Check Main Input Rectifier - Thermal Arc Fabricator 211i Service Manual

FABRICATOR 211i
DIODE Testing
DIODE V7 & V7-1
DIODE T18, T19, T20, T21
DIODE T14, T15, T16, T17

5.08 Check Main Input Rectifier

Art # A-10752
Input Rectifier Testing
AC1 to DC+
AC2 to DC+
AC1 to DC-
AC2 to DC-
Table 5-9 Input Rectifier, Multimeter set to measure Diode Voltage
Measurements may be made directly onto the main input rectifier. AC1 and AC2 may be measured from the pins on
the mains supply plug with the main power switch set to the ON position.
TROUBLESHOOTING
Multimeter Lead Placement
Positive meter lead to testpoint 10
Negative meter lead to testpoint 11
Positive meter lead to testpoint 12
Negative meter lead to testpoint 13
Positive meter lead to testpoint 14
Negative meter lead to testpoint 15
Table 5-8 Diodes, Multimeter set to measure Diode Voltage
Multimeter Lead Placement
Positive meter lead to 16
Negative meter lead to testpoint 18
Positive meter lead to 17
Negative meter lead to testpoint 18
Positive meter lead to testpoint 19
Negative meter lead to testpoint 16
Positive meter lead to testpoint 19
Negative meter lead to testpoint 17
5-8
TROUBLESHOOTING
Diode Voltage
0.2 – 0.8 VDC
0.2 – 0.8 VDC
0.2 – 0.8 VDC
Diode Voltage
0.2 – 0.8 VDC
0.2 – 0.8 VDC
0.2 – 0.8 VDC
0.2 – 0.8 VDC
Manual 0-5158