Chapter 3 Replacing Assemblies

To Remove the Front Bezel

5Remove the BNC nuts (H3), shown in Figure 3-5, from the front panel using the 14-mm deep-socket spin tight.

P/O A2 Display Board Cable

J6

H1

W1

H1

H3

H1

Figure 3-5. Front Bezel Removal

6For Counters with the optional 1.5 GHz or 3.0 GHz channel (Option 015 or 030), pull cable W1 out of the front bezel as shown in Figure 3-5. For the optional 5.0 or 12.4 GHz channel, remove knurled nut.

CAUTION

When reassembling A3 (Option 015/030) Assembly, ensure that cable W1

 

is not placed or folded on top of the input circuits of A1 Motherboard

 

Assembly or is tucked behind A3 as the Counter may start reading or

 

measuring noise.

 

 

3

Assembly-Level Service Guide

3-7

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Image 155
HP 181A manual Front Bezel Removal