Blown Fuse Conditions - Ricoh A109 Service Manual

2. BLOWN FUSE CONDITIONS

Rating
Fuse
115V
DC Power Supply Board
FU801 15A/125V
FU802 6.3A/125V
FU803 6.3A/125V
FU804 6.3A/125V
FU805 6.3A/125V
FU806 6.3A/125V
FU807 6.3A/125V
FU808 5A/125V
Option Interface Board
FU301
3.15A/250V
(5V)
FU302
3.15A/250V
(24V)
FSM
Symptom (Main Switch: ON)
220 – 240V
5A/250V No response (Dead machine)
6.3A/250V SC900 (Bk-total counter not on)
SC121 (Scanner HP sensor abnormal
6.3A/250V - stays on) or SC120 (Scanner HP
sensor abnormal - stays off)
6.3A/250V SC900 (Bk-total counter not on)
SC346 (Color - development motor
lock)
6.3A/250V
or SC120 (Scanner - HP sensor
Abnormal)
6.3A/250V No response
The LCD lights instantly and turns off.
6.3A/250V
No other response
The LCD lights instantly and turns off.
5A/250V
No other response
The display editor screen stays on.
SC622 (Communication error
between main control board and
display editor) appears when the Area
editing key is pressed.
When the display editor is used, the
LCD screen is dim (not bright enough).
No other abnormal condition.
6-25
Rev. 7/94
A109