Ricoh D009, Service Manual

Page: 235 / 1165

SC Tables: SC3xx
SM 4-9 D009/D011/D012/D013
Tr
ouble
-
shooting
4.4 SC TABLES: SC3XX
Charge roller bias leak
A charge roller bias leak signal was detected.
302 D
ƒ Charge roller damaged
ƒ High voltage supply board defective
ƒ PCDU harness defective or disconnected
Charge roller bias correction leak
The charge roller bias correction is performed twice even if the maximum
charge roller bias (-2000V) is applied to the roller.
304 D
ƒ ID sensor defective
ƒ Worn charge roller
ƒ Charge roller damaged
Development roller bias leak
The maximum PMW duty (65%) is detected for 60 ms after the high voltage
has been supplied to the development unit.
320 D
ƒ Development bias leak
ƒ Broken harness
ƒ Defective high voltage power supply, voltage supply
ƒ Defective high voltage supply unit
Development paddle motor error
The machine detects a lock signal error from the development puddle motor
for 2 seconds after the drum motor has turned on.
324 D
ƒ Overload on the development puddle motor
ƒ Defective development puddle motor