Diagnostic information 2-249
7558-xxx
843.26 Scanner controller card assembly failure 2
844.00 Exposure lamp failure
844.01 White reference/exposure lamp illumination failure
Step Action and questions Yes No
1 Check the connection of each
scanner controller card assembly
connector.
Is each connector of scanner
controller card assembly
connected properly?
Go to step 2. Connect each connector of
scanner controller card assembly
properly.
2
Perform a POR.
Does the error remain when the
power is turned off/on?
Replace the scanner controller
PCBA.
Go to “Scanner controller
PCBA removal” on page 4-238.
Problem resolved
Step Action and questions Yes No
1 Check the exposure lamp for
connection.
Is the above component
connected properly?
Replace the exposure lamp.
Go to “LED exposure bar
removal” on page 4-235.
Replace the connection.
2
Perform a POR.
Does the error remain when the
power is turned off/on?
Replace the scanner controller
PCBA.
Go to “Scanner controller
PCBA removal” on page 4-238.
Problem resolved
Step Action and questions Yes No
1 Check the large platen glass.
Is the large platen glass
installed properly?
Go to step 2. Remove and clean the large
platen glass.
Go to “Large platen glass
removal” on page 4-234.
Reinstall the large platen glass
properly.
Go to step 3.
2
Remove the large platen glass.
Check the bottom of the large
platen glass in the vicinity the
white reference strip for
contamination.
Is the vicinity of white
reference strip contaminated?
Clean the bottom of the large
platen glass in the vicinity of the
white reference strip.
Reinstall the large platen glass
properly.
Go to step 3.
Go to step 4.
3
Perform a POR.
Does the error remain?
Go to step 4. Problem resolved
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