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

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76 Phaser 5400 Laser Printer Service Guide
RAP 17 Insert MBF
The Multi-sheet Bypass Feeder (MBF) is extended and is not in the home position.
Table 37 Insert MBF Troubleshooting Procedure
Step Actions and Questions Yes No
1 PROCEDURE
Extend and close the MBF.
Does the error code still appear?
Go to
Step 2. Problem
solved.
2 MBF HOME SWITCH INSPECTION
1. Extend the MBF and inspect the MBF Home Switch.
2. Manipulate the MBF Home Switch Actuator.
Is the MBF Home Switch in good condition and
does the actuator move freely?
Go to
Step 3. Replace the
MBF Home
Switch
[RRP 3.8,
page 282 ].
3 MBF HOME SWITCH TEST
1. Enter Diagnostics mode.
2. From the Main Menu, select Component Test / Sensor
Input / press [4] to start, [0] to stop.
3. Actuate and deactuate the MBF Home Switch.
Does the LCD counter increment each time you
press and release the actuator?
Replace the
Print Engine
Controller
Board
[RRP 8.5,
page 310 ].
Go to Step 4
4 “NO” FROM STEP 4 ABOVE
1. Switch printer power OFF.
2. Remove the Left Side Cover [RRP 1.1, page 250 ] and
the Print Engine Controller Cover [RRP 8.5,
page 310 ].
3. Disconnect P/J20 from the Print Engine Controller
Board.
4. Switch printer power ON.
5. Measure the voltage between P20-1 and frame
ground.
Does the voltage between P20-1 and frame
ground m3.2 VDC?
Go to
Step 5. Replace the
Print Engine
Controller
Board
[RRP 8.5,
page 310 ].
5
“YES” FROM STEP 4 ABOVE
1. Switch print power OFF.
2. Reconnect P/J20 to the Print Engine Controller Board.
3. Switch printer power ON.
4. Measure the voltage between P20-2 and frame
ground as you actuate and deactuate the switch.
Does the voltage m3.2 VDC when the
switch is actuated and 0.0 VDC when the switch
is deactuated?
Replace the
Print Engine
Controller
Board
[RRP 8.5,
page 310 ].
Replace the
MBF Home
Switch
[RRP 3.8,
page 282 ].