Rectifier Voltage Adjustment Opm - Nortel DMS-100 Series Maintenance Manual

13-70 OPM routine maintenance procedures
Rectifier voltage adjustment
OPM
(continued)
Summary of rectifier voltage adjustment in an OPM
Measure the
rectifier voltage
with a meter
Rectifier voltage adjustment in an OPM
At the OPM cabinet
1
297-8361-550 Standard 04.01 September 2000
Adjust rectifier to correct
voltage
N
Y
Voltage is
–52.0 V, ± .03 V?
Use a voltmeter with a minimum 2% accuracy to measure the rectifier output
voltage.
If voltage
is not equal -52.0 Vdc, ± 0.3 ς
is equal -52.0 Vdc, ± 0.3 ς
This flowchart summarizes the
procedure.
Use the instructions that follow
this flowchart to perform the
procedure.
Perform MEASURE
LOADB from MAP
display
Y
Is voltage –51 V
or –52 V?
N
End of procedure
Do
step 2
step 3
Replace LTU or
check every 3
months
End of procedure