09/03
2-107
DC 3535/2240/1632, WC M24
6-371
Status Indicator RAPs
Initial issue
6-371 Exposure Lamp
Open circuit of the Lamp was detected.
Procedure
Enter dC330 [006-002]. Press Start. The Exposure Lamp illuminates.
YN
Switch off the power. Remove the Platen Glass (REP 6.2) and the IPS Cover (PL 18.3).
Switch the power on. (Refer to Figure 1.) There is +24VDC from P/J724-3 on the IIT/
IPS PWB to ground (-).
YN
There is +24VDC from P/J724-1 to P/J724-4 on the IIT/IPS PWB.
YN
Replace the IIT/IPS PWB (PL 18.3).
Replace the Lamp Wire Harness (PL 18.6).
If the problem continues, replace the Lamp Ballast PWB (PL 18.6).
If the problem continues, replace the IIT/IPS PWB (PL 18.3).
Enter dC 330 [006-002] and select Start. The voltage at P/J724-3 drops to approxi-
mately 7.5 VDC.
YN
Replace the IIT/IPS PWB (PL 18.3).
Replace the Exposure Lamp (PL 18.6).
If the problem continues, replace the Lamp Wire Harness (PL 18.6).
If the problem continues, replace Lamp Ballast PWB (PL 18.6).
Check the following:
• The White Reference Strip, under the frame that is below the Registration Edge, for
excessive contamination (REP 6.13).
• The optical light path for contamination.
If the Strip and optics are clean, replace the Exposure Lamp (PL 18.6).
If the problem continues, replace the Lamp Ballast PWB (PL 18.6).
If the problem continues, replace the IIT/IPS PWB (PL 18.3).
Figure 1 6-371 RAP Circuit Diagram - Exposure Lamp
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