Xerox Phaser 7760 - Page 101

January 2010
2-65
Phaser 7760 Color Laser Printer
007-105, 007-110
Status Indicator RAP’s
Revised
Figure 1 007-105 Tray 2 Feed Out Sensor
Figure 2 007-105 Tray 2 Feed/Lift Motor
007-110 Tray 3 Misfeed
The Takeaway Sensor does not detect paper after feeding from Tray 3.
Initial Actions
• Remove Tray 2 (REP 7.8). Ensure P/J840 is securely connected (below the left paper tray
rail, near the rear side of the machine) (refer to section 7, 3T Module (Tray 3, 4, 5 feeder)
Plug/Jack Locations - Figure 21).
• Check condition and specification of paper in Tray 3.
• Check for intermittent misfeeds ensure paper type selection is correct (open tray, select
Change Description).
• Check the paper path for obstructions.
• Check for wear and clean the Tray 3 Feeder Roll, Takeaway Roll and the Pinch Roll.
Procedure
Open the Left Cover and cheat the Left Cover Interlock Switch (PL 16.13 - TTM or PL 15.10 -
3TM). Enter Service Diagnostics Menu: Printer Menu > Troubleshooting > Service Tools >
Printer Status Page > hold the Up and Down buttons simultaneously > Run Service Diag-
nostics > OK. Block and unblock the Takeaway Sensor (PL 16.6- TTM or PL 15.10 - 3TM).
The display changes.
YN
Check the circuit of the Takeaway Sensor (Figure 1). Refer to Section 6, Transmissive
Sensor Procedure for troubleshooting procedure.
Perform the Paper Feed Motors test. Both Takeaway Rolls (PL 16.6 - TTM or PL 15.10 -
3TM) rotate.
YN
Takeaway Motor 1 energizes.
YN
+24 VDC is measured between P/J542-10 and GND on the Tray Module PWB
(refer to section 7, TT Module (rear) Plug/Jack Locations - Figure 25, or 3T
Module (rear) Plug/Jack Locations - Figure 26).
YN
+24 VDC is measured at P/J668-3 on the Tray Module PWB (refer to sec-
tion 7, TT Module (rear) Plug/Jack Locations - Figure 25).
YN
Refer to the +24 VDC Wirenets (Figure 4). Check the +24 VDC to the Tray
Module PWB.
Replace the Tray Module PWB (PL 16.15 - TTM or PL 15.9 - 3TM).
+24 VDC is measured at each of the following pins on P/J542: Pins 1, 2, 5, and
6.
YN
Refer to Figure 3. Check the wires from the Tray Module PWB to the Takeaway
Motor 1 for an open circuit. If the wires are good, replace the Takeaway Motor 1
(PL 15.9)
A B C