[zw9612]

3-393 EPC Fan 1 Fail RAP
Description
Fault Code 3-393 indicates that the IOT PWB has detected an irregularity in rotation rate of EPC Fan 1.

Initial Action
Refer to BSD 3.4 in the following procedure

Procedure
PO/PO the Machine

Fault Code 3-393 is still declared.
Yes No Unanswered

If an intermittent condition is suspected, inspect and reseat connectors P/J 654 and J382. If the fault persists, go to OF2 Intermittent Fault RAP.

+12 VDC is measured between J382-1 and J382-4 EPC Fan 1 Power Input.
Yes No Unanswered

Go to the LVPS A +12 VDC RAP.

+5 VDC is measured between J655-10 and GND.
Yes No Unanswered

Disconnect P/J655.

+5 VDC is measured between P655-10 and GND.
Yes No Unanswered

Replace the System PWB ( PL 19.2).

Perform the following:

Check the wire at Flag 1 in BSD 3.4 for a short circuit.

Replace the EPC Fan 1 ( PL 19.7).

+5 VDC is measured between J382-2 and GND.
Yes No Unanswered

Perform the following:

Replace the EPC Fan 1 ( PL 19.7).

Replace the System PWB ( PL 19.2).

Replace the Motherboard PWB Assembly ( PL 19.2).

Perform the following:

Go to Flag 2 in BSD 3.4 and check for an open circuit.

Replace the EPC Fan 1 ( PL 19.7).

Replace the System PWB ( PL 19.2).

该风扇位系统模块放置硬盘的位置。

[zw9612]

图片好难弄，只能这样子上传附件了。