Blown Fuse Table; Switch Failure Table - Ricoh FT7770 Service Manual

30
April, '89

Blown Fuse Table

5.
(All fuses are fast-acting and are on the motor control board.)
Fuse
Current
No.
Capacity Protects Machine Displays
FU101
0.3A
FU102 5A

6. Switch Failure Table

Name
Lift Switch
Feed-in Unit
Safety Switch
Inverter Unit
Safety Switch
12V line
Original Misfeed indicator
circuit
Copier
DF is off
Condition Machine Displays
The DF is disabled; it cannot be
Open
used and nothing is displayed.
Short The Insert Original indicator
remains lit even when the DF is
lifted up.
Open The feed-in unit is disabled, and
no displays light up.
Short The Insert Original indicator
remains lit even when the feed-in
unit cover is open.
The display indicates that the
Open
inverter unit is open, even though it
is closed.
indicator does not light.
There is no indication that the
Short
inverter unit is opened.
turns on.
The Insert Original
7-36