Service manual

FrameMaker Ver.5.5E(PC) Di152/Di183 TROUBLESHOOTING
01.09.04
T- 2 5
(3) C004E: Power Supply Cooling Fan Motor malfunction
Relevant Electrical Parts
Power Supply Cooling Fan Motor (M4) Master Board (copier: PWB-A)
Step Check Result Action
1 Power Supply Cooling Fan Motor
(M4) turns when the Power Switch is
turned ON.
NO • Check for overload.
2 The following voltage is supplied to
the Power Supply Cooling Fan Motor
(M4).
<Check Procedure>
Check voltage across a Master Board
(copier: PWB-A) pin and GND when
the Power Switch is turned ON.
• Voltage across PJ19A-1 and GND
DC8 V during rotation at deceler-
ated speed
DC24 V during rotation at full
speed
YES • Change Power Supply Cooling Fan
Motor (M4).
3 The following voltage is supplied to
the Power Supply Cooling Fan Motor
(M4).
<Check Procedure>
Check voltage across a Master Board
(copier: PWB-A) pin and GND when
the Power Switch is turned ON.
• Voltage across PJ19A-3 and GND
DC0 V when energized
NO • Change Power Supply Cooling Fan
Motor (M4).
YES • Change Master Board (copier:
PWB-A).
PWB-A
Master Board
POWER SUPPLY SECTION
Power Supply
Cooling Fan Motor
4022T527AA