Electrical Problems; The Machine Does Not Operate When The Power Switch Is Turned On; The Main Motor Does Not Operate; Cooling Fan Does Not Operate - Kyocera FS-1020D Service Manual

2FM

1-5-4 Electrical problems

Problem
(1)
The machine does
not operate when
the power switch is
turned on.
(2)
The main motor
does not operate.
(3)
Cooling fan does
not operate.
(4)
The feed clutch
does not operate.
(5)
The MP feed clutch
does not operate.
1-5-18
Causes
No electricity at the power
outlet.
The power cord is not
plugged in properly.
The front cover is not
closed completely.
Broken power cord.
Defective power switch.
Blown fuse in the power
supply board.
Defective interlock switch.
Defective power supply
board.
Poor contact in the main
motor connector terminals.
Broken main motor gear.
Defective main motor.
Defective engine board
(KP-1046).
Broken Cooling fan coil.
Poor contact in the Cool-
ing fan connector termi-
nals.
Broken feed clutch coil.
Poor contact in the feed
clutch connector terminals.
Defective engine board
(KP-1046).
Broken MP feed clutch
coil.
Poor contact in the MP
feed clutch connector ter-
minals.
Defective engine board
(KP-1046).
Check procedures/corrective measures
Measure the input voltage.
Check the contact between the power plug and the outlet.
Check the front cover.
Check for continuity. If none, replace the cord.
Check for continuity across the contacts. If none, replace the
power switch.
Check for continuity. If none, remove the cause of blowing and
replace the fuse.
Check for continuity across the contacts of switch. If none, re-
place the switch.
With AC present, check for 24 V DC at CN2-12, 2-13 and 5 V
DC at CN2-1, 2-2 on the power supply board. If none, replace
the power supply board.
Reinsert the connector. Also check for continuity within the con-
nector cable. If none, remedy or replace the cable.
Check visually and replace the main motor if necessary.
Run maintenance item U030 and check if the main motor oper-
ates and replace the main motor if necessary.
Replace the engine board (KP-1046).
Check for continuity across the coil. If none, replace Cooling fan.
Reinsert the connector. Also check for continuity within the con-
nector cable. If none, remedy or replace the cable.
Check for continuity across the coil. If none, replace the feed
clutch.
Reinsert the connector. Also check for continuity within the con-
nector cable. If none, remedy or replace the cable.
Replace the engine board (KP-1046).
Check for continuity across the coil. If none, replace the MP feed
clutch.
Reinsert the connector. Also check for continuity within the con-
nector cable. If none, remedy or replace the cable.
Replace the engine board (KP-1046).