• Code: 842.12
• Description: Service scanner failure Scanner unit assembly communication failure Communication failure occurred between the scanner controller card assembly and the RIP card assembly.
• Remedy: 1 Check all connections of the scanner controller card assembly. Are the connections of the scanner controller card assembly connected properly? Go to step 2. Replace all connections. 2 Check all connections of the ADF controller card assembly. Are the connections of the ADF controller card assembly connected properly? Go to step 3. Replace all connections. 3 Perform a POR. Does the error remain when the power is turned off/on? Replace the ADF controller card assembly. Go to “ADF controller card assembly removal”. Problem solved. 4 Perform a POR. Does the error remain when the power is turned off/on? Replace the scanner controller card assembly. Go to “Scanner controller card assembly removal”. Problem solved.

• Code: 843.00
• Description: Service scanner failure Sensor (scanner HP) failure An failure occurred while counting the pulses of the scanner drive motor assembly. After the Carriage Motor turned on, the sensor (scanner HP) did not turn on within the specified time.
• Remedy: 1 Check the scanner carriage rails. Is there any foreign substance on the scanner rails? Clean and lubricate the scanner carriage rails. Go to step 2. 2 Check the sensor (scanner HP) for operation. Perform the sensor (scanner HP) test. Remove the large platen glass. Go to “Large platen glass removal”. 1. Enter the Diagnostics Menu. 2. Touch SCANNER TESTS. 3. Touch Sensor Tests. 4. Touch Scanner HP. Gently move the scanner carriage side to side. Does the display on the operator panel change every time the sensing area of the above sensor is blocked? Go to step 4. Go to step 3. 3 Check the sensor (scanner HP) for connection. Is the above sensor connected properly? Replace the sensor (scanner HP). Go to “Sensor (scanner HP) removal”. Replace the connection. 4 Check the scanner drive motor assembly. Perform the scanner drive motor test. 1. Enter the Diagnostics Menu. 2. Touch MOTOR TESTS. 3. Touch Scanner Motor Tests. 4. Touch Scanner drv mtr. 5. Touch Forward or reverse. Does the scanner drive motor assembly operate properly? Go to step 6. Go to step 5. 5 Check the scanner drive motor assembly for connection. Is the above motor connected properly? Replace the scanner drive motor assembly. Go to “Scanner drive motor assembly removal”. Replace the connection. 6 Place media on the large platen and perform a scanner test. Does the error remain? Replace the scanner controller card assembly. Go to “Scanner controller card assembly removal”. Problem solved

• Code: 843.01
• Description: scanner failure Scanner carriage over run failure The scanner carriage has over run.
• Remedy: 1 Check the connections of the scanner controller card assembly. Are the connectors of the scanner controller card assembly connected properly? Go to step 2. Connect each connector of the scanner controller card assembly properly. 2 Perform a POR. Does the error remain when the power is turned off/on? Replace the scanner controller card assembly. Go to “Scanner controller card assembly removal”. Problem solved.

• Code: 843.10
• Description: Service scanner failure ADF RAM test failure The ADF controller card assembly RAM has failed in the read/write operation. (It checks at the time of power on)
• Remedy: 1 Check the connection between the ADF controller card assembly and the scanner controller card assembly Are the ADF controller card assembly and the scanner controller card assembly connected properly? Replace the ADF controller card assembly. Go to “ADF controller card assembly removal”. Connect the ADF controller card assembly and the scanner controller card assembly properly. 2 Perform a POR. Does the error remain when the power is turned off/on? Replace the scanner controller card assembly. Go to “Scanner controller card assembly removal”. Go to step 3.

• Code: 843.11
• Description: Service scanner failure ADF EEPROM failure The ADF-EEPROM failed during the read/write operation
• Remedy: 1 Check the connection of each ADF controller card assembly connector. Is each connector of ADF controller card assembly connected properly? Go to step 2. Connect each connector of ADF controller card assembly properly. 2 Perform a POR. Does the error remain when the power is turned off/on? Replace the ADF controller card assembly. Go to “ADF controller card assembly removal”. Problem solved.

• Code: 843.12
• Description: Service scanner failure ADF pick roll position lift up failure After the pick roll position motor assembly started reverse rotation, the sensor (pick roll position HP) did not turn on within the specified time. After the pick roll position motor assembly started normal rotation, the sensor (pick roll position HP) did not turn off within the specified time.
• Remedy: 1 Check the feed/pick roll assembly. Remove the left cover media guide. Does The feed/pick roll assembly moves smoothly up/down when the gears are manually rotated? Go to step 2. Replace the feed/ pick roll assembly. 2 Check the sensor (pick roll position HP) for operation. Perform the sensor (pick roll position HP) test. Open the ADF left cover assembly. Remove the ADF left cover media guide. Go to “ADF left cover media guide removal”. 1. Enter the Diagnostics Menu. 2. Touch SCANNER TESTS. 3. Touch Sensor Tests. 4. Touch Pick roll position HP. Manually rotate the gears of the pick roll position motor assembly to raise and lower the pick roll. Does the display on the operator panel change every time the sensing area of the above sensor is blocked? Go to step 4. Go to step 3. 3 Check the sensor (pick roll position HP) for connection. Is the above sensor connected properly? Replace the sensor (pick roll position HP). Go to “Sensor (pick roll position HP) removal”. Replace the connection. 4 Check the pick roll position motor assembly. Perform the pick roll position motor test. Open ADF left cover assembly. Override the switch (ADF left cover interlock). 1. Enter the Diagnostics Menu. 2. Touch MOTOR TESTS. 3. Touch Scanner Motor Tests. 4. Touch Pick roll position mtr. Does the pick roll position motor assembly raise and lower properly? Go to step 6. Go to step 5. 5 Check the pick roll position motor assembly for connection. Is the above motor connected properly? Replace the pick roll position motor assembly. Go to “Pick roll position motor assembly removal”. Replace the connection. 6 Place an undamaged document in the ADF, and perform a ADF test. Does the error remain? Replace the ADF controller card assembly. Go to “ADF controller card assembly removal”. Go to step 7.

• Code: 843.20
• Description: Service scanner failure Scanner unit assembly connection failure There is an open circuit in the scanner interface cable assembly between the scanner controller card assembly and the RIP card assembly.
• Remedy: 1 Check the connection of each ADF controller card assembly connector. Is each connector of ADF controller card assembly connected properly? Go to step 2. Connect each connector of ADF controller card assembly properly. 2 Check the connection of each RIP card assembly connector. Are the connectors of the RIP card assembly connected properly? Go to step 3. Connect each connector of the RIP card assembly properly. 3 Perform a POR. Does the error remain when the power is turned off/on? Replace the ADF controller card assembly. Go to “ADF controller card assembly removal”. Problem solved.

• Code: 843.21
• Description: Service scanner failure Scanner unit assembly EEPROM failure The scanner unit assembly EEPROM failed during the read/write operation.
• Remedy: 1 Check the connections of the scanner controller card assembly connector Is each connector of scanner controller card assembly connected properly? Go to step 2. Connect each connector of the scanner controller card assembly properly. 2 Perform a POR. Does the error remain when the power is turned off/on? Replace the ADF controller card assembly. Go to “ADF controller card assembly removal”. Problem solved.