Tektronix 1730 Series - Specific Troubleshooting Techniques; Power Supply; Troubleshooting Procedure

1730–Series Maintenance
6–8
CAUTION. Removing Components:
 !   !         
         
Specific Troubleshooting Techniques
The 1730–Series Waveform Monitor has two areas where ordinary troubleshoot-
ing techniques do not apply.
This instrument contains internal diagnostics for the serial port and the front–
panel LED indicators. Specific instructions for these diagnostics follow the
Power Supply troubleshooting procedure.
The power supply is of the high–efficiency type and requires a specific trouble-
shooting procedure and an isolation transformer to avoid personal danger or
instrument damage.
The 1730–Series power supply presents special troubleshooting problems, if a
fault occurs. Besides having a sizeable area where dangerous potentials can be
contacted, the type of circuitry employed can not be trouble shot by conventional
means.
WARNING. Read Instructions:
         !   

NOTE. Read Theory of Operation:
A review of the power supply Theory of Operation is recommended before
attempting repairs.
The equipment needed to troubleshoot the power supply:
H Digital Multimeter (DMM), with a diode check function
H Oscilloscope
H 0 to 20 VDC Variable Power Supply
Power Supply
Troubleshooting
Procedure