VOLTAGE AND RESISTANCE MEASUREMENTS

TM 11-5805-451-15

Table 5-4 provides a voltage and resistance chart to aid in troubleshooting

the Express Orderwire Multidirection Unit.

NOTES

1. All voltage readings are made with the POWER switch on and

with all printed wiring boards, except the amplifier board on

which measurement is being made, in their connectors. The

amplifier board on which voltage is being measured should be

placed in the board extender, and the board extender inserted

in the proper amplifier board connector. Voltage measure-

ments are then made at terminals provided on the board ex-

tender.

2. Resistance measurements are made at connector points on the

printed wiring boards with the boards removed from the unit.