Description: Scanner home position error 2 The scanner HP sensor does not detect the ON condition during initialization or copying.
Causes: • BICU defective • Scanner motor defective • Scanner HP sensor defective • Harness between BICU, SIOB, scanner motor disconnected • Harness between scanner HP sensor and BICU disconnected • Scanner wire, timing belt, pulley or carriage installed incorrectly.
Remedy: • Inspect installation of scanner wire, timing belt, pulley, carriage. • Inspect the HP sensor harness • Inspect harnesses to BICU • Check function of scanner HP sensor (input/output check) and replace sensor if defective. • Check operation of scanner motor (input/output check) and replace motor if defective. • Replace BICU.
Code: SC141-00
Description: Black level detection error The black level cannot be adjusted within the target during auto gain control.
Remedy: • Check the harness connections from scanner unit to BICU • Replace the lens block (new SBU) • Replace the BICU
Code: SC142-00
Description: White level detection error The white level cannot be adjusted to the second target level within the target during auto gain control.
Causes: • Dirty exposure lamp or optics section • SBU board defective • BICU board defective • Harnesses are disconnected. • Exposure LED (lamp) defective • Lamp stabilizer defective • Scanner motor defective
Remedy: • Clean the exposure glass, white plate, mirrors, and lens. • Check if the exposure LEDs light during initialization • Check the harness connections • Replace the exposure LED lamps. • Replace the scanner motor. • Replace the lens block (SBU), BICU
Code: SC144-00
Description: SBU transmission error After the SBU switches on, the BICU detects one of the following conditions on the SBU: • 1 s after power on, the SYDO signal does not go high, even after 1 retry. • 1 s after power on, the SYDO signal goes high, but the SBU ID could not be read after 3 attempts.
Causes: • SBU defective • BICU defective
Remedy: • Inspect harness between scanner unit and BICU • Replace lens block (new SBU) • Replace BICU.
Code: SC151-00
Description: Black level error: Back side Not even one pixel was within permitted range when the black level was created.