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2DA/2DB
1-5-36
(12)
The drawer paper
feed clutch* doesnot
operate.
Broken drawer paper feed-
clutch coil.
Check for continuity across the coil. If none, replace the drawer
paper feed clutch.
Poor contact in the drawer-
paper feed clutch connec-
torterminals.
Reinsert the connector. Also check for continuity within the con-
nector cable. If none, remedy or replace the cable.
Defective engine PCB.
Run maintenance item U032 and check if YC8-3 on the drawer
main PCB goes low. If not, replace the drawer main PCB.
(13)
The cleaning lamp
does not turn on.
Poor contact in the cleaning
lamp connector terminals.
Reinsert the connector. Also check for continuity within the con-
nectorcable. If none, remedy or replace the cable.
Defective cleaning lamp.
Check for continuity. If none, replace the cleaning lamp.
Defective engine PCB.
If the cleaning lamp turns on when YC3-7,8 on the engine PCB is
held low, replace the engine PCB.
(14)
The exposure lamp-
does not turn on.
Poor contact in the expo-
sure lamp connector termi-
nals.
Reinsert the connector. Also check for continuity within the con-
nector cable. If none, remedy or replace the cable.
Defective inverter PCB.
Run maintenance item U061 and check if the exposure lamp turns
on with YC1-1 and YC1-6 on the inverter PCB go low. If not,
replace the inverter PCB.
Defective engine PCB.
Run maintenance item U061 and check if YC17-1 and YC17-6 on
the engine PCB goes low. If not, replace the engine PCB.
(15)
The exposure lamp-
does not turn off.
Defective inverter PCB.
If the exposure lamp does not turn off with YC1-1 and YC1-6 on
the inverter PCB high, replace the inverter PCB.
Defective engine PCB.
If YC17-1 and YC17-6 on the engine PCB are always low, replace
the engine PCB.
(16)
The fixing heater
does not turn on
(C6000).
Broken wire in fixing heater
M or S.
Check for continuity across each heater. If none, replace the
heater M or S.
Fixing thermostat triggered. Check for continuity across thermostat. If none, remove the cause
and replace the thermostat.
(17)
The fixing heater
does not turn off.
Broken fixing thermistor
wire.
Measure the resistance. If it is
∞
Ω
, replace the fixing thermistor.
Dirty sensor part of the fix-
ing thermistor.
Check visually and clean the thermistor sensor parts.
(18)
Main charging is not-
performed.
Broken main charger wire.
See page 1-5-27.
Leaking main charger hous-
ing.
Poor contact in the high
voltage PCB connector ter-
minals.
Defective engine PCB.
Defective high- voltage
PCB.
*: 20 ppm model only.
Problem
Causes
Check procedures/corrective measures
Содержание KM-1650
Страница 1: ...SERVICE MANUAL Published in June 05 2DA70763 Revision 3 KM 1650 2050 ...
Страница 4: ...This page is intentionally left blank ...
Страница 10: ...This page is intentionally left blank ...
Страница 248: ...2DA 2DB 1 2 3 2 Figure 2 3 2 Power source PCB silk screen diagram 220 240 V AC 120 V AC ...
Страница 265: ...2DA 2DB 1 2 3 19 Figure 2 3 10 Operation unit PCB silk screen diagram ...
Страница 280: ......