Xerox Phaser 7400 Service Manual

Error Messages and Codes 3-145
Fuser Thermistor Errors
Applicable Status Codes:
Code T3: Fuser Belt Thermistor Short Circuit
Code T4: Fuser Belt Thermistor Open Circuit
Code T5: Fuser Belt Thermistor Temperature too High
Code T6: Fuser Belt Thermistor Temperature too Low
Code T7: Fuser Release Error
Code T8: Fuser Belt Slack Error
Code 172: Fuser Compensation Thermistor indicates temperature too High
Code 173: Fuser Compensation Thermistor indicates temperature too Low
Code 176: Fuser Compensation Thermistor Short Error
Code 177: Fuser Compensation Thermistor Open Error
Initial Actions:
■ Cycle the printer's power.
■ If the problem persists follow the procedure below.
Caution
Allow adequate time for the Fuser to cool before servicing the printer.
Troubleshooting Reference Table
Applicable Parts Wiring and Plug/Jack References
■ Fuser, PL1.1.21
■ Engine Control Board, PL1.1.4
■ Print Engine Map 3 (page 10-6)
■ Print Engine Fuser (page 10-40)
Troubleshooting Procedure Table
Step Actions and Questions Yes No
1
Check the Fuser for damage.
Is the Fuser connector damaged?
Replace the Fuser. Go to Step 2.
2
Check all pins on the FSRSNR Harness for
continuity.
Disconnect the FSRSNR Harness from the
Engine Control Board HEATIF connector
and Fuser connector.
Is the harness conductive?
Go to Step 6. Replace the
FSRSNR Harness.
3
Check all pins on the FSRPWR Harness
for continuity.
Disconnect CN4 on the LVPS.
Is the harness conductive?
Replace the LVPS
(
page 8-121). If the
error persists,
replace the Engine
Control Board
(
page 8-112).
Replace the
FSRPWR
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