Gestetner B147 Service Manual page 208

PROCESS CONTROL ERROR CONDITIONS
Possible Cause
8 The MUSIC CPU is abnormal (2)
No error code is displayed. However,
the machine keeps displaying
"execution" on the screen.
The green LED on the BICU keeps
blinking faintly (this is normal) even
under one of 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.
B147/B149/B190
Possible
Error Code
-
1. Check the connection between
the detection board and memory
chip.
2. Replace the toner cartridge.
4-6
Action
SM