Use the troubleshooting procedures in table 6-1 for routine per-
formance testing as well as troubleshooting.
This section provides adjustment procedures for the power supply
and OVP modules.
Application of input dc voltage without connecting
voltage sense lines to voltage to be sensed may
result in damage to the converter module.
Power Supp ly Voltage Adjustment Procedures.
Connect power supplies and digital voltmeter (dvm) to power
Press POWER ON pushbutton one time and ensure lighted
portion of pushbutton comes on.
Hold load switch on power supply test set in FULL LOAD posi-
tion, and set dvm to read dc volts.
Place test switch in position corresponding to converter
Remove potentiometer cap and adjust potentiometer on con-
verter module for dvm reading within tolerance listed in
switch and replace potentiometer cap when adjustment is
Rotate test switch to next position and repeat steps (3),
(4) and (5). Check voltages for all test switch positions,
adjust as necessary.
Press POWER ON pushbutton once and ensure lighted portion of
pushbutton goes off.
Converter modules with complementary outputs (PS4
in PP-7293 and PP-7294) need not be adjusted twice;
however, complementary voltages must track to
within 150 mV.