Dwyer PSX2 - Manual (Page 164)

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15. REPLACEMENT OF BUILT-IN BATTERY
(1) Turn off the power supply of main unit.
(2) Remove the rubber guard.
(3) Locate 4 screws at the corners of the back cover diagram label.
Remove the 4 screws and cover as shown.
(4) Remove the battery and replace it with the appropriate service part.
Note) Install a combination of the main unit side terminal and the battery side terminal.
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• Do not give the equipment a shock
• Do not disassemble or modify the equipment
• Do not use the equipment with the built-in battery removed.
CAUTION
Bulletin F-9-PUX2