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1-5-4 Electrical problems
Problem
(1)
No electricity at the power
The machine does
outlet.
not operate when
The power cord is not
the main switch is
plugged in properly.
turned on.
The front cover, conveying
cover and/or side cover
are/is not closed com-
pletely.
Broken power cord.
Defective main switch.
Blown fuse in the power
source PCB.
Defective safety switch 1
or 2.
Defective power source
PCB.
(2)
Poor contact in the drive
The drive motor
motor connector terminals.
does not operate
Broken drive motor gear.
(C2000).
Defective drive motor.
Defective main PCB.
(3)
Poor contact in the paper
The paper feed mo-
feed motor connector ter-
tor does not operate
minals.
(C2500).
Broken paper feed motor
gear.
Defective paper feed mo-
tor.
Defective main PCB.
(4)
Poor contact in the eject
The eject motor
motor connector terminals.
does not operate.
Broken eject motor gear.
Defective eject motor.
Defective eject switch.
Causes
Measure the input voltage.
Check the contact between the power plug and the outlet.
Check the front cover, conveying cover and side cover.
Check for continuity. If none, replace the cord.
Check for continuity across the contacts. If none, replace the
main switch.
Check for continuity. If none, remove the cause of blowing and
replace the fuse.
Check for continuity across the contacts of each switch. If none,
replace the switch.
With AC present, check for 24 V DC at CN1-1 and 5 V DC at
CN1-5 on the power source PCB. If none, replace the power
source PCB.
Reinsert the connector. Also check for continuity within the con-
nector cable. If none, remedy or replace the cable.
Check visually and replace the drive motor if necessary.
Run maintenance item U030 and check if the drive motor oper-
ates when CN11-9 on the main PCB goes low. If not, replace the
drive motor.
Run maintenance item U030 and check if CN11-9 on the main
PCB goes low. If not, replace the main PCB.
Reinsert the connector. Also check for continuity within the con-
nector cable. If none, remedy or replace the cable.
Check visually and replace the paper feed motor if necessary.
Run maintenance item U030 and check if the paper feed motor
operates when CN11-10 on the main PCB goes low. If not, re-
place the paper feed motor.
Run maintenance item U030 and check if CN11-10 on the main
PCB goes low. If not, replace the main PCB.
Reinsert the connector. Also check for continuity within the con-
nector cable. If none, remedy or replace the cable.
Check visually and replace the eject motor if necessary.
Run maintenance item U030 and check if the eject motor oper-
ates when CN16-B11, CN16-B12, CN16-B13 and CN16-B14 on
the main PCB go low. If not, replace the eject motor.
Run maintenance item U031 and turn the eject switch on and off
manually. Replace the switch if indication of the corresponding
switch on the operation panel is not displayed in reverse.
Check procedures/corrective measures
2BH/J-3
1-5-51
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