Diagnostic information 2-211
7500-432, -632, and -832
Horizontal bands
Step Check Yes No
1 Check the media condition.
Load new, dry, and recommended media.
Re-print the defective image.
Does the error continue?
Go to step 2. Problem solved.
2 Are the media transfer route and the media path free of
contamination and debris?
Go to step 3. Remove debris
or
contamination.
3 Check the toner cartridge.
Install a new toner cartridge.
Re-print the defective image.
Is the image density normal?
Problem solved. Go to step 4.
4 Check the transfer roll assembly.
Remove the transfer roll assembly.
Check the transfer roll assembly for rotation,
contamination and wear.
Go to step 5. Replace the
transfer roll
assembly.
5 Check white-band pitch.
Is the white-band pitch approximately 78 mm (heat roll
circumference)?
Go to step 6. Go to step 9.
6 Check the heat roll and pressure roll.
Remove the fuser unit assembly.
Is there contamination or cracking on the heat roll and/or
the pressure roll?
Replace the
fuser unit
assembly.
Go to step 7.
7 Check the image development process.
Perform a print test. Turn off the printer power while
printing.
Carefully remove the PC cartridge, and check the toner
image formed on the drum before the transfer roll
assembly.
Is the image completely formed on the drum, and is the
area clear, black, and easy to read?
Go to step 8. Go to step 9.
Leading edge
Trailing edge
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