Exit Chute Fan Failure Rap - Xerox Phaser 790 Service Manual

010-359 Exit Chute Fan Failure RAP

The Exit Chute Fan has failed to operate correctly. An Exit Chute Fan rotation error has been
declared.
Initial Actions
Ensure that there are no obstructions or physical conditions that might inhibit normal fan oper-
ation.
Procedure
Access the Digital Output (DO) test from the Control Panel. Enter code [85]. Press the Item/
Enter button. The Exit Chute Fan rotates.
Y N
+24VDC is measured between P 161-3 and frame ground (DC Common).
Y N
Go to Flag 1. Check for an open circuit or a short circuit to ground. Repair or replace
the Main Harness (PL 11.1) as required. If the wiring is OK, replace the MCU PWB
(PL 11.2).
Go to Flag 3. Check for an open circuit. Repair or replace the Main Harness (PL 11.1) as
required. If the wiring is OK, replace the Exit Chute Fan (PL 9.2).
The Fault Code is still present or re-occurs.
Y N
The problem may be intermittent. Go to Figure 1. Check for loose or damaged connec-
tions or damaged wires. Also check for continuity. If the wiring is OK, replace the Exit
Chute Fan (PL 9.2). If the problem persists, replace the MCU PWB (PL 11.2).
+5VDC is measured between P 161-2 and frame ground (DC Common).
Y N
Go to Flag 2. Check for an open circuit. Repair or replace the Main Harness (PL 11.1) as
required. If the wiring is OK, replace the MCU PWB (PL 11.2).
Replace the Exit Chute Fan (PL 9.2).
Status Indicator RAPs
010-359
10/00
2-176
Initial Issue
Phaser 790/DocuColor 2006