Thermal Arc 500 - Page 5

TABLE OF CONTENTS (continued)TABLE OF CONTENTS
SECTION 5:
MAINTENANCE ....................................................................................... 5-1
SECTION 6:
TROUBLESHOOTING ................................................................................ 6-1
6.01 General ........................................................................................................... 6-1
6.02 Basic Troubleshooting .................................................................................... 6-1
6.03 Troubleshooting Guide ................................................................................... 6-2
6.04 Power-Master 500 and 350 Block Diagram .................................................... 6-6
6.05 Power-Master 500P and 350P Block Diagram................................................ 6-8
6.06 Control Board Connector Signals For 830894 Main Control Board .............. 6-10
6.07 Power Circuit Tests....................................................................................... 6-13
6.08 Semiconductor Replacement Requirements ................................................ 6-14
6.09 Main Control Board ...................................................................................... 6-15
6.10 Control Circuit Tests ..................................................................................... 6-16
6.11 Calibration Procedure ................................................................................... 6-24
SECTION 7:
REPAIR PROCEDURES .............................................................................. 7-1
7.01 Output Diode Replacement:............................................................................ 7-1
7.02 IGBT Module Replacement: ............................................................................ 7-2
SECTION 8:
PARTS LIST .......................................................................................... 8-1
8.01 Equipment Identification................................................................................. 8-1
8.02 How To Use This Parts List ............................................................................ 8-1
8.03 External Panels ............................................................................................... 8-2
8.04 Base Parts ...................................................................................................... 8-4
8.05 Front Panel Parts (Power-Master 500 and 350) ............................................. 8-5
8.06 Front Panel Parts (Power-Master 500P and 350P)......................................... 8-6
8.07 PC Board Parts ............................................................................................... 8-8
8.08 Rear Panel Parts (Power-Master 500 and 350) .............................................. 8-9
8.09 Rear Panel Parts (Power-Master 500P and 350P)........................................ 8-10
8.10 Center Chassis Parts .................................................................................... 8-12