Sony Tektronix AWG2021 Service Manual page 192

Troubleshooting
Use this procedure to
troubleshoot the power
supply module.
Is the PRINCIPAL
POWER SWITCH in
the on (in) position?
Yes
No
Is line
fuse ok?
Yes
Is there
90-250 VAC at
J1 pins 1 and 3 on the
power supply module
(see Figure 6-30)?
Yes
Are the
secondary voltages
within specification
(see Table 6 5,
Figure 6 32, and
Figure 6 33)?
Yes
Return to the primary toubleshooting procedure.
Figure 6-28: Troubleshooting Procedure 1
6-56
No
Switch the PRINCIPAL
POWER SWITCH to the
on (in) position?
Switch the PRINCIPAL
POWER SWITCH to the off
(out) position. Replace the
fuse. Switch the PRINCIPAL
POWER SWITCH to the on (in)
position (see Figure 6-29).
Is there
No
90-250 VAC at the
AC Inlet?
Yes
Replace the AUX Power board (page 6-37).
No
Replace the power supply module (page 6 39).
Power Supply Module
Disconnect the cable from
Does the
Yes J1 on the power supply
fuse blow
module (see Figure 6-30).
again?
No
Replace the power
No
Is there
power at the
line cord and
outlet?
Yes
Replace the AC Inlet (page 6-37).
Replace the fuse.
Replace the
AUX Power
Yes
Does the
board
fuse blow?
(page 6-37)
and the cables
going to it.
No
supply module.
No
Fix the power problem.
AWG2021 Service Manual