BLOWN FUSE CONDITIONS
SM 4-17 G065
Trouble-
shooting
4.3 BLOWN FUSE CONDITIONS
Rating
Fuse
115 V 210 ~ 230 V
Symptom at power on
Power Supply Board
FU1
6.3 A/125 V 6.3 A/250 V “Doors/Covers Open” is displayed
FU2
6.3 A/125 V 6.3 A/250 V “Doors/Covers Open” for the finisher is displayed
FU3
6.3 A/125 V 4 A/250 V Paper end condition
FU4
6.3 A/125 V 6.3 A/250 V SC121 is displayed
FU5
6.3 A/125 V 6.3 A/250 V SC302, or SC403, or SC405 displayed
FU101
15 A/125 V — No response
FU102
10 A/12 5V 5 A/250 V No response
FU103
2 A/125 V 1 A/250 V Normal operation (optional heaters do not work)
4.4 LEDS
BICU
Number Monitored Signal
LED101
Monitors whether the program is working normally or not. The LED blinks in
normal conditions.
LED102
Flashes during program downloading.
4.5 TEST POINTS
Controller Board
No. Monitored Signal
TP1 GND
TP2 —
TP3 GND
TP4 —
TP5 —
TP6 GND
TP7 +3.3 VCG
TP8 DB0 RXD
TP9 DB0 TXD
TP10 GND
TP11 +5 VE
TP12 GND
TP13 +5 V
TP14 +5 VE
TP15 GND
TP16 R.FGATE
TP17 W.FGATE
TP18 +2.5 V
TP19 +1.65 VCP
TP20 +3.3 V
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