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HDW-750/750CE V1
In the case of ROM on the FP-121 board and SS-92 board:
(1) Check to see that the message “COMPLETE !”
appears indicating that the version indication has
changed.
7.
Turn off the main power and then back on to start the
unit for upgrading of the ROM to take place.
03
O
ROM VERSION
COMPLETE !
AT : Ver 1.00
SS : Ver 1.01
FP : Ver 1.00
EQ : Ver 1.00
→
1-24-3. When the ROM-28 Board Is Used for
Version Upgrading (AT-143 Board)
Required tool : ROM-28 board
(Sony part No. : A-8326-017-A)
n
The upgrading program must have already been saved in
the ROMs (IC2 and IC3) on the ROM-28 board before.
(For details of saving the upgrading program, contact your
local Sony Sales Office/Service Center.)
1.
Open the inside panel assembly.
(Refer to Section 1-5.)
2.
Insert CN1 of the ROM-28 board to CN6 on the AT-
143 board.
3.
Set the switch S1 on the ROM-28 board as shown in
the illustration.
4.
Turn on the main power. Then the data stored in the
ROM-28 board are transferred to the ROM on the AT-
143 board in 10 and a few seconds.
5.
Turn off the main power and remove the ROM-28
board.
6.
Close the inside panel assembly.
(Refer to Section 1-5.)
7.
Turn on the main power to start the unit for upgrading
of the ROM to take place.
ROM-28 board
CN1
AT-143 board (CN6)
S1
Switch knob
1-24. Upgrading the ROM Version