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Troubleshooting

1. or the lock signal is not detected for more than 7 consecutive checks during rotation after the last signal Tray 2 lift motor malfunction Optional paper tray units The paper lift sensor fails Paper lift sensor defective to activate twice Tray lift motor defective continuously after the tray Too much load on the drive lift motor has been on for mechanism 18 seconds Poor tray lift motor connection Tray 3 lift motor malfunction optional paper tray units The paper lift sensor fails Paper lift sensor defective c to activate twice Tray lift motor defective continuously after the tray Too much load on the drive lift motor has been on for mechanism High voltage supply board defective Poor connection of the PCU Transfer separation unit set incorrectly Transfer roller damaged Too much load on the drive mechanism Main motor defective 18 seconds a Poor tray lift motor connection Tray 4 lift motor malfunction optional two tray paper tray unit The paper lift sensor fails Paper lift sensor defective to activate twice Tray lift motor defective continuously after the tray Too much load on the drive lift motor has been on for mechanism 18 seconds a Poor tray lift motor connection Paper feed motor lock optional paper tray units A motor lock signal is not detected for more than Paper feed motor defective 1 5 s or the lock signal is Too much load on the drive not detected for more mechanism than
2. defined under any SC code The application selected by a key press on operation panel does not start or ends abnormally Application start error After power on the application does not start within 60 s All applications neither start nor end normally The download program print data language data from the IC card does not execute normally 18 Jan 06 No does not appear on the panel and is only logged Software defective An error undetectable by any other SC code occurred Download the firmware for the application that failed An option required by the application RAM board is not installed Download controller firmware Replace the controller board An option required by the application RAM board is not installed Board installed incorrectly BICU board defective Controller board defective IC card defective NVRAM defective Loss of power during downloading Important Notes About SC999 Primarily intended for operating in the download mode logging is not performed with SC999 If the machine loses power while downloading or if for some other reason the download does not end normally this could damage the controller board or the PCB targeted for the download and prevent subsequent downloading If this problem occurs the damaged PCB must be replaced 127
3. interface error Defective controller detected Electrical total counter error The electrical total counter does not work properly Mechanical total counter Replace the optional memory board Controller board defective Replace the controller board NVRAM on the GDI controller board defective Mechanical total counter defective BICU defective Disconnected mechanical total counter Engine total counter error The checksum of the total NYRAM on the BICU defective counter is not correct Printer error A fatal error is detected in Printer application program defective the printer application Hardware configuration incorrect ae e including memory shortage pes Printer font error CSs error co fe font files are Font file not installed not found Memory error The machine detects a Memory defective discrepancy in the BICU defective write read data during its Poor connection between BICU and 125 B245 B276 B277 B268 B269 Service Manual 18 Jan 06 No Definition Symptom Possible Cause write read test done at memory power off on and at recovery from low power lor night off mode The printer status does not become ready when the printer application Application program defective program is necessary for image processing Image transfer error The controller is not able to transfer images when Application program defective the engine needs them Status error laser o
4. 1 0 s during rotation Fusing thermistor open center The fusing temperature detected by the thermistor is below 71C and is not corrected after the main power switch is turned on Fusing temperature warm up error center The fusing temperature Fusing thermistor defective or out of rises less than 7 degrees position in 2 seconds and this Fusing lamp open 120 Fusing thermistor defective or out of position Power supply board defective Loose connectors i B245 B276 B277 B268 B269 Service Manual 18 Jan 06 No continues 5 times Power supply board defective consecutively The fusing temperature is not detected in 25 or 35 Seconds Fusing overheat error center The fusing temperature is lover 230C for 1 second Fusing thermistor defective detected by the Power supply board defective thermistor Fusing overheat error center 2 The fusing temperature is over 250C for 1 second detected by the fusing temperature monitor circuit Fusing lamp overheat error center After the fusing temperature reaches the target temperature the fusing lamp does not turn off for 12 consecutive seconds Unstable fusing temperature center A Ula a P A Thermistor defective or out of 1 second and this occurs pornon y gt consecutive times Power supply unit defective Fusing thermistor defective Power supply board defective Fusing thermistor defective or out of position Power supply bo
5. B245 B276 B277 B268 B269 Service Manual 18 Jan 06 Troubleshooting Service Call Conditions Summary There are four levels of service call conditions Level C Ceffinition Cd CCR Procedure To prevent damage to the machine the main machine cannot be operated until the SC has been reset by a service representative see the note below Enter SP mode and then turn the main power switch off and on If the SC was caused by incorrect sensor e eteen the SC can be reset by turning the Ma o i power switchvatt i i and on main power switch off and on excluding the unit related to the service call and on D REIRA Tre r E a operated as usual Only the SC history is updated NPS Note If the problem concerns electrical circuit boards first disconnect then reconnect the connectors before replacing the PCBs If the problem concerns a motor lock first check the mechanical load before replacing motors or sensors SC Code Descriptions Symptom Possible Cause Exposure lamp defective Exposure lamp stabilizer defective Exposure lamp connector defective The standard white level Dirty scanner mirror or scanner was not detected properly mirror out of position when scanning the white SBU board defective plate SBU connector defective Lens block out of position Incorrect position or width of white plate scanning iii p 141 Scanner home position error 1 The scanner home Scanner home position sensor posi
6. ard defective Zero cross signals are not detected within 5 seconds after the main power switch is turned on or are not detected within 1 second after operation begins Fusing thermistor open rear The fusing temperature detected by the thermistor is below 71C and is not corrected after the main power switch is turned on Power supply board defective BICU defective Fusing thermistor defective or out of position Power supply board defective Loose connectors The fusing temperature rises less than 7 degrees in 2 seconds and this Fusing thermistor defective or out of continues 5 times position consecutively Fusing lamp open The fusing temperature is Power supply board defective not detected in 25 or 35 seconds 121 B245 B276 B277 B268 B269 Service Manual 18 Jan 06 No Fusing overheat error rear The fusing temperature is over 230C for 1 second Fusing thermistor defective Power supply board defective rear temperature reaches the target temperature the Fusing thermistor defective or out of position Power supply board defective The fusing temperature varies 50C or more within 1 second and this occurs 2 consecutive times Thermistor defective or out of position Power supply unit defective the duplex sensor reasons detect a paper jam 3 Dampness times in Succession Paper curl This condition can Incorrect paper setting in the paper occur when SP 1159 tray 1 is set to on T
7. defective Controller board defective Software malfunction download controller firmware again access the watchdog register within a certain Kernel mismatch error Software bug Download controller firmware again Self Diagnostic Error CPU The central processing unit returned an error Controller board defective Download controller firmware again error during the self diagnostic test because the ASIC and CPU timer Controller board defective interrupts were compared and determined to be out Network interface board defective Controller board defective Replace the NVRAM on the controller board Replace the controller board Self diagnostic Error NVRAM Optional NVRAM 826 The NVRAM or optional Replace the NVRAM on the NVRAM returned an error controller board 124 B245 B276 B277 B268 B269 Service Manual 18 Jan 06 No during the self diagnostic test Self diagnostic Error RAM The resident RAM returned a verify error during the self diagnostic Download controller firmware again Controller board defective Download controller firmware again Self diagnostic Error Optional RAM The optional RAM returned an error during the self diagnostic test Self diagnostic Error Clock Generator A verify error occurred when setting data was read from the clock generator via the I2C bus Network I F Abnormal NIB interface error NIB defective Controller board defective USB I F Error USB
8. he Stripper pawls coming apart default is off Left exhaust fan motor error The CPU detects an Loose connection of the exhaust fan exhaust fan lock signal for motor more than 5 seconds Too much load on the motor drive Rear exhaust fan motor error The CPU detects an Loose connection of the exhaust fan exhaust fan lock signal for motor more than 5 seconds Too much load on the motor drive The BICU does not receive a response from the ADF main board for 4 seconds or more The BICU receives a Poor connection between the BICU and ADF main board DF connector ADF main board defective BICU defective ADF incorrect The ADF for BO039 B040 B043 or detected for Basic and B121 B122 B123 is installed on a GDI machines B245 B268 B269 B276 B277 An ADF including the The connector of the ADF is correct ADF is installed removed while the machine is in the While the copier is in the energy saver mode 122 B245 B276 B277 B268 B269 Service Manual 18 Jan 06 oe machine only An error is detected during the communication Accounting device defective with the MF accounting Loose connection device Accounting error 2 After communication is established with the MF Accounting device defective accounting device a Loose connection brake signal is issued Accounting RAM error An error is detected in the RAM that saves the information on the MF Accounting device defective accounting Accounti
9. ng battery error An error is detected in the battery that is in the MF Accounting device defective accounting device Engine start error The engine ready signal is not issued within 70 seconds after the switch Engine board defective Controller defective Loose connection Communication error between the printer part of the controller board The connector is abnormal between the controller board and the BICU board The connector is abnormal between between the scanner part the controller board and the BICU of the controller board board anc BICU f ADF main board defective Me ADF Gate Sonane Input output board defective between the ADF main f board and the BICU is Poor connection ADF Gate line between the ADF main board and disconnected the BICU The FGATE signal is not issued from the ADF ADF connector defective within 30 seconds after SBU board defective the ADF starts feeding ADF gate abnormal 3 The FGATE signal is not ADF connector defective terminated by the ADF SBU board defective 123 B245 B276 B277 B268 B269 Service Manual 18 Jan 06 kerenld the ADF starts feeding Video transfer to the engine is started but the engine did not issue a video transmission end command within the specified time A video transmission was requested from the scanner but the scanner did not issue a video Controller board defective transmission end command within the Controller board
10. ptics housing unit The optics housing unit does not become ready within 17 seconds after the request NVRAM error The machine detects a NVRAM defective discrepancy in the j NVRAM write read data aad between BICU and when attempting to save actual data to the NVRAM NVRAM is not connected d BICU defective i e during actual use The localization settings First machine start after the NVRAM in the nonvolatile ROM is replaced and RAM are different Incorrect localization setting iF 0 146 NVRAM defective Controller defective Print images are not BICU board defective transferred Poor connection between controller and BICU oftware performance error Software defective Internal parameter incorrect Insufficient working memory When this SC occurs the file name The software attempted to address and data will be stored in perform an unexpected NVRAM This information can be operation checked by using SP 7403 Note the above data and the situation in which this SC occurs Then report the data and conditions to your technical control center Software defective Software continuity error The software attempted toj No operation required This SC code 126 B245 B276 B277 B268 B269 Service Manual perform an unexpected operation However unlike SC990 the object of the error is continuity of the software Unexpected Software Error Software encountered an unexpected operation not
11. r defective Poor connection between the polygonal mirror motor driver and the BICU board Damaged cable between BICU and polygonal mirror motor driver BICU board defective BICU board defective The fax controller or printer controller has a poor connection Fax controller or printer controller defective Poor connection between the LD unit and the BICU board Damaged cable between BICU and LD unit LD unit out of position LD unit defective BICU board defective TD sensor abnormal Poor connection of the PCU Poor connection of the PCU High voltage supply board defective TD sensor initial TD sensor initial setting error 22 error ID sensor defective No developer Drum does not turn Development roller does not turn Poor connection of the PCU The voltage is not applied to charge roller High voltage supply board defective Poor connection of the PCU Transfer separation unit set incorrectly A current leak signal for the transfer roller is 401 detected A current feedback signal f for the transfer roller is Transfer toll r damag d not detected g 402 B Transfer roller leak error 2 119 B245 B276 B277 B268 B269 Service Manual 18 Jan 06 No A current leak signal for the transfer roller is detected A current feedback signal for the transfer roller is not detected A main motor lock signal is not detected for more than 7 consecutive checks 700 ms after the main motor starts to rotate
12. t transferred to the BICU board defective controller memory within Controller board defective 1 minute Memory address error The BICU board does not The firmware programs of the engine receive memory and the controller do not match addresses from the BICU board defective controller board Controller board defective Charge roller current leak A current leak signal for Charge roller damaged the charge roller is High voltage supply board defective 118 B245 B276 B277 B268 B269 Service Manual fe Symptom O detected The polygon mirror motor does not reach operating speed within 10 seconds after the motor ON signal is sent or does not turn on within one of the 200 ms check intervals during ao arnee oA The No laser wring signa EAN See oou sonar F GATE fails to turn Low after the laser crosses 5 mm on the drum surface from the laser writing start San BI Ease seoza etter a evs Ll main scan synchronization detector board cannot detect the laser synchronization signal for more than 5 consecutive 100 ms intervals TD sensor error The TD sensor outputs less than 0 2 V or more than 4 0 V 10 times consecutively during copying Development bias leak A PERO bias leak poral gh alge stor defecte is detected l TD sensor initial setting is not performed correctly 18 Jan 06 Possible Cause Poor connection of the PCU Polygonal mirror motor error Polygon mirror moto
13. tion sensor does not defective detect the off condition Scanner drive motor defective 117 B245 B276 B277 B268 B269 Service Manual 18 Jan 06 No during initialization or Scanner home position sensor copying connector defective Scanner drive motor connector defective BICU board defective Scanner home position sensor defective Scanner drive motor defective Scanner home position sensor connector defective Scanner drive motor connector defective BICU board defective The automatic SBU adjustment has failed to Exposure lamp defective correct the black level Dirty white plate The automatic SBU Incorrect position or width of white adjustment has failed to plate scanning F p 141 correct the white level BICU board defective twenty times SBU board defective consecutively ass Error between BICU and SBU The scanner home position sensor does not detect the on condition during initialization or copying The flat cable between the BICU board and the SBU has a poor The BICU board cannot connection detect the SBU connect The flat cable between the BICU signal board and the SBU is damaged BICU board defective SBU defective Exposure lamp defective adjustment the machine Dirty white plate detects that the white Incorrect position or width of white level read from the white plate scanning iF p 141 plate or paper is out of BICU board defective range i SBU board defective Image transfer error Scanned images are no

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