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Service Kit Parts Installation

Page 4 

April 2021

DSY-UM-02594-EN-04

Electrical Symbols

Function

Direct 

Current

Alternating 

Current

Earth 

(Ground)

Protective 

Ground

Chassis 

Ground

Symbol

SERVICE KIT PARTS INSTALLATION

DANGER

REMOVE (DE-ENERGIZE) ANY EXTERNAL POWER FROM THE UNIT BEFORE REMOVING 

THE SCREW COVER FROM THE ENCLOSURE. FAILURE TO DO SO CAN BE DANGEROUS. 

Service Kit Number B290-901 contains:
• 

One programmed PCB assembly

• 

Four screws, Phillips pan head, #4 × 1/2, zinc/steel

1�  Loosen the 2 enclosure captive screws and open the cover�

2�  Remove the four screws holding the board in place�

3�  Tilt the board slightly to access the ribbon cable�

4�  Remove the ribbon cable from the J4 connector on the display side of the board�

5�  Press the tab on the battery connector plug to release it from the P2 battery lead  

connector socket�

6�  Cut and discard the tie wrap that holds the battery�

OTE: 

N

You will need to replace the tie wrap that holds the battery in place�

7�  Remove the battery and set it aside�

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