Nv-Ram/Eeprom; Initialization And Adjustment - Sony BVW-55 Maintenance Manual

1-5. NV-RAM/EEPROM

Describes ICs that require the initialization and adjustment of data after parts are replaced.
Board name Ref. No.
DEC-97 IC34
DM-121 IC909
IC1812
KY-446 IC108
SDI-23 IC457
SV-206 IC404
SY-272 IC1
TG-191 IC406

1-5-1. Initialization and Adjustment

Explains how to initialize and adjust the data when adjustment and set data items are lost during IC
replacement.
1. IC34 on DEC-97 board
(1) Adjust all menu items of the maintenance mode below.
(For the adjustment, refer to Section 7.)
. A24: INPUT CF DETECT
. A25: DEC VR or A26: DEC VR(LOOP)
2. IC909 and IC1812 on DM-121 board
. IC909
(1) Set initial values to all menu items of the maintenance mode below, then adjust them.
(For the setting and adjustment, refer to Section 7.)
. A32: DM VR1
. A33: DM VR2
. A34: DM VR3
. A35: DM VR4
. A36: DM VR5
. A38: TBC VR2
. IC1812
(1) Set initial values to all A37: TBC VR 1 menu items of the maintenance mode below, then adjust
them.
(For the setting and adjustment, refer to Section 7.)
3. IC108 on KY-446 board
(1) Reset the sub-LCD menu data.
(For the setting, refer to the operation manual.)
BVW-55 P2
Address IC type
C3 (Side A) EEPROM
M7 (Side A) NV-RAM
C6 (Side A) NV-RAM
E8 (Side B) EEPROM
E1 (Side A) EEPROM
D8 (Side A) NV-RAM
A1 (Side A) NV-RAM
C4 (Side A) EEPROM
Description
DEC board adjustment data
DM board adjustment data
Sub-LCD menu set data
SDI board adjustment data
Servo data, hours meter data and
serial No. data
Main menu, error logger and
calender/clock set data
TG board adjustment data
1-5. NV-RAM/EEPROM
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