Thermal Dynamics CUTMASTER Service Manual

CUTMASTER 40MM
SERVICE 5-24 Manual 0-5085
M. PCB 1 IGBT Test. (With PCB 2 removed
from unit)
1. Using an ohmmeter perform the following checks:
PCB 1 Q1
Test points located on PCB 1
Meter(+) Meter(-) Indication
PRI 1 TP1 ForwardBiasedDiode
PRI 1 TP5 Reverse Biased Diode
TP1 PRI 1 Reverse Biased Diode
TP5 PRI 1 ForwardBiasedDiode
PRI 2 TP1 ForwardBiasedDiode
PRI 2 TP5 Reverse Biased Diode
TP1 PRI 2 Reverse Biased Diode
TP5 PRI 2 ForwardBiasedDiode
PCB 1 Q2
Test points located on PCB 1
Meter (+) Meter (-) Indication
PRI 3 TP4 Forward Biased Diode
PRI 3 TP8 Reverse Biased Diode
TP4 PRI 3 Reverse Biased Diode
TP8 PRI 3 Forward Biased Diode
PRI 4 TP4 Forward Biased Diode
PRI 4 TP8 Reverse Biased Diode
MTH 8 TP4 Reverse Biased Diode
MTH 7 TP8 Forward Biased Diode
3. If the test reveals a failed component, replace
Main PCB 1.
N. PCB 5 IGBT Test. (With PCB 2 removed
from unit)
1. Using an ohmmeter perform the following checks:
PCB 5 - Q1
Test points located on PCB 5
Meter (+) Meter (-) Indication
PRI 1 PMTH 1 Forward Biased Diode
PRI 1 PMTH 2 Reverse Biased Diode
PMTH 1 PRI 1 Reverse Biased Diode
PMTH 2 PRI 1 Forward Biased Diode
PRI 2 PMTH 1 Forward Biased Diode
PRI 2 PMTH 2 Reverse Biased Diode
PMTH 1 PRI 2 Reverse Biased Diode
PMTH 2 PRI 2 Forward Biased Diode
PCB 5 – Q2
Test points located on PCB 5
Meter (+) Meter (-) Indication
PRI 4 PMTH 3 Forward Biased Diode
PRI 4 PMTH 4 Reverse Biased Diode
PMTH 3 PRI 4 Reverse Biased Diode
PMTH 4 PRI 4 Forward Biased Diode
PRI 3 PMTH 4 Forward Biased Diode
PRI 3 PMTH 3 Reverse Biased Diode
PMTH 4 PRI 3 Reverse Biased Diode
PMTH 3 PRI 3 Forward Biased Diode
2. If the test reveals a failed component, replace
40Amp PCB 5.
NOTE
Many of the signals listed in the PCB information to
follow will be low voltage signals that will be in one
of two states: +12VDC (High) or 0VDC (Low) with
respect to PCB common. When a signal name is
preceded by the “/” mark, it denotes that the signal
is an active low. For example:
/OVERTEMP – This signal is normally High but
when an over temperature fault exists, this line will
change state to a Low.

Thermal Dynamics CUTMASTER Specifications

General

Brand	Thermal Dynamics
Model	CUTMASTER
Category	Welding System
Language	English