Vfo And Buffer Circuit Boards - Heathkit SB-104 Operation Manual

VFO and B u f f e r Circuit Boards
*
TROUBLESHOOTING CHART
NOTE: Heath part numbers that correspond t o the circuit
component numbers will be found i n the Parts List starting
on Page 11 of this Manual.
SYMPTOM
Frequency drift or warble.
Less than .4 to
.5
VDC
VFO output.
,
POSSIBLE CAUSE
1. Check all mechan~cal connections.
2.
Check cemented capacitors on oscillator
circu~t board.
3.
Shorten wires t o coil L1201 and resolder
them securely.
4.
Resolder bare wires from tuning
capacitor C1201 to circuit board
solder lugs.
-
1. Refer to "VFOIBuffer Trouble
shooting Guide."