Sc4Xx: Image Processing - Ricoh M052 Service Manual

Service Call Conditions
LD error
240 B
The IPU detected a problem at the LD unit.
LD unit harness broken, defective
BICU harness broken defective
LD unit defective
BCU defective
SC3xx: Image Processing – 1
Charge level output error
312 D
The PWM output level was detected higher or lower than 50% for 200 ms.
HVPS (High Voltage Power Supply) board harness loose, broken.
Terminal loose or broken at the charge rollers T
Development bias leak
320 D
A development bias leak signal is detected.
Poor connection at the development bias terminal
High voltage supply board defective

SC4xx: Image Processing - 2

440 D Transfer roller leak error 1
A transfer roller current leak signal wad detected higher or lower than 50%
for 200 ms. (The current feedback signal for the transfer roller was not
detected within the correct time.)
High voltage supply board set incorrectly or defective
Transfer roller set incorrectly or damaged
Transfer roller set incorrectly
M052/M053/M054 6-8 SM