HP 54501A - Power Supply Voltages Check

6-14
. Power Supply Voltages Check
1 .

Remove top
cover from instrument .
2 .

Refer to
figure 6-10 for locations of power supply test points .
3 .

Check voltages on power supply test points
for voltages in figure 6-10 .
4 .

The power supply can
be isolated to check output voltages with the following steps .
a .

Remove
power cable from instrument .
b .

Disconnect cable W1 from power supply as in figure 6-10 .
.1taro .(
- ~ I  ,
k ti NRM
This
procedure is to be performed only by service-trained
personnel aware
of the
hazards involved (such as fire and electrical shock)
.
c .

Load +5 .15 V supply with resistor (see
Recommended Test Equipment in section 1) .
Use alligator clips to connect oneend of
the resistor to any pin 1-4, and the other end
to any pin 5-8 .
d .

Connect
power
cable
and check for voltages in table 6-1 .
WARNING
Corn +12V +12V -12V -5 .2V +3.5V
+5 .15V +5 .15V ADJ
mower Supply Test Points
HP 54501A SERVICE
6-17