TROUBLESHOOTING FLOW CHARTS. - TM-11-5820-401-34-30249

T M 11-5820-401-34-3/0967-LP-432-3060

4-13. TROUBLESHOOTING FLOW CHARTS.

CHART 4-1

NO Audio Troubleshooting

(Sheet 1 of 25)

NOTES

1. Do not confuse audio tone with noise, Audio

tone is 1 -kHz signal.

2. The assumption here is that audio is scratchy

or fades in and out one or more times as volume

control is turned. A very weak audio tone is

diagnosed in Audio Power Troubleshooting.

3. If 0.16 vac is present, Monitor Amplifier A5100

is working, indicating a valid received audio

from A4300. Therefore, 25.5-vdc power

supply to prior stages and to lamp can be

assumed ok.

4-33