Verification And Remedy To Failures Without Indication Codes; Cooling Fan (Fan1) Failure" (Fan Is Not Rotating.); No Weld Output - Thermal Arc ARCMASTER 200 S Service Manual

11
200S ADVANCED TROUBLESHOOTING
3
Verification and Remedy to
Failures without Indication
Codes
Refer to Note on Section 11.02.
3.1 "Cooling Fan (FAN1) Failure"
(Fan is not rotating.)
Cause
Occurs when the cooling fan (FAN1) is defective,
damaged or the driving voltage is incorrect.
Verification/Remedy
a) Verify the cooling fan, FAN1.
 Inspect the condition of the fan blades and all
peripheral parts. Clean the fan blades and all
peripheral parts if covered with dust. Clean-
ing and removing dust from the fan blades
once every 6 months in a normal environ-
ment is recommended. Extremely dusty envi-
ronments will require more frequent cleanings.
 Verify that there are no wiring harnesses
entangled inside the fan, confirm that the har-
nesses do not have any brakes in the wire or
damaged connectors.
 Replace wiring harnesses if you find any bro-
ken connectors or damaged wiring har-
nesses.
 Replace the fan if there are any broken,
cracked or missing fan blades. Refer to sec-
tion 12.3-11.
b) Verify the wiring harness between the cooling
fan (FAN1) and CN2on PCB1 (WK-5713).
 Verify a secure connection of the harness to
CN2 on PCB1.
c) Verify the drive circuitry of the cooling fan
(FAN1) on PCB1.
 Verify the drive circuitry of the cooling fan
(FAN1) on PCB3.
 Refer to section 11.5-3.
 Replace PCB1 if necessary. Refer to section
12.3-11.

3.2 "No weld output"

Cause
Occurs when the remote connector (CON1) or
associated circuitry is defective, damaged, or the
TIG torch cable is defective.
Verification/Remedy
CAUTION
Read and understand this entire section before
proceeding. Extreme personal harm and test
equipment damage will occur if the procedures are
not performed accurately.
a) Verify the remote connector (CON1).
(Applies to LIFT TIG mode.)
 Verify a secure between the remote connec-
tor (CON1) and the TIG torch cable.
 Verify a secure connection of the harness
and the connections between the remote
connector (CON1) and CN1 on PCB1 (WK-
5713) are all correct and there are no open
circuits.
 Contact the manufacture if you find any bro-
ken connectors or damaged wiring har-
nesses.
 Verify the proper pins-outs of the remote con-
nector at the TIG Torch side. (Refer to sec-
tion Operating Manual.)
 Verify that there is no open circuit on the
remote connector at TIG Torch side.
 In equipment for remote control use, Verify
the pin specification of a connector. (Refer to
section in Operating Manual.)
b) Verify the condition and connections of the
welding cable, the stick rod holders and the
ground clamp. (Applies to all welding modes.)
 Verify a secure connection of the welding
cable, stick rod holders, ground clamp and
dense connectors and there are no open cir-
cuits.
c) Verify the no-load voltage (OCV).
(Applies to STICK mode.)
 Refer to the section "Verification of No-load
voltage (OCV)" in the page 11-13.
 If performing the "No-Load Voltage Failure"
procedure does not rectify the failure, per-
form the following tests in the sequence
11 – 5