Agilent Technologies 1670G Series Service Manual page 132

Troubleshooting
To use the flowcharts
Troubleshooting Flowchart 4
C H A R T 1
4
C H A R T 4
Perform front
panel keyboard
self test.
Yes
Pass self test?
N o
Check signal
input to keyboard
Keyboard cable
R e p l a c e C P U
Yes
N o
Input signals OK?
board assembly
continuity OK?
Yes
N o
Repl ace
keyboard E N D
a s s e m b l y
5–6