SERVICE CALL CONDITIONS
B135/B138 4-2 SM
4.1.2 SC CODE DESCRIPTIONS
Code No. Symptom Possible Cause
Exposure lamp error 101 C
The standard white level was not
detected properly when scanning the
white plate.
• 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
Scanner home position error 1 120 B
The scanner home position sensor does
not detect the on condition during
initialization or copying.
• SIB or scanner drive motor defective
• Scanner motor defective
• Harness between SIB and scanner
drive motor disconnected
• Harness between SIB and scanner
drive motor power source
disconnected
• Scanner HP sensor defective
• Harness between SIB and HP sensor
disconnected
• Scanner wire, timing belt, pulley, or
carriage defective
Scanner home position error 2 121 B
The scanner home position sensor does
not detect the off condition during
initialization or copying.
• SIB or scanner motor drive board
defective
• Scanner motor defective
• Harness between SIB and scanner
drive motor disconnected
• Harness between SIB and scanner
drive motor power source
disconnected
• Scanner HP sensor defective
• Harness between SIB and scanner
HP sensor disconnected
• Scanner wire, timing belt, pulley, or
carriage defective
SBU defective 130 B
Within 1 second after power on, the
SOUT signal does not go high, or within
1 second after power on the SOUT
signal goes high, but the SBU ID could
not be read after two attempts.
• SBU defective
• BICU defective
• Harness between SBU and BICU
disconnected or damaged
F-Gate asserts during shading 131 B
F-Gate was asserted by the DF during
shading.
• While scanning at the DF, a software
setting procedure caused an error.
You must reboot the machine.
Charge roller current leak 302 C
A charge roller current leak signal was
detected.
• Charge roller damaged
• High voltage supply board defective
• PCU harness defective or
disconnected
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