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2A3/4
3-5-7
Defective side
registration mo-
tor.
Defective side
registration
home position
switch.
Poor contact of
the connector
terminals.
Malfunction of
the side regis-
tration guides.
Poor contact of
the connector
terminals.
Defective paper
feed motor ro-
tation control
circuit.
Defective drive
transmission
system.
Poor contact of
the desk drive
motor connec-
tor terminals.
Defective desk
drive motor ro-
tation control
circuit.
Side registration motor
problem
• A problem where the side
registration home position
switch does not turn off af-
ter the side registration
motor has turned 30 steps
or the switch does not turn
on after the motor has
turned 265 steps is de-
tected twice in succession.
(The first time, the copier
indicates that the duplex
unit is not inserted cor-
rectly, requesting the user
to open and reinsert the
duplex unit. After the sec-
ond detection, the copier
enters partial operation
control.)
Paper feed motor problem
• PFM LOCK signal remains
high for 1 s, 1 s after the
paper feed motor has
turned on.
Desk drive motor prob-
lem*
3
• DDM LOCK signal remains
high for 1 s, 2 s after the
desk drive motor has
turned on.
Check for continuity across
the coil. If none, replace the
side registration motor.
Check if CN9-12 on the en-
gine PCB goes high when the
side registration home position
switch is on and goes low
when the switch is off. If not,
replace the switch.
Reinsert the connector. Also
check for continuity within the
connector cable. If none, rem-
edy or replace the cable.
Check if the side registration
guides operate smoothly. If
not, repair.
Reinsert the connector. Also
check for continuity within the
connector cable. If none, rem-
edy or replace the cable.
Replace the paper feed motor.
Check if the rollers and gears
rotate smoothly. If not, grease
the bushings and gears.
Check for broken gears and
replace if any.
Reinsert the connector. Also
check for continuity within the
connector cable. If none, rem-
edy or replace the cable.
Replace the desk drive motor.
Code
Contents
Remarks
Causes
Check procedures/
corrective measures
C220
C230
C231
*3: Optional for 42 ppm only.
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 ...