Thermal Arc PRO-WAVE 300 TSW, Service Manual

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PRO-WAVE 300TSW
8-8 August 10, 2005
8.06 Control PCB PCB5 (Wk-4919)
Control PCB circuit description.
Control Display and user interface drive PCB.
Circuit Function Parts Used
Control circuit IC20
Sequence circuit IC20
Protection circuit IC20
Model selection circuit DIP Switch DSW1, DSW2
CN1
IC20
VRD-ON/OFF
CN3
CN4
CN10
CN6
CN7
CN8 CN5 CN2
Art # A-05579
Figure 8-5: Control PCB WK-4919
Connector Pin Value Description
CN1 1-7
CN2 1 0/5V input power detection
2 0/5V
3 +5V
4 0/5V send data
5 0/5V receive data
6 0V GND
7 0/5V output short detection
8 0V GND
9 0/12V gas valve drive signal
10 0/5V
11 0/12V HF drive signal
12 3V peak primary current signal
13
2VDC as
Io=100A output current detection
Control PCB PCB5 WK-4919 UO6