Xerox Phaser 7760 Service Manual page 143

Figure 3 008-152 Takeaway Motor 2
Revised
Phaser 7760 Color Laser Printer
008-164 POB Sensor Jam
The POB Sensor did not detect paper after the Registration Clutch Energized.
Initial Actions
• Check condition and specification of the paper supply.
• Check for paper on the IBT.
• Check for obstructions in the paper feed path.
• Clean the POB Sensor.
• Check the 2nd BTR transmission gears for wear.
• Clean the Registration Roll and check for damage or wear.
Procedure
Open the Left Cover Assembly
Troubleshooting > Service Tools > Printer Status Page > hold the Up and Down buttons
simultaneously > Run Service Diagnostics > OK. Block and unblock the POB Sensor
2.9). The display changes state.
Y N
Check the circuit of the POB Sensor
cedure for troubleshooting procedure.
Perform the Registration Clutch test. The Registration Clutch
Y N
Check the circuit of the Registration Clutch
for troubleshooting procedure.
Open the Left Cover Assembly
changes state.
Y N
Check the circuit of the Fuser Exit Switch
troubleshooting procedure.
Close the Left Cover Assembly. Perform the 2nd BTR Motor test. The 2BTR contacts and
retracts.
Y N
Go to RAP 009-342, 009-343, 2nd BTR Contact a Retract Failure troubleshooting proce-
dure.
Perform the Main Motor test. The Main Motor energizes.
Y N
Check the circuit of the Main Motor
• Ensure that the connectors shown in the circuit diagrams
connected and that the wires are not damaged.
• Replace the POB Sensor
January 2010
2-107
(PL 2.9). Enter Service Diagnostics Menu: Printer Menu >
(Figure 1). Refer to Section 6,
(PL 2.6) energizes.
(Figure 2). Refer to Section 2,
(PL 2.8). Actuate the Fuser Exit Switch
(Figure 3). Refer to Section 2,
(Figure 4).
(Figure 1,
(PL 2.9).
Status Indicator RAP's
008-152, 008-164
(PL
Reflective Sensor Pro-
OF 99-4 RAP
(PL 2.8). The display
OF 99-3 RAP for
Figure 2) are securely