Sony HCD-EC68 Service Manual page 21

[FM Auto Stop Check]
SET
Procedure :
1. Turn the power on.
2. Input the following signal from Signal Generator to FM an-
tenna input directly.
* Carrier Freq : A = 87.5 MHz, B = 98 MHz, C = 108 MHz
Deviation : 75 kHz
Modulation : 1 kHz
ANT input : 35 dBu (EMF)
Note: Please use 75 ohm "coaxial cable" to connect SG and the set. You
cannot use video cable for checking.
Please use SG whose output impedance is 75 ohm.
3. Set to FM tuner function and scan the input FM signal with
automatic scanning.
4. Confi rm that input Frequency of A, B and C detected and auto-
matic scanning stops.
The stop of automatic scanning means "The station signal is re-
ceived in good condition".
generator
+
75 Ω
Adjustment Location and Connecting Points:
– MAIN Board (Component Side) –
L801
FM Frequency
L804
Coverage Adjustment
AM Tracking
Adjustment
– MAIN Board (Conductor Side) –
3
CN801
ANTENNA
IC801 pin
1
(TUNER VT)
36
19
IC801
18
1
IC801 pin
(TUNER OUT L-ch)
HCD-EC68/EC78
L802
FM Detector
Adjustment
L803
FM Frequency
Coverage Adjustment
L805
AM Tracking
Adjustment
JW801
(TUNER-GND)
21