4 power supply – Advantech HMI-640S User Manual
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HMI-640S User's Manual
3.4 Power Supply
To repair or replace the power supply:
1. Verify that the power source to the HMI-640S has been disconnect-
ed.
2. Open the rear cover. (See Section 3.1)
3. Remove the four screws attaching the power supply to the CPU
board.
4. Disconnect the cable from the power supply.
5. Replace the power supply and reassemble.
Warning: Shut off power to the HMI-640S before attempting to
repair the power supply. Simply switch off the power
and unplug the unit.
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