Description: Exposure lamp failure - Timing & Condition - • The lamp output check signal (LAMPDET) is still HIGH 250 ms after the lamp turns on (the ON check is canceled if the lamp goes off within 250 ms). • The lamp output check signal is still LOW 30ms after the lamp turns off (the OFF check is canceled if the lamp turns on within 30 ms).
Remedy: 1. Visually check the lamp element or check both ends of the lamp terminals with a multi-meter. 2. Check the current at the ends of the thermostat terminals with a multi-meter. 3. Check if the connectors (CN1, CN2, and CN3) on the lamp regulator are properly connected. 4. Check the current through the 3 harnesses. 5. If 100Vac is provided from the AC drive board (check CN3-1 and 5 on the lamp regulator) replace the lamp regulator. 6. If 100Vac is not supplied at CN3, Replace the AC drive board. 7. Replace the sub scanner IPU board and/or main scanner IPU board [Signal Check] • LAMPDET: CN2-2 on the lamp regulator/ CN403-A10 on the sub scanner IPU board • LAMPTRIG: CN403-A9 on the sub scanner IPU board/CN2-3 on the lamp regulator
Code: SC120
Description: Scanner HP sensor does not turn on - Timing & Condition - • The scanner H.P. sensor does not turn on when the scanner moves back to the home position or at the home position check. • The sensor output at CN403-A1 stays HIGH (5V).
Causes: • Scanner motor out of synchronization (drive error) • Poor connection of connectors • Defective scanner HP sensor • Defective sub/main scanner IPU board • Defective main control board
Remedy: 1. In SP 5-804-104, stop supplying the current to the scanner motor. Check the output signal from the scanner H.P. sensor in SP 5-803-100 by moving the scanner manually. (0: Not actuated; 1: Actuated - at H.P.) 2. If the result of step 1 is OK; 1) Check the tension of the timing belt. 2) Check if the pulley is firmly secured. 3) Check if the scanner wire is properly wired 4) Check the connection of CN700, CN701, and CN702 on the scanner motor drive board. 5) Check a current through the harnesses. 6) Replace the scanner motor drive board. 7) Replace the scanner motor. 3. If the result of step 1 is not OK; 1) Make sure the harness is properly connected. 2) Check a current through the harnesses. 3) Replace the sensor. 4) Replace the sub and/or main scanner IPU board(s). 5) Replace the main control board. [Signal Check] • Scanner HP: CN403-A1 on the sub scanner IPU board
Code: SC121
Description: Scanner HP sensor does not turn off - Timing & Condition - • The sensor does not turn off when the scanner moves to the home position after scanning an original. • The sensor output at CN403-A1 stays LOW (0V).
Causes: • Scanner motor out of synchronization (drive error) • Poor connection of connectors • Defective scanner HP sensor • Defective sub/main scanner IPU board • Defective main control board
Remedy: 1. In SP 5-804-104, stop supplying the current to the scanner motor. Check the output signal from the scanner H.P. sensor in SP 5-803-100 by moving the scanner manually. (0: Not actuated; 1: Actuated - at H.P.) 2. If the result of step 1 is OK; 1) Check the tension of the timing belt. 2) Check if the pulley is firmly secured. 3) Check if the scanner wire is properly wired 4) Check the connection of CN700, CN701, and CN702 on the scanner motor drive board. 5) Check a current through the harnesses. 6) Replace the scanner motor drive board. 7) Replace the scanner motor. 3. If the result of step 1 is not OK; 1) Make sure the harness is properly connected. 2) Check a current through the harnesses. 3) Replace the sensor. 4) Replace the sub and/or main scanner IPU board(s). 5) Replace the main control board. [Signal Check] • Scanner HP: CN403-A1 on the sub scanner IPU board
Code: SC130
Description: Scanner start error - Timing - • Scanning start • During scanner motor ON - Condition - • The scanning start signal is generated while the motor is moving. • Total number of steps calculated based on the signal from the stepping motor is out of range. • The H.P. sensor stays OFF when the scanner starts moving.
Causes: • Scanner motor out of synchronization (drive error) • Poor connection of connectors • Defective scanner HP sensor • Defective sub/main scanner IPU board • Defective main control board
Remedy: 1. In SP 5-804-104, stop supplying the current to the scanner motor. Check the output signal from the scanner H.P. sensor in SP 5-803-100 by moving the scanner manually. (0: Not actuated; 1: Actuated - at H.P.) 2. If the result of step 1 is OK; 1) Check the tension of the timing belt. 2) Check if the pulley is firmly secured. 3) Check if the scanner wire is properly wired 4) Check the connection of CN700, CN701, and CN702 on the scanner motor drive board. 5) Check a current through the harnesses. 6) Replace the scanner motor drive board. 7) Replace the scanner motor. 3. If the result of step 1 is not OK; 1) Make sure the harness is properly connected. 2) Check a current through the harnesses. 3) Replace the sensor. 4) Replace the sub and/or main scanner IPU board(s). 5) Replace the main control board. [Signal Check] • Scanner HP: CN403-A1 on the sub scanner IPU board
Code: SC150
Description: Scanner ROM mismatch - Timing - After software installation or when the main switch is turned on - Condition - Main scanner IPU detects that the incorrect software is installed.
Causes: • An invalid IC card used (such as a different model IC card) • Main scanner IPU board was replaced.
Remedy: Reinstall the correct IC card. Replace the main scanner IPU board.
Code: SC170
Description: Video processing error 1 - Timing - When the main switch is turned on (after auto gain control at scanner IPU board) - Condition - The black level corrected between the Odd and Even (O/E) of the CCD is outside the proper range.
Remedy: 1. Make sure the flat cable is firmly connected at CN501 and CN404 on the CCD board and main scanner IPU board. 2. Test the current through the flat cable. 3. Replace main scanner IPU board. 4. Replace CCD board as the lens unit assembly.