Xerox Phaser 6180MFP Service Manual page 330

Error Messages and Codes
3-142
Troubleshooting Procedure Table (continued)
Step Actions and Questions
Check the toner density and compare
5
the density of four colors toner.
1. Check the toner density. Perform
Gradation Test Print (page 5-16):
Service Mode
Print > Gradation
2. Is there light color on the print?
6 Check the Solenoid in the Transfer Unit
for operation.
1. Perform the ADC Sensor Solenoid
test (page 4-72):
Printer Diag >
Test > ADC (CTD) Sensor
2. Perform the ADC Sensor LED test
(page 4-73): Service Mode
Printer Diag >
Test > ADC (CTD) Sensor
3. Does the ADC Sensor operate
properly?
1. Check the wiring harness
7
connectors P/J27, P/J272, and P/
J2721 between the MCU Board and
the Transfer Unit.
2. Are the connectors securely
connected?
Check the Front Cover Harness for
8
continuity.
1. Disconnect P/J2721 from the
Transfer Unit.
2. Disconnect P/J272 from the Right
Side Harness.
3. Check continuity between P/J2721
<=> P/J272.
Check the Right Side Harness for
9
continuity.
1. Disconnect P/J27 from the MCU
Board.
2. Disconnect P/J272 from the Front
Cover Harness.
3. Check continuity between P/J27 <=>
P/J272.
10 Check the ADC Sensor signal.
1. Disconnect P/J27 from the MCU
Board.
2. Is there +5 V across ground <=>
J27-A7 pin on the MCU Board?
Yes
Go to step 6.
> Printer Diag > Test
ESS.
Go to step 11.
Service Mode >
Engine Diag > Motor
Solenoid.
>
Engine Diag > Motor
LED.
Go to step 8.
Go to step 9.
Go to step 10.
Replace the
Transfer Unit
(page 8-9).
Phaser 6180MFP Multifunction Printer Service Manual
No
Replace the
MCU Board
(page 8-88).
Go to step 7.
Reconnect the
connectors.
Go to step 10.
Replace the
Front Cover
Harness.
Replace the
Right Side
Harness.
Replace the
MCU Board
(page 8-88).