Service manual

PROCESS CONTROL ERROR CONDITIONS
SM 4-7 G130/G131
Trouble-
shooting
Possible Cause
Possible
Error Code
Action
The machine is not in the condition to execute the line position adjustment;
The machine is in the toner near end
or end condition.
13 Replenish toner.
The machine is not ready to do the
line position adjustment manually from
the user menu.
17 Wait until machine goes to the ready
condition from the energy saver or
auto off mode.
6
Line position adjustment cannot be
done due to failed potential control.
18 Fix the problem causing the potential
control error.
The MUSIC CPU is abnormal (1) 7
No error code shows. However, the
machine continues to show
“execution” on the screen.
In addition, the green LED on the
BICU stays on or off under the
following condition.
1. The MUSIC CPU resets due to
electrical noise generated by a high
voltage leak on a damaged OPC
drum.
1. Fix the bias leak and/or replace
PCU
The MUSIC CPU is abnormal (2) 8
No error code shows. However, the
machine continues to show
“execution” on the screen.
The green LED on the BICU keeps
blinking faintly (this is normal) even
under the following conditions:
1. Poor connection between the toner
cartridge detection board and the
memory chip on the toner cartridge
2. The memory chip on the toner
cartridge fails.
1. Check the connection between
the detection board and memory
chip.
2. Replace the toner cartridge.