Sony ICF-CD820 - Cd/am/fm Stereo Clock Radio, Service Manual

Page: 10 / 33

– 10 –
FM STEREO Adjustment
Procedure:
1. Connect the frequency counter to
4
and
7
pins of IC1 as
shown the figure right.
2. Tune the set to 98 MHz.
3. Adjust RV1 for 76 kHz
±
500 Hz reading on frequency counter.
FM RF SSG
Carrier frequency: 98 MHz
Modulation: no modulation
Output level: 0.032 V (90 dB)
0.01
µ
F
FM lead wire antenna terminal
’ ‘
Connection:
IC1 Pin
4 +
–
frequency counter
33 k
Ω
MAIN Board
IC1 Pin
7
Adjustment Location:
T1
AM IF Adjustment
RV1
FM Stereo Adjustment (76 kHz)
L1-2 (CD820L: AEP, UK)
LW Tracking Adjustment
L2
CT1
FM Tracking
Adjustment
CT3
L1
L1-1
(Except CD820L: FR):
AM (MW) Tracking
Adjustment
(CD820L: FR):
LW Tracking Adjustment
CT5 (CD820L: AEP, UK)
LW Tracking Adjustment
L4
CT4
(CD820L: AEP, UK):
AM (MW) Frequncy Coverage Adjustment
(CD820L: FR):
LW Frequency Coverage Adjustment
CT6 (CD820L: AEP, UK)
LW Frequency Coverage Adjustment
L3 (Italian)
L3 (Except Italian)
FM Frequency Coverage
Adjustment
[MAIN Board] (Component Side)
CT2