Detailed Fault Finding / Error Indicators - Thermal Dynamics CUTSKILL C-35C Service Manual

6.05 Detailed Fault Finding / Error Indicators

Problem
Air Indicator is on
intermitant tone
Torch doesn't Pilot and
the LD1 LED light on
the Control PCB is on
Torch doesn't Pilot and
the LD1 LED on the
Control PCB is not on
"CO" LED on Control
PCB comes on when
not transferring.
A. Diode Testing Basics
There are extremely dangerous voltage and power levels present inside this unit. Do not attempt to diagnose or repair
unless you have had training in power electronics measurement and troubleshooting techniques. Disconnect primary
power at the source before disassembling the power supply, torch, or torch leads. Discharge power at the H/V spark gap
using a metal tipped screw driver as shown:
Manual 0-4745
1 - Check air and electrical connections
and or audible to the internal air compressor
2 - Control PCB faulty
3 - Check the compressor relay
1 - Check torch consumables.
2 - Check all air supply related issues
before proceding.
3 - Check LD2 (EN) LED it should get
brighter with the torch trigger
depressed.
4 - Check OCV Voltage. If OCV Voltage
is OK check C/T 1 connection
Check all air supply related issues
before proceding.
Check Cable Connection on PCB
(CN10) and Current Sensor.
Art # A-07116
Check / Test
WARNING
6-5
Recommended Action
1 - If connections are good, return
to an authorized service center for
repair.
2 - Replace the Control PCB
3 - Replace the relay if bad.
1 - Replace torch consumables as
needed.
2 - Change air related items as
needed.
3 - If OCV is not OK, follow OCV
check procedures in section 6.04
4 - If CN9 connection is OK, replace
the Control PCB
If there are no air related issues,
replace the Control PCB
If connection and Current Sensor
are OK, replace the Control PCB
TROUBLE SHOOTING