Replaceable Parts

Assembly and Disassembly Guidelines

Removing the Power Meter RAM Battery (BT1)

 

1.

Remove the A2 processor assembly as described on page 5-10.

 

2.

Remove the A2J1 link to disconnect the battery from the rest of the circuitry.

 

3.

Verify the battery protection circuitry by:

 

 

n ensuring that there are no electrical short circuits across the battery

 

 

terminals.

 

 

n ensure that there are no voltages present which could apply a charging

 

 

voltage.

 

4.

Once the protection circuit has been verified remove the battery. The battery

 

 

is siliconed to the assembly. It may be necessary to remove it using a scalpel.

 

5.

Store the battery individually in an anti-static (dissipative) bag or suitable

 

 

non-conductive packaging.

 

6.

After replacing the battery secure it using a tie wrap. This should be secured

 

 

from the top of the A2 processor assembly. The recommended tie wrap part

 

 

number is 1400-1154.

 

7.

Replace the A2J1 link.

 

 

WARNING

This power meter uses a lithium battery which may explode if

 

mishandled. The battery should not be subjected to short circuit of the

 

battery terminals or to excessive heat.

Do not recharge this battery or dispose of it by burning. Check local country regulatory requirements on the disposal of lithium batteries.

5-14

Agilent E4418B/E4419B Service Guide

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Agilent Technologies e4418b, e4419b manual Removing the Power Meter RAM Battery BT1, Battery terminals or to excessive heat