Xerox Phaser 7400 Service Manual

General Troubleshooting 4-11
Control Panel LED Is On, Control Panel Display Is Blank
1. Remove and reseat the Image Processor Board (page 8-113).
2. Replace the Control Panel (page 8-111).
3. Replace the Image Processor Board (page 8-113).
4. Replace the Control Panel harness.
Inoperable Printer Troubleshooting
The printer does not appear to operate after the Power Switch is turned On.
Initial Actions:
■ Check the wall outlet for available AC voltage.
■ Cycle printer power.
■ Check the Image Processor Board Health LED for a fault indication. See
"Power On Self Test (POST)" on page 4-3 for information on blink patterns.
■ Systematically remove all printer options to isolate a possible problem
component.
■ If the problem persists, follow the procedure below.
Troubleshooting Reference Table
Applicable Parts Wiring and Plug/Jack References
■ LED Relay Board, PL12.1.34
■ Image Processor Board
■ Engine Control Board, PL1.1.4
■ LVPS, PL3.1.4
■ Print Engine Map 13 (page 10-16)
■ Print Engine LED Heads (page 10-37)
Troubleshooting Procedure Table
Step Action and Questions Yes No
1
Check the Control Panel.
Do characters appear on the display?
Go to Step 9. Go to Step 2.
2
Check for +5 V at the LED Relay Board.
Is the voltage to the LED Board correct?
Replace the LED
Relay Board
(
page 8-126).
Go to Step 4.
3
Check the Control Panel connection.
Is the Control Panel harness connected?
Replace the
Control Panel
harness. Go to
Step 5.
Connect 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