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

Page: 141 / 503

112 Phaser 5400 Laser Printer Service Guide
RAP 39 Registration Clutch
.
Table 63 Registration Clutch Troubleshooting Procedure
Step Actions and Questions Yes No
1
PROCEDURE
1. Enter Diagnostics mode.
2. From the Main Menu, select Component Test / Reg.
Clutch / press [4] to test, [0] to stop.
Can you hear the Registration Clutch energize?
Go to
Step 8. Go to
Step 2.
2 “NO” FROM STEP 1 ABOVE
1. Switch printer power OFF.
2. Remove the Left Side Cover [RRP 1.1 on page 250 ]
and remove the Print Engine Controller Board Cover
[RRP 8.5 on page 310 ].
3. Disconnect P/J22 on the Print Engine Controller
Board.
4. Measure the resistance between pins 1 and 2 on the
disconnected plug.
Is the resistance approximately 170 to
185 ohms?
Go to
Step 4. Go to
Step 3.
3 “NO” FROM STEP 2 ABOVE
1. Remove the Print Cartridge and the MBF Assembly
[RRP 2.1 on page 259 ].
2. Disconnect P/J222 from the Registration Clutch.
3. Check for pin to pin continuity between P22 and P222.
Is there continuity between both pins?
Replace the
Registration
Clutch
[RRP 4.3 on
page 286 ].
Repair or
replace the
Registration
Clutch
Harness as
necessary
[PL 9.1,
page 404 ].
4 “YES” FROM STEP 2 ABOVE
1. Switch printer power ON.
2. Measure the voltage between P/J22-1 and frame
ground.
Does the voltage between P/J22-1 and frame
ground m24 VDC?
Go to
Step 6. Go to
Step 5.
5 “NO” FROM STEP 4 ABOVE
Measure the voltage between P/J16-9 and frame
ground.
Does the voltage between P/J16-9 and frame
ground m24 VDC?
Replace the
Print Engine
Controller
Board
[RRP 8.5 on
page 286 ].
Replace the
LVPS
[RRP 8.6 on
page 312 ].
6 “YES” FROM STEP 4 ABOVE
1. Switch printer power OFF.
2. Reconnect P/J22.
3. Enter Diagnostics mode.
4. From the Main Menu, select Component Test / Reg.
Clutch.
5. Measure the voltage between P/J22-2 and frame
ground.
6. While watching the voltmeter, press [4].
Does the voltage drop from +24 VDC to 0.0 VDC?
Go to
Step 7. Replace the
Registration
Clutch
[RRP 4.3 on
page 286 ] or
Paper
Transport
Assy
[RRP 4.1 on
page 283 ].