HP (Hewlett-Packard) HP 85660B ユーザーズマニュアル

For location of hardware and cables referred to in this procedure, see Figure 2.

1. Remove front panel from RF Section. (See A5 Front Panel Section for front panel removal

procedure.)

2. 

 Replacement

a. Slightly loosen connectors 

 

 and 

b. Unsolder wires from the coaxial switch.

1 (brown) wire from input 

3 (orange) wire from input 

2 (red) wire from input 

c. Release coaxial switch   by removing two screws 

d. Remove coaxial switch from three cables by completely disconnecting at connectors 

 and 

e. Resolder three wires to new coaxial switch.

f. Connect three cables to coaxial switch 

 

 and 

 Do not tighten connectors.

g. Attach new coaxial switch to instrument with two screws 

h. Tighten connectors to coaxial switch.

3. 

 Replacement

a. Disconnect connectors   and   and remove 

 BPF from mounting clips.

b. Install new 

 BPF in mounting clips and reconnect connectors.

4. Replace front panel. (See A5 Front Panel Section for front panel replacement procedure.)

A6 3