Code :

Code: C8E0
Description: RADF communication protocol abnormality
Causes: RADF
Remedy: Turn the power OFF and then back ON to check if the equipment operates normally.

Code: C911
Description: The toner IC chip access is abnormal.
Causes: Toner cartridge CTIF board LGC board Harness
Remedy: 1. Toner cartridge 1. Check if the recommended toner cartridge is used. 2. Check if the CTRG board is installed properly. 3. Wipe the contact point with a soft cloth if it's stained. 4. Avoid touching the contact point. 2. CTIF board 1. Check if the contact-point spring is deformed. 2. Check if the contact-point spring is returned to its original position when it is pushed. 3. Check if the CTIF board is installed properly. 3. LGC board 1. Check if there is no abnormality on the LGC board. 2. Check if the conductor pattern on the LGC board is open or short circuited. 3. Check if the connector CN325 is disconnected. 4. Harness 1. Check the harness connecting the LGC board and the CTIF board. 2. Check the connectors (CN325 at the LGC board and CN231 at the CTIF board).

Code: C940
Description: Engine-CPU abnormality
Causes: LGC board
Remedy: Main power switch Turn OFF the main power switch, then back ON. Engine-CPU and FROM Check if the conductor pattern between the Engine-CPU and FROM is short circuited or open circuited. LGC board Board check

Code: C970
Description: High-voltage transformer abnormality
Causes:
Remedy: High-voltage section 1. Is the main charger installed securely? 2. Check if the spring of high-voltage supply contact point is deformed. 3. Check if the needle electrode is broken or the main charger grid is deformed. 4. Check if any foreign matters is on the needle electrode or the main charger grid. 5. Check if the transfer roller and the separation needle are installed securely. 6. Check if the transfer roller or the separation needle is removed. 7. Check if there is any foreign matter attached on the transfer roller or the separation needle.

Code: CA10
Description: Polygonal motor is abnormal
Causes: LGC board Laser optical unit
Remedy: 1 Is the polygonal motor rotating? (Perform the input check: FS-03- [ALL]OFF/[5]/[B]) Yes 1. Check if the conductor pattern on the LGC board is short circuited or open circuited. 2. Replace the LGC board. No 1. Check if the connector of the harness is disconnected between LGC board (CN306) and the laser optical unit. Reconnect it securely if so. Even if the connector is not apparently disconnected, it may be connected loosely. Therefore check carefully that it is secure. 2. Check if the harness is open circuited and the connector pin is disconnected. 3. Check if the conductor pattern on the LGC board is short circuited or open circuited. 4. Replace the laser optical unit. 5. Replace the LGC board.

Code: CA20
Description: Laser optical unit related service call. H-Sync detection error
Causes: LGC board Laser optical unit
Remedy: 1 Are the harness open circuited and the connectors disconnected between the LGC board (CN304) and the laser optical unit? Yes 1. Even if the connector is not apparently disconnected, it may be connected loosely. Therefore check carefully that it is secure. No 1. Replace the LGC board. 2. Replace the laser optical unit

Code: CB00, CB01
Description: [CB00] Finisher not connected [CB01] Finisher communication error
Causes: Finisher control PC board (FIN) LGC board (LGC)
Remedy: Finisher • Check if the harness connecting the equipment and the finisher control PC board is disconnected or open circuited. • Check if the conductor pattern on the finisher control PC board is open circuited or short circuited. • Update the finisher firmware. • Replace the finisher control PC board. LGC board • Check if the harness connecting the finisher and the LGC board on the equipment is disconnected or open circuited. • Connector check (CN314) • Check if the conductor pattern on the LGC board is open circuited or short circuited. • Replace the LGC board.

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