MK Products CobraMig 260 PS/Feeder - Manual (Page 27)

CobraMig 260 Owner's Manual - Page 21
FLOW CHART
NOTE : The 115VAC on Cobra I Main P.C. Board is protected by
Fuse F3. If F3 continually blows, unplug J4 (Brake Solenoid), J7
(Slave Motor) from the P.C. Board. Replace the fuse and retrigger. If
fuse does not blow, isolate the problem by plugging in J4 and J7 one
at a time until the fuse blows.
Resistance Check :
a) Slave Motor
J7-6 to J7-1 = 150 ohm
J7-4 to J7-2 = 150 ohm
b) Brake Solenoid
J4-1 to J4-2 = 80 ohm
2 2
PROBLEM AREA
COBRA: MAIN BOARD, SLAVE MOTOR OR BRAKE SOLENOID
SYMPTOM
F3 FUSE ON COBRA I IS BLOWN WHEN TORCH IS TRIGGERED
START
GO TO FLOW CHART # 3
COBRA MAIN BOARD, F1 FUSE IS BLOWN
YES
PLUG IN J4
RE-TRIGGER TORCH
NO
NO YES
PLUG IN J7
RE-TRIGGER TORCH
NO YES
F3 FUSE BLOWN
COBRA MAIN BOARD
RE-TRIGGER TORCH
UNPLUG CONNECTORS
J4, BRAKE SOLENOID
J7, SLAVE MOTOR
IS COBRA MAIN BOARD
F3 FUSE OK ?
IS COBRA I MAIN BOARD
F3 FUSE OK ?
SLAVE MOTOR IS OK
IS COBRA MAIN BOARD
F3 FUSE OK ?
BRAKE SOLENOID IS
DEFECTIVE
BRAKE SOLENOID IS OK
SLAVE MOTOR IS
DEFECTIVE