Xerox 5400N - Phaser B/W Laser Printer, Service Quick Reference Manual

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78 Phaser 5400 Laser Printer Service Guide
RAP 18 Close Tray 2 Rear Door
Close Tray 3 Rear Door
The 2000-Sheet Feeder Rear Door is open.
Table 38 2000-Sheet Feeder Cover Open Troubleshooting Procedure
Step Actions and Questions Yes No
1 UPPER REAR COVER INTERLOCK SWITCH
1. Manually open and close the 2000-Sheet Feeder
Upper Rear Cover Assembly.
2. Make certain the Upper Rear Cover actuates the
Interlock Switch.
Does the 2000-Sheet Feeder Upper Rear Cover
Assembly actuate the Interlock Switch?
Go to
Step 2. Reinstall the
Interlock
Switch. If the
bracket is
deformed,
reshape or
replace the
bracket.
2 UPPER REAR COVER INTERLOCK SWITCH
INPUT TEST
1. Enter Diagnostics mode.
2. From the Main Menu, select Component Test / Sensor
Input / press [4] to start, [0] to stop.
3. Open and close the 2000-Sheet Feeder Upper Rear
Cover.
Does the LCD counter increment each time you
open and close the cover?
Replace the
Print Engine
Controller
Board
[RRP 8.5,
page 310 ].
Go to
Step 3.
3 “NO” FROM STEP 3 ABOVE
1. Switch printer power OFF.
2. Remove the 2000-Sheet Feeder Lower Rear Cover
[RRP 12.4, page 356 ].
3. Switch printer power ON.
4. Check the voltage between P/J604-3 and frame
ground as you open and close the Upper Rear Cover.
Does the voltage m3.2 VDC when the
cover is open and 0.0 VDC when the cover is
closed?
Go to
Step 4. Replace the
Upper Rear
Cover
Interlock
Switch
[PL 12.2,
page 420 ].
4 CONTINUITY CHECK
1. Switch printer power OFF.
2. Remove the Left Side Cover [RRP 1.1, page 250 ] and
the Print Engine Controller Board [RRP 8.5,
page 310 ].
3. Disconnect P/J13 from the Print Engine Controller
Board and P/J604 form the 2000-Sheet Feeder
Board.
4. Check for continuity between the pins as follows:
■
P601-1 and P13-1
■
P601-2 and P13-2
■
P601-3 and P13-3
■
P601-4 and P13-13
■
P601-5 and P13-10
■
P601-6 and P13-14
■
P601-7 and P13-15
Is there continuity between all pins measured?
Replace the
Print Engine
Controller
Board
[RRP 8.5,
page 310 ],
or the
2000-Sheet
Feeder
Board
[RRP 12.8,
page 360 ].
Replace the
appropriate
harness.