Sharp LC-20SH4U, Service Manual

Page: 8 / 54

LC-20SH4U
8
SUPPLEMENT
»
Precautions at the time of the side-B(back) service of main, sub and Inverter unit.
1. Remove the FPC for connection between Main unit (SC1701) and LCD panel (CN1), and connect the extended
cable (QCNW-C458WJQZ) for service.
2. Remove only SC1201 side of the lead from between Main unit (SC1201) and Sub unit (P7301), and connect the
extended cable (QCNW-C461WJQZ) for service.
3. Remove only SC2001 side of the lead from between Main unit (SC2001) and Sub unit (P3901), and connect the
extended cable (QCNW-C461WJQZ) for service.
4. Remove only SC2002 side of the lead from between Main unit (SC2002) and Sub unit (P3902), and connect the
extended cable (QCNW-D402WJQZ) for service.
5. Remove the FFC for connection between Main unit (SC2003) and Operation unit (SC4201), and connect the
extended cable (QCNW-D444WJQZ) for service.
6. Remove the FFC for connection between Sub unit (SC3601) and R/C, LED unit (SC4001), and connect the
extended cable (QCNW-D445WJQZ) for service.
7. Remove only SC6701 side of the lead from between Sub unit (P3601) and Inverter unit (SC6701), and connect
the extended cable (QCNW-D449WJQZ) for service.
8. Remove the PWB unit fixing screws (main unit: 2 pcs., sub unit: 2 pcs., inverter unit: 3 pcs.).
Step Part No. Description
1 QCNW-C458WJQZ Extension Cable 80-pin Main (SC1701)-LCD panel (CN1)
2 QCNW-C461WJQZ Extension Cable 15-pin Main (SC1201)-Sub (P7301)
3 QCNW-C461WJQZ Extension Cable 15-pin Main (SC2001)-Sub (P3901)
4 QCNW-D402WJQZ Extension Cable 23-pin Main (SC2002)-Sub (P3902)
5 QCNW-D444WJQZ Extension Cable 5-pin Operation (SC4201)-Main (SC2003)
6 QCNW-D445WJQZ Extension Cable 8-pin R/C, LED (SC4001)-Sub (SC3601)
7 QCNW-D449WJQZ Extension Cable 13-pin Inverter (SC6701)-Sub (P3601)
SC2001
P3901
SC2002
SC1201
SC1701
SC2003
SC6701
P3601
P7301
P3902
SC3601
CN1
SC4201
SC4001
1
2
5
7
6
4
3
8
Main PWB
Operation PWB
Inverter PWB
Inverter
PWB
(Back Side)
Main PWB
(Side-B)
Sub PWB
(Back Side)
Sub PWB R/C, LED PWB