Read Sony HCD-G1300 / LBT-G1300 Service Manual online
— 12 —
FM Tuned Level Adjustment
Carrier frequency : 98 MHz
Modulation
Modulation
: AUDIO 1 kHz, 75 kHz
deviation (100%)
Output level
: 28 dB (at 75
Ω
open)
FM RF SSG
set
75
Ω
coaxial
FM ANTENNA terminal
(JK101)
(JK101)
Procedure:
1. Supply a 28 dB 98 MHz signal from the ANTENNA terminal.
2. Tune the set to 98 MHz.
3. Adjust SFR101 to the point (moment) when the TUNED indica-
1. Supply a 28 dB 98 MHz signal from the ANTENNA terminal.
2. Tune the set to 98 MHz.
3. Adjust SFR101 to the point (moment) when the TUNED indica-
tor will change from going off to going on.
Adjustment Location: TUNER board
FM RF SSG
oscilloscope
FM ANTENNA terminal (JK101)
SPEAKER terminal (JK501)
set
Carrier frequency : 90 MHz, 106 MHz
Modulation
Modulation
: AUDIO 1kHz, 75kHz deviation (100%)
Output level
: 20 dB (at 75
Ω
open)
+
–
FM Tracking Adjustment
Procedure:
1. Tune the set to 90 MHz.
2. Adjust L102 so that when the waveform on the oscilloscope is
2. Adjust L102 so that when the waveform on the oscilloscope is
maximum, no noise appears.
3. Tune the set to 106 MHz.
4. Adjust TC101 so that when the waveform on the oscilloscope is
4. Adjust TC101 so that when the waveform on the oscilloscope is
maximum, no noise appears.
• Repeat the procedures in each adjustment several times, and the
tracking adjustment should be finally done by the trimmer
capacitors.
capacitors.
Adjustment Location: TUNER board
Adjustment Location
[TUNER BOARD] — Component side —
L105
TC102
CN101
AM Tracking
AM Tuning Voltage
JK101
L103
TP2 (VT)
TC101
L102
FM Tracking
L104
SFR101
FM Tuning Voltage
FM Tuned Level
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