Sc Code Descriptions - Gestetner B003 Service Manual

SERVICE CALL CONDITIONS

4.1.2 SC CODE DESCRIPTIONS

Code No.
101 C Exposure lamp error
The standard white level was not
detected properly when scanning the
white plate.
120 B Scanner home position error 1
The scanner home position sensor
does not detect the on condition
during initialization or copying.
121 B Scanner home position error 2
The scanner home position sensor
does not detect the off condition
during initialization or copying.
130 B SBU defective
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.
131 B F-Gate asserts during shading
F-Gate was asserted by the DF during
shading.
302 C Charge roller current leak
A charge roller current leak signal was
detected.
304 C Charge roller current correction error
The charge roller bias correction is
performed twice even if the
maximum charge roller bias (-2000V)
is applied to the roller.
B003/B004/B006/B007
Symptom
4-2
Possible Cause
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
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
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
BICU defective
Harness between SBU and BICU
disconnected or damaged
While scanning at the DF, a software
setting procedure caused an error.
You must reboot the machine.
Charge roller damaged
High voltage supply board defective
PCU harness defective or disconnected
ID sensor defective
SM