Miller Auto-Line Invision 352 MPa - Power Interconnect Board (PC2) - Power Off Checks (Effective With MH474077 U)

Always check unit before applying power (see Sections 8-2 thru 8-11).
TM-246193 Page 61Invision 352 MPa
8-30. Power Interconnect Board (PC2) - Power Off Checks (Effective With MH474077U)
Power Interconnect Board PC2 DMM Positive Lead DMM Negative Lead DMM Diode DMM Ohms
Pre-Charge Resistor R14 R14 Bottom R14 Top N/A 40
SCR Gate Resistor R10 R10 Left R10 Right N/A 10 - 16.5
SCR Gate Resistor R11 R11 Left R11 Right N/A 10 - 16.5
SCR Gate Resistor R12 R12 Left R12 Right N/A 10 - 16.5
Pre-Charge Diode D5 AC3 R14 Top 0.20 - 0.90 N/A
Pre-Charge Diode D6 AC2 R14 Top 0.20 - 0.90 N/A
Pre-Charge Diode D7 AC1 R14 Top 0.20 - 0.90 N/A
Boost Gate Protection Diode D12 D12 Left D12 Right N/A 100k
Inverter Gate MOSFET Q1 Q1-S (Source) Q1-D (Drain) 0.20 - 0.90 N/A
Inverter Gate MOSFET Q2 Q2-S (Source) Q2-D (Drain) 0.20 - 0.90 N/A
Inverter Gate Protection Diode D2 D2 Left D2 Right N/A 100k
Inverter Gate Protection Diode D3 D3 Left D3 Right N/A 100k
Snubber Gate Protection Diode D9 D9 Left D9 Right N/A 100k
Thermistor PTC1 Left PTC1 Right N/A 25 - 60 at 25°C
(77°F)
Notes