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6-1. Service Overview for Plug-in Board Replacement
6-1-1. Notes on Plug-in Board Replacement
. For the board replacements except plug-in boards, refer to the maintenance manual part 2, volume-1.
. The plug-in board to be installed needs the state with completing the factory adjustment or equivalent.
If not, perform the electrical adjustments and confirmations in according with instructions in the
maintenance manual part 2, volume-1.
. Never touch (move) the adjustment parts that are not described in Section 6.
If move these, requires to perform the electrical adjustments that are described in the maintenance
manual part 2, volume-1.
. Do not execute (change) the adjustment items (data) in the maintenance mode that are not described in
Section 6.
If the adjustment item (data) has been executed (changed) carelessly, do not save the data and turn off
the power of the DNW or execute "ALL DATA PREVIOUS" in each NV-RAM control menu. (Never
execute "SAVE ALL ADJUST DATA" of each NV-RAM control menu.)
. It is recommended to record the states before replacement on a copy of setting check sheet in Appendix
A.
In case of the change of setting in the adjustments and so on, this recorded setting check sheet is the
convenient when resetting the setting after the replacement.
. The SS-63 board of the board numbers 1-661-127-11 and 1-661-127-12 can not be used to the DNW-
A22/A22P.
. The DM-89 board of the service parts code suffix-A cannot be used to the DNW-A22/A22P.
. The TBC-23 board of the service parts code suffix-A cannot be used to the DNW-A22/A22P.
And the board numbers 1-648-543-13 and 1-648-543-14 among the TBC-23 board of the service parts
code suffix-B cannot be used to the DNW-A22/A22P in without completing the specified modification
to them. Please consult your local Sony Sales Office/Service Center in detail.
. Check that the state of 525/625 system is following state before starting the electrical adjustment.
For DNW-A22: 525/60 system
For DNW-A22P: 625/50 system
If not, switch the 525/625 system by the setup menu ITEM-013 : 525/625 SYSTEM SELECT in
according with Section 5-2-2 in the operation manual.
DNW-A22/A22P
Section 6
Replacement of Plug-in Boards
6-1
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