Xerox Phaser 7400 Service Manual

3-176 Phaser 7400 Color Printer Service Manual
[CM][YK] Toner Supply Failure
The Low Toner Sensor indicates a supply failure at the indicated Imaging Unit.
Applicable Status Codes:
Code 941: Toner supply failure with Cyan or Magenta Toner.
Code 942: Toner supply failure with Yellow or Black Toner.
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
■ Toner Cartridges, PL1.1.24
■ Imaging Unit, PL1.1.23
■ Toner Motors, PL5.1.22
■ Imaging Unit Sensor Board, PL5.1.21
■ Print Engine Map 5 (page 10-8)
■ Print Engine Map 8 (page 10-11)
■ Print Engine Motor Driver Board (2/6) (page 10-32)
■ Print Engine Imaging Unit Sensor Board (page 10-41)
Troubleshooting Procedure Table
Step Actions and Questions Yes No
1
Check the following for evidence of fault or
damage:
■ Toner Cartridge
■ Imaging Unit Agitator Bar
■ Low Toner Sensors
Is there any damage, debris or blockage?
Replace any
damaged parts.
Go to Step 2.
2
Test the affected Toner Motor.
1. Remove the CM or YK Toner Cartridges.
2. Run the appropriate Service Diagnostics
Toner Supply Motor test.
Does the motor rotate?
Go to Step 3. Replace the motor
(
page 8-104). If the
error persists,
replace the Motor
Driver Board
(
page 8-141).
3
Does the plunger that engages the
Agitation Bar move in and out while the
Toner Motor rotates?
Go to Step 4. Replace the Toner
Supply Camshafts
(
page 8-144).
4
Test the affected Low Toner Sensors.
1. Remove the CM or YK Imaging Units.
2. Run the appropriate Service Diagnostics
Toner Cart Sensor test.
Do the sensors function correctly?
Replace the Engine
Control Board
(
page 8-112)
Replace the
Imaging Unit
Sensor Board
(
page 8-142).

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