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1-4. Modifying Board
1-4-1. Modifying VDA-31 Board
Parts Required
Prepare the following resistors because they are not supplied with the unit.
Description
Res, metal chip 15 Z
Res, metal chip 18Z
Res, metal chip 30 Z
Res, metal chip 180 Z
Res, metal chip 820 Z
Res, metal chip 13 kZ
Res, metal chip 1 kZ
Res, metal chip 2.2 kZ
Modification Procedures
1. Remove the VDA-31 board.
2. Desolder the following eleven resistors:
R113, R122, R213, R215, R216, R217, R218, R219, R229, R313, R322
3. Solder an 1 kZ metal film resistor at the trace of R113.
4. Solder a 2.2 kZ metal film resistors at the traces of R122, R229 and R322.
5. Solder a 13 kZ metal film resistor at the trace of R213.
6. Solder an 180 Z metal film resistor at the trace of R215.
7. Solder an 820 Z metal film resistors at the traces of R216 and R313.
8. Solder a 30 Z metal film resistor at the trace of R217.
9. Solder a 15 Z metal film resistor at the trace of R218.
10. Solder an 18 Z metal film resistor at the trace of R219.
5
4
3
2
A
B
C
D
E
R113
F
R218
G
R216
R217
R213
R313
H
VDA-31 (A SIDE)
HKC-7080
Q'ty
Sony Part No.
1
1-218-648-11
1
1-218-650-11
1
1-218-655-11
1
1-218-674-11
1
1-218-690-11
1
1-218-719-11
1
1-218-692-11
1
1-218-200-11
1
2
1
VDA-31 (B SIDE)
3
4
5
A
B
C
D
E
F
R122
R229
R215
G
R219
R322
H
1-4. Modifying Board
1-5 (E)
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