Power Supply Faults - Epson MR Series Technical Reference Manual

Possible Short in System
❏ Follow the procedures below.
Note:
In cases where the power supply short circuit protection shuts the power supply down, power will not
come back on if the power is turned on immediately after being turned off. It is necessary to wait for a
period of at least fifteen seconds before turning the power back on.
Step Corrective Procedure
1 Remove all the devices listed below.
• All peripheral devices connected to IM-800 interface board.
• PCI card inserted in PCI slot.
2 Turn on the IM-800 and confirm power is being supplied. If it is, reinstall the removed devices one
at a time, while confirming power supply status.
3 If the power described in step 2 is not being supplied, remove the following devices (while step 1
devices are still detached).
• HDD
• CD-ROM
• FDD
4 Turn on the IM-800 and confirm power is being supplied. If it is, reinstall the removed devices one
at a time while confirming power supply status.
5 If no power is supplied in step 4, replace all circuit boards and cable assemblies one by one with
items that are known to operate normally from the state when all devices are removed in step 3,
and check whether power is supplied.

Power Supply Faults

Power Supply Fails
❏ Follow the procedures below.
1. Visually check that the power supply fan is functioning at normal speed.
2. Check cable connectors of the power supply, and the internal connectors of the IM-800.
3. Proceed to the section, "Procedures for Testing the Power Supply," on page 8-23, and
test the power supply.
Rev. I
MR Series Technical Reference Manual
Troubleshooting 8-17