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

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168 Phaser 5400 Laser Printer Service Guide
RAP 66 Pre-Registration Sensor
.
Table 96 Pre-Registration Sensor Troubleshooting Procedure
Step Actions and Questions Yes No
1
PRE-REGISTRATION SENSOR ACTUATOR
1. Open the 500-Sheet Feeder Rear Cover.
2. Manually actuate and deactuate the Pre-Registration
Sensor Actuator.
Does the Pre-Registration Sensor Actuator move
smoothly?
Go to
Step 2. Replace the
Pre-
Registration
Sensor
Actuator
[RRP 11.21,
page 351 ].
2 PRE-REGISTRATION SENSOR
1. Enter Diagnostics mode.
2. From the Main Menu, select Component Test / Sensor
Input / press [4] to start, [0] to stop.
3. Press and release the Pre-Registration Sensor
Actuator.
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 3.
3 P133-7 and P133-9 VOLTAGE MEASUREMENT
1. Switch printer power OFF.
2. Remove the 500-Sheet Feeder Left Cover [RRP 11.3,
page 330 ].
3. Disconnect P/J133 from the Feeder Board.
4. Switch printer power ON.
5. Measure the voltage between P133-7 and frame
ground, the between P133-9 and frame ground.
Do both voltages m3.2 VDC?
Go to
Step 4. Replace the
Feeder
Board
[RRP 11-7,
page 334 ].
4 “YES” FROM STEP 4 ABOVE
1. Switch printer power OFF.
2. Reconnect P/J133.
3. Switch printer power ON.
4. Measure the voltage between P/J133-9 and frame
ground as you actuate and deactuate the
Pre-Registration Sensor Actuator.
Does the voltage m3.2 VDC when
deactuated and 0.0 VDC when actuated?
Go to
Step 5. Check for
continuity
between
P/J133 and
P/J13P, then
between
P/J13P and
P/J13C.
Repair or
replace as
necessary. If
harness
checks OK,
replace the
Pre-Regis-
tration
Sensor
[RRP 11.21,
page 351 ].
5 “YES” FROM STEP 4 ABOVE
With Paper in the tray and the tray inserted into the
500-Sheet Feeder, measure the voltage between
P/J132-7 and frame ground as you actuate and
deactuate the Pre-Registration Sensor.
Does the voltage m2.76 VDC when
deactuated and +3.2 VDC when actuated?
Go to
Step 6. Replace the
Feeder
Board
[RRP 11-7,
page 334 ].