Thermal Arc 300GTSW Pro-Wave, Service Manual

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TABLE OF CONTENTS (continued) TABLE OF CONTENTS
6.08 High Frequency (HF) START Circuit Test ........................................................ 6-7
6.09 Subsystem Test Preparation ........................................................................... 6-8
6.10 Main Circuit Breaker (MCB) Replacement Procedure ...................................... 6-8
6.11 Main PCB1 Gate Drive Enable Signal Test ..................................................... 6-10
6.12 Lift Start Test ................................................................................................ 6-12
6.13 Gas Control Test .......................................................................................... 6-12
6.14 High Frequency Test .................................................................................... 6-12
6.15 Main Circuit Board (PCB1) Replacement Procedure ..................................... 6-13
6.16 Gaining Access to Front Panel Circuit Board (PCB6) WK-3988 ..................... 6-18
6.17 Front Panel PCB6 (WK-3988) Test Point Voltages ........................................ 6-19
6.18 Input Power Selector Switch Test ................................................................. 6-20
6.19 Front Panel Circuit Board (PCB6) Replacement Procedure ........................... 6-20
6.20 Current Transformer Test Procedure ............................................................. 6-22
6.21 Current Transformer Replacement Procedure ............................................... 6-22
6.22 Power Control Assembly .............................................................................. 6-23
6.23 Power Control Assembly (PCA) Test Procedures .......................................... 6-23
6.24 PCA Input Diode Bridge (D1) Test Procedure ............................................... 6-24
6.25 PCA Input Diode Bridge (D1) Replacement Procedure ................................. 6-24
6.26 PCA IGBT Inverter Test Procedure ................................................................ 6-26
6.27 PCA IGBT Inverters Q1 and Q2 Replacement Procedure ............................... 6-28
6.28 PCA IGBT Inverter Q3/Q4 Replacement Procedure ....................................... 6-30
6.29 PCA Output Diodes (D2-D5) Test Procedure ................................................. 6-32
6.30 PCA Output Diodes (D2 - D5) Replacement Procedure ................................. 6-33
6.31 PCA Thermal Sensor (TH1) Test Procedure .................................................. 6-36
6.32 Thermal Sensor (TH1) Replacement ............................................................. 6-37
6.33 Auxiliary Transformer (T3) Test Procedure .................................................. 6-38
6.34 Auxiliary Transformer (T3) Replacement ...................................................... 6-39
6.35 Main Transformer Assembly (T1 and T2) Test Procedure ............................. 6-40
6.36 Main Transformer (T1 and T2) Assembly Replacement Procedure ............... 6-41
6.37 Output Inductor Assembly Test and Replacement Procedures ..................... 6-42
6.38 Fan Assembly Replacement Procedure ......................................................... 6-44
6.39 HF Unit Test and Replacement Procedures ................................................... 6-46
6.40 HF Coupling Coil Test and Replacement Procedures ..................................... 6-48
6.41 Gas Solenoid Valve Replacement Procedure ................................................. 6-50
6.42 IGBT Inverter Q3/Q4 Driver Circuit Board (PCB8) Test Procedure ................ 6-51
6.43 IGBT Inverter Q3/Q4 Driver Circuit Board (PCB8) Replacement Procedure .. 6-52
6.44 Sequence Timing Diagrams .......................................................................... 6-53
SECTION 7:
PARTS LIST ........................................................................................... 7-1
7.01 Equipment Identification ................................................................................. 7-1
7.02 How To Use This Parts List ............................................................................. 7-1
7.03 Parts List ........................................................................................................ 7-2
7.04 Parts Pictures ................................................................................................. 7-6