
2A3/4
3-6-75
(6)
The toner
feed motor
does not op-
erate.
(7)
The paper
conveying
section fan
motor does
not operate.
(8)
Cooling fan
motor 1 does
not operate at
all or does not
turn at full
speed.
(9)
Cooling fan
motor 2 does
not operate at
all or does not
turn at full
speed.
Broken toner feed
motor coil.
Poor contact in the
toner feed motor
connector termi-
nals.
Defective engine
PCB.
Broken paper con-
veying section fan
motor coil.
Poor contact in the
paper conveying
section fan motor
connector termi-
nals.
Defective engine
PCB.
Broken cooling fan
motor 1 coil.
Poor contact in the
cooling fan motor 1
connector termi-
nals.
Defective engine
PCB.
Broken cooling fan
motor 2 coil.
Poor contact in the
cooling fan motor 2
connector
terminals.
Defective engine
PCB.
Check for continuity across the coil. If none,
replace the toner feed motor.
Reinsert the connector. Also check for
continuity within the connector cable. If
none, remedy or replace the cable.
Run maintenance item U135 and check if
drive pulse signal is output across CN2-A5
and CN2-A6 on the engine PCB. If not,
replace the engine PCB.
Check for continuity across the coil. If none,
replace the paper conveying section fan mo-
tor.
Reinsert the connector. Also check for
continuity within the connector cable. If
none, remedy or replace the cable.
Run maintenance item U030. If 24 V DC is
always present at CN8-B7 on the engine
PCB, replace the engine PCB.
Check for continuity across the coil. If none,
replace cooling fan motor 1.
Reinsert the connector. Also check for
continuity within the connector cable. If
none, remedy or replace the cable.
Run maintenance item U030 and check if
CN3-B4 on the engine PCB goes low. If not,
replace the engine PCB.
Check for continuity across the coil. If none,
replace cooling fan motor 2.
Reinsert the connector. Also check for
continuity within the connector cable. If
none, remedy or replace the cable.
Run maintenance item U030 and check if
CN3-B6 on the engine PCB goes low. If not,
replace the engine PCB.
Problem
Causes
Check procedures/corrective measures
Summary of Contents for Ri 4230
Page 3: ...SERVICE MANUAL Ri 4230 5230 ...
Page 13: ...4230 5230 S M MCA THEORY AND CONSTRUCTION SECTION I I Theory and Construction Section ...
Page 14: ...1 1 5 2A3 4 CONTENTS 1 1 Specifications 1 1 1 Specifications 1 1 1 ...
Page 100: ...4230 5230 S M MCA ELECTRICAL SECTION II II Electrical Section ...
Page 119: ......
Page 138: ......
Page 159: ...4230 5230 S M MCA III Set Up and Adjustment Section III SET UP AND ADJUSTMENT SECTION ...
Page 448: ...2A3 4 3 6 3 25 Toner scatters at the leading edge of the image See page 3 6 17 ...