Thermal Dynamics CUTMASTER 102 Service Manual

cutmaster 102
SERVICE 5-22 Manual 0-4998
3. Using an ohmmeter check continuity between the
following points:
PCB 1 Q2
Test points located on PCB 1* & PCB 2
Meter (+) Meter (-) Indication
PRI 3* MTH 8 Forward Bias
PRI 3* MTH 7 Capacitor Charging
MTH 8 PRI 3* Capacitor Charging
MTH 7 PRI 3* Forward Bias
PRI 4* MTH 8 Forward Bias
PRI 4* MTH 7 Capacitor Charging
MTH 8 PRI 4* Capacitor Charging
MTH 7 PRI 4* Forward Bias
F. PCB 5 IGBT Test
1. Disconnect transformer wires from 40 Amp PCB
5 terminal PRI 1 (A).
2. Using an ohmmeter perform the following
checks:
PCB 5 - Q1
Test points located on PCB 2 AND PCB 5*
Meter (+) Meter (-) Indication
PRI 1* PMTH 1 Forward Bias
PRI 1* PMTH 2 Capacitor Charging
PMTH 1 PRI 1* Capacitor Charging
PMTH 2 PRI 1* Forward Bias
PRI 2* PMTH 1 Forward Bias
PRI 2* PMTH 2 Capacitor Charging
PMTH 1 PRI 2* Capacitor Charging
PMTH 2 PRI 2* Forward Bias
3. Disconnect transformer wire from 40 Amp PCB
5 terminal PRI4 (C).
4 Using an ohmmeter perform the following
checks:
PCB 5 – Q2
Test points located on PCB 2 AND PCB 5*
Meter (+) Meter (-) Indication
PRI 4* PMTH 3 Forward Bias
PRI 4* PMTH 4 Capacitor Charging
PMTH 3 PRI 4* Capacitor Charging
PMTH 4 PRI 4* Forward Bias
PRI 3* PMTH 3 Forward Bias
PRI 3* PMTH 4 Capacitor Charging
PMTH 3 PRI 3* Capacitor Charging
PMTH 4 PRI 3* Forward Bias
G. PCB 1 Output Diode D3 Test
1. Disconnect transformer wires from Main PCB 1
terminal SEC1.
2. Using an ohmmeter perform the following
checks:
PCB 1 D3
(Test points located on PCB 1* & PCB 2)
Meter (+) Meter (-) Indication
CHOKE1 SEC1 Forward Bias
CHOKE1 SEC2 Forward Bias
SEC1 CHOKE1 Reversed Bias
SEC2 CHOKE` Reversed Bias
WORK1 SEC1 Reversed Bias
WORK1 SEC2 Reversed Bias
SEC1 WORK1 Forward Bias
SEC2 WORK1 Forward Bias
H. PCB 5 Output Diode D2 Test
1. Disconnect transformer wires from Main PCB 5
terminal SEC1.
2. Using an ohmmeter perform the following
checks::
PCB 5 – D2
Test points located on PCB 5
Meter (+) Meter (-) Indication
CHOKE1 SEC1 Forward Bias
CHOKE1 SEC2 Forward Bias
SEC1 CHOKE1 Reversed Bias
SEC2 CHOKE1 Reversed Bias
+OUT_1 SEC1 Reversed Bias
+OUT_1 SEC2 Reversed Bias
SEC1 +OUT_1 Forward Bias
SEC2 +OUT_1 Forward Bias
I. PCB 1 Pilot IGBT Test
1. Disconnect wire E35 from Main PCB 1 terminal
TIP1.
2. Using a mutlimeter with a diode test scale, place
the positive probe on PCB 1 terminal TIP1 and
the negative probe on PCB 1 terminal WORK1.
and check for a forward biased diode reading.
3. If the test reveals a failed component, replace
Main PCB 1. If no problem is found, reconnect
wire to Main PCB.

Thermal Dynamics CUTMASTER 102 Specifications

General

Brand	Thermal Dynamics
Model	CUTMASTER 102
Category	Welding System
Language	English