Tuner Alignment; Electrical Characteristics - Sherwood RX-4109 Service Manual

1. Electrical specification.
No.
1-1
Local OSC
1-2
Frequency cover range( E/RDS )
Frequency cover range( K )
1-3
Standard supply voltage
1-4
FM Antenna input Impedance
1-5
AM Loop Antenna

2. Electrical Characteristics.

No. TEST ITEMS
AF Output Level ( E/RDS )
AF Output Level ( K )
FM
Auto Stop Level
Stereo Separation ( E/RDS ) 1kHz
Stereo Separation ( K )
AF Output Level ( E/RDS )
AF Output Level ( K )
MW
Auto Stop Level( E/RDS )
Auto Stop Level ( K )
3. Adjust Point.

TUNER ALIGNMENT

ITEMS
TEST
CONDITION
47§ Ú Load
47§ Ú Load
1kHz
47§ Ú Load
47§ Ú Load
SPECIFICATION
M W
Above the receiving Frequency
522 ~ 1611kHz
520 ~1710kHz
15.0(±1.5V)
11.5uH ( 2.52MHz )
T.L. MOD.
T.P. Specification
dBu kHz,%
98.1 60
98.1 60 40
98.1 --
98.1 60
98.1 60
999 74 30
1000 74 30
999 -- 30
1000 -- 30
F M
87.5 ~ 108.0MHz
87.5 ~ 108.0MHz
75 ohm
UNIT
600±100 mV
500±100 mV
20 ±5 dBu
35 min dB
40 min dB
180 ± 50 mV
165 ± 50 mV
58 ±10 dBu
58 ±10 dBu
Adjustment
Non Adjust
Non Adjust
SVR01
SVR02
SVR02
Non Adjust
Non Adjust
SVR03
SVR03