On-Board Switch/Slit Land Description; Board - Sony HDW-750 Maintenance Manual

1-10. On-Board Switch/Slit Land Description

For the function of the on-board switches on the APR-59 board, KY-475 board and SW-1030/1031/1038
board, refer to the Operation Manual.
m
. Never change the settings of the switches that are specified as "Factory-use".
. The number in parenthesis ( ) indicates the address on the circuit board.
1-10-1. AT-143 Board
1
2
3
S3
4
S2
S1
5
C B A
Ref. No. Address Name
S1-1 (C-5/B side) SERVICE mode
_
S1-2 to 7 (C-5/B side)
S1-8 (C-5/B side) NV-RAM reset
HDW-750/750CE V1
AT-143 board (B side)
Description
Selects to display or not to display the SERVICE
menu.
ON : To display the SERVICE menu
OFF : Not to display the SERVICE menu
Factory-use
ON : NV-RAM reset
OFF : Normal operation
When the main power of the unit is turned on
while the switch S1-8 is being set in ON, NV-RAM
(IC51)/DCP-28 board is reset.
Upon completion of resetting, be sure to return the
switch S1-8 to OFF.
m
. Resetting the NV-RAM erases adjusted value
of the SERVICE menu and all of the users'
unique values (such as the MENU settings and
the AUTOWHITE/BLACK data).
. Upon completion of resetting the NV-RAM,
be sure to perform the automatic black balance
adjustment using the AUTO W/B BAL switch
(on the front block).
When the AUTO W/B BAL switch is kept pressed
in the BLK position, the display changes as follows.
[BLACK SET] → [BLACK BAL] → [BLACK SET].
Keep pressing the switch until the second [BLACK SET]
is displayed.
. After resetting, return the switch S1-8 to OFF.
If not, the adjustment data is not saved in the
NV-RAM hereafter.
1-10. On-Board Switch/Slit Land Description
Factory setting
OFF
OFF
OFF
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