Xerox Phaser 7760 Service Manual page 121

Table 2 Procedure
Step Actions and Questions
4 1. 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 Tray 3 Sensor test: Tray Sen-
sors > Tray3.
2. Does the level indicate H?
5 1. While still in Service Diagnostics,
remove Tray 3.
2. Does SW1-4 indicate LLLL?
6 1. Reseat the Paper Tray.
2. Does SW1-4: indicate H in any posi-
tion?
7 1. Remove and then reseat the problem
tray.
2. Listen for the Motor. Does the Lift
Motor operate?
Revised
Phaser 7760 Color Laser Printer
Yes No
Replace in order Go to step 5.
until resolved:
1. Tray Level
Sensor
2. No Paper Sen-
sor
3. Engine Inter-
face Board
(REP 1.8)
4. Engine Con-
trol Board
(MCU PWB)
(REP 1.2)
Replace in order Go to step 6.
until resolved:
1. Paper-Select
Switch Assem-
bly (REP 7.5)
2. Engine Inter-
face Board
(REP 1.8)
3. Engine Con-
trol Board
(MCU PWB)
(REP 1.2)
Replace the Paper Replace in order
Feed Motor (REP until resolved:
7.4). 1. Paper-Select
Switch Assem-
bly (REP 7.5)
2. Engine Inter-
face Board
(REP 1.8)
3. Engine Con-
trol Board
(MCU PWB)
(REP 1.2)
Go to step 8. Go to step 9.
January 2010
Step Actions and Questions
8 Did the error clear from the Control Panel? Complete. This
9 Using Service Diagnostics, check the Level
Sensor and No Paper Sensor.
10 While still in Service Diagnostics, remove
Tray 3.
2-85
Table 2 Procedure
Yes No
Replace the Engine
could be an inter- Control Board
mittent problem. If (MCU PWB)
the problem returns, 1.2).
replace in order:
1. Tray Level
Sensor
2. Engine Con-
trol Board
(MCU PWB)
(REP 1.2)
Replace in order Go to step 10.
until resolved:
1. Tray Level
Sensor
2. No Paper Sen-
sor
3. LTA HCF Con-
trol Board
4. Engine Inter-
face Board
(REP 1.8)
5. Engine Con-
trol Board
(MCU PWB)
(REP 1.2)
Replace in order Go to step 11.
until resolved:
1. Paper-Select
Switch Assem-
bly (REP 7.5)
2. Engine Inter-
face Board
(REP 1.8)
3. Engine Con-
trol Board
(MCU PWB)
(REP 1.2)
Status Indicator RAP's
(REP
007-282