Xerox Phaser 7400 Service Manual

3-166 Phaser 7400 Color Printer Service Manual
Troubleshooting Procedure Table
Step Actions and Questions Yes No
1
Test the Drum Phase Sensor for the
affected color.
Run the Service Diagnostics Drum Phase
Sensor test.
Does the sensor function correctly?
Go to Step 2. Replace the
Imaging Unit
Sensor Board
(
page 8-142). If the
error persists, go
to Step
2.
2
Test the affected Imaging Unit Motor.
1. Close the Interlock Switches for test.
2. Run the appropriate Service Diagnostics
motor test.
Does the motor operate?
Replace the
affected Imaging
Unit. If the error
persists, go to
Step
3.
Replace the motor
(
page 8-106). If the
error persists, go
to Step
3.
3
Check for +24 V to the motor.
Is there +24 V across DC(0,1,2,3)- 3 <=>
ground?
Go to Step 6. Go to Step 4.
4
Check Motor Driver Board POW24
connector for 24 V.
1. Disconnect POW24.
Is there +24 V across POW24-1 and 2?
Replace the Motor
Driver Board
(
page 8-141).
Go to Step 5.
5
Check for 24 V at the LVPS
1. Disconnect CN2 on the LVPS.
Is there +24 V across pins 1 and 2?
Replace the
POW24 Harness.
Replace the LVPS
(
page 8-121).
6
Check all pins of the DRV1 harness for
continuity.
Disconnect the DRV1 ribbon cable.
Is the cable conductive?
Go to Step 7. Replace the DRV1
Harness.
7
Check the Imaging Unit Sensor Board
connection.
Is the CTG0 Harness connected?
Go to Step 8. Connect the
Imaging Unit
Sensor Board.
8
Check all pins of the CTG0 harness for
continuity
Disconnect the CTG0 Harness.
Is the harness conductive?
Replace the Engine
Control Board
(
page 8-112).
Replace the CTG0
harness.

Xerox Phaser 7400 Specifications

General

Color	Yes
Print technology	Laser
Maximum resolution	600 x 1200 DPI
Time to first page (black, normal)	12 s
Print speed (black, normal quality, A4/US Letter)	40 ppm
Print speed (color, normal quality, A4/US Letter)	36 ppm
Storage media	HDD
Internal memory	512 MB
Processor model	PowerPC
Maximum internal memory	1 MB
Internal storage capacity	20 GB
Total input capacity	800 sheets
Maximum input capacity	3000 sheets
Paper tray 2 input capacity	350 sheets
Auto document feeder (ADF) input capacity	1650 sheets
Maximum print size	297 x 420 mm
Paper tray media types	Envelopes, Labels, Transparencies
Non-ISO print media sizes	Executive (184 x 267mm), Folio (media size), Letter (media size), Statement (140 x 216mm), Legal (media size)
Maximum ISO A-series paper size	A3
Power requirements	100-240V, 50/60Hz
Networking features	Fast Ethernet
Supported media weight(s)	270 g/m²
Maximum operating temperature range (T-T)	10 - 32 °C
Certification	FCC p.15 A, CE
Storage temperature (T-T)	-20 - 60 °C
Operating temperature (T-T)	-4 - 140 °F
Storage relative humidity (H-H)	10 - 95 %
Operating relative humidity (H-H)	20 - 80 %
Maximum duty cycle	150000 pages per month

Weight and Dimensions

Dimensions (WxDxH)	1438 x 623 x 975 mm