Kyocera TASKalfa 7002i Service Manual page 1097

Step Check description
6 Opening and closing the
conveying unit
7 Checking the loop sensor
8 Checking the registration
motor
9 Checking the drive parts
10 Checking the transfer belt
and the drive section
11 Checking the connection
12 Replacing the relay PWB
13 Replacing the feed PWB
14 Replacing the engine PWB The engine PWB is faulty.
Assumed cause
The drawer connector con-
nected to the conveying
unit is not properly con-
nected.
The loop sensor does not
properly operate.
The registration motor
does not properly operate.
The drive from the registra-
tion motor is not properly
transmitted.
Transfer belt is not prop-
erly driving.
The connector is not prop-
erly connected or the wire
is faulty.
The relay PWB is faulty.
The feed PWB is faulty.
7-237
Measures
Open the conveying unit and
close it completely. If the pin
of the drawer connector
between the conveying unit
and the main unit is dirty or
deformed, clean or repair it.
Turn the loop sensor on and
off by a hand and check the
indication at U031 [Regist
Loop Sensor]. If the loop sen-
sor does not properly oper-
ate, clean and reattach it and
reinsert the connector. If not
repaired, replace it.
Execute U030 [Regist]. If the
registration motor does not
properly operate, reattach it
and reinsert the connector. If
not repaired, replace it.
Check if the registration
motor smoothly rotates by a
hand. Then, clean and reat-
tach the drive parts if neces-
sary. If not repaired, replace
them.
If the transfer belt is
deformed, the drive gear is
broken, the bushing is
scraped, replace the transfer
belt unit.
Clean the terminal of the fol-
lowing wire connectors and
reinsert the connectors.
Replace the wire when it has
no continuity.• Loop sensor -
Relay PWB• Registration
motor - Feed PWB• Relay
PWB - Feed PWB• Feed
PWB - Engine PWB
Replace the relay PWB.
Replace the feed PWB.
Replace the engine PWB.
2WA/2NJ/2RK
Reference
Executing
U031
U030 Exe-
cution
Detaching
and reat-
taching the
transfer
belt unit
Wiring dia-
gram
Detaching
and Reat-
taching the
engine
PWB