Xerox Phaser 7400 Service Manual

3-34 Phaser 7400 Color Printer Service Manual
4
Print a test print in Duplex mode
Does the sheet reverse in the printer?
Go to Step 6. Replace the Duplex
Unit. If the error
persists, go to
Step
5.
5
Check for +24 V to the Duplex Motors.
Disconnect DUPLEX on the Motor Driver
Board.
Is there +24 V at DUPLEX-6 <=> ground?
Go to Step 6. Go to Step 10.
6
Test the Fuser Motor.
Run the Service Diagnostics Fuser Motor
test.
Does the Fuser Motor function correctly?
Go to Step 8. Go to Step 7.
7
Check for +24 V to the Fuser Motor.
Disconnect DCHEAT on the Motor Driver
Board.
Is there +24 V at DCHEAT-3 <=> ground?
Replace the Fuser
Motor
(
page 8-106).
Go to Step 10.
8
Test the Exit Gate Solenoid.
Run the Service Diagnostics Exit Gate
Solenoid test.
Does the solenoid function correctly.
Replace the Exit
Assembly
(
page 8-68).
Go to Step 9.
9
Check for +24 V to the solenoid.
1. Actuate the interlock switches.
2. Disconnect SOLENOID from the Rear
Sensor Board.
Is there +24 V across SOLENOID-1 <=>
ground?
Replace the
solenoid
(
page 8-70).
Replace the Rear
Sensor Board
(
page 8-151).
10
Check Motor Driver Board POW24
connector for 24 V.
1. Disconnect POW24.
Is there +24 V across POW24-1 <=>
POW24-2?
Replace the Motor
Driver Board
(
page 8-141).
Go to Step 11.
11
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).
12
Check the DRV0 and DRV1 ribbon cables
that connect the Motor Driver Board to the
Engine Control Board.
Are these cables connected and
undamaged?
Replace the Engine
Control Board
(
page 8-112).
Replace the DRV0
and DRV1
Harnesses.
Troubleshooting Procedure Table (Continued)
Step Actions and Questions Yes No

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