Heathkit AR-14 - Page 64

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DIFFICUL TY
Stereo signal garbled or
whistles.
Phase control does
not adjust properly.
Little or no FM
stereo separation.
Loud background noise.
No sound, dial lamps
do not light.
Sound ok; dial lamps
do not light.
No sound in either
channel.
No sound in one
channel only.
Page 57
POSSIBLE CAUSE
1. Check adjustment of transformer T7.
2. Shorted or open capacitor C46.
3. Open
capacitor C47.
1. Open or shorted coil LS.
2. Faulty part or wiring in Phase control and
switch circuits.
3. Shorted or open capacitor C45.
4. Improper adjustment of coil L7.
1. Not tuned to stereo program.
2. Pha se switch in the out position.
3. Misa dj ustment of transformer T7 and/ or
Phase control.
4. Improper operation of transistor Ql 1 or
Q12.
1.
FM signal too weak; a better antenna is need -
ed.
2. Check adjustment of coil L6.
3. Open or shorted capacitor C40.
4. Open
or shorted coil L6.
1. Line cord not plugged in.
2. Defective fuse.
3. Defective On-Off switch.
4. Wiring error on power transformer or
di odes D200, D201, D202, D203.
1. Open filament on one of the (or both) lamps.
2. Resistor R200 defective.
1. Source switch in wrong position.
2. Volume control turned fully counterclock-
wise.
3. Defective speakers or speaker cables.
4. Defective audio signal cable or signal
source.
5. Wiring error on phone jack.
6. Measure all voltages.
,/
1. Refer to steps 1 through 6 above.
2. Defective transistor ; measure volta g es.