Inspect Cables; Test Using A Controller - Agilent Technologies 8719ET Service Manual

Digital Control Troubleshooting
Front Panel Troubleshooting (A1/A2)
Table 6-1 Front-Panel Key Codes (Continued)
Decimal
Number
Chan 1
48
49
50
51
52
53
54
55

Inspect Cables

Remove the front panel assembly and visually inspect the ribbon cable that connects the
front panel to the motherboard. Also, inspect the interconnecting ribbon cable between the
front panel keyboard (A1) and the front panel processor (A2). Make sure the cables are
properly connected. Replace any bad cables.

Test Using a Controller

If a controller is available, write a simple command to the analyzer. If the analyzer
successfully executes the command, the problem is either the front panel processor (A2) or
the ribbon cable (W17) that connects the front panel processor (A2) to the motherboard
(A17).
6-16
LED Pattern
Chan 2 R L
RF Network Analyzers
Key
T S
softkey 1
softkey 2
softkey 3
softkey 4
softkey 5
softkey 6
softkey 7
softkey 8
8719ET/20ET/22ET
8719ES/20ES/22ES
Service Guide