Service manual

7-13
CHAPTER 7 TROUBLESHOOTING PROCEDURES
Service Call Error (3/7)
Service call
104:Error
Service call
105:Error
Service call
106:Error
Service call
120: ERROR
Service call
121:Error
Service call
122:Error
Service call
123:Error
Service call
124:Error
Service call
126:Error
Service call
127:Error
Service call
131:Error
~
134:Error
Does error reoccur?
Does error reoccur?
Does error reoccur?
1) Is the FAN in the PU unit working?
2) Does the same error occur after
replacement of the FAN motor?
Is cable between PU board and high-
voltage power unit connected
properly?
Is there no improperly connections?
Is fan in low-voltage power supply unit
operating?
Is fan connector connected properly?
Does error reoccur?
Does error reoccur?
Condensation iss likely to occur in
printers carried from the outside. Turn
on the printer again after it is exposed to
room temperature for two hours to half
a day. Does the error reoccur?
Is fan connector connected properly?
Does error reoccur?
Is LED head properly set?
Is the LED head fuse blown out?
Does error reoccur?
Power OFF/ON
Replace PU PCB(PRN)
Power OFF/ON
Replace PU PCB (PRN)
Power OFF/ON
Replace PU PCB (PRN)
Replace the FAN motor.
Replace the PU board (PRX).
Replace the PU board (PRX).
Connect properly.
Check improper connec-
tions for high-voltage.
Replace high-voltage
power supply.
Check connections for
connector of fan.
Replace low-voltage power
supply.
Replace fan motor.
Replace low-voltage power
supply.
Power OFF/ON
Replace the operator panel
PCB (PRP)
Power OFF/ON
Replace the operator panel
PCB(PRN)
Turn on the printer again
after it is left alone.
Replace the operator panel
PCB (PRP)
Connect properly again.
Replace fan motor
Replace PU PCB (PRN)
Install the LED head unit
properly.
Check the LED head fuse.
Change the fuse.
Turn on the power again.
Replace the LED head unit.
(For fuse changing method,
see page 7-67.)
Engine EEPROM
setting check is OK
when power ON. Then
detect read/ write error.
An error detected by
checking, at printer's
power-om, EEPROM
installation.
Abnormal engine
control logic.
PU unit FAN motor
error
High-voltage power
supply I/F error.
Low-voltage power
supply fan error.
Low-voltage power
supply temperature
error.
Abnormal environ-
ment humidty /Not
connected humidity
sensor.
Abnormal environ-
ment temperature.
Condensation in the
printer was detected.
Error detected at the
fuser unit cooling
fan.
LED head fault
detected. (131 = Y,
132 = M, 133 = C,
134 = K)
Yes
Yes
Yes
NO
YES
YES
No
Yes
No
No
Yes
No
Yes
Yes
Yes
Yes
No
Yes
No
No
Yes
Yes
No
Yes
Error DescriptionMessage Cause Solution