Checking Internal Components - Canon FY8-13HR-000 Service Manual

CHAPTER 5 TROUBLESHOOTING

1.4.2 Checking Internal Components

To check the internal components you must open the iR-M1. For an overview of internal
components, see F05-104-02 on page 5-7. Check the following components:
• Circuit boards (UIB, copier interface board, and motherboard)
• Fans (exhaust fan and CPU fan)
• Power switch and power supply
• Hard disk drive
Before you open the iR-M1, be aware of the safety precautions you should
take when handling the iR-M1, and use ESD precautions when handling
printed circuit boards and electronic components. To review the safety pre-
cautions, see "Precautions" on page v.
Use the guidelines in Chapter 4 when shutting down, disassembling, checking, and reas-
sembling the iR-M1.
a. To Check Internal Components
1. Power off and open the iR-M1 (see "Accessing internal components" on page 4-3).
2. Before you touch any components inside the iR-M1 chassis, attach an ESD grounding
strap to your wrist. Discharge any static electricity on your body by touching the metal
back panel of the iR-M1.
3. Inspect the inside of the chassis.
• Check the connections between an option board (if present) and the motherboard. If a
board is loose, reseat it securely in its connector.
• Check the connections between the copier interface board and motherboard. If a
board is loose, reseat it securely in its connector.
• Look for cables that are obviously loose. Reseat each cable firmly. See F04-301-01 on
page 4-9 for an overview of the cables in the iR-M1. Make sure that the power supply
cable, AC power cable, and ground cables are properly connected to the power supply.
• Make sure each connector is properly aligned with its mating connector. If any pins
are offset from each other, the component affected will not function properly.
• Make sure DIMM(s) are properly seated in DIMM slot(s).
4. Reassemble the iR-M1 and verify functionality (see "Restoring functionality after ser-
vice" on page 4-11).
5-6
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