JVC RV-NB50B Service Manual page 22

<Key board>
(Lead free solder used in the board (material : Sn-Ag-Cu, melting point : 219 Centigrade))
(reverse side)
C401
R408
C405 C406
C408
C407
D440
D441
C441
C440
D603
R601
C433
L431
R433
R432 C432
L430
R405
R406
D430
D431
2-10
C402
6 VCC
R423
5 GND R425
C410
4 BKLG
JR401
3 LCD DATA
2 LCD WR
1 LCD CS
C411
C414
JR402
C413
JR404
JR403