1-2. Note in Replacing the TG Board
1-2. Note in Replacing the TG Board
When replacing the TG-121 or TG-163 board with a new one, remove the PROM on the new board and
replace it with the PROM that was mounted on the former TG-121 or TG-163 board.
TG-121 board (B side) : IC2
TG-163 board (A side) : IC11
Note in Replacing a PROM
To remove a PROM, remove its socket frame.
This socket frame is so fragile. When removing the socket frame, therefore, it is recommended to use a
special removing tool listed below. If it is not available, use a small slotted screwdriver or similar item as
a substitute for it.
To remove the socket frame by using a screwdriver, proceed as follows.
IC socket removing tool: Sony part No. J-6394-110-A
Socket frame:Sony part No. 1-540-194-12
Removing a socket frame (by using a screwdriver)
Insert the screwdriver as shown in the figure and push it lightly in the direction of the arrow to unhook
the frame socket.
Screwdriver
Socket frame Claws
Claws
PROM
TG-121 boardTG-163 board
IC2IC11
1-2 (E)BVW-300/300A |
ACEC
