Ccd Agc - Xerox DocuColor 2240 Service Manual

15-380 CCD AGC

Automatic Gain Control (AGC) for CCD Channel 1 red failed.
Initial Actions
• Verify that the Platen Glass is installed correctly
• Verify that NVM location 715-400 = 1
Procedure
Switch the power off, then on. The fault code is still present.
Y N
Intermittent faults can be caused by condensation on the optics components. If the
machine is in a cold location, allow in to warm up for an extended period before operation.
If the problem is persistent, replace the Exposure Lamp
Enter dC330 [6-002] and press Start. The Exposure Lamp illuminates.
Y N
Go to the 6-371 RAP.
The Exposure Lamp illumination is bright and steady.
Y N
Go to P/J722 (Figure 2) and P/J724 (Figure
circuit.
Verify that P/J742 on the Lamp Ballast PWB and
If the wires and connectors are good, replace the Exposure Lamp
If the problem continues, replace the Lamp Ballast PWB
If the problem continues, replace the IIT/IPS PWB
Remove the Platen Glass (REP 6.2). The white reference strip on frame under the Regis-
tration Gate is clean and undamaged.
Y N
Clean the white reference strip.
Go to P/J721 (Figure 3) and check the flat cable on the IIT/IPS PWB and
PWB for damage. Reseat the flat cable.
If the problem continues, replace the Lens Kit
If the problem continues, replace the IIT/IPS PWB
Initial issue
DC 3535/2240/1632, WC M24
(REP 6.2).
(PL 18.6).
1) and check the wires for an open or short
P/J724 on the IIT/IPS PWB are seated.
(PL 18.6).
(PL 18.6).
(PL 18.3).
P/J741 on the CCD
(PL 18.4).
(PL 18.3).
Figure 1 15-380 RAP Circuit Diagram - Lamp Ballast
Figure 2 15-380 RAP Circuit Diagram - IPS Fan
09/03
2-305
Status Indicator RAPs
15-380