Xerox Phaser 7400 Service Manual

Error Messages and Codes 3-65
Install or Reseat [C][M][Y][K] Imaging Unit
The Imaging Unit CRUM fails to detect the Imaging Unit.
Initial Actions:
■ Remove and reseat the Imaging Unit.
■ Cycle printer power.
■ If the problem persists, follow the procedure below
Troubleshooting Reference Table
Applicable Parts Wiring and Plug/Jack References
■ Imaging Unit, PL1.1.23
■ Imaging Unit Sensor Board, PL5.1.21
■ Print Engine Map 8 (page 10-11)
■ Print Engine I/U Sensor Board (page 10-41)
Troubleshooting Procedure Table
Step Actions and Questions Yes No
1
Is the Imaging Unit installed and seated
properly?
Go to Step 2]. Reseat the
Imaging Unit.
2
Visually inspect the Imaging Unit Contact
Assembly and springs.
Are the contacts free from damage and
debris?
Go to Step 3. Clean or replace
the Imaging
Drum contacts.
3
Use service diagnostics to test the CMYK
IU Sensor.
Does the sensor function correctly?
Replace the Engine
Controller Board
(
page 8-112).
Go to Step 4.
4
Verify continuity of the CTG0 harness.
Is the harness conductive?
Replace the Imaging
Unit Sensor Board
(
page 8-142).
Replace the
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