AIWA CSD-EL300US
Manual de Servicio

ELECTRICAL ADJUSTMENT
< TUNER SECTION >

PRACTICAL SERVICE FIGURE
< TUNER SECTION >
< FM SECTION >
IHF Sensitiviy: (THD 3%) Signal to Noise Ratio: (Input 60dB) Distortion: (Input: 60dB) (Input: 120dB) Auto stop level: Stereo separation: Intermediate frequency: Less than 18dB (at 98MHz) Mono: More than 60dB Stereo: More than 53dB Less than 2% (at 98MHz) Less than 3% (at 98MHz) 28dB±8dB (at 98MHz) More than 28dB (at 98MHz) 10.7MHz 1. AM IF Adjustment L007 ....................................................................... 450kHz 2. AM VT Adjustment Settings: � Test point: C39+ � Adjustment location: L004 Method: Set to AM 1000kHz adjust L004 so that the test point becomes 3.7V±0.02V 3. AM Tracking Adjustment L003 ....................................................................... 600kHz TC001, L007 ........................................................ 1400kHz 4. FM VT Adjustment Settings: � Test point: C39+ � Adjustment location: L006 Method: Set to FM 108MHz adjust L006 so that the test point becomes 6.0V±0.2V 5. FM Tracking Adjustment L005 ........................................................................ 98MHz

MAIN C.B 6
L331

< AM SECTION >
Sensitivity: (S/N 10dB) Less than 48dB (at 600kHz) Less than 46dB (at 1000kHz) Less than 44dB (at 1400kHz) More than 30dB (at 600, 1000, 1400kHz) Less than 3% (at 1000kHz) Less than 10% (at 1000kHz) Less than 60dB (at 1000kHz) 450kHz

Signal to Noise Ratio: Distortion: (Input: 74dB) (Input: 115dB) Auto stop level: Intermediate frequency:

J201

< DECK SECTION >
6. Bias frequency Adjustment L331 .............................................................. 75Hz±500Hz

78 TU C.B 3

L003 (BAR-ANT) 7. Tape speed Adjustment Settings: � Test tape: TTA-100 � Test point: PHONES JACK (J201) � Adjustment location: SFR of deck motor Method: Play back the test tape and adjust so that the output frequency is 3000Hz ±30Hz. 8. Azimuth Adjustment Settings: � Test tape: TTA-320 � Test point: PHONES JACK (J201) � Adjustment location: Azimuth adjustment screw Play back the test tape and adjust so that the output is maximum.

M1 (DECK MOTOR)

< DECK SECTION >
Tape speed: Wow & flutter: Take-up torque: FF&REW torque: Distortion: S/N ratio: 3000Hz±60Hz Less than 0.35% (R.M.S) 30-60g-cm (FWD) 75-160g-cm Less than 5% (REC/PB, 1kHz) More than 40dB (PB, AC, DC) More than 40dB (REC/PB, AC, DC) Less than 35mV (PB, VOL MAX) More than 40dB TTA-320 TTA-602 (NORMAL) TTA-615 (HIGH POSITION)

7

L005

TC001

Method:

5
L007 IC001 L006 L004

3

8

Max Noise level: Erasing Ratio: Test tape:

13

2 4

C39 +

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