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14D Exposure Lamp Failure RAP (32-55 ppm)
The exposure lamp does not light, there is no automatic gain control signal.
WARNING
Switch off the electricity to the machine, GP 14. Disconnect the power cord from the
customer supply while performing tasks that do not need electricity. Electricity can
cause death or injury. Moving parts can cause injury.
WARNING
Take care, a hazardous voltage is present at the output of the exposure lamp inverter.
Electricity can cause death or injury.
Procedure
Go to Flag 2. Check the following voltages at P/J135 on the power distribution PWB.
•
+24V between pins 1 and 3.
•
+24V between pins 2 and 4.
The voltages are good.
Y
N
Go to 01B 0V distribution RAP, refer to the 24V return and 01G +24V Distribution RAP.
Remove the CVT glass and document glass, REP 14.6A.
Remove the PWB cover, 3 screws, PL 14.25 Item 1.
Re-install the scanner top cover and GUI, but do not install the screws. Re-connect the power
cord, switch on the machine, GP 14.
Go to Flag 2. Check for the following voltages at P/J455 on the scanner PWB.
•
+24V between pins 1 and 2.
•
+24V between pins 3 and 4.
The voltages are good.
Y
N
Check the harness between P/J135 and P/J455. Repair the harness, REP 1.2, or install
a new harness, PL 14.25 Item 13.
Enter the dC330 output code 14-005. The exposure lamp illuminates.
Y
N
WARNING
Do not install a fuse of a different type or rating. Installing the wrong type or rating
of fuse can cause overheating and a risk of fire.
Check the fuse, Figure 1. Refer to REP 14.2A, to remove the fuse. The fuse is good.
Y
N
Install a new fuse, PL 14.25 Item 11. Re-install the scanner top cover and GUI, but
do not install the screws. Switch on the machine, GP 14. Enter the dC330 output
code 14-005. The new fuse fails.
Y
N
The lamp is lit.
Y
N
Go to Flag 1. Check the lamp ribbon harness between P/J456 and P/
J463 for open or short circuits. The lamp ribbon harness is good.
Y
N
Install a new lamp ribbon harness, PL 14.25 Item 10.
A
B
C
D
E
WorkCentre 5687 Family
A
B
C
D
E
Install new components in the following order:
•
Exposure lamp, PL 14.25 Item 9.
•
Exposure lamp inverter, PL 14.25 Item 12.
Perform ADJ 14.1A Optics Cleaning Procedure.
Perform ADJ 14.1A Optics Cleaning Procedure.
Install new components in the following order:
•
Exposure lamp, PL 14.25 Item 9 and exposure lamp fuse, PL 14.25 Item 11.
•
Exposure lamp inverter, PL 14.25 Item 12 and exposure lamp fuse, PL 14.25
Item 11.
Perform ADJ 14.1A Optics Cleaning Procedure.
Switch on the copier. Go to Flag 1. Disconnect P/J456 and check the following voltages
at P/J456 on the scanner PWB:
•
+24V between pins 1 and 7.
•
+24V between pins 2 and 8.
•
+24V between pins 3 and 9.
The voltages are good.
Y
N
Install a new scanner PWB, PL 14.25 Item 4.
Re-connect P/J456. Disconnect P/J463. Check the following voltages on the inverter
end of the harness.
•
+24V between pins 1 and 7.
•
+24V between pins 2 and 8.
•
+24V between pins 3 and 9.
The voltages are good.
Y
N
Install a new lamp ribbon harness, PL 14.25 Item 10.
Re-connect P/J463. +10V is available at PJ/463 pin 4.
Y
N
Install a new exposure lamp inverter, PL 14.25 Item 12.
+10V is available at PJ/456 pin 6.
Y
N
Install a new lamp ribbon harness, PL 14.25 Item 10.
Go to Flag 1. Connect a test meter between pins 6 and 1 of P/J456 on the scanner PWB.
Enter the dC330 output code 14-005. The voltage changes from +10V to 0V when the
code is entered.
Y
N
Install new components in the following order:
•
Scanner PWB, PL 14.25 Item 4.
•
Scanner, PL 14.20 Item 1.
A
F
August 2007
2-693
Status Indicator RAPs
14D
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