3NB/3ND/3N0/3NK
1-4-25
8930
Center-folding unit backup
error
Read and write data does not
match 3 times in succession.
Defective connec-
tor cable or poor
contact in the con-
nector.
Reinsert the connector. Also check for conti-
nuity within the connector cable. If none,
replace the cable.
CF main PWB (YC7) and DF main PWB
(YC9)
Improper installa-
tion EEPROM.
Check the installation of the EEPROM and
remedy if necessary.
Defective CF main
PWB.
Replace the CF main PWB and check for
correct operation.
Code
Contents
Causes
Check procedures/
corrective measures
Service Manual Y113480-7
Summary of Contents for DF-790
Page 1: ...SERVICE MANUAL Options DF 790 BF 730 MT 730 AK 730 PH 7C Code Y113480 7...
Page 4: ...This page is intentionally left blank...
Page 10: ...This page is intentionally left blank...
Page 32: ...3NB 3ND 3N0 3NK 1 2 14 3 Remove tape and pad Figure 1 2 18 Tape Pad Service Manual Y113480 7...
Page 34: ...3NB 3ND 3N0 3NK 1 2 16 This page is intentionally left blank Service Manual Y113480 7...
Page 53: ...3NB 3ND 3N0 3NK 1 3 19 This page is intentionally left blank Y113480 7 Sevice Manual...
Page 87: ...3NB 3ND 3N0 3NK 1 4 34 This page is intentionally left blank Y113480 7 Sevice Manual...
Page 93: ...3NB 3ND 3N0 3NK 1 5 6 This page is intentionally left blank Y113480 7 Sevice Manual...
Page 127: ...3NB 3ND 3N0 3NK 2 2 10 This page is intentionally left blank Y113480 7 Sevice Manual...
Page 149: ...3NB 3ND 3N0 3NK 2 3 22 This page is intentionally left blank Y113480 7 Sevice Manual...