Practical Service Figure - Aiwa CR-DS800 Servise Manual

ADJUSTMENT
Q Q
3 7 6 3 1 5 1 5 0
HJ501
VR151
VOLUME
S212
T E
L 1 3 9 4 2 2 9 6 5 1 3
w w w
6 5 4
L102
L104
TC101
TC102
IFT101
SFR101
S211 S202
7 1 3
TP1
(VT)
TP2
(VCO)
x a o
y
. i
9
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1. AM IF Adjustment
8
IFT101 ........................................................................ 450 kHz
2. AM VT Check
Setting: • Test point: TP1 (VT)
Check: AM 531 kHz (YZ)/AM 530 kHz (YH) ...... 0.9 ~ 1.4 V
AM 1710 kHz ...................................... Less than 8.2 V
3. AM Tracking Adjustment
L112 ............................................................................ 630 kHz
TC102 ....................................................................... 1440 kHz
4. FM IF Adjustment
TC101 ...................................................................... 10.7 MHz
Q Q
3 7 6 3

PRACTICAL SERVICE FIGURE

<FM SECTION>
IHF Sensitivity: Less than 16 dB
(IHF, THD 3%) (87.5 MHz)
Less than 15 dB
(98.5/108.0 MHz)
Signal to noise ratio: More than 50 dB
(87.5/98.5/108.0 MHz)
Distortion: Less than 2.0%
(Input - 54 dB) (98.5 MHz)
Stereo separation: More than 20 dB
(98.5 MHz)
Intermediate frequency: 10.7 MHz
u 1 6 3
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5. FM VT Adjustment
2 4
9 9 8
Settings: • Test point: TP1 (VT)
• Adjustment location: L104
Method: Set to FM 87.5 MHz and adjust L104 so that test
point becomes 2.3 ± 0.1 V.
Check: FM 108.0 MHz (YZ)/FM 108.1 MHz (YH)
.......................................... Less than 5.5 V
FM 76.0 MHz (YH) ........................... More than 1.0 V
6. FM Tracking Adjustment
L102 ......................................................................... 87.5 MHz
7. VCO Frequency Adjustment
SFR101 .......................................................... 19 kHz ± 100Hz
1 5 1 5 0 8 9 2 4
<AM SECTION>
Sensitivity:
(S/N 10 dB)
Signal to noise ratio:
(Input - 74 dB)
Distortion:
(Input - 74 dB)
Intermediate frequency:
m
c o
10
2
9 9
9 8 2 9 9
Less than 51 dB
(630 kHz)
Less than 48 dB
(999 kHz)
Less than 45 dB
(1440 kHz)
More than 31 dB
(603 kHz)
More than 33 dB
(999/1440 kHz)
Less than 4.0%
(999 kHz)
450 kHz