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TROUBLESHOOTING AND REPAIR
F-16F-16
LN-25™
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GAS SOLENOID VALVE AND CONTROL PC BOARD TEST
(FOR CODES ABOVE 10500 ONLY) (continued)
FIGURE F.7. – APPLIED VOLTAGE POLARITY.
WORK SENSING LEAD
POLARITY
SWITCH
ELECTRODE
CABLE
CONTROL PC BOARD SOLENOID CIRCUITRY
TEST
1. Apply at least 25 VDC but no more than 100
VDC to the LN-25™ from the electrode cable to
the work sensing lead. Make sure the polarity
switch is set to match the polarity of the
electrode cable. For example, if the electrode
cable is positive and the work sensing lead is
negative, set the polarity switch to positive. See
Figure F.7.