Service manual

BLOWN FUSE CONDITIONS
G130/G131 4-68 SM
4.7 BLOWN FUSE CONDITIONS
Main PSU
The table lists the fuses on the main power supply unit.
Rating
Fuse
115 V 220 - 240 V
Symptom when turning on the main
switch
FU1 15A/125V —
CB1 — 8A/250V
No response (No power is supplied to
the electrical components.)
FU2 10A/125V 5 A/250V
No response (No DC power is
supplied to the electrical components.)
FU91 10 A/125V 10 A/125V
The 24V DC power is not supplied.
The message, “Close Front Cover,”
shows.
FU92 6.3 A/125V 6.3 A/125V
"SC 471 Power Off On" shows on the
operation panel.
FU93 2A/250V –
No response (No DC power is
supplied to the electrical components.)
Sub PSU
The table lists the fuses on the sub power supply unit.
Rating
Fuse
115V 220–240V
Symptom when turning on the main
switch
F1 4A/250V 3.15A/250V
The two-tray finisher or booklet
finisher is not detected. “Close Duplex
Unit Cover” shows.
F2 8A/250V 8A/250V
The two-tray finisher or booklet
finisher is not detected. “Close Duplex
Unit Cover” shows.
4.8 LEDS (BCU)
Status
LED
Blinking Stays OFF or ON
LED 3 (Red)
The Main CPU functions
correctly.
The Main CPU does not function
correctly.
LED 2 (Green)
The MUSIC CPU functions
correctly.
The MUSIC CPU does not function
correctly.
LED 1 (Yellow) The DSP functions correctly. The DSP does not function correctly.