Tweco 42 CutMaster Service Manual - Manual (Page 5)

TABLE OF CONTENTS
SECTION 6:
TROUBLESHOOTING ................................................................................ 6-1
6.01 Basic Troubleshooting-Power Source Faults ................................................... 6-1
6.02 Checking Unit Before Applying Power ............................................................ 6-4
6.03 Tools Needed for Troubleshooting and Servicing ............................................ 6-4
6.04 Case Removal ................................................................................................. 6-5
6.05 Clear Cover Sheet Removal ............................................................................. 6-5
6.06 Visually Inspect ............................................................................................... 6-6
6.07 Preliminary DC Bus Measurement of the Main Inverter Board ........................ 6-6
6.08 Preliminary Check of the Main Inverter Board ................................................ 6-7
6.09 Check Main On / Off Switch ............................................................................ 6-8
6.10 Check Pressure Switch ................................................................................... 6-9
6.11 Check Regulator ............................................................................................ 6-9
6.12 Check Main Input Rectifier ............................................................................ 6-10
6.13 DC Bus Voltage Measurement ...................................................................... 6-10
6.14 Check of Control PCB ................................................................................... 6-13
6.15 Waveforms .................................................................................................. 6-16
6.16 Main Circuit Description .............................................................................. 6-17
6.17 Circuit Diagram ............................................................................................. 6-19
SECTION 7:
DISASSEMBLY PROCEDURE ....................................................................... 7-1
7.01 Safety Precautions for Disassembly ............................................................... 7-1
7.02 Control Board Removal ................................................................................... 7-2
7.03 Front Panel Assembly Removal ...................................................................... 7-4
7.04 Front Panel (Operator Interface) Circuit Board PCB3 Removal ....................... 7-5
7.05 Back Panel Removal ....................................................................................... 7-6
7.06 Power Switch S1 and Power Cord Removal ................................................... 7-7
7.07 Base Panel Removal ....................................................................................... 7-8
SECTION 8:
ASSEMBLY PROCEDURES .......................................................................... 8-1
8.01 Installing Base Board ...................................................................................... 8-1
8.02 Installing Back Panel ....................................................................................... 8-2
8.03 Installing Front Panel ...................................................................................... 8-4
8.04 Installing Main Control Panel and Clear Cover Sheet ...................................... 8-5
8.05 Installing Case ................................................................................................ 8-8
SECTION 9:
REPLACEMENT PARTS .............................................................................. 9-1
9.01 Introduction .................................................................................................... 9-1
9.02
Power Supply Replacement Parts ................................................................... 9-2
9.03 SL40 Torch Replacement Parts ....................................................................... 9-3
9.04 Optional Accessories ...................................................................................... 9-4
APPENDIX 1:
SL40 TORCH PIN-OUT DIAGRAM .................................................................. A-1