BENDIXKing KY 96A, Maintenance Manual

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B
KY 96A, KY 97A
Rev 5, Apr 2003 MM 006-05674-0005.dwd Page 5-9
Input a 100 uV standard audio test signal into the unit. Disable the compres-
sor by grounding pin 10 of J97A1, J96A1. Monitor the 4 ohm audio output
while removing modulation.
5.3.4.D. Audio Frequency Response:
5.3.4.D.1 Comm 350 Hz ______ dB
1 kHz ______ dB
2.5 kHz ______ dB
Input a 100 uV standard audio test signal into the unit.
5.3.4.D.2 Aux1 350 Hz ______ dB
1 kHz ______ dB
2.5 kHz ______ dB
Insert a 1 kHz 4.47 V (40 mW @ 500 ohms) audio signal into the Aux1 input.
5.3.4.E. Audio Distortion: (Optional test requiring distortion analyzer)
5.3.4.E.1 Comm 350 Hz ______ % (NMT 15%)
1 kHz ______ % (NMT 15%)
2.5 kHz ______ % (NMT 15%)
5.3.4.E.2 Aux1 350 Hz ______ % (NMT 15%)
1 kHz ______ % (NMT 15%)
2.5 kHz ______ % (NMT 15%)
5.4 ALIGNMENT PROCEDURE
The following procedure is for aligning a KY 96A, KY 97A to meet the minimum per-
formance specifications. If partial alignment is desired, use only the initial control set-
tings that apply to the section being aligned.
5.4.1 Initial Control Settings
R176 Noise Squelch Max CW
R267 Modulation Max CW
R184 RF AGC Max CCW
R221 Sidetone Mid Range
R1009 Mic Gain Mid Range
R801 Volume Control Max CCW (off)
R801 Squelch Test Switch Out (test position)
5.4.2 Voltage Regulator Test
Connect the unit to RF load and apply power. Advance the volume control
R802 (R902) CW to turn on and set to MID-RANGE.
5.4.2.A. Read the voltage at TP103 and adjust R189 for 9 volts +/- 0.1 volt.
5.4.2.B. Read the voltage at TP104 and observe 5.0 volts +/- 0.25 volt.