Phaser 6180 Color Laser Printer Service Manual 5-25
Print-Quality Troubleshooting
Light or Undertone Print
The overall image density is too light in all colors.
Initial Actions
■ Check the paper transfer path.
■ Ensure there are no debris on the transfer path.
Troubleshooting Reference Table
Applicable Parts Example Print
■ Transfer Unit, PL4.1.1
■ Print Cartridge (C/M/Y/K),
PL5.1.18-21
■ Laser Unit, PL5.1.2
■ Dispenser, PL5.1.12
■ MCU Board, PL9.1.20
■ HVPS, PL5.1.17
■ Image Processor Board, PL9.1.27
Troubleshooting Procedure Table 
Step Actions and Questions Yes No
1 Check the Print Cartridge (C/M/Y/K) 
for damages. Is the Print Cartridge 
damaged?
Go to step 2. Replace the 
Print Cartridge
(page 8-9).
2 Check the paper condition. Is the 
paper dry, recommended type, and 
loaded in the correct position?
Go to step 3. Replace the 
paper.
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