Memory Ic With Backup Battery; Memory Backup Battery Replacement - Sony SRW-5000 Maintenance Manual

1-16. Memory IC with Backup Battery

Memory IC (IC206/CP-382, IC116/SS-95) with backup
battery is used on the CP-382 board and the SS-95 board.
This IC is used to store the setting data of setup menu, etc.
Besides it has an RTC (Real Time Clock) function, which
is also used in the VTR.
Owing to this battery, even if the external power is cut off,
this IC can maintain the stored data and the RTC continues
operating.
However, if the battery life comes to end with the external
power was cut off, memory can not maintain the stored
data and the RTC is failing to function.
In the memory, the following data is stored. When the
battery is dead, or replaced with a new one, resetting
current menu, menu banks, and calender/clock is required.
For details on how to reset the current menu and menu
banks, refer to the operation manual supplied with the unit.
When the battery is dead or replaced, error log data and
shot-mark detection list data are all cleared.
IC116/SS-95 board
. Current menu
. Menu banks 1 to 8
. Calendar/Clock
. ID-code data
. CUE menu setting data
. REMOTE 2 PARALLEL I/O (50P) setting data
. Error log data
. Network information
IC206/CP-382 board
. RGB gain adjustment value of the color display
. POWER ON BANK RECALL setting data
Backup battery
Refer to Section 1-17.
SRW-5000/5500
1-17. Memory Backup Battery
Replacement
The CP-382 board and the SS-95 board contain the part
equipped with the lithium battery for the memory backup.
This part is mounted on the IC206/CP-382 board (NV-
RAM) and IC116/SS-95 board (NV-RAM/RTC) to be
backed up.
c
When replacing the part, be sure to use the specified one
below.
Replacement with a part other than the specified part will
result in fire hazards and electric hazards.
Replacement part
Part description: M4T28-BR12SH1 (lithium battery
integrated crystal oscillator)
! 1-767-156-11
Part No.:
Recommended replacement period:
Every seven years
Replacement
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When replacing the battery, ensure that a mark on the
battery is correctly oriented.
For IC206 on the CP-382 board
1. If possible, take notes of the following setting data:
. RGB gain adjustment value of the color display
. POWER ON BANK RECALL setting data
2. Remove the lower control panel from the unit.
(Refer to Section 1-6.)
3. Remove the eight screws, and remove the rear cover of
the lower control panel.
Rear cover
Lower control panel
B3 x 6
B3 x 6
1-37