Diagnostic Information 2-9
4400-001
CIS Assembly Service Check
The CIS lamp does not light when scanning is in process or during
the (POST) sequence.
FRU Action
1 CIS Assembly If light does not come on during the
scanning process, check connector
CN13 on the system board. If the
connection is okay, check for a
voltage reading of approximately 4
volts from ground to CN13-2 pin. If
voltage is correct, replace the CIS
assembly. Go to the “CIS (Contact
Image Sensor) Removal” on
page 4-7. If voltage is incorrect,
replace the system board. Go to the
“System Board Removal” on
page 4-21.
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