SC600 (Engine: Communication and Others)

SC No.	Type	Error Name/Error Condition/Major Cause/Solution
SC622-01	D	Paper Feed Unit Communication Error (Tray 2)
		A communication error is detected from the paper feed unit 2, 10 times consecutively.
		The paper feed tray is not properly installed. The connector is not connected properly or, the wire or drawer connector is faulty. The firmware is not the latest version. The PF main PCB is faulty. The engine relay PCB (PCB21) is faulty.
		Reinstall the paper feed tray. Check the following wire connection, and correct the terminals and reconnect the connectors all the way. If the wire has no continuity or the drawer connector is faulty, replace them. PF lift sensor - PF main PCB PF lift motor - PF main PCB PF main PCB - Drawer connector Drawer connector - engine relay PCB (PCB21) Upgrade the firmware to the latest version. Replace the PF main PCB. Replace the engine relay PCB (PCB21).

SC No.	Type	Error Name/Error Condition/Major Cause/Solution
SC622-02	D	Paper Feed Unit Communication Error (Tray 3)
		A communication error is detected from the paper feed unit 3, 10 times consecutively.
		The paper feed tray is not properly installed. The connector is not connected properly or, the wire or drawer connector is faulty. The firmware is not the latest version. The PF main PCB is faulty. The engine relay PCB (PCB21) is faulty.
		Reinstall the paper feed tray. Check the following wire connection, and correct the terminals and reconnect the connectors all the way. If the wire has no continuity or the drawer connector is faulty, replace them. PF lift sensor - PF main PCB PF lift motor - PF main PCB PF main PCB - Drawer connector Drawer connector - PF main PCB (Tray 2) Upgrade the firmware to the latest version. Replace the PF main PCB. Replace the engine relay PCB (PCB21).

SC No.	Type	Error Name/Error Condition/Major Cause/Solution
SC622-03	D	Paper Feed Unit Communication Error (Tray 4)
		A communication error is detected from the paper feed unit 4, 10 times consecutively.
		The paper feed tray is not properly installed. The connector is not connected properly or, the wire or drawer connector is faulty. The firmware is not the latest version. The PF main PCB is faulty. The engine relay PCB (PCB21) is faulty.
		Reinstall the paper feed tray. Check the following wire connection, and correct the terminals and reconnect the connectors all the way. If the wire has no continuity or the drawer connector is faulty, replace them. PF lift sensor - PF main PCB PF lift motor - PF main PCB PF main PCB - Drawer connector Drawer connector - PF main PCB (Tray 3) Upgrade the firmware to the latest version. Replace the PF main PCB. Replace the engine relay PCB (PCB21).

SC No.	Type	Error Name/Error Condition/Major Cause/Solution
SC665-02	D	Communication error between the main/engine PCB (PCB1) and ASIC
		The checksum error appears or the video signal is not reversed when checking the read-back data after transmitting the data. (Successive failure 10 times)
		The main/engine PCB (PCB1) does not operate correctly. The connector and FFC are not connected properly or the wire, FFC or PCB is faulty.
		Turn off the power switch and pull out the power plug. After passing 5 seconds, reinsert the power plug and turn on the power switch. Clean the terminal of the connectors on the engine relay PCB (PCB21), reconnect the connector of the wire, and reconnect the FFC terminal. If the wire or the FFC is faulty, repair or replace them. If not resolved, replace the engine relay PCB (PCB21). Clean the terminal of the connectors on the main/engine PCB (PCB1), reconnect the connector of the wire, and reconnect the FFC terminal. If the wire or the FFC is faulty, repair or replace them. If not resolved, replace the main/engine PCB (PCB1).

SC No.	Type	Error Name/Error Condition/Major Cause/Solution
SC665-31	A	Engine firmware unexpected error
		The drum motor 1 (M7) drive continued for 60 min. or more while not printing. The developer bias turns on while the main charger bias is off. (On for 3,263 ms or more continuously) The high voltage remote or main charger DC bias turns on while the drum motor 1 (M7) is stopped. (On for 270 ms or more continuously) The periodic writing process to the EEPROM locked for 30 seconds. (The EEPROM writing is not processed for 30 seconds or other priority process occupies (locks) to have no process for the EEPROM.)
		The main power start-up is slow. The firmware is not the latest version. Main/engine PCB (PCB1) is not attached and connected properly. Main/engine PCB (PCB1) is faulty.
		Turn the power switch off and unplug the power plug. After 5 seconds, reconnect the power plug and turn the power switch on. Upgrade the engine firmware to the latest version. Fix main/engine PCB (PCB1) with screws and reconnect the connectors so that the ground is secured. Replace main/engine PCB (PCB1).

SC No.	Type	Error Name/Error Condition/Major Cause/Solution
SC668-00	D	SPI Communication Error
		The SPI communication error cannot be recovered within 10 seconds after the error occurred. The error recovery does not finish normally.
		FFC defective or disconnected BiCU (PCB2) defective Main/Engine PCB (PCB1) defective
		Turn the main power OFF/ON. Reconnect the FFC between BiCU (PCB2) and Main/Engine PCB (PCB1). Replace the FFC between BiCU (PCB2) and Main/Engine PCB (PCB1). Replace the BiCU (PCB2). Replace the Main/Engine PCB (PCB1).

SC No.	Type	Error Name/Error Condition/Major Cause/Solution
SC668-01	D	Main/Engine PCB (PCB1) Startup Error
		The signal to indicate the Main/Engine PCB (PCB1) has started up was not detected within 4 seconds.
		FFC defective or disconnected Main/Engine PCB (PCB1) defective BiCU (PCB2) defective
		Turn the main power OFF/ON. Reconnect the FFC between BiCU (PCB2) and Main/Engine PCB (PCB1). Replace the FFC between BiCU (PCB2) and Main/Engine PCB (PCB1). Replace the Main/Engine PCB (PCB1). Replace the BiCU (PCB2).

SC No.	Type	Error Name/Error Condition/Major Cause/Solution
SC668-02	D	BiCU (PCB2) – Main/Engine PCB (PCB1) Communication Reset Error
		The communication reset process and error recovery process are not completed properly.
		FFC defective or disconnected Main/Engine PCB (PCB1) defective BiCU (PCB2) defective
		Turn the main power OFF/ON. Reconnect the FFC between BiCU (PCB2) and Main/Engine PCB (PCB1). Replace the FFC between BiCU (PCB2) and Main/Engine PCB (PCB1). Replace the Main/Engine PCB (PCB1). Replace the BiCU (PCB2).

SC No.	Type	Error Name/Error Condition/Major Cause/Solution
SC668-03	D	BiCU (PCB2) – Main/Engine PCB (PCB1) Communication Retry Timeout Error
		The BiCU (PCB2) – Main/Engine PCB (PCB1) communication error cannot be recovered within 10 seconds after the error occurred.
		Main/Engine PCB (PCB1) defective BiCU (PCB2) defective FFC defective or disconnected
		Turn the main power OFF/ON. Replace the Main/Engine PCB (PCB1). Replace the BiCU (PCB2). Replace the FFC between BiCU (PCB2) and Main/Engine PCB (PCB1).

SC No.	Type	Error Name/Error Condition/Major Cause/Solution
SC669		EEPROM Communication Error
SC669-01	D	EEPROM OPEN: ID error
SC669-02	D	EEPROM OPEN: Channel error
SC669-03	D	EEPROM OPEN: Device error
SC669-04	D	EEPROM OPEN: Communication abort error
SC669-05	D	EEPROM OPEN: Communication timeout error
SC669-06	D	EEPROM OPEN: Operation stopped error
SC669-07	D	EEPROM OPEN: Buffer full
SC669-08	D	EEPROM OPEN: No error code
SC669-09	D	EEPROM CLOSE: ID error
SC669-10	D	EEPROM CLOSE: No error code
SC669-11	D	EEPROM Data write: ID error
SC669-12	D	EEPROM Data write: Channel error
SC669-13	D	EEPROM Data write: Device error
SC669-14	D	EEPROM Data write: Communication abort error
SC669-15	D	EEPROM Data write: Communication timeout error
SC669-16	D	EEPROM Data write: Operation stopped error
SC669-17	D	EEPROM Data write: Buffer full
SC669-18	D	EEPROM Data write: No error code
SC669-19	D	EEPROM Data read: ID error
SC669-20	D	EEPROM Data read: Channel error
SC669-21	D	EEPROM Data read: Device error
SC669-22	D	EEPROM Data read: Communication abort error
SC669-23	D	EEPROM Data read: Communication timeout error
SC669-24	D	EEPROM Data read: Operation stopped error
SC669-25	D	EEPROM Data read: Buffer full
SC669-26	D	EEPROM Data read: No error code
SC669-36	D	Verification error
SC669-37	D	Error Detection
		Communication with the EEPROM failed after retrying N^1 times. (1 SC669-01 to 26: 3, SC669-36: 2, SC669-37: 1)
		Electrical noise EEPROM not installed correctly EEPROM defective BiCU (PCB2) defective
		Turn the main power OFF/ON. Reinstall the EEPROM on the BiCU (PCB2). Replace the EEPROM on the BiCU (PCB2). Replace the BiCU (PCB2).

SC No.	Type	Error Name/Error Condition/Major Cause/Solution
SC689-01	D	EEPROM Communication Error 1
		No response from the device in reading/writing for 5 seconds or more and this problem is repeated 5 times. The reading data of 2 locations does not match 8 times consecutively. The writing data and reading date does not match 8 times consecutively.
		EEPROM on the controller board (PCB3) defective
		Turn the main power OFF and wait for 5 seconds. Then turn ON the main power. Check whether the EEPROM on the controller board (PCB3) is installed correctly. If necessary, reinstall it. Replace the controller board (PCB3). If the EEPROM on the controller board (PCB3) is damaged, replace the EEPROM.

SC No.	Type	Error Name/Error Condition/Major Cause/Solution
SC689-02	D	EEPROM device error (main/engine PCB (PCB1))
		Data from the EEPROM cannot be read at start-up (3 times retries)
		EEPROM (main/engine PCB (PCB1)) is faulty. The connector and FFC are not connected properly or the wire, FFC or PCB is faulty.
		Turn off the power switch and pull out the power plug. After passing 5 seconds, reinsert the power plug and turn on the power switch. Clean the terminal of the connectors on the main/engine PCB (PCB1), reconnect the connector of the wire, and reconnect the FFC terminal. If the wire or the FFC is faulty, repair or replace them. If not resolved, replace the main/engine PCB (PCB1).

SC No.	Type	Error Name/Error Condition/Major Cause/Solution
SC690-00	C	EEPROM Data Error
		Reading data from EEPROM is abnormal.
		The EEPROM does not operate properly. The EEPROM is faulty.
		Turn off the power switch and pull out the power plug. After passing 5 seconds, reinsert the power plug and turn on the power switch. Replace the EEPROM on the main/engine PCB (PCB1) amd execute initialization.

SC No.	Type	Error Name/Error Condition/Major Cause/Solution
SC691-00	D	Image Processing Error
		The print sequence jam is detected 2 times in succession.
		The image data is faulty. The printing operation of the certain file is faulty. The connector and FFC are not connected properly or the wire, FFC or PCB is faulty.
		When this issue occurs only when handling the certain image data, check if the image data is faulty. Acquire the job's log if the phenomenon can be reproduced by specifying the job when the error was detected. Clean the terminal of the connectors on the main/engine PCB (PCB1), reconnect the connector of the wire, and reconnect the FFC terminal. If the wire or the FFC is faulty, repair or replace them. If not resolved, replace the main/engine PCB (PCB1).