A B
(Figure 1): Locate the test point JP1 on the Power Distribution PWB.
Use the test leads from the DMM to connect the two points of JP1
together.
The Exposure Lamp illuminates.
Y N
Replace the Power Distribution PWB (REP 4.1.15).
Replace the Lamp and Motor Cable.
If the problem still exists, replace the Control PWB.
Go to Figure 3, Flag 2 and check the yellow wire for an open circuit to
the Lamp Socket LS1.
The wire has continuity.
Y N
Repair the connection.
Replace the Exposure Lamp (REP 4.1.3).
If the problem still exists, replace the Lamp Ballast Assembly
(REP 4.1.14)
Lamp and
Motor Cable
Figure 2. Control PWB
7356 Scanner
4/97
2-13
1.3 Exposure Lamp RAP
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