Xerox Phaser 7400 Service Manual

2-16 Phaser 7400 Color Printer Service Manual
Microswitches
Microswitches are used primarily as paper size sensors and cover or door interlocks.
They are in a normally open state, and close when actuated. A bank of microswitches
is used to detect paper size in the universal trays.
Thermistors
Thermistors have a known value of resistance at a certain temperature. Used primarily
in the Fuser for temperature sensing.
Hall-Effect
Hall-Effect sensors detect the magnetic properties of the actuator. Hall-Effect sensors
are used to monitor activity of the Waste Toner Recovery system and Transfer Unit
belt. Use a magnetic source to actuate these sensors during testing.
List of Sensor and Interlock Types
Name Type Function
Level Sensor Photo-receptive Detects paper stack height in Trays 2~6.
No Paper Photo-receptive Detects no paper condition in all trays.
Paper Size Microswitch array Detects the tray and the paper size.
Registration Photo-receptive Detects paper at the registration rollers.
Color Registration Photo-reflective Monitors color registration.
Feed-Out Photo-receptive Detects paper leaving the feeder.
Fuser Exit Photo-receptive Detects paper as it leaves the Fuser.
Stack Full Photo-receptive Detects when the output tray is full.
Temperature Thermistor Monitor Fuser roller temperatures.
Door Interlocks Microswitch Interrupts +24 V to the Motors.
Low Toner photo-reflective Detects toner in the Imaging Units.
Fuser Thermostats Thermostatic switches Interrupts AC power to the Fuser.
Offset Home Photo-receptive Detects Offset carriage position.
Temp/Humidity Integrated circuit Monitors the printer’s environment.
Waste Toner Hall-effect Monitors waste augers and transfer belt.
CRUM antenna RFID code reader Communicates with the CRUMs.

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