Electric Problems - Kyocera Copystar CS-2035 Service Manual

2HA/2HB
1-4-4

Electric problems

Problem
(1)
The machine does
not operate when the
power switch is
turned on.
(2)
The drive motor, reg-
istration motor or exit
motor does not oper-
ate
(3)
The scanner motor,
cooling fan motor 1
or 2 does not oper-
ate.
(4)
The paper feed
clutch or MP paper
feed clutch does not
operate.
(5)
The cleaning lamp
does not turn on.
1-4-26
Causes
No electricity at the power
outlet.
The power cord is not
plugged in properly.
The front cover or left cover
is not closed completely.
Broken power cord.
Defective power switch.
Blown fuse in the power
source PWB.
Defective front or left cover
safety switch.
Defective power source
PWB.
Poor contact in the connec-
tor terminals.
Broken the gear.
Defective the motor.
Defective engine PWB.
Broken the motor coil.
Poor contact in the connec-
tor terminals.
Broken the clutch coil.
Poor contact in the connec-
tor terminals.
Defective engine PWB.
Poor contact in the connec-
tor terminals.
Defective cleaning lamp.
Defective engine PWB.
Check procedures/corrective measures
Measure the input voltage.
Check the contact between the power plug and the outlet.
Check the front cover and left 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 each switch. If none,
replace the switch.
With AC present, check for 24 V DC at YC1-1 and 5 V DC at YC1-
7 on the power source PWB. If none, replace the power source
PWB.
Reinsert the connector. Also check for continuity within the con-
nector cable. If none, remedy or replace the cable.
Check visually and replace the gear if necessary.
Run maintenance item U030 and check if the motor operates
when the following terminals on the PWB goes low. If not, replace
the corresponding motor.
Drive motor: YC7-5 on the engine PWB
Registration motor: YC2-1,2,4,5 on the registration motor PWB
Exit motor: YC14-1,2,3,4 on the engine PWB
Run maintenance item U030 and check if following terminals on
the engine PWB goes low. If not, replace the engine PWB.
Drive motor: YC7-5 on the engine PWB
Registration motor: YC4-4 on the engine PWB
Exit motor: YC14-1,2,3,4 on the engine PWB
Check for continuity across the coil. If none, replace the motor.
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 clutch.
Reinsert the connector. Also check for continuity within the con-
nector cable. If none, remedy or replace the cable.
Run maintenance item U032 and check if following terminals on
the engine PWB goes low. If not, replace the engine PWB.
Paper feed clutch: YC8-3 on the engine PWB
MP paper feed clutch: YC8-5 on the engine PWB
Reinsert the connector. Also check for continuity within the con-
nector cable. If none, remedy or replace the cable.
Check for continuity. If none, replace the cleaning lamp.
If the cleaning lamp turns on when YC3-12,13 on the engine PWB
is held low, replace the engine PWB.