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| Brother DCP6690CW Trouble Error Codes |
| Code | Description | Causes |
| 20, 21, 22, 23 | Cannot identify the ink cartridge loaded because the signal values detected by the corresponding ink empty sensor and ink cartridge detection sensor are different from the specified values. Ink cartridge not loaded correctly 20: Black ink 21: Yellow ink 22: Cyan ink 23: Magenta ink | -Ink cartridge loaded after the ink cartridge cover has been left open for 10 minutes or more -Ink cartridge replaced when the power is OFF -Ink cartridge loaded very quickly -Ink cartridge halfway taken in and out Ink cartridge partially broken The ink cartridge loaded is not the specified one Ink empty sensor defective Ink empty sensor PCB defective Main PCB defective |
| 26, 27, 28, 29 | Running out of ink. Running out of ink 26: Black ink 27: Yellow ink 28: Cyan ink 29: Magenta ink | Ink empty sensor PCB defective Main PCB defective |
| 2A, 2B, 2C, 2D | Cannot detect ink cartridges. Ink cartridge not loaded 2A: Black ink 2B: Yellow ink 2C: Cyan ink 2D: Magenta ink | Ink cartridge broken Ink cartridge detection sensor defective Ink cartridge detection sensor PCB defective Main PCB defective |
| 2F | Ink cartridge cover opened. | Ink cartridge cover sensor (carbon switch) defective Ink cartridge cover’s tab broken Ink cartridge cover sensor actuator unhooked Rubber keypad defective Control panel PCB defective Main PCB defective |
| 3E | Recording error related to ASF motor, paper feed motor, and carriage motor. | ASF encoder disk, PF encoder disk, or CR encoder strip stained or scratched ASF, PF, or CR encoder defective ASF, PF, or CR motor defective Main PCB defective |
| 3X (except 3E) | Head/carriage unit travel error. | Software malfunction Any obstacles on the travel path of the head/carriage unit CR timing belt come off CR encoder strip stained or scratched Carriage PCB defective Head/carriage unit broken Carriage motor defective Main PCB defective Power supply PCB defective Maintenance unit defective |
| 40 | The casing internal temperature thermistor has detected abnormal temperature in the machine. | Main PCB defective Casing internal temperature thermistor defective |
| 42 | The head drive voltage has not dropped from the high to low level within the specified period. | Piezoelectric ceramic actuator or head driver defective Carriage PCB defective Main PCB defective |
| 43 | The head thermistor has been opened or shorted abnormally. defective | Head flat cables not connected correctly Head flat cables broken Carriage PCB defective Main PCB |
| 44 | The temperature of the print head driver has risen abnormally. The head driver chip temperature sensor in the head driver detects abnormally high temperature | .Head property parameters incorrect in the EEPROM Air bubbles in the head/ carriage unit Head flat cables and carriage-head flat cable not connected correctly Head flat cables broken Carriage-head flat cable broken Head/carriage unit broken Main PCB defective |
| 46 | The number of performed purge sequences has reached the limit. The ink absorber box may be filled with drained ink. | Purge counter overflown. The number of flushing operations has reached the limit. The flushing box may be filled with drained ink. Flushing counter overflown |
| 48 | Weak connection of the head flat cables. | Head flat cables or carriage-head flat cable broken or not connected |
| 49 | The head drive voltage has not risen to the specified level. | Head flat cables and carriage-head flat cable not connected correctly Head/carriage unit defective Main PCB defective Power supply PCB defective |
| 4F | The head drive voltage has dropped from the high to low level in an abnormally short period. The head drive voltage has not risen to the specified level within the specified period in the self-diagnosis. | Piezoelectric ceramic actuator defective (Cracks or rare short) Main PCB defective |
| 50, 51 | The purge cam switch does not come ON or OFF even after the purge cam has been driven by the specified number of pulses | .Planetary arm assembly not engaged correctly Purge cam switch harness not connected correctly Purge cam switch broken Gear(s) on the maintenance unit broken Paper feed motor defective Power supply PCB defective Main PCB defective |
| Code | Description | Causes |
| 52 | The purge cam switch does not come ON at each detection point. | Planetary arm assembly not engaged correctly Purge cam switch harness not connected correctly Purge cam switch broken Gear(s) on the maintenance unit broken Abnormal load applied to the purge cam Paper feed motor broken Main PCB defective |
| 57 | The head/carriage unit does not return to the home position (capping position). Head cap unit, head wiper or other parts on the maintenance unit interfering with the head/carriage unit CR encoder strip stained Any obstacles on the travel path of the head/carriage unit Carriage | PCB ASSY defective Carriage motor defective Head/carriage unit defective Main PCB defective Power supply PCB defective |
| 5A, 5B | Abnormal stop of purge cam being driven Foreign materials in the machine PF encoder disk being in contact with the upper cover and deformed PF encoder | PCB defective Main drain tube bent Clutch gear broken Purge cam gear broken Abnormal load applied to the purge cam Planetary arm assembly broken Paper feed motor defective PF roller gear L broken Engine unit defective Main PCB defective Power supply PCB defective |
| 5D | Current protection for the driver IC activated when the purge cam was being driven. | The driving current has exceeded the limit due to an abnormal load applied to the maintenance unit. |
| 5E | Current protection for the driver IC activated when the pump was in operation. | The driving current has exceeded the limit due to an abnormal load applied to the maintenance unit. |
| 60, 61, 62 | Paper width sensor (media sensor) error. | Paper width sensor (media sensor) adjustment failure. Paper width sensor defective Head flat cables broken Main PCB defective |
| 6C | Current protection activated due to an overload applied to the paper feed motor. | Foreign materials in the paper path Paper feed motor defective Main PCB defective |
| 6F | ASF motor does not stop at the intended timing. | Malfunction caused by overload Relevant motor harness not connected correctly Carriage motor defective ASF encoder sensor defective ASF motor defective Main PCB defective |
| 70, 71 | Cannot detect the ON/ OFF state of cap lift cam switch. | Cap lift cam switch defective ASF encoder sensor defective ASF motor defective Main PCB defective |
| 72 | Cannot detect the origin of the cap lift cam. | Cap lift cam switch defective ASF encoder sensor defective ASF motor defective Main PCB defective |
| 73 | Fails to switch the cap lift cam positions. | Cap lift cam switch defective ASF encoder sensor defective ASF motor defective Main PCB defective |
| 7A | Abnormal stop of cap lift cam. | Foreign materials in the head capping mechanism ASF encoder sensor defective ASF motor defective Cap lift cam switch defective Main PCB defective |
| 7D | Current protection for the driver IC activated when the cap lift cam was being driven. | Foreign materials in the head capping mechanism. ASF encoder sensor defective ASF motor defective Cap lift cam switch defective Main PCB defective |
| 7E | No head parameters stored in the EEPROM. (This code may appear only in the maintenance mode.) | No head property data has been entered Main PCB defective |
| 80 | At the start of FAX message printing, the controller detects that paper is smaller than A4 size in width. | Paper smaller than the specified size loaded in the paper tray Paper width sensor (media sensor) not adjusted Paper width sensor defective Main PCB defective |
| Code | Description | Causes |
| 81 | In printing except FAX and list printing, the controller detects that paper is smaller than the specified size in width. | Paper smaller than the specified size loaded in the paper tray Paper width sensor not adjusted Paper width sensor defective Main PCB defective |
| 82 | Recording paper jam in paper pull-in operation. (Although the registration sensor detects the paper, the paper width sensor fails to detect the leading edge of paper.) | Foreign materials in the paper path Paper printed or paper with blackish leading edge fed Head flat cable connection failure Paper width sensor defective Main PCB defective |
| 83 | Recording paper jam. (The registration sensor detects paper abnormally early in paper feeding operation in the normal SF mode.) (The registration sensor sticks to ON in the high-speed feed mode.) | Paper double feeding caused by incorrect loading in the paper tray |
| 84 | Recording paper jam. (The registration sensor sticks to ON after completion of paper ejection operation.) | Foreign materials in the paper path Registration sensor actuator caught on the surrounding parts Registration sensor defective PF timing belt come off The paper ejection roller does not rotate correctly Main PCB defective |
| 88 | Recording paper jam. (Even after paper pulling-in operation, the registration sensor is still OFF.) | Jam clear cover not closed correctly Registration sensor harness not connected correctly Bank ASSY deformed Paper pull-in rollers defective Mode switching lever (at the right end of CR guide rail) not sliding smoothly At the ends of the paper feed roller shaft, any gear(s) damaged Paper feed motor defective Main PCB defective |
| 8A | The paper feed motor does not rotate. | Foreign materials in the machine Paper feed motor harness not connected correctly Abnormal load applied to the paper feed roller PF-related gear(s) broken PF encoder disk stained or scratched PF encoder sensor defective Paper feed motor defective Main PCB defective |
| 8B | The paper feed motor stops suddenly. | Abnormal load applied to the paper feed roller PF-related gear(s) broken PF encoder disk stained or scratched PF encoder sensor defective Paper feed motor defective Main PCB defective |
| 8C | Current protection for the driver IC activated in paper feeding operation. | The driving current has exceeded the limit due to an abnormal load applied to the PF-related gears and rollers. |
| 8D | The paper feed motor rotates in the reverse direction. | PF encoder disk stained or scratched PF encoder disk dislocated PF encoder sensor defective Paper feed motor defective Abnormal load applied to the paper feed roller Main PCB defective |
| 8F | The paper feed motor is being driven and cannot be stopped. | Software malfunction Paper feed motor harness not connected correctly |
| 90 | Recording paper width exceeding the letter size is detected by the paper width sensor (media sensor). | Wrong size paper loaded in the paper tray. Paper width sensor defective Main PCB defective |
| 91 | Recording paper length shorter than the specified size is detected by the registration sensor. | Wrong size paper loaded in the paper tray. Registration sensor defective Main PCB defective |
| A1 | Scanner cover (scanner unit) opened | Scanner cover sensor (carbon switch) broken Scanner cover sensor actuator unhooked Rubber keypad defective Control panel PCB defective Main PCB defective |
| A2 | During scanning or ejecting, a document of 90 cm or longer is detected. | Document jam Foreign materials in the machine Document rear sensor actuator caught on the surrounding parts Document rear sensor broken Document feed roller 2 defective or not rotating Main PCB defective |
| A3 | The document rear sensor does not come ON during document pull-in operation. | Document jam Foreign materials in the machine Document rear sensor actuator caught on the surrounding parts Document rear sensor broken ADF motor defective ADF-related gear(s) broken Main PCB defective |
| Code | Description | Causes |
| A5 | FAX scanning failure (1st time) | CIS defective White reference film stained in the scanner cover Main PCB defective |
| A6 | FAX scanning failure (retry) | CIS defective White reference film stained in the scanner cover Main PCB defective |
| A7 | Mismatch between the type of the CIS mounted and EEPROM data. | Scanner cover containing the improper CIS type mounted at repair. |
| A8 | Color parameter matching error. (Used for monitoring bugs at the factory.) | |
| AF | CIS positioning error. | CIS flat cable broken or not connected properly CIS motor harness not connected properly CIS motor defective CIS drive unit defective CIS defective Main PCB defective |
| BD | Black level data error. | CIS defective Main PCB defective |
| DF ... E0 | Modem error. | SDAA chip defective Main PCB defective |
| E2 | Wired LAN MAC address not registered | MAC address not registered correctly |
| E3 | Wireless LAN MAC address not registered. | MAC address not registered correctly |
| E4 | No recording paper fed. (No paper detected by the registration sensor.) | Paper tray not set in place Recording paper not loaded correctly No paper loaded in the paper tray. Jam clear cover not closed correctly Registration sensor harness connection failure Registration sensor defective Main PCB defective |
| E5 | Write error in EEPROM on the cordless PCB. | The base ID code and cordless handset ID code registered are mismatched. |
| E6 | Write error in EEPROM. | Main PCB defective |
| E7 | No communication between cordless PCB and cordless handset | The base ID code and cordless handset ID code registered are mismatched. |
| E8 | Data scanning error during transmission. | CIS defective Main PCB defective |
| EA | Document removed at phase B. | Document front sensor actuator caught on the surrounding parts Document front sensor defective Main PCB defective |
| Code | Description | Causes |
| EC | LCD connection detection failure. | LCD flat cable not connected correctly LCD unit defective Main PCB defective |
| ED | Touch panel initialization failure at the time of power ON. | Touch panel in contact with something during initialization at the time of power ON. Touch panel defective Touch panel PCB defective Main PCB defective |
| EE | Bluetooth PCB connection failure | Bluetooth PCB not connected correctly Bluetooth PCB defective |
| F7 | Media module detection failure. | Main PCB defective |
| F8 | Battery harness connection failure. (Available in the maintenance mode only) | Battery harness not connected correctly |
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