Adjustment (Tuner) - Aiwa XP-SR320 Service Manual
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Also See for XP-SR320:
- Operating instructions manual (9 pages) ,
- Service manual (27 pages)
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ADJUSTMENT (TUNER)
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< TUNER SECTION >
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1. Clock Adjustment
Settings : • Test point :
• Adjustment location : L901
Method :
Set to AM 530kHz and adjust L901 so that the test
point becomes 1.0MHz ± 1kHz.
2. AM VT Check
Settings : • Test point :
Method :
Set to AM 530kHz and check that the test point is
1.0V ± 0.5V. Then set to AM 1710kHz and check that
the test point is 7.5V ± 1.0V.
3. AM Tracking Adjustment
Settings : • Test point :
• Adjustment location :
ANT801 ...................... 600kHz
TC801 ......................... 1400kHz
4. AM IF Adjustment
Settings : • Test point :
• Adjustment location :
L806 ........................... 450kHz
5. FM VT Adjustment.
Settings : • Test point :
• Adjustment location : L805
Method :
Set to FM 108.0MHz and adjust L805 so that the test
point bcomes 6.8V ± 0.2V. Then set to FM 87.5MHz
and check that the test point is 1.5V ± 1.0V.
6. FM Tracking Adjustment
Settings : • Test point :
TE
L 13942296513
• Adjustment location : L804
Method :
Set to FM 108.0MHz and adjust L804 so that the test
point TP3 (FM IN) becomes maximum with
minimum distortion.
Then set to FM 87.5MHz and check that the test point
J701 (PHONES) is 10dB ± 6dB.
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TP2 (CLK)
TP1 (VT)
TP8 (L-OUT), TP9 (R-OUT)
TP8 (L-OUT), TP9 (R-OUT)
TP1 (VT)
TP3 (FM IN)
J701 (PHONES)
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7. FM Separation Check
Settings : • Test point :
• Input level :
• Volume level :
Method :
Set to FM 98.0MHz and check that the test point is
more than 17dB.
8. Mono Distortion Check
Settings : • Test point :
• Input level :
• Volume level :
Method :
Set to FM 98.0MHz and check that the distortion at
the test point is less than 3.0%.
9. Output Level Check
<AM>
Settings:
• Test point :
• Input level :
• Volume level :
Method :
Set to AM 1000kHz and check that the test point is
100mV ± 15mV.
<FM>
Settings:
• Test point :
• Input level :
• Volume level :
Method :
Set to FM 98.0MHz and check that the test point is
270mV ± 15mV.
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J701 (PHONES)
60dB
MAX
J701 (PHONES)
60dB
MAX
J701 (PHONES)
74dB
MAX
J701 (PHONES)
60dB
MAX
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