2J5
1-4-6
6230
Broken fuser thermistor M wire
The detected temperature of fuser ther-
mistor S is 50
°
C/122
°
F or more and
input from fuser thermistor S is 1 less
than 1 (A/D value) continuously for 1.8
second.
Except when the fuser heater is turned
off.
Poor contact in the
fuser thermistor M
connector termi-
nals.
Reinsert the connector (See page P.1-5-21).
Broken fuser ther-
mistor M wire.
Measure the resistance. If it is
∞ Ω
, replace
the fuser thermistor M (See page P.1-5-21).
Fuser thermistor M
installed incor-
rectly.
Check and reinstall if necessary (See page
P.1-5-21).
Thermal cutout
triggered.
Check for continuity. If none, replace the
thermal cutout (See page P.1-5-21).
Fuser heater lamp
installed incor-
rectly.
Check and reinstall if necessary (See page
P.1-5-17).
Broken fuser
heater lamp wire.
Check for continuity. If none, replace the
fuser heater lamp M (See page P.1-5-17).
6400
Zero cross signal error
The ZCROSS signal does not reach the
engine PWB for more than 2 s.
Defective harness
between connect-L
PWB (YC8) and
engine PWB
(YC503), or
improper connec-
tor insertion.
Reinsert the connector. Also check for conti-
nuity within the connector harness. If none,
remedy or replace the harness.
Defective connec-
tion between
power source unit
(YC103) and con-
nect-L PWB (YC1).
Reinsert the connector.
Defective power
source unit.
Replace the power source unit (See page
P.1-5-29).
Defective engine
PWB.
Replace the engine PWB (See page P.1-5-
23).
7000
Toner motor lock error
A motor over-current signal is detected
continuously for 5 seconds since the
toner motor is activated.
Lump of toner
inside toner con-
tainer.
Replace the toner container.
Defective toner
replenishment
drive system.
Replace the developer unit (See page P.1-5-
11).
Defective toner
motor.
Replace the developer unit (See page P.1-5-
11).
Defective engine
PWB.
Replace the engine PWB (See page P.1-5-
23).
Code
Contents
Remarks
Causes
Check procedures/corrective measures
Содержание Ecosys FS-6970DN
Страница 1: ...SERVICE MANUAL Published in March 2009 842J5110 2J5SM060 First Edition FS 6970DN...
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