensor in unexpected state during power-up

Ranked causes

1. Bumper switch or connection fault (common)

DC motor abnormality

d0 through d3 and d12 through d15 alarms indicate failure or malfunction of DC motor control circuits

Ranked causes

1. DC motor control circuit fault (unknown)

Emergency brake release battery needs replacement patient safety

E5 alarm indicates battery for emergency break release mechanism is low and requires replacement

Ranked causes

1. Emergency brake release battery depleted (common)

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

EMG switch signal detected patient safety

System reports F6d indicating emergency stop signal input

Ranked causes

1. Emergency stop switch activated (unknown)

F15 - Measured tube voltage below preset by more than 10% radiation

Software detection during and after X-ray exposure showing kV deficit; X-ray continues despite error

Ranked causes

1. KV adjustment or feedback circuit fault (unknown)

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

F16 - KV feedback start signal not detected during exposure radiation

Software detection that FBST signal missing after exposure starts; X-ray continues, F15 displayed after exposure ends

Ranked causes

1. KV feedback circuit fault (unknown)

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

F1A - KV ADJ PCB not detected patient safety

Confirmation signal *KV ADJ CON absent; X-ray exposure prohibited

Ranked causes

1. KV ADJ PCB not mounted or loose (common)

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

F1B - Wrong KV ADJ PCB type mounted patient safety

Signal *COCK type mismatch with unit output power; X-ray exposure prohibited

Ranked causes

1. Incorrect KV ADJ PCB model installed (common)

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

F33 - Measured filament current 1A or less radiation

Software detection showing filament current critically low

Ranked causes

1. X-ray tube filament defective or XCONT/NEX-SH fault (unknown)

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

F41 - Capacitor charge voltage exceeds 300V high voltage

32kW type only; abnormal high capacitor voltage detected

Ranked causes

1. Capacitor charging circuit fault (unknown)

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

F42 - Capacitor voltage below 170V after 60 seconds charging high voltage

32kW type only; slow or failed charging to operational level

Ranked causes

1. Charging circuit fault or capacitor defective (unknown)

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

F43 - Capacitor voltage below 30V after 10 seconds charging high voltage

32kW type only; charging not starting properly

Ranked causes

1. Charging circuit fault (unknown)

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

F44 - VCOK signal not available despite normal capacitor charging high voltage

32kW type only; charge detection signal missing

Ranked causes

1. Voltage detection circuit fault on MUX CHARGE-32K or signal path (unknown)

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

F45 - Machine not in Stand-by within 30 seconds after relay K2 on MUX CAPACITOR PCB turns on high voltage

32kW type only; final charging stage timeout

Ranked causes

1. Voltage reaching standby level delayed or circuit fault (unknown)

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

F46 - Capacitor voltage drops below Stand-by level for more than 30 seconds after Stand-by high voltage

32kW type only; capacitor voltage discharge or leakage in standby

Ranked causes

1. Capacitor leakage or charging circuit holding fault (unknown)

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

More symptoms

F52 - Plus-side battery voltage below 50V during charging
F53 - Minus-side battery voltage above 155V during charging
F54 - Minus-side battery voltage below 50V during charging
F55 - Plus-side battery 12V or more higher than minus-side
F56 - Minus-side battery 12V or more higher than plus-side
F5a - Battery charging current exceeds 3.2A (hardware detection)
F5b - Plus or minus-side battery voltage exceeds 155V (hardware detection)
F5c - Power plug connected with main breaker OFF
F5F - Measured charging current less than 30% of spec for 10 seconds
F61 - Starter error; no STOK signal
F62 - XOK signal not received within 1 second after HX1
F6d - Emergency status detected
F6E - Exposure did not terminate by backup time
F6F - Exposure control circuit abnormal; KVT not received
Filament heating control fault
Heat capacity warning with low exposure history
Irradiation control or photo timer fault
KVADJ PCB not attached correctly
Main battery voltage low
Main capacitor charging control fault
Mechanical parts abnormality
Starter fault
Study information incorrectly filed in PACS
System does not boot, displays CMOS checksum error
X-ray tube current control fault

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

Error codes

Code	Meaning	Trigger	Severity
`01`	Short circuit of FET for driving the left DC motor	FET failure or electrical short in left motor drive circuit	error
`02`	Short circuit of FET for driving the right DC motor	FET failure or electrical short in right motor drive circuit	error
`08`	Abnormal condition of FET	FET operating outside normal parameters	warning
`10`	FET Thermal switches are ON	FET junction temperature exceeds thermal switch threshold	warning
`20`	Dry cell battery error	Battery voltage out of tolerance or battery missing	error
`30`	Melted contact of K11	Electromagnetic lock relay contact degradation or failure	critical
`40`	Communication error with XCONT	Serial or parallel communication link between MU DRIVER-07 and XCONT PCB fails	error
`bbb`	Main battery voltage dropped	Main battery voltage falls below minimum operating threshold	warning
`d0`	Abnormality regarding DC motors	DC motor control circuit detects fault	error
`d1`	Abnormality regarding DC motors	DC motor control circuit detects fault	error
`d10`	Abnormality regarding other mechanical parts	Mechanical component control circuit detects fault	error
`d11`	Abnormality regarding other mechanical parts	Mechanical component control circuit detects fault	error
`d12`	Abnormality regarding DC motors	DC motor control circuit detects fault	error
`d13`	Abnormality regarding DC motors	DC motor control circuit detects fault	error
`d14`	Abnormality regarding DC motors	DC motor control circuit detects fault	error
`d15`	Abnormality regarding DC motors	DC motor control circuit detects fault	error
`d2`	Abnormality regarding DC motors	DC motor control circuit detects fault	error
`d3`	Abnormality regarding DC motors	DC motor control circuit detects fault	error
`d4`	Abnormality regarding other mechanical parts	Mechanical component control circuit detects fault	error
`d5`	Abnormality regarding other mechanical parts	Mechanical component control circuit detects fault	error
`d6`	Abnormality regarding other mechanical parts	Mechanical component control circuit detects fault	error
`d7`	Abnormality regarding other mechanical parts	Mechanical component control circuit detects fault	error
`d8`	Abnormality regarding other mechanical parts	Mechanical component control circuit detects fault	error
`d9`	Abnormality regarding other mechanical parts	Mechanical component control circuit detects fault	error
`E`	CPU memory backup battery needs replacement	Lithium battery voltage drops below safe threshold	warning
`E5`	Emergency brake release battery needs replacement	Emergency brake release battery voltage depletes	warning
`EEE`	CPU memory backup battery expired	Lithium battery end-of-life reached	error
`F01`	Supply voltage higher by approximately 20% or more than normal	AC mains input voltage exceeds nominal by ~20%	error
`F02`	Supply voltage lower by approximately 30% or more than normal	AC mains input voltage falls below nominal by ~30%	error
`F03`	Power supply circuit fault; -15V abnormal	Hardware watchdog detects -15V supply out of tolerance	critical
`F11`	KV OVER: tube voltage >30 kV above preset	Measured tube voltage exceeds preset by ~30 kV or more	error
`F12`	KV UNDER: tube voltage >15% below preset	Measured tube voltage falls >15% below preset; detects glow discharge	error
`F13`	NO KV: tube voltage approximately 10 kV or less	Measured tube voltage drops to ~10 kV or below during exposure	critical
`F1a`	KVADJ PCB not attached correctly	KVADJ PCB mounting or connection fault detected	error
`F1b`	KVADJ PCB not attached correctly	KVADJ PCB mounting or connection fault detected	error
`F21`	X-ray tube current (mA) control fault	Tube current regulation circuit detects fault	error
`F22`	X-ray tube current (mA) control fault	Tube current regulation circuit detects fault	error
`F23`	X-ray tube current (mA) control fault	Tube current regulation circuit detects fault	error
`F31`	Filament heating control fault	Filament heating circuit detects fault condition	error
`F32`	Filament heating control fault	Filament heating circuit detects fault condition	error
`F33`	Filament heating control fault	Filament heating circuit detects fault condition	error
`F41`	Main capacitor charging control fault	High voltage capacitor charging circuit detects fault	error
`F42`	Main capacitor charging control fault	High voltage capacitor charging circuit detects fault	error
`F43`	Main capacitor charging control fault	High voltage capacitor charging circuit detects fault	error
`F44`	Main capacitor charging control fault	High voltage capacitor charging circuit detects fault	error
`F45`	Main capacitor charging control fault	High voltage capacitor charging circuit detects fault	error
`F46`	Main capacitor charging control fault	High voltage capacitor charging circuit detects fault	error
`F51`	Battery charging control fault	Main battery charging circuit detects fault	warning
`F5F`	Battery charging control fault	Main battery charging circuit detects fault	warning
`F61`	Starter motor fault	Starter motor or control circuit detects fault	error
`F62`	Bucky unit operation abnormality	Bucky (grid-controlled fluoroscopy) unit control detects fault	error
`F64`	Abnormal input signal from Hand SW	Hand switch signal circuit detects fault condition	warning
`F65`	Abnormal input signal from Hand SW	Hand switch signal circuit detects fault condition	warning
`F68`	Abnormal operation regarding DR system	Digital radiography system control circuit detects fault	error
`F6d`	Input of EMG SW signal	Emergency stop switch signal detected	critical
`F6E`	Irradiation control or photo timer fault	Exposure timing or photo timer circuit detects fault	critical
`F6F`	Irradiation control or photo timer fault	Exposure timing or photo timer circuit detects fault	critical
`F76`	Abnormal operation regarding DR system	Digital radiography system control circuit detects fault	error
`H1`	Anode heat accumulated over tolerance	CPU heat calculation exceeds tolerance threshold	warning
`H2`	Anode heat at tolerance limit	CPU heat calculation reaches maximum tolerance	critical
`H4`	X-ray tube assembly temperature too high	Thermal switch activated or DC24V power loss to thermal circuit	critical

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.