Exposure Lamp - Xerox DocuColor 1632 Service Manual

6-371 Exposure Lamp

Open circuit of the Lamp was detected.
Procedure
BSD 6.2 BSD 6.12A
Enter dC330 [006-002]. Press Start. The Exposure Lamp illuminates.
Y N
Switch off the power. Remove the following Platen Glass and the IPS Cover. Switch
on the power.
There is +24VDC between J720-2 (+) on the IIT/IPS PWB and GND (-).
Y N
Remove the DADF and the IIT Top Cover. There is +24VDC between J 702-1 on
the IIT LVPS (+) and GND (-).
Y N
Switch off the power. Disconnect J 702 from the IIT LVPS. Switch on the
power. There is +24VDC between the IIT LVPS P 502-1 (+) and GND (-).
Y N
Check for IIT LVPS On signal from ESS
Check the input power (ACH) to the IIT LVPS.
If no problems are found, replace the IIT LVPS
Check for a short circuit. Refer to the IIT+24VDC wirenet
Check the wires from J 702 on the IIT LVPS to J 720 on the IIT/IPS PWB for an open
or short circuit.
There is +24VDC from J 724-3 on the IIT/IPS PWB to GND.
Y N
There is +24VDC from J 724-1 to J 724-4 on the IIT/IPS PWB.
Y N
Replace the IIT/IPS PWB
Replace the following parts:
Lamp Wire Harness (PL
Lamp Ballast PWB (PL 18.6)
IIT/IPS PWB (PL 18.3)
Enter dC 330 [006-002]. Press Start. The voltage at J 724-3 drops to approximately
7.5 VDC.
Y N
Replace the IIT/IPS PWB (PL
Replace the following parts:
Exposure Lamp (PL 18.6)
Lamp Wire Harness (PL 18.6)
Lamp Ballast PWB (PL 18.6)
Check the following:
Prelaunch Training/Review
DC1632/2240
(PL 18.4)
(PL 18.3)
18.6)
18.3)
ï The White Reference Board on the reverse side of the Platen Glass for excessive con-
tamination
ï The optical light path for contamination
If no problems are found, replace the Lens Kit
If the problem continues, replace the IIT/IPS PWB
If the Exposure Lamp is not brightly lit, replace the Exposure Lamp
If the problem continues, replace the Lamp Ballast PWB
6/02
2-89
(PL 18.4) (REP 6.4) (ADJ 9.6).
(PL 18.3).
(PL 18.6).
(PL 18.6).
Status Indicator RAPs
6-371