Sharp LC-20SH4U Service Manual page 12

LC-20SH4U
» Precautions at the time of the side B(back) service of main, sub and Inverter unit.
1. Remove the FFC for connection between Main unit (SC1001) and LCD panel (CN1), and connect the extended
cable (QCNW-B784WJZZ) for service.
2. Remove the FFC for connection between Main unit (SC1000) and LCD panel (CN2), and connect the extended
cable (QCNW-A556WJZZ) for service.
3. Remove the FFC for connection between Main unit (SC1002) and LCD panel (CN3), and connect the extended
cable (QCNW-A555WJZZ) for service.
4. 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.
5. 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.
6. 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.
7. Remove the FFC for connection between Main unit (SC2003) and Operation unit (SC4201), and connect the
extended cable (QCNW-D444WJQZ) for service.
8. Remove the FFC for connection between Sub unit (SC3601) and R/C, LED unit (SC4001), and connect the
extended cable (QCNW-D445WJQZ) for service.
9. Remove only P6701 side of the lead from between Sub unit (P3601) and Inverter unit (SC6701), and connect the
extended cable (QCNW-D449WJQZ) for service.
10. Remove the PWB unit fixing screws (main unit : 2pcs, sub unit : 2pcs., inverter unit : 3pcs.)
Main PWB
1
CN1
R/C, LED PWB
Step
1 QCNW-B784WJZZ
2 QCNW-A556WJZZ
3 QCNW-A555WJZZ
4 QCNW-C461WJQZ
5 QCNW-C461WJQZ
6 QCNW-D402WJQZ
7 QCNW-D444WJQZ
8 QCNW-D445WJQZ
9 QCNW-D449WJQZ
Operation PWB
CN2 CN3
SC4201
7
2 3
SC1002
SC1000 SC2003
4
P7301
SC1201
SC1001
6
5
SC2002
SC2001
P3902
P3901
8
SC3601
SC4001
Sub PWB
Part No.
Extension Cable 30-pin Main (SC1001)-LCD panel (CN1)
Extension Cable 50-pin Main (SC1000)-LCD panel (CN2)
Extension Cable 20-pin Main (SC1002)-LCD panel (CN3)
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
9
Inverter
PWB
SC6701
P3601
(Side B)
10
Description
12
Main PWB
(Side B)
Sub PWB
(Side B)