Sony WM-D6 Service Manual

'Dolby' and the double-D symbol are the
oratories. Noise reduction system manufactured
Doioy Lab
under ficense from
Power Requirements:
Dimensions:
Weight:
Recording System:
Wow and Flutter:
Tape Speed Deviation:
Speed Controller
Variations:
Frequency Response
(DOLBY NR OFF):
MICROFILM
AEP Model
UK Model
US Mode/
trade marks.ot
Dolby Laboratories
6 V dc, four batteries, size AA (IEC R6)
BP-23 battery pack (optional)
External power input jack (required power
6 V dc) accepts appropriate ac power with
Sony ac power adaptor listed on page 7, or
12 V car battery with Sony DCC-127A car
battery cord
181 (w) x 40 (h) x 95 (d) mm
71/4 (w) x 15/, (h) x 33/4 (d) inches
including projecting parts
640g, 1 Ib 7 oz including batteries
4-track, 2-channel stereo
£0.14% (DIN)
0.04% WRMS (NAB)
+0.3%
Approx. +4%
With TYPE IV cassette, Sony METALLIC
40— 15,000 Hz +3 dB
With TYPE II cassette, Sony CD-a (EHF)
40— 15,000 Hz +3 dB
With TYPE I cassette, Sony BHF (HFX)
40— 15,000 Hz +3 dB
STEREO CASSETTE-CORDER
SPECIFICATIONS
S/N (NAB, at Peak
Level):
Total Harmonic
Distortion:
Inputs:
Outputs:
Power Output: |
DOLBY NR OFF
TYPE IV cassette, Sony METALLIC 58 dB
TYPE II cassette, Sony CD-a (EHF) 56 dB
TYPE I cassette, Sony BHF (HF X) 54 dB
DOLBY NR ON
improved by 5dB at 1 kHz, 10dB abowe
5 kHz
1.0% with Sony METALLIC
LINE IN/MIC input (stereo minijack) --. 1
With select switch at MIC:
0.25 mV with low impedance microphone
With select switch at LINE IN:
60 mV (47 kilohms)
LINE OUT (stereo minijack) ... 1
output level 0.25 V (less than 4.7 kQ)
Headphones (stereo minijack) ... 2
load impedance 8— 3002
Headphones
30 mW + 30 mW (at 10% harmonic distortion)
load impedance 322
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