Agilent Technologies 4339B - Check Procedure References; Check 1, DC-DC Converter Output Voltage; DC-DC Converter Output Voltage Check; DC-DC Converter Output Voltages (Connected)

Check
Procedure
References
Refer
to
the
corresponding
check
procedure
.
Each
check
procedure
is numbered
the same
as in
Figure
4-8
for
quick
reference
.
Check
1,
DC-DC
Converter
Output
V
oltage
1.
Remove
the
cover
referring
to
\Cover
Removal"
in
Chapter
3.
2.
Turn
on
the
4339B
.
3.
Using
a
multimeter
,
check
to
see
if the
voltages between
the test
pads
(TP
s),
shown
in
Figure
4-9
,
on
A1
Main
Board
Assembly
are in
the ranges
listed in
T
able
4-1
.
4.
If
passed,
proceed
to
\Check
2,
LCD
Displays Anything?",
otherwise proceed
to \Check
10,
Fuse
and
Line
Switch
".
Figure 4-9. DC-DC Converter Output V
oltage Check
Table 4-1. DC-DC Converter Output V
oltages
(Connected)
Test P
ad (+) T
est P
ad (
0 ) Range
9(\+5") 8 (\GND") 5.1 6 0.2 V
7 (\+12") 5 (\COM") 12 6 0.6 V
6(\ 0 12") 5 (\COM") 0 12 6 0.6 V
4-12 Troubleshooting