3NG
1-4-4
1820
Paper feeder communication
error
A communication error from
paper feeder is detected 10
times in succession.
Improper installa-
tion paper
feeder.
Follow installation instruction carefully again.
Defective con-
nector cable or
poor contact in
the connector.
Reinsert the connector. Also check for conti-
nuity within the connector cable. If none,
replace the cable.
SD main PWB (YC13) and engine PWB
Defective engine
PWB.
Replace the engine PWB and check for cor-
rect operation.
Defective SD
main PWB.
Replace the SD main PWB and check for cor-
rect operation (see 1-5-6).
1920
Paper feeder EEPROM error
When writing the data, the write
data and the read data is not
continuously in agreement
three times.
Defective SD
main PWB.
Replace the SD main PWB and check for cor-
rect operation (see 1-5-6).
Device damage
of EEPROM.
Contact the Service Administrative Division.
2640
SD paper feed motor error
After SD paper feed motor is
driven, the ready signal does
not turn to L within 2 s.
Defective con-
nector cable or
poor contact in
the connector.
Reinsert the connector. Also check for conti-
nuity within the connector cable. If none,
replace the cable.
SD paper feed motor and SD main PWB
(YC16)
Defective drive
transmission sys-
tem of motor.
Check if the gears rotate smoothly. If not,
grease the bushes and gears. Check for bro-
ken gears and replace if any.
Defective SD
paper feed
motor.
Replace the SD paper feed motor.
Defective SD
main PWB.
Replace the SD main PWB and check for cor-
rect operation (see 1-5-6).
Code
Contents
Causes
Check procedures/
corrective measures
Summary of Contents for Utax PF 770
Page 1: ...Service Manual 3DSHU HHGHU 3 5HY Date 0 20 1 60 ...
Page 2: ...Service Manual 3DSHU HHGHU 3 5HY Date 0 20 1 60 ...
Page 4: ...Revision history Revision Date Replaced pages Remarks 1 6 April 2011 CONTENTS 2 4 1 to 2 4 3 ...
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Page 11: ...This page is intentionally left blank ...
Page 16: ...3NG 1 1 3 1 1 3 Machine cross section Figure 1 1 2 Paper path ...
Page 17: ...3NG 1 1 4 This page is intentionally left blank ...
Page 69: ...3NG 1 5 12 This page is intentionally left blank ...
Page 77: ...3NG 2 3 4 This page is intentionally left blank ...