Agilent Technologies 1670G Series Service Manual page 130

Troubleshooting
To use the flowcharts
Troubleshooting Flowchart 2
CHART 2
2
No
Is the RUN
indicator on?
Y e s
Are the instrument No
fans running?
Y e s
R e m o v e p o w e r
supply. Do the power
from the
supply voltage check
i n s t r u m e n t .
Check that the
video data cable
i s s e a t e d o n C P U
b o a r d a n d o n
LCD display.
Seat the video data
No
Is the cable
c a b l e o n C P U b o a r d
seated?
a n d o n L C D d i s p l a y .
Y e s
D o t h e L C D
display signals
test in Chapter 5.
Does the test
Y e s
pass?
No
5–4
Is the power
E n s u r e t h e p o w e r
No
suply fan cord is properly
c o n n e c t e d .
running?
Y e s
S u s p e c t t h e p o w e r
Do all test points
in Chapter 5.
R e p l a c e L C D
Monitor
R e p l a c e C P U
Board in the
i n s t r u m e n t
Is the power cord
properly connected?
Replace power
No
pass?
Y e s
R e p l a c e
instrument fan
CHART 2
No R e c o n n e c t t h e
power cord
Y e s
s u p p l y
E N D