AIWA TPVS480
Manual de Servicio

ELECTRICAL ADJUSTMENT

PRACTICAL SERVICE FIGURE
Tape speed: Wow & flutter: Take-up torque: F.F torque: REW torque: S/N ratio:
J103 EARPHONE

A MAIN C.B

3000 Hz ± 60 Hz Less than 0.55% (4.8 cm/s) Less than 0.8% (2.4 cm/s) 20 ~ 50 g-cm (FWD) More than 55 g-cm More than 55 g-cm More than 56 dB (DC, PB) More than 26 dB (DC, R/PB) Less than 3.0% (DC, PB) Less than 7.0% (DC, R/PB) Less than 2.0 mV (PB, Vol Max., DC) Less than 16 mV (R/PB, Vol Max., DC) Less than 0.3 mV (PB, Vol Min, DC)

Distortion:

Noise level:

VR202 VR201 PLAYBACK SPEED VR402

Erasing ratio: Test tape

More than 44 dB (1kHz) TTA-100 TTA-150 TTA-160 TTA-330

IC BLOCK DIAGRAM
IC, MM1206XF

1
R/P HEAD

3

2

1. Azimuth Adjustment Settings: � Test tape: TTA-330 � Test point: EARPHONE JACK (J103) � Adjustment location: Azimuth adjustment screw � PAUSE: OFF � VOLUME: Maximum. Method: Play back the test tape, and adjust so that the output (8 kHz) becomes maximum.

3. Tape Speed Adjustment (2.4cm/s) (TP-VS610 only) Settings: � Test tape: TTA-150 or TTA-160 (TAPE CENTER) � Test point: EARPHONE JACK (J103) � Adjustment location: VR402 � PAUSE: OFF � VOLUME: Maximum � PLAYBACK SPEED: Normal (Speed volume center) � REC MODE: Extended Method: Play back the test tape, and adjust for 3000 Hz ±10Hz

2. Tape Speed Adjustment (4.8 cm/s) Settings: � Test tape: TTA-100 (TAPE CENTER) � Test point: EARPHONE JACK (J103) � Adjustment location: VR202 � PAUSE: OFF � VOLUME: Maximum � PLAYBACK SPEED: Normal Method: (Speed volume center) Play back the test tape, and adjust for 3000 Hz ±10Hz

TRANSISTOR ILLUSTRATION
C

B

E 2SC2712 2SC3326 2SC4081 2SC4116 2SC4213 DTC114 RN2304

9

10