Service manual

13
LC-20C3U-S
Precautions at the time of the side B(back) service of Digital unit.
1. Remove only SC2001 of the FFC for connection between Digital unit(SC2001) and Analog unit(SC3403), and
connect the extended cable (QCNW-A556WJZZ) for service.
2. Remove only P2004 of the Connecting Cord for connection between Digital unit(P2004) and Analog unit(P3702),
and connect the extended cable (QCNW-A552WJZZ) for service.
3. Remove the FFC for connection between Digital unit(SC1203) and LCD panel unit, and connect the extended
cable (QCNW-A553WJZZ) for service.
4. Remove the FFC for connection between Digital unit(SC1202) and LCD panel unit, and connect the extended
cable (QCNW-A556WJZZ) for service.
5. Remove the FFC for connection between Digital unit(SC1201) and LCD panel unit, and connect the extended
cable (QCNW-A555WJZZ) for service.
6. Remove the R/C, LED unit.
6-1. Remove a lead from a wire holder.
6-2. Remove the R/C, LED unit fixing screws(1 pc.).
7. Remove the Digital unit fixing screws(2 pcs.), a substrate is reversed.
3
4
5
1
2
7
P6705
P3703
SC1201SC1202
P2004
SC2001SC2001
SC3403
P3702
P6706
P3704
P3602
P3601 P3501 P3502
P2003
P6705
SC1203
SC2001
SC3403
P6706
P3704
6-2
6-1
Wire Holder
Digital PWB
(Side B)
R/C, LED PWB
Step Part No. Description
1 QCNW-A556WJZZ Extention Cable 50-pin Digital (SC2001)-Analog (SC3403)
2 QCNW-A552WJZZ Extention Cable 5-pin Digital (SC2004)-Analog (P3702)
3 QCNW-A553WJZZ Extention Cable 30-pin Digital (SC1203)-LCD panel
4 QCNW-A556WJZZ Extention Cable 50-pin Digital (SC1202)-LCD panel
5 QCNW-A555WJZZ Extention Cable 20-pin Digital (SC1201)-LCD panel