Xerox Phaser 7400 Service Manual

3-154 Phaser 7400 Color Printer Service Manual
CRUM Reader Board Failure
An error occurred while attempting to read the status of the Toner Cartridge CRUMs.
Applicable Status Codes:
Code 230: The CRUM Reader Board does not respond.
Code 231: A communications error with the CRUM Reader Board.
Code 232: A transmit error with the CRUM Reader Board at power on.
Code 233: A communications error between the CRUM Antenna and CRUM.
Code 234: The CRUM Reader Board detects five or more CRUMs.
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
■ CRUM Antenna
■ CRUM Reader Board
■ Print Engine Map 1 (page 10-4)
■ Print Engine Fuser (page 10-40)
Troubleshooting Procedure Table
Step Actions and Questions Yes No
1
Check all pins of the CRUM Harness for
continuity.
1. Remove the Top Cover (page 8-24).
2. Disconnect the CRUM cable from RFID
on the Engine Control Board and CN1
on the CRUM Reader Board.
Is the cable conductive?
Replace the CRUM
Reader Board
(
page 8-146). If the
error persists, go to
Step 2.
Replace the
CRUM Harness. If
the error persists,
go to Step 2.
2
Check continuity of each Antenna Harness.
Disconnect CN2, CN3, CN4, and CN5 from
the CRUM Reader Board and CRUM
Antennas.
Is each harness conductive?
Replace the CRUM
Antennas
(
page 8-147). If the
error persists, go to
Step 3.
Replace damaged
wiring.
3
Check for +5V at RFID-2 on the Engine
Control Board.
Is there +5 V at RFID-2 <=> ground?
Go to Step 4. Replace the
Engine Control
Board
(
page 8-112).
4
Check for +5V at POWER-2 on the Engine
Control Board.
Is there +5 V at POWER-2 <=> ground?
Replace the Engine
Control Board
(
page 8-112).
Replace the LVPS
(
page 8-121).

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