Xerox Phaser 7400 Service Manual

3-32 Phaser 7400 Color Printer Service Manual
4
Test the Fuser Exit Sensor.
Run the Service Diagnostics Fuser Exit
Sensor Test.
Does the sensor function correctly?
Go to Step 7. Replace the sensor
(
page 8-71). If the
error persists, go to
Step 5.
5
Check all pins on the SNS Harness for
continuity.
1. Disconnect SNS from the Rear Sensor
Board.
2. Check continuity between SNS<=>J140.
Go to Step 6. Replace the SNS
Harness. If the
error persists, go to
Step 6.
6
Check the HEATR signal to the Engine
Control Board.
1. Disconnect RSNS from the Rear Sensor
Board.
2. Actuate the Fuser Exit Sensor.
Does the voltage across RSNS-6 <=>
ground change?
Replace the Engine
Control Board
(
page 8-112).
Replace the Rear
Sensor Board
(
page 8-151).
7
If possible print one sheet of paper.
Does the Fuser Motor turn?
Inspect and replace
defective gear(s).
Go to Step 8.
8
Test the Fuser Motor.
Run the Service Diagnostics Fuser Motor
test.
Does the Fuser Motor function correctly?
Replace the Fuser. Go to Step 9.
9
Check for +24 V to the Fuser Motor.
Disconnect DCHEAT on the Motor Driver
Board.
Is there +24 V across DCHEAT-3 <=>
ground?
Go to Step 10. Replace the Motor
Driver Board
(
page 8-141). If the
error persists, go to
Step 10.
10
Replace the Fuser Motor.
Does the Fuser Motor function correctly?
Complete Go to Step 11.
11
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 SVM1
and SVM2
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