January 2010
2-39
Phaser 7760 Color Laser Printer
004-346, 004-347
Status Indicator RAP’s
Revised
21.Enter Service Diagnostics Menu:
Printer Menu > Troubleshooting >
Service Tools > Printer Status Page
> hold the Up and Down buttons
simultaneously > Run Service Diag-
nostics > OK. Perform the Clear Tech
Rep Faults 04-346 procedure.
2. Enter the Adjustments/Calibrations
menu and run the Belt Edge Learn
Test with the Right-Hand Door open
and the Door Interlock held actuated.
3. Does the Accumulator Belt rotate dur-
ing the test?
Go to step 3. Go to step 6.
3 CAUTION
Removing the Accumulator Belt Assembly
allows light into the Imaging Unit area, avoid
exposing the Imaging units to light.
1. Remove the Accumulator Belt Assem-
bly.
2. Is the Belt Home Marker present?
Go to step 4. Replace the Accu-
mulator Belt Assem-
bly (REP 9.15).
4 1. On the Accumulator Belt Assembly,
rotate the Belt Drive Gear in the nor-
mal process direction until the Belt
Home Marker is positioned beneath
the Belt Home Sensor.
2. Reinstall the Belt Assembly.
3. Enter Service Diagnostics Menu:
Printer Menu > Troubleshooting >
Service Tools > Printer Status Page
> hold the Up and Down buttons
simultaneously > Run Service Diag-
nostics > OK. Run the Accum MOB
Sensor test.
4. Is MOB Sensor is H displayed?
Replace in the fol-
lowing order:
1. Engine Con-
trol Interface
Board (REP
1.8)
2. Engine Con-
trol Board
(MCU PWB)
(REP 1.2)
Go to step 5.
5 1. Replace the Accumulator Belt Assem-
bly.
2. Retest.
3. Does error 30 return?
Troubleshoot and
repair using the
Reflective Sensor
Procedure (Section
6).
Complete.
6 1. Partially remove the Accumulator Belt
Assembly.
2. Manually rotate the Drive Gear clock-
wise.
3. Does the Belt turn freely?
Go to step 14. Go to step 7.
Table 2 Procedure
Step Actions and Questions Yes No
7 1. Inspect the Accumulator Belt Cleaner
and Waste Auger for packed toner.
2. Are the Belt Cleaner and Auger clean
and free of toner?
3. Do the gears rotate freely?
Go to step 9. Go to step 8.
8 1. Using a Type II Toner vacuum, vacuum
out the Belt Cleaner and Waste Auger.
2. Is the Actuating Lever broken off of the
Belt Cleaner Toner Gate?
Replace the Belt
Cleaner Assembly
(REP 9.16).
Go to step 9.
9 1. Remove the Waste Toner Cartridge.
2. Enter Service Diagnostics and run the
Agitator Motor test.
3. Does the Motor operate correctly?
Verify the Waste
Toner Cartridge is
fully seated.
Complete.
Go to step 10.
10 1. Check the voltage at J537 on the har-
ness.
2. Is the voltage +24 VDC?
Go to step 12. Go to step 11.
11 1. Check the voltage at J537 on the har-
ness.
2. Is the voltage +24 VDC?
Replace the Engine
Control Board
(MCU PWB) (REP
1.2).
Go to step 13.
12 1. Check the voltage at J537 on the har-
ness.
Replace the Engine
Control Board
(MCU PWB) (REP
1.2)
Replace the Waste
Toner Agitator
Motor (REP 9.13).
13 Is +24 VDC present at the Low-Voltage
Power Supply Board?
Troubleshoot the
wiring between the
+24 VDC LVPS and
the Engine Control
Board.
Refer to Trouble-
shooting Low-Volt-
age Power Supplies
procedure (Section
6).
Table 2 Procedure
Step Actions and Questions Yes No
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