Infinite TRANSTECTOR 700 AV/T Series Owner's Manual page 24

TROUBLESHOOTING CONTINUED
3. Measure the following resistance on each power module. There are 7 per phase or 21 for all three
Quadruple Output Power Conditioner | Owners Manual
phases. *Refer to the circuit diagrams received with your unit.
Note: When checking the power module assembly, if more than one defective power module is present
TROUBLESHOOTING (continued)
it will appear as if all the power modules are defective. If this is the case, the individual power
module must be isolated from the power transformer.
3. Measure the following resistance on each power module. There are 7 per phase or 21 for all
three phases. *Refer to the circuit diagrams received with your unit.
Note: When checking the power module assembly, if more than one defective power module is present
it will appear as if all the power modules are defective. If this is the case, the individual power module
A. K1-1 to K2-1 thru K1-7 to K2-7=High resistance, 1 Meg Ohm.
must be isolated from the power transformer.
B. K1-1 to G1-1 thru K1-7 to G1-7=10 to 90 Ohms.
K1-1 to G2-1 thru K1-7 to G2-7=1 Meg Ohm.
A. K1-1 to K2-1 thru K1-7 to K2-7=High resistance, 1 Meg Ohm.
C. K2-1 to G2-2 thru K2-7 to G2-7=10 to 90 Ohms.
B. K1-1 to G1-1 thru K1-7 to G1-7=10 to 90 Ohms.
K2-1 to G1-1 thru K2-7 to G1-7=1 Meg Ohm.
K1-1 to G2-1 thru K1-7 to G2-7=1 Meg Ohm.
D. G1-1 to G2-1 thru G1-7 to G2-7=1 Meg Ohm.
C. K2-1 to G2-2 thru K2-7 to G2-7=10 to 90 Ohms.
K2-1 to G1-1 thru K2-7 to G1-7=1 Meg Ohm.
4. Replace any defective power mods. This may require removing the shunt and loosening the K1 bus from
D. G1-1 to G2-1 thru G1-7 to G2-7=1 Meg Ohm.
all the power modules to get the defective power module out. Use only equivalent hardware and heat
sink grease when replacing power modules.
4. Replace any defective power mods. This may require removing the shunt and loosening the K1 bus
from all the power modules to get the defective power module out. Use only equivalent hardware and
5. If a resistance measure is questionable, a more thorough test will assure an SCR is good or bad by using
heat sink grease when replacing power modules.
the following test procedure.
5. If a resistance measure is questionable, a more thorough test will assure an SCR is good or bad by
A. using the following test procedure. Completely isolate SCR under test by removing all connections to the device.
A. Completely isolate SCR under test by removing all connections to the device.
B. Hook up the following test circuit to each individual SCR.
B. Hook up the following test circuit to each individual SCR.
C. Plug in SCR tester. With Switch #1 open light bulb should be off. If not, replace SCR.
C. Plug in SCR tester. With Switch #1 open light bulb should be off. If not, replace SCR.
D. Close Switch #1. Light bulb should illuminate to about 3/4 brilliance. If not, replace SCR.
D. Close Switch #1. Light bulb should illuminate to about 3/4 brilliance. If not, replace SCR.
6. Re-assemble the power module assembly, make sure all connections are tight.
6. Re-assemble the power module assembly, make sure all connections are tight.
***DO NOT CONNECT THE SEMICONDUCTOR FUSES, WIRES OR FAN WIRES AT THIS POINT.***
***DO NOT CONNECT THE SEMICONDUCTOR FUSES, WIRES OR FAN WIRES AT THIS POINT.***
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