Sharp LC-20SH3H Service Manual page 17

» 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.).
CN1
Main PWB
1
SC1701
R/C, LED PWB
Step
1 QCNW-C458WJQZ
2 QCNW-C461WJQZ
3 QCNW-C461WJQZ
4 QCNW-D402WJQZ
5 QCNW-D444WJQZ
6 QCNW-D445WJQZ
7 QCNW-D449WJQZ
Operation PWB
SC4201
5
SC2003
2
P7301
SC1201
4
3
SC2002
SC2001
P3902
P3901
6
SC3601
SC4001
Sub PWB
Part No.
Extension Cable 80-pin Main (SC1701)-LCD panel (CN1)
Extension Cable 15-pin Main (SC1201)-Sub (P7301)
Extension Cable 15-pin Main (SC2001)-Sub (P3901)
Extension Cable 23-pin Main (SC2002)-Sub (P3902)
Extension Cable 5-pin Operation (SC4201)-Main (SC2003)
Extension Cable 8-pin R/C, LED (SC4001)-Sub (SC3601)
Extension Cable 13-pin Inverter (SC6701)-Sub (P3601)
Inverter PWB
7
Inverter
PWB
SC6701
P3601
(Back Side)
8
Description
17
LC-20SH3H/M/X
LC-20SH4H/M/X
Main PWB
(Side-B)
Sub PWB
(Back Side)