Table 85 Turn Roller Clutch Assembly Troubleshooting Procedure - Xerox 5400N - Phaser B/W Laser Printer Service Quick Reference Manual

RAP 55 Turn Roller Clutch Assembly
Table 85 Turn Roller Clutch Assembly Troubleshooting Procedure
Step Actions and Questions
PROCEDURE
1
1. Enter Diagnostics mode.
2. From the Main Menu, select Component Test / Turn
Roll Clutch / press [4] to test, [0] to stop.
Can you hear the Turn Roller Clutch energize?
"NO" FROM STEP 1 ABOVE
2
1. Switch printer power OFF.
2. Remove the Left Side Cover [RRP 1.1,
remove the Print Engine Controller Board Cover
[RRP 8.5,
3. Disconnect P/J12 on the Print Engine Controller
Board.
4. Measure the resistance between pins 10 and 11 on
the disconnected plug.
Is the resistance approximately 170 to
185 ohms?
3 "NO" FROM STEP 2 ABOVE
1. Remove the MBF Assembly.
2. On the MBF Assembly, measure the resistance
between P121-7 and P121-8.
Is the resistance approximately 170 to
185 ohms?
4 TURN ROLLER CLUTCH RESISTANCE
1. Remove the MBF Gear Cover.
2. Disconnect the Turn Roller Clutch Assembly in-line
connector (P/J124).
3. Measure the resistance of the clutch.
Is the resistance approximately 170 to
185 ohms?
5 "YES" FROM STEP 2 ABOVE
1. Switch printer power ON.
2. Measure the voltage between P/J12-10 on the Print
Engine Controller Board and frame ground.
Is the voltage +24 VDC?
6 "NO" FROM STEP 5 ABOVE
Measure the voltage between P/J16-9 and frame
ground.
Is the voltage +24 VDC?
Phaser 5400 Laser Printer Service Guide
.
page 310].
Yes
Go to
Step 8.
Go to
Step 5.
page 250] and
Repair or
replace the
MBF
Harness
[PL 9.1,
page
Repair or
replace the
MBF Combo
Harness
[PL 4.2,
page
Go to
Step 7.
Replace the
Print Engine
Controller
Board
[RRP 8.5,
page
No
Go to
Step 2.
Go to
Step 3.
Go to
Step 4.
404].
Replace the
Turn Roller
Clutch
Assembly
[RRP 2.3,
394]. page 262].
So to Step 6.
Replace the
LVPS
[RRP 8.6,
page 312].
310].
145