ProArc CB-001 - Trouble Shooting Guide; Power Indicator Light Issues; Motor Motion Problems; Welding Action Unresponsiveness

2.1 TROUBLE SHOOTING GUIDE
SYMPTOMS
POSSIBLE CAUSES／REMEDIES
Power indicator light does
not illuminate.
A. Wrong selection of input power
：
Select the correct input power (110V or 220V)
B. Blown fuse
：
Check the circuitry and find out the blown. and then, replace fuse.
C. Input power switch malfunction
：
Check and replace the power switch.
D. Transformer has no output voltage
：
(1) Check if the input voltage, it should be AC110V/ 220V.
(2) Measure CN8 for Pin 1 & 3, there should be 24VAC, and pin 2 & 3
should be 18VAC, if one of the voltage is not correct,
please replace a
new transformer.
E. The flat cable is damaged
：
(1) Check relay board CN1 Pin 7 & 8, it should read 24VDC.
(2) Measure Front panel CN1 Pin 7 & 8, it should read 24VDC, if not,
replace the flat cable.
F. PB1 is damaged
：
Keep PB1 pressed and measure front panel PB1’s connection (CN1’
s Pin
7 & 8). If no connection, replace a new PB1..
Motor has no motion.
A. Motor coil is damaged
：
Use ohm meter to measure CM1 female plug pin 1&2 and It should give
you 2 ohm. If 2 ohm doesn't exist, replace the motor.
B. Motor has power input, but no motion
：
Measure CM1 male socket Pin 1 & 2 - if there is 6.5VDC, then replace a
new motor.
C. I/O board is damaged
：
(1) Check Relay board CN9 Pin 11&12, the reading should be about
6.5VDC voltage.
(2) Measure CM1 male socket Pin 1 & 2 - if there is no 6.5
VDC, replace a
new I/O board.
Welding action not
responsive.
A. Weld/Test switch is damaged
：
Switch to "Test" position and check if relay board D10 illuminates, if not,
please replace the front panel board.
B. Relay board is damaged.
Switch to "Test" position and check if relay board D10 illuminates, if yes
but has no action, please replace the relay board.
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