TEAC SR-L250IB Service Manual - Page 5

Am Tuner

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SR-L250i 3-2-1 AM TUNER ITEM SG SETTING Audio Modulation Frequency Output TUNER SETTING ADJUSTMENTS MEASURING POINTS. RESULT 1.VOLTAGE adjustment 2.IFT 1KHz 30% adjustment 450KHz 1620KHz(EUR) 1629KHz(JP) 522KHz L402 AM OSC coil Check VT 8.8-9.2V 76dBuV 603KHz L401 AM IFT coil Maximun output level 3.ANT Coil 1KHz 30% adjustment 603KHz 76dBuV 603KHz Maximun output L405 AM ANT coil level 4.Adjustment 1KHz 30% 1404KHz 76dBuV 1404KHz Check Maximun output level AM Signal generator AM SR-L 250i R430 R453 PHONES VT voltage Digital multimeter 1K Ω AC voltmeter S1 60CM AM LOOP Antenna 1K Ω 

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5
SR-L250i
3-2-1 AM TUNER
ITEM
SG SETTING
TUNER
SETTING
ADJUSTMENTS
MEASURING
POINTS.
RESULT
Audio
Modulation
Frequency
Output
1.VOLTAGE
adjustment
1620KHz(EUR)
1629KHz(JP)
L402 AM OSC coil
VT 8.8-9.2V
522KHz
Check
2.IFT
adjustment
1KHz
30%
450KHz
76dBuV
603KHz
L401 AM IFT coil
Maximun output
level
3.ANT Coil
adjustment
1KHz
30%
603KHz
76dBuV
603KHz
L405 AM ANT coil
Maximun output
level
4.Adjustment
1KHz
30%
1404KHz
76dBuV
1404KHz
Check
Maximun output
level
AC voltmeter
AM Signal generator
AM LOOP
Antenna
60CM
AM
S1
1K Ω
1K Ω
VT voltage
SR-L250i
PHONES
R453
R430
Digital multimeter