Contents Sorensen DCS Series 3kW Supplies
5.2.5
Output Current Shunt, Shunt Amplifier, and Down Programmer
(A4 PCB) ..............................................................................................5-2
5.2.6
Control, Programming, OVP, Shutdown, Monitoring, and
Auxiliary Supply Circuits (A2 PCB).......................................................5-3
5.2.7
Front Panel Displays and Local Operating Mode Controls (A1 PCB) ..5-4
5.3
Detailed Circuit Descriptions............................................................................5-4
5.3.1
AC Input and RFI Filter Circuit (A5 PCB) .............................................5-5
5.3.2
Input Rectifier and Inrush Limiting Circuit (A6 PCB) ............................5-5
5.3.3
PWM, Sync Circuit, Power Transformer Drive Circuit,
and Power Transistor Bridge (A3 PCB)................................................5-5
5.3.4
Power Transformer, Output Rectifiers, Output Filter Inductor
and Capacitor, and Down Programmer Circuit (A4 PCB, A7 PCB,
A8 PCB, and Power Stage Assembly) .................................................5-6
5.3.5
Auxiliary Supply, OVP, Control, Programming, Monitor Circuit
(A2 PCB) ..............................................................................................5-7
5.3.6
Front Panel Displays and Controls (A1 PCB).....................................5-14
SECTION 6 SERVICING THE 3000 WATT SYSTEM SUPPLY............ 6-1
6.1
Introduction ......................................................................................................6-1
6.2
General Maintenance and Repair ....................................................................6-1
6.2.1
Periodic Service ...................................................................................6-1
6.2.2
Servicing Precautions...........................................................................6-2
6.2.3
Parts Replacement and Repairs ..........................................................6-2
6.2.4
Unusual or Erratic Operation................................................................6-2
6.3
Calibrating for Programming Accuracy ............................................................6-2
6.3.1
Voltage Programming Circuit Calibration .............................................6-3
6.3.2
Current Programming Circuit Calibration .............................................6-3
6.4
Replaceable Parts............................................................................................6-4
6.4.1
Parts Replacement and Modifications..................................................6-4
6.4.2
Ordering Parts......................................................................................6-4
6.4.3
DCS 3kW Parts Lists by Model Number ..............................................6-5
6.4.4
DCS 3kW Parts Lists............................................................................6-6
vi Operation Manual
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