Table 87 Mbf Feed Solenoid Troubleshooting Procedure - Xerox 5400N - Phaser B/W Laser Printer Service Quick Reference Manual

RAP 57 MBF Feed Solenoid
Table 87 MBF Feed Solenoid Troubleshooting Procedure
Step Actions and Questions
PROCEDURE
1
1. Enter Diagnostics mode.
2. From the Main Menu, select Component Test / MBF
Feed Sol / press [4], [0] to stop.
Can you hear the solenoid energize?
"NO" FROM STEP 1 ABOVE
2
1. Switch printer power OFF.
2. Remove the Left Side Cover [RRP 1.1,
the Print Engine Controller Board Cover [RRP 8.5,
page 310].
3. Disconnect P/J12 on the Print Engine Controller
Board.
4. Measure the resistance between pins 14 and 15 on
the disconnected plug.
Is the resistance approximately 90 ohms?
"NO" FROM STEP 2 ABOVE
3
1. Remove the MBF Assembly.
2. On the MBF Assembly, measure the resistance
between P121-11 and P121-12.
Is the resistance approximately 90 ohms?
4 "NO" FROM STEP 3 ABOVE
1. Remove the MBF Gear Cover.
2. Disconnect the MBF Feed Solenoid in-line connector
(P/J122).
3. Measure the resistance of the solenoid.
Is the resistance approximately 90 ohms?
"YES" FROM STEP 2 ABOVE
5
1. Switch printer power ON.
2. Measure the voltage between P/J12-14 on the Print
Engine Controller Board and frame ground.
Is the voltage +24 VDC?
"NO" FROM STEP 5 ABOVE
6
Measure the voltage between P/J16-9 and frame
ground.
Is the voltage +24 VDC?
Phaser 5400 Laser Printer Service Guide
.
page
Yes
Go to
Step 8.
Go to
Step 5.
250] and
Repair or
replace the
MBF Combo
Harness
[PL 4.2,
page 394].
Repair or
replace the
MBF Combo
Harness
[PL 4.2,
page 394].
Go to
Step 7.
Replace the
Print Engine
Controller
Board
[RRP 8.5,
page 310].
No
Go to
Step 2.
Go to
Step 3.
Go to
Step 4.
Replace the
MBF Feed
Solenoid
[RRP 2.8,
page 269].
Go to
Step 6.
Replace the
LVPS
[RRP 8.6,
page 312].
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