CUTMASTER 102
Manual 0-4998
SERVICE
5-21
B. PCB 1 Input Diode D1 Test
1. Using an ohmmeter perform the tests in the chart:
Input Diode Module D1 on PCB 1
Test points located on PCB 2
Meter (+)
Meter (-)
Indication
80A_AC1
MTH 1
Forward Biased Diode
80A_AC2
MTH 1
Forward Biased Diode
80A_AC3
MTH 1
Forward Biased Diode
MTH 1
80A_AC1
Reverse Biased Diode
MTH 1
80A_AC2
Reverse Biased Diode
MTH 1
80A_AC3
Reverse Biased Diode
MTH 7
80A_AC1
Forward Biased Diode
MTH 7
80A_AC2
Forward Biased Diode
MTH 7
80A_AC3
Forward Biased Diode
80A_AC1
MTH 7
Reverse Biased Diode
80A_AC2
MTH 7
Reverse Biased Diode
80A_AC3
MTH 7
Reverse Biased Diode
MTH 7
MTH 1
2 Forward Biased Diodes
C. PCB 5 Input Diode D1 Test
1. Using an ohmmeter perform the tests in the chart:
Input Diode Module D1 on PCB 5
Test points are located on PCB 2
Meter (+)
Meter (-)
Indication
40A_AC1
PMTH 1
Forward Biased Diode
40A_AC2
PMTH 1
Forward Biased Diode
40A_AC3
PMTH 1
Forward Biased Diode
PMTH 1
40A_AC1
Reverse Biased Diode
PMTH 1
40A_AC2
Reverse Biased Diode
PMTH 1
40A_AC3
Reverse Biased Diode
PMTH 4
40A_AC1
Forward Biased Diode
PMTH 4
40A_AC2
Forward Biased Diode
PMTH 4
40A_AC3
Forward Biased Diode
40A_AC1
PMTH 4
Reverse Biased Diode
40A_AC2
PMTH 4
Reverse Biased Diode
40A_AC3
PMTH 4
Reverse Biased Diode
PMTH 4
PMTH 1
2 Forward Biased Diodes
D. PCB 2 Capacitor / Relay Test
1. Using an ohmmeter perform the tests in the chart:
INPUT CAPACITORS
PCB 2
Meter +
Meter -
Indication
MTH 2
MTH 4
Charging
MTH 8
MTH 7
Charging
Most meters will show a charging action. Initially a low
resistance will be shown and then the resistance will start
to increase. If the meter probes are reversed the reading
will decrease to zero, then start charging in the opposite
polarity.
2. Using an ohmmeter perform the tests in the chart:
INPUT VOLTAGE SELECTION RELAYS
PCB 2
Meter +
Meter -
Indication
MTH 7
MTH 4
Charging
MTH 8
MTH 2
Charging
MTH 8
MTH 4
Charging
E. PCB 1 IGBT Test
1. Disconnect transformer wire from PCB 2 Terminal PRI1
(A).
2. Using an ohmmeter check continuity between the fol
-
lowing points:
PCB 1 Q1
Test points located on PCB 2
Meter (+)
Meter (-)
Indication
PRI 1
MTH 2
Forward Bias
PRI 1
MTH 4
Capacitor Charging
MTH 2
PRI 1
Capacitor Charging
MTH 4
PRI 1
Forward Bias
PRI 2
MTH 2
Forward Bias
PRI 2
MTH 4
Capacitor Charging
MTH 2
PRI 2
Capacitor Charging
MTH 4
PRI 2
Forward Bias
3. Using an ohmmeter check continuity between the fol
-
lowing 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
Содержание CUTMASTER 102
Страница 4: ...This Page Intentionally Blank ...
Страница 20: ...CUTMASTER 102 INTRODUCTION Manual 0 4998 2T 4 This Page Intentionally Blank ...
Страница 26: ...CUTMASTER 102 INSTALLATION Manual 0 4998 3T 2 This Page Intentionally Blank ...
Страница 30: ...CUTMASTER 102 OPERATION Manual 0 4998 4 4 This Page Intentionally Blank ...
Страница 46: ...CUTMASTER 102 OPERATION Manual 0 4998 4T 16 This Page Intentionally Blank ...
Страница 80: ...CUTMASTER 102 SERVICE Manual 0 4998 5 34 This Page Intentionally Blank ...
Страница 91: ...CUTMASTER 102 Manual 0 4998 PARTS LIST 6 9 A 07994_AB 1 4 2 3 5 6 7 8 9 10 12 11 10 13 ...
Страница 105: ...CUTMASTER 102 Manual 0 4998 APPENDIX A 5 This Page Intentionally Blank ...
Страница 111: ...This Page Intentionally Blank ...