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4-9. Backup Battery Replacement
4-9-2. B302 (M4T28-BR12SH1) on the SY-283
Board Replacement
8
6
5
7
B302 (on IC302)
n
The battery B302 (M4T28-BR12SH1) backs up the various
setting parameters of the menus. This data is lost at the
time when the battery is removed.
Input/output parameter information of the insert-
ed board
(The parameters that can be set on the control protocols
such as NTSC/PAL, bit rate, video/audio input/output
switching, audio level setting, IP address, etc.)
Before replacing the battery, write down the setting
parameter information of the boards.
After replacements, set the parameters again from the
menu screen of the application software.
Replacement Part
Part name :
Lithium battery with built-in crystal oscilla-
tor
Part number : 1-767-156-11
4-16 (E)
4
3
2
1
Removal Procedures
1. Remove the SY-283 board. (Refer to Section 4-10-8.)
2. Insert a tip of a flat-blade screwdriver between IC and
A
battery to remove the battery.
B
M4T28-BR12SH1
C
D
E
F
G
IC
H
Mark
Installation Procedures
1. Align a new battery with the mark of IC, and insert it.
2. Install the SY-283 board in its original slot.
Setting After Replacement
Download and re-set again the parameter information of
the boards from the application software.
Mark
Flat-blade screwdriver
VSR-2000
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