Cautions When Replacing The Lithium Battery; Replacing Procedure - Sony HDCU2500 Maintenance Manual

1-8.

Cautions when Replacing the Lithium Battery

The lithium battery is installed on the AT-167A board. This lithium battery is used to back up the real-time clock (RTC).
RTC stops operating when the battery life expires. Replace the battery and reset DATE/TIME in the DATE (C15) of
the CCU CONFIGURATION menu. (Refer
Part No.
1-528-174-72
CAUTION
Ensure that the battery is installed with + and – poles connected to the correct terminals. An incorrect
connection may cause an explosion or leakage of fluid.
1-8-1.

Replacing Procedure

1. Remove the AT-167A board. (Refer to
2. Replace the lithium battery (CR2032) on the AT-167A board.
Push the lithium battery with
an insulated stick to detach it
from the battery case.
AT-167A board
3. Install the removed parts by reversing the steps of removal.
4. Set DATE/TIME in the DATE (C15) of the CCU CONFIGURATION menu. (Refer
HDCU2500
to"3. Menu Settings".)
Name
Lithium Battery (CR2032 type)
"4-5-1. Installing/Removing Plug-in Boards on the Front
Usage
For internal clock
Side".)
to"3. Menu Settings".)
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