9.4Replacing Electronics Module or PROM, Continued

Procedure, continued

Table 28 Replacing Electronics Module or PROM, Continued

Step

5

Action

Remove two retaining screws and carefully pull Daughter PWA straight up to unplug it from Main PWA.

 

Flex Tape

Plastic

Main PWA

Connector

Bracket

Screw

Power

 

 

 

 

Connector

PROM

 

Daughter PWA

Location

 

 

 

Temperature

 

Write

Input

PWA

Connector

Protect

 

Connector

Jumper

PWA

 

 

 

 

Connector

 

 

Screw

 

 

Screw

6

With component side of main PWA facing you, use an IC extraction tool to remove plug-in PROM.

We recommend that you use a ground strap or ionizer when handling the plug-in PROM, since electrostatic discharges can cause PROM failures.

7

 

 

If you are replacing the…

Then…

 

 

 

Electronics module

go to Step 8

 

 

 

PROM

go to Step 9

 

 

 

 

 

 

 

 

 

 

 

Continued on next page

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Image 117
Honeywell SMV 3000 user manual If you are replacing the… Then…