Aiwa CSD-ED88 - Adjustment (Tuner

< TUNER SECTION >
1. A M (MW) IF Adjustment
L007. . 450 kHz
2. AM (MW) VT Adjustment
Settings : • Test point; TP3
• Adjustment location : L004
Method ; Set to AM (MW) 171 OkHz (HA, LH), 1602kHz (HR)
161 IkHz (EZ) and adjust L004 so that the test point
is 6.0 ± 0.05V (HA, LH), 5.6 ± 0.05V (HR, EZ).
3. AM (MW) Tracking Adjustment
L003.600kHz (HA, LH), 603kHz (HR, EZ)
TCOOl. 1400kHz (HA, LH), 1404kHz (HR, EZ)
4. FM VT Adjustment
Settings : • Test point: TP3
• Adjustment location : L006
Method : Set to FM 108MHz and adjust L006 so that the test
point is 6.0 ± 0.05 V.
5. FM Tracking Adjustment
LOOS.108MHz
6. LW VT Adjustment<EZ>
Settings : • Test point: TP3
• Adjustment location : L051
Method : Set to LW 288kHz and adjust L051 so that the test
point is 4.5 ± 0.05 V.
7. LW Tracking Adjustment<EZ>
L003.153kHz
TC051.288kHz
<CD SECTION >
8. Focus Bias Adjustment
Make the focus bias adjustment when replacing and repairing
the optical block. Oscilloscope
(DC range)
TPl (RF)
TP2 (VREF)
1) Connect an oscilloscope to the test points TPl (RF) and TP2
(VREF).
2) Turn on the power switch.
3) Insert test disc TCD-782 (YEDS-18) and play back the
second composition.
4) Adjust SFR430 so that RF signal of the test point TPl (RF)
is MAX and CLEAREST.
RF signal waveform
EYE PATTERN
Must be CLEAR and MAX
VOLT/DIV: 50mV
TIME/DIV:0.5|xs
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