3-140
Phaser 6280 Color Laser Printer Service Manual
Error Messages and Codes
6
1. Check the toner density. Perform
Gradation Test Print (page 5-13):
Service Mode
>
Test Print
>
Gradation ESS
.
2. Compare the density of four colors
toner. Is there dark color on the
print?
Go to step 7.
Replace the
MCU Board
(page 8-86).
7
Check the Solenoid in the Transfer Unit
for operation.
1. Perform the ADC Sensor Solenoid
Service Mode
>
Engine Diag
>
Motor Test
>
ADC
(CTD) Sensor Solenoid
.
2. Perform the ADC Sensor LED test
Service Mode
>
Engine Diag
>
Motor Test
>
ADC
(CTD) Sensor LED
.
3. Does the ADC Sensor operate
properly?
Go to step 12.
Go to step 8.
8
1. Check the wiring harness
connectors P/J27, P/J272, and P/
J2721 between the MCU Board and
the Transfer Unit.
2. Are the connectors securely
connected?
Go to step 9.
Reconnect the
connectors.
Go to step 9.
9
Check the Front Cover Harness for
continuity.
1. Disconnect P/J2721 from the
Transfer Unit and P/J272 from the
Right Side Harness.
2. Check continuity between P/J2721
<=> P/J272.
Go to step 10.
Replace the
Front Cover
Harness.
10
Check the Right Side Harness for
continuity.
1. Disconnect P/J27 from the MCU
Board and P/J272 from the Front
Cover Harness.
2. Check continuity between P/J27 <=>
P/J272.
Go to step 11.
Replace the
Right Side
Harness.
11
Check the ADC Sensor signal.
1. Disconnect P/J27 from the MCU
Board.
2. Is there +5 V across ground <=>
J27-7 pin?
Replace the
Transfer Unit
(page 8-8).
Replace the
MCU Board
(page 8-86).
12
1. Replace the corresponding Print
Cartridge (page 8-10).
2. Does the error still occur?
Replace the
Laser Unit
(page 8-50).
Complete.
Troubleshooting Procedure Table (continued)
Step
Actions and Questions
Yes
No
Summary of Contents for Phaser 6280
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Page 15: ...Phaser 6280 Color Laser Printer Service Manual xiii...
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Page 62: ...1 36 Phaser 6280 Color Laser Printer Service Manual General Information...
Page 288: ...3 152 Phaser 6280 Color Laser Printer Service Manual Error Messages and Codes...
Page 432: ...5 58 Phaser 6280 Color Laser Printer Service Manual Print Quality Troubleshooting...
Page 558: ...8 112 Phaser 6280 Color Laser Printer Service Manual Service Parts Disassembly...
Page 670: ...I 10 Phaser 6280 Color Laser Printer Service Manual...
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