Kyocera FS-2020D Service Manual page 47

Code
6400
7000
7410
Downloaded from www.Manualslib.com
Contents
Zero cross signal error
The ZCROSS signal does not reach the
engine PWB for more than 2 s.
Toner motor lock error
A motor over-current signal is detected
continuously for 5 seconds since the
toner motor is activated.
Drum unit non- installing error
The drum unit is not installed or not
installed properly.
The drum PWB EEPROM does not com-
municate normally.
manuals search engine
Remarks
Causes Check procedures/corrective measures
Defective harness Reinsert the connector. Also check for conti-
between connect-L nuity within the connector harness. If none,
PWB (YC8) and remedy or replace the harness.
engine PWB (YC3),
or improper connec-
tor insertion.
Defective connec- Reinsert the connector.
tion between
power source unit
(YC103) and con-
nect-L PWB (YC1).
Defective power Replace the power source unit (See page 1-
source unit. 5-38).
Defective engine Replace the engine PWB (See page 1-5-
PWB. 25).
Lump of toner Replace the toner container.
inside toner con-
tainer.
Defective toner Replace the developing unit (See page 1-5-
replenishment 11).
drive system.
Defective toner Replace the developing unit (See page 1-5-
motor. 11).
Defective engine Replace the engine PWB (See page 1-5-
PWB. 25).
The drum unit is Install the drum unit (See page 1-5-12).
not installed.
Defective connec- Check the connection of connectors drum
tion drum PWB PWB (YC1) and connect-L PWB (YC3).
(YC1) and con- (See page 1-4-10, refer to figure 1-4-5)
nect-L PWB (YC3).
Defective drum Replace the drum unit (See page 1-5-12).
PWB EEPROM.
Defective engine Replace the engine PWB (See page 1-5-25).
PWB.
2J0/2J1/2J2-4
1-4-7