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TC-WR521/WR990
SERVICE MANUAL
US Model
Canadian
Model
TC-WR521/WR590
AEP Model
UK Model
E Model
TC-WR590
Photo : TC-WR590
SPECIFICATIONS
4-track 2-channel stereo
Approx. 90 sec. (with Sony C-60
Recording system
Fast winding time
cassette)
Bias
AC bias
Signal-to-noise ratio (at peak level)
Cassette
Type IV
Type II
Type |
(Dolby NR
(Sony HF-S)
OFF)
(Sony Metal- | (Sony UX-S)
Select/S)
| 58dB
|
57 dB
Measured at peak level weighted without NR. The S/N is
improved by about 15 dB at 500 Hz and by about 20 dB
about 1 kHz with Dolby-C NR on, and by 5 dB at 1 kHz and
by 10 dB about 5 kHz with Dolby-B NR on.
Harmonic distortion
0.4% (with Sony Type I, 160 nWb/m,
315 Hz, 3rd H.D.)
1.8% (with Sony Type IV, 250 nWb/m,
315 Hz, 3rd H.D.)
Frequency response (Dolby NR OFF)
WR8521
30-18,000 Hz ( + 3dB, IEC)
30-13,000 Hz (+ 3dB, (—4dB) recording)
WR521
(Sony Metal-
Select/S)
WR521
WR5s0
+0.14% W.Peak (IEC)
0.08% W.RMS (NAB)
+0.19% W.Peak (DIN)
MICROFILM
Model Name Using Similar Mechanism | TC-WR520/WR570
DECK A| TCM-190RA12C
re-wnses [DESK
DECK B| TCM-190RB22C
DECK A| TCM-190RA12C
DECK B| TCM-190RB12C
Tape Transport
Machanism Type
inputs
Line inputs
| Sensitivity
0.16 V
(phono jacks)
Input impedance _—| 47 kilohms
Outputs
Line outputs
Rated output
0.5 V ataload
(phono jacks)
level
impedance of
47 kilohms
Load impedance | Over 10 kilohms
Headphones
Output level
1 mW ata
load
(stereo phone jack)
impedance of
:(WRS590 only)
32 ohms
— Continued
on page 2 —
Dolby
noise
reduction
manufactured
under
license
from
Dolby
Laboratories Licensing Corporation.
"DOLBY"
and the double-D symbo!
9
are trademarks of
Dolby
Laboratories
Licensing Corporation.
STEREO CASSETTE DECK
SONY.
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