Testing the gun, Motor check, Testing the potentiometer – MK Products Prince XL User Manual
Page 21: Testing the micro switch

Prince
®
XL/Spool Gun Owner's Manual - Page 14
A
F
G
E
D
C
B
"W" Clocked
Amphenol Connector
Viewed from front of connector
Testing The Gun
Motor Check
Remove the gun connector from the cabinet.
Using the gun Amphenol, check the resistance across pins “A” and “B” (motor
leads). The resistance across the motor should be between 5-10 ohms.
If an open circuit or short exist, check the motor leads and motor
independently.
Testing the Potentiometer
Using the gun Amphenol, check the resistance across pin “D” (wiper) and pin
“C”. The resistance should vary from 0 - 5K ohms.
Check the resistance across pin “D” (wiper) and pin “G”. The resistance
should vary from 5K - 0 ohms.
Testing the Micro Switch
Using the gun Amphenol, check for continuity across pins “E” and “F” when
the trigger is pressed.