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COPYRIGHT © 2002 CANON INC.
2000 2000 2000 2000
NM-PDL REV.0 JULY 2002
CHAPTER 4 SERVICE PROCEDURE
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b. TO REPLACE THE BACK PANEL FAN
1. Position the fan on the inside of the back panel so that the mounting holes line up with
the four holes on the chassis (see F04-405-02 on page 4-38).
An arrow on the side of the fan indicates the airflow direction. Make sure the fan is posi-
tioned so that the arrow faces the bottom of the chassis and points toward the back
panel. The fan should blow air out of the back of the chassis when the system is reas-
sembled and powered on.
2. Attach the fan to the chassis using the snap rivets you removed earlier.
3. Connect the fan cable to the motherboard connector FAN2 (see F04-405-02 on page 4-
38).
4. Reassemble the iR-M2 (see page 4-13) and verify its functionality (see the connection
verification steps described on page 4-15).
5. Make sure the fan vent on the back panel is emitting air. If the fan vent is not emitting
air, the fan is oriented incorrectly.
4.5.3 Power Supply
The fan-cooled 200-watt power supply has an automatic input voltage selection circuit.
The input voltages are 90-135VAC and 180-265VAC.
a. Checking voltages
You can check power supply functionality using a multimeter at the following locations
on the power supply:
• Connector that supplies power to the motherboard
• Connector that supplies power to the HDD
• Connector that supplies power to the CD-ROM drive
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