Xerox Phaser 7400 Service Manual

4-16 Phaser 7400 Color Printer Service Manual
Power Supply
LVPS Overcurrent Protection Circuit
This circuit stops all outputs if the 24 VDC, 5 VDC or 3.3 VDC power supply detect a
short circuit. The circuit is reset when the short is removed, the power is turned off,
and then on again.
LVPS Overvoltage Protection Circuit
This circuit stops all outputs if the 24 VDC, 5 VDC or 3.3 VDC power supply
exceeds the specified voltage. The operating point is 32 VDC or more for 24 VDC,
7
VDC or more for 5 VDC, or 6 VDC or more for 3.3 VDC.
+24 VDC Output Stopped By Interlock Switch
Opening the Top Cover, Door A or Front Door opens the Interlock Switch. This shuts
off the +24 VDC supplied to the motors, clutches, and solenoids.
AC Power Supply Troubleshooting
Troubleshooting Reference Table
Applicable Parts Wiring and Plug/Jack References
■ LVPS, PL3.1.4 ■ Print Engine LVPS (page 10-39)
Troubleshooting Procedure Table
Step Action and Questions Yes No
1
Check the voltage at the AC wall outlet.
Is there approximately 110 VAC (or 220 VAC if
the printer is a 220 V configuration) at the AC wall
outlet?
Go to Step 2. Notify the
customer of
improper AC
output from the
outlet.
2
Check the power cord for defects or a loose
connection.
Replace or
reseat the power
cord.
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