Sony HCD-GS30DAB - Tuner Section Adjustments

18
HCD-GS10/GS30DAB
Adjustment Location and Connecting Points
L851
(TUNER–VT)
TP(TUNER–VT)
(TUNER–GND)
TP(TUNER–GND)
FM FREQUENCY
COVERAGE
ADJUSTMENT
FM TRACKING
ADJUSTMENT
AM TRACKING
ADJUSTMENT
FM DETECTOR
ADJUSTMENT
CN802
– MAIN BOARD (Conductor side) –
– MAIN BOARD (Component side) –
1
3
L804
L805
L803
L806
IC801 pin qs
(TUNER OUT L-ch)
[FM DETECTOR ADJUSTMENT]
Setting:
FUNCTION: TUNER
TUNER/BAND button: FM
FM RF signal
generator
Carrier frequency: 98MHz
Modulation:
deviation by FM 75 kHz
Output level: 60 dBuV
+
–
level meter
MAIN board
TP(TUNER–GND)
MAIN board
IC801 pin
qs
(TUNER OUT L-ch)
set
MAIN board
ANTENNA
CN802 pin 2
MAIN board
ANTENNA
CN802 pin 1
1. Tune the set to 98 MHz.
2. Adjust L806 so that modulation distortion may become the
best in the vicinity of the maximum value where the tuner out
level becomes –15dBuV or more.
AM FREQUENCY COVERAGE ADJUSTMENT
(Canadian)
Adjustment Part Frequency Display Reading on Digital Voltmeter
530 kHz 1.6 ± 0.3 V
Confirmation
1,710 kHz 7.0 ± 0.5 V
AM FREQUENCY COVERAGE ADJUSTMENT
(EXCEPT Canadian)
Adjustment Part Frequency Display Reading on Digital Voltmeter
531 kHz 1.6 ± 0.3 V
Confirmation
1,602 kHz 6.7 ± 0.5 V
AM TRACKING ADJUSTMENT
Adjust for a maximum reading on level meter
620 kHz (Canadian) /
L851, L803
603 kHz (EXCEPT Canadian)
FM FREQUENCY COVERAGE ADJUSTMENT
Adjustment Part Frequency Display Reading on Digital Voltmeter
L805 87.5 kHz 1.7 ± 0.1 V
Confirmation 108 kHz 6.2 ± 0.5 V
FM TRACKING ADJUSTMENT
Adjust for a maximum reading on level meter
L804 98 MHz
Adjustment Location: MAIN board.
Ver. 1.3