![background image](http://html1.mh-extra.com/html/xerox/7700dx-phaser-color-laser-printer/7700dx-phaser-color-laser-printer_service-manual_3373837109.webp)
Phaser 7700 Color Laser Printer Service Manual
2-79
120
121
12-260
12-262
FINISHER ERROR 120 EJECT CLAMP HOME SENSOR ON
FAILURE
FINISHER ERROR 121 EJECT CLAMP HOME SENSOR OFF
FAILURE
Remove the Finisher Rear Cover (RRP 72, on page 11-330).
Remove the sensor from the top of the eject motor mount bracket (RRP 76, on page 11-335).
Enter Service Diagnostics Mode.
From the Main Menu, select “Sensor Tests/Finisher Sensors/Miscellaneous.”
Manually actuate the Eject Clamp Home Sensor and observe the display.
Does display indicate the Eject Clamp Home Sensor toggling between H & L?
Yes No
Remove the Rear Cover and the Board Cover (RRP 72, on page 11-330).
Measure the voltage between the Finisher Control Board P849-5
(see figure page 2-46) and Finisher frame ground.
Again manually actuate the Stack Height Sensor.
Does the voltage toggle b5 VDC and 0 VDC?
Yes No
Measure the voltage at the Eject Clamp Home Sensor pin 2 (yellow) and
Finisher frame ground.
Once again manually actuate the Eject Clamp Home Sensor.
Does the voltage toggle b5 VDC and 0 VDC?
Yes No
Measure the voltage at Eject Clamp Home Sensor pin 1 (gray).
Does the voltage m5 VDC?
Yes No
Measure the voltage between the Finisher Control Board P849-6
(see figure page 2-46)and Finisher frame ground.
Does the voltage m5 VDC?
Yes No
Replace the Finisher Control Board (RRP 77, on page 11-336).
Repair or replace the wiring harness between the Finisher Control
Board and the Eject Clamp Home Sensor.
A
B
C
D
Error
Code
Chain /
Link
Front Panel Message
Summary of Contents for 7700DX - Phaser Color Laser Printer
Page 1: ...Service Manual Phaser 7700 701P28180 Color Laser Printer...
Page 2: ......
Page 22: ...xx Phaser 7700 Color Laser Printer Service Manual...
Page 30: ...xxviii Phaser 7700 Color Laser Printer Service Manual...
Page 60: ...1 30 Phaser 7700 Color Laser Printer Service Manual...
Page 152: ...3 122 Phaser 7700 Color Laser Printer Service Manual...
Page 174: ...5 144 Phaser 7700 Color Laser Printer Service Manual...
Page 264: ...7 234 Phaser 7700 Color Laser Printer Service Manual...
Page 316: ...8 286 Phaser 7700 Color Laser Printer Service Manual...
Page 324: ...9 294 Phaser 7700 Color Laser Printer Service Manual...
Page 334: ......
Page 335: ...Phaser 7700 Color Laser Printer Service Manual 10 305...
Page 336: ......
Page 337: ...Phaser 7700 Color Laser Printer Service Manual 10 307 ors rear of printer...
Page 338: ......
Page 339: ...Phaser 7700 Color Laser Printer Service Manual 10 309 MPT and Left Hand Cover Assembly LH Door...
Page 340: ......
Page 341: ...Phaser 7700 Color Laser Printer Service Manual 10 311 ly Board and Lower Tray Motor Assembly...
Page 342: ......
Page 352: ...11 322 Phaser 7700 Color Laser Printer Service Manual Blank Page...
Page 404: ...12 374 Phaser 7700 Color Laser Printer Service Manual...
Page 405: ......
Page 406: ...701P28180...