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1. Clock Adjustment
Settings :
• Test point :
TP2 (OSC)
• Adjustment location : L901
Method :
Set to AM 530kHz <YU,YL,AHA>,AM 531kHz
<AK,AEZ> and adjust L901 so that the test point
becomes 1.0MHz
±
1kHz.
2. AM VT Check
Settings :
• Test point :
TP1 (VT)
Method :
Set to AM 530kHz <YU,YL,AHA>,AM 531kHz
<AK,AEZ> and check that the test point is 1.0V
±
0.5V. Then set to AM 1600kHz <YU,YL,AHA>,AM
1602kHz <AK,AEZ> and check that the test point is
6.5V
±
1.0V.
3. AM Tracking Adjustment
Settings :
• Test point :
TP8 (Lch), TP9 (Rch)
• Adjustment location :
ANT801 (Bar Antenna) ....... 600kHz <YU,YL,AHA>
ANT801 (Bar Antenna) ............... 603kHz <AK,AEZ>
TC801 ................................ 1400kHz <YU,YL,AHA>
TC801 ........................................1404kHz <AK,AEZ>
*Repeat this adjustment a few times until the wave shap has the
maximum amplitude.
4. AM IF Adjustment
Settings :
• Test point :
TP8 (Lch), TP9 (Rch)
• Adjustment location :
L806 ................................................................ 450kHz
5. FM VT Adjustment.
Settings :
• Test point :
TP1 (VT)
• Adjustment location : L805
Method :
Set to FM 108.0MHz and adjust L805 so that the
test point becomes 7.0V
±
0.2V. Then set to
FM 87.5MHz and check that the test point is 1.5V
±
0.1V.
6. FM Tracking Adjustment
Settings :
• Test point :
TP3 (FM-IF)
• Adjustment location : L804
Method :
Set to FM 98.0MHz and adjust L804 so that the test
point is maximum and distortion is minimum.
7. FM Separation Check
Settings :
• Test point :
PHONES (J701)
• Volume :
MAX
• Input level :
60dB, 1kHz
Method :
Set to FM 98.0MHz and check that the test point is
more than 17dB.
8. Mono Distortion Check
Settings :
• Test point :
PHONES (J701)
• Volume :
MAX
• Input level :
60dB, 1kHz
Method :
Set to FM 98.0MHz and check that the distortion
at the test point is less than 3.0%.
ADJUSTMENT
All manuals and user guides at all-guides.com
Содержание IMPLE-2 XP-R120
Страница 9: ...9 SCHEMATIC DIAGRAM 1 MAIN All manuals and user guides at all guides com...
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