Harness between the SIOB – PSU is disconnected.Harness between the SIOB – BCU is disconnected.Harness between the SBU – SIOB is disconnected.1 s after power on, the SYDO signal goes high, but the SBU ID could not be read after 3 attempts.1 s after power on, the SYDO signal does not go high, even after 1 retry.SBU transmission error After the SBU switches on, the BCU detects one of the following conditions on the SBU: White level detection error The white level cannot be adjusted to the second target level within the target during auto gain control. Harness between SIOB – BCU is disconnected.Harness between SBU – SIOB is disconnected.Scanner wire, timing belt, pulley or carriage installed incorrectly.īlack level detection error The black level cannot be adjusted within the target during auto gain control.Harness between scanner HP sensor and BCU disconnected.Harness between BCU, SIOB, scanner motor disconnected.Scanner home position error 2 The scanner HP sensor does not detect the ON condition during initialization or copying. Scanner wire, timing belt, pulley, or carriage installed incorrectly.Scanner home position error 1 The scanner HP sensor does not detect the OFF condition during initialization or copying.

Scanner mirror dirty, out of position or has condensation.

Standard white plate dirty, disconnected or has condensation.

Lamp stabilizer harness damaged, disconnected.

Exposure Lamp Error At trigger on, the lamp was not detected on.

Bizhub c452 document feeder skewed