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

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Phaser 5400 Laser Printer Service Guide 143
7 “YES” FROM STEP 6 ABOVE
1. Reconnect P/J138 to the Feeder Board.
2. Switch printer power ON.
3. Measure the voltages in Table 84 on P/J132-5 (Tray 2)
or P/J132-6 (Tray 3) as you actuate the switches.
Are all voltages correct?
Go to
Step 8. Replace the
Feeder
Board
[RRP 11.7,
page 334 ].
8 “YES” FROM STEP 7 ABOVE
1. Switch printer power OFF.
2. Remove the Left Side Cover [RRP 1.1, page 250 ] and
the Print Engine Controller Board Cover [RRP 8.5,
page 310 ].
3. Switch printer power ON.
4. Measure the voltages on P/J13-5 (Tray 2) or P/J132-6
(Tray 3) as you actuate the switches (see Table 84).
Are all voltages correct?
Replace the
Print Engine
Controller
Board
[RRP 8.5,
page 310 ].
Go to
Step 12.
9
“YES” FROM STEP 5 ABOVE
1. Switch printer power OFF.
2. Remove the Left Side Cover [RRP 1.1, page 250 ].
3. Disconnect P/J20 from the Print Engine Controller
Board.
4. Check for continuity between the following pins, of the
disconnected plug, while pressing the switches:
■
P20-7 and P20-5 when pressing SW1(Top)
■
P20-6 and P20-5 when pressing SW2
■
P20-4 and P20-5 when pressing SW3
■
P20-3 and P20-5 when pressing SW4 (Bottom)
Is there continuity in each case?
Replace the
Print Engine
Controller
Board
[RRP 8.5,
page 310 ].
Check for
pin-to-pin
continuity of
the Size
Sensor
Harness.
Repair or
replace as
necessary. If
the harness
OK, replace
the Size
Sensor
Switch
[PL 3.1,
page 390 ].
10 “YES” FROM STEP 1 ABOVE
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 2000-Sheet Feeder A4 Paper
Sensor.
Does the LCD counter increment each time you
press and release the sensor actuator?
Replace the
Print Engine
Controller
Board
[RRP 8.5,
page 310 ].
Go to
Step 11.
11 “NO” FROM STEP 10 ABOVE
1. Switch printer power OFF.
2. Disconnect P/J604 from the 2000-Sheet Feeder
Board.
3. Check for continuity between pins 5 and 6 as you
actuate and deactuate the Paper Size Sensor.
Does the ohmmeter measure continuity when
the sensor is actuated and infinity when
deactuated?
Replace the
2000-Sheet
Feeder
Board
[RRP 12.8,
page 360 ].
Replace the
2000-Sheet
Feeder A4
Paper
Sensor
[RRP 12.10,
page 362 ].
Table 83 Size Switch Troubleshooting Procedure (cont'd.)
Step Actions and Questions Yes No