Backup Battery Replacement - Sony CCU-590 Maintenance Manual

3-7. Backup Battery Replacement

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When replacing the lithium battery, ensure that the marks
+ and _ are correctly oriented.
If connected incorrectly, injuries and damage to objects in
the periphery may result from tears and leakage of fluid.
When replacing, be sure to use the specified part.
BATTERY, LITHIUM CR-2032 : ! 1-528-174-11
If the trouble below occurs when the CCU-590/590P is
used, replace the lithium battery on the AT-155B board.
Trouble
When the date on "C13" page of the CCU CONFIGURA-
TION menu is incorrect.
Replacement
1. Open the front panel and detach the cover.
(Refer to Section 3-4-1, steps 1 and 2.)
2. Raise the levers and remove the AT-155B and DM-
140 boards.
Lever
AT-155B board
CCU-590/P/V1(E)
3. Remove the lithium battery upward.
AT-155B board
Lithium battery
3-15