Description: Exposure lamp error -001: Shading at AGC -002: Shading at scanning. The peak white level is less than 64/255 digits (8 bits) when scanning the shading plate. (The shading data peak does not reach the specified threshold)
Causes: • Exposure lamp defective • Lamp stabilizer defective • Exposure lamp connector defective • Standard white plate dirty • Scanner mirror or scanner lens out of position or dirty • SBU defective
Remedy: 1. Check and clean the scanner mirror(s) and scanner lens. 2. Check and clean the shading plate. 3. Replace the exposure lamp. 4. Replace the lamp stabilizer. 5. Replace the scanner mirror(s) or scanner lens. 6. Replace the SBU.
Code: 120
Description: Scanner home position error 1 The scanner home position sensor does not detect the “OFF” condition during operation.
Causes: • Scanner motor driver defective • Scanner motor defective • Harness between SIO board and scanner motor disconnected • Scanner HP sensor defective • Harness between SBU and HP sensor disconnected
Remedy: 1. Check the cable connection between the SIO board and scanner motor. 2. Check the cable connection between the SBU and HP sensor. 3. Replace the scanner motor. 4. Replace the HP sensor.
Code: 121
Description: Scanner home position error 2 The scanner home position sensor does not detect the “ON” condition during operation.
Causes: • Scanner motor driver defective • Scanner motor defective • Harness between SIO board and scanner motor disconnected • Scanner HP sensor defective • Harness between SBU and HP sensor disconnected
Remedy: 1. Check the cable connection between the SIO board and scanner motor. 2. Check the cable connection between the SBU and HP sensor. 3. Replace the scanner motor. 4. Replace the HP sensor.
Code: 141
Description: Black level detection error The black level cannot be adjusted within the target value during the zero clamp.
Causes: • Defective SBU
Remedy: 1. Replace the SBU.
Code: 142
Description: White level detection error The white level cannot be adjusted within the target during auto gain control.
Remedy: 1. Clean the exposure glass, white plate, mirrors, and lens. 2. Check if the exposure lamp is lit during initialization. 3. Check the harness connection between SBU and BICU. 4. Replace the exposure lamp. 5. Replace the SBU board.
Code: 144-001
Description: SBU connection error The SBU connection cannot be detected at power on or recovery from the energy save mode.
Causes: • Insufficient power supply for SBU • Defective SBU • Defective harness • Defective detection port on the BCU
Remedy: 1. Replace the harness. 2. Replace the SBU. 3. Replace the BICU.