Aiwa AD-6550 - Service Manual

| STEREO CASSETTE | DECK
Semiconductors:
Power source:
Power consumption:
Dimensions:
Weight:
Track system:
Tape speed:
Wow & flutter:
Automatic shut-off
action time:
Pinch roller pressure:
Take-up torque:
FF & rewind torque:
FF & rewind time:
Playback output:
(TTA-161)
Playback noise:
Rec./pb output:
(400 Hz 0 УЦ)
Rec./pb distortion:
(400 Hz 0 VU)
Rec./pb S/N:
(400 Hz 0 VU)
(Un-Weighted )
Channel separation:
Cross talk:
Erasing ratio:
SPECIFICATIONS
4 IC's, 45 transistors,
35 diodes & 2 LED's
AD-6550EE:
AC
110-120
V/220~240
V
(switchable)
50/60
Hz
AD-6550UK: AC 120 V/240 V
(switchable) 50/60 Hz
том
420(W) x 150(H) x 330(D) mm
7.5 kg
4-track 2-channel stereo
4.76 cm/sec. +1%
0.1% (According to DIN 45 500 Blatt 8)
4 +1 sec.
375 +30g
50 +10 g-cm
125 +25 g-cm
Less than 95 sec. (w/C-60 cassette)
1.05 +0.05 V (LINE/DIN)
Less than 4.5 mV (LH)
Less than 3.0 mV (Fe-Cr, CrO,)
O VU +0.5 dB (LINE/DIN)
Less than 2.096 (LH)
Less than 1.596 (Fe-Cr)
Less than 3.0% (CrO, )
More than 43/45 dB (LH, DOLBY
OFF/ON)
More than 45/48 dB (Fe-Cr, DOLBY
OFF/ON)
More than 45/48 dB (СгО,, DOLBY
OFF/ON)
More than 28 dB (at 1 kHz 0 VU)
More than 65 dB (at 1 kHz 0 VU)
More than 60 dB (400 Hz *10 VU)
е Dolby Noise Reduction System is
AIWA
[SERVICE MANUAL)
Set using ISO screws
DATE OF ISSUE 26/7/1977
100 kHz +10 kHz
LH tape, 20-15 kHz (—10 dB)
30-13 kHz (+3 dB)
Fe-Cr tape, 20-17 kHz (—10 dB)
30-15 kHz (+3 dB)
CrO, tape, 20-17 kHz (—10 dB)
30-15 kHz (+3 dB)
(at Dolby off, Rec./pb)
Bias frequency:
Frequency response:
Motor: 38 pulse FG servo motor
Head: Ferrite guard head (FGH)
Input: MIC: Max. input semsitivity 0.3 mV
(200 2 ~ 10 kQ suitable)
LINE IN: Max. input sensitivity 50 mV
(More than 50 kQ)
DIN: Max. input sensitivity 0.1 mV/kQ
(3 ко)
Output: LINE OUT: Standard output level
0.775 V (0 VU)
Optimum load impedance
more than БО КО
DIN: Standard output level
0.775 V (0 VU)
Optimum load impedance
more than 50 КО
PHONES: 3.4 mV (+3 VU)
Load impedance 8 2
€ Specifications and external appearance are subject to change
without notice due to product improvement.
licensed from Dolby
Laboratories Incorporated.
e The name "Dolby" and the "Double D” symbol are trademarks
of Dolby Laboratories Incorporated.

Aiwa AD-6550 Specifications