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1-4. Modifying Board
1-4-4. Modifying SG-226 Board
Perform the following modification only when the suffix number of the SG-226 board is -11, -12 or -13.
Parts Required
Description
Jumper wire
Sony bond SC608LVZ
Modification Procedures
1. Remove the SG-226 board.
2. Solder the jumper wire between pin 119 of IC65 and pin 36 of IC71.
3. Stick the jumper wire with Sony bond as shown in the figure. (Shaded
1
2
TO Pin 36/IC71
3
4
5
1-4-5. Replacing ROM
Replace the two ROMs IC24 on the SG-226 board and IC26 on the IF-569 board with new ROMs
supplied with HKC-7080.
By replacing the ROMs, the contents of setup menu changes. For more details regarding the setup menu,
refer to Section 3.
1-4-6. Switch Setting of AT-104 Board
Open the left side panel, and set the switch S1 on the AT-104 board as shown in the figure.
1-8 (E)
Q'ty
Remarks
1
l = 100 mm
_
Sony Part No. 7-432-912-52
A
B
C
144
109
1
108
IC65
36
73
37
72
SG-226 (A SIDE)
portion)
C
B
A
11
1
12
44
IC71
22
34
23
33
SG-226 (B SIDE)
1
2
TO Pin 119/IC65
3
4
5
HKC-7080
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