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OM-2065 / Operation and Maintenance Manual
90SB51 / Spec. 7015-3 / Frequency Converter
Taking Transistor Module Resistance Measurements
Volts/
Manufacturer
Amperes
& Part Number
Rating
Fuji Part No.
2D1100Z-120
1200-V 100-A
Motorola Part No.
MJ100BX120
1200-V 100-A
For taking these resistance measurements, use an ANALOG ohmmeter, set to X1 scale. If unsure of
output polarity, verify with another voltmeter.
Values shown are approximate, and are measured with the transistor removed from all other circuitry.
Chapter 3-4
Page 2
(Placement of Ohmmeter Leads)
Figure 2
Direction (Polarity) of Measurement & Approx.
Values of Resistance for a Good Transistor
Collector-
Emitter,
Forward
infinity
infinity
Resistance Values for Transistor Module
Figure 3
Collector-
Base-
Emitter,
Emitter,
Reverse
Forward
8
45
7
>100
Base-
Emitter
Reverse
near
infinity
>100
Nov 01/90
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