Xerox Phaser 7400 Service Manual

3-98 Phaser 7400 Color Printer Service Manual
Feeder Home Failure
Applicable Status Code:
Code U7: Tray 1 (MPT) does not reach home position.
Initial Actions:
■ Cycle the printer's power.
■ If the problem persists follow the procedure below.
Troubleshooting Reference Table
Applicable Parts Wiring and Plug/Jack References
■ Home Position Sensor, PL8.1.8
■ Registration Motor, PL4.2.36
■ MPTHOME Harness, PL8.1.9
■ Print Engine Map 9 (page 10-12)
■ Print Engine Front Sensor Board (1/2) (page 10-26)
■ Print Engine Motor Driver Board (4/6) (page 10-34)
Troubleshooting Procedure Table
Step Actions and Questions Yes No
1
Check the Tray 1 (MPT) Lift Plate by
printing a job from Tray 1 (MPT).
Does the Lift Plate operate correctly?
Go to Step 3. Go to Step 2.
2
Test the Registration Motor
Run the Service Diagnostics Registration
Motor B test.
Is the motor operating correctly?
Replace the Tray 1
(MPT) Assembly
(
page 8-25).
Replace the
Registration Motor
(
page 8-39).
3
Test the Tray 1 (MPT) Home Position
Sensor.
Run the Service Diagnostics MPT Roller
Home test.
Does the sensor function correctly?
Replace the Engine
Control Board
(
page 8-112).
Go to Step 4.
4
Check continuity of the MPTHOME
harness.
Is the wiring harness conductive?
Replace the Engine
Control Board
(
page 8-112).
Replace the
MPTHOME
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