Xerox Phaser 7400 Service Manual

3-24 Phaser 7400 Color Printer Service Manual
3
Check the Option Harness continuity.
Disconnect OPTIF from the Engine Control
Board and the Option connector.
Is the harness conductive?
Go to Step 4. Replace the Option
harness.
4
Test the tray sensors.
Run the Service Diagnostics Tray Switches
test for the appropriate tray.
Do the sensors function correctly?
Go to Step 6. Go to Step 5.
5
Check the sensor harness continuity.
Is the harness conductive?
Replace the
sensor. If the error
persists, replace
the Feeder Board.
Replace the
harness.
6
Test the Feeder Motors.
Run the Service Diagnostics Motor tests.
Do the motors function correctly?
Go to step 8. Go to Step 7.
7
Check the motor harness continuity.
Is the harness conductive?
Replace the motor.
If the error persists,
Go to Step 10.
Replace the
harness.
8
Test the Registration Clutch.
Run the Service Diagnostics Clutch test.
Does the clutch function correctly?
Go to step 11. Go to step 9.
9
Check the CL1 harness continuity.
Is the harness conductive?
Replace the clutch.
If the error persists,
go to Step 10.
Replace the
harness.
10
Check for +24 V at the Motor Driver
Board’s OPTRY24 connector.
1. Close the Interlock Switches.
2. Disconnect OPTRY24.
Is there +24 V at OPTRY24-1 and -2 <=>
ground?
Replace the
affected Option
Control Board.
Go to Step 11.
11
Check OPTRY24 Harness continuity.
Disconnect the OPTRY24 Harness.
Is the OPTRY24 Harness conductive?
Go to Step 13. Replace the
OPTRY24
Harness.
12
Check the Registration Assembly.
Is there a gap between the rollers?
Replace the
Registration
Assembly
(
page 8-84).
Go to Step 13.
13
Check the DRV1 harness continuity.
Is the harness conductive?
Replace the Motor
Driver Board
(
page 8-141). If the
error persists,
replace the Engine
Control Board
(
page 8-112)
Replace the
harness.
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