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。