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SERVICE MANUAL
US Model
TC- K679ES
TC- K690
Canadian Model
UK Model
TC- K679ES
AEP Model
TC- K690
Dolby
noise
reduction
manufactured
under
license
from
Dolby
Laboratories Licensing Corporation.
"DOLBY"
and the double-D symbol!
9(
are trademarks of
Dolby
Laboratories
Licensing Corporation.
Photo:TC-
K679ES
Model
Name
Using
Similar
Mecanism
| TC-K677ES/K670
SPECIFICATIONS
Tape
Transport
| TC-K679ES
TCM- 200V9
Recording system
— 4-track 2-channel stereo
Mechanism
Type
| TC-K690
TCM- 200V10
Fast winding time
Approx. 90 sec. (with Sony C-60
!
cassette)
Bias
AC bias
Inputs
Heads
Erasing head x 1 (S&F head)
Line inputs
Sensitivity
Recording head x 1 (SD head)
(phono jacks)
,
-
-
Playback head x 1 (LA head) (K679ES)
npuLimpedatice: aowionns
J
Playback head x 1 (SD head) (K690)
Outputs
Motors
Capstan motor x 1 (DC servo motor)
-
Reel motor x 1 (DC motor)
Line outputs
Rated output
0.5 V at a load
;
:
(phono jacks)
level
impedance of
ASIST (mechanical drive) motor x 1
a '
47 kilohms
(DC motor)
Load
Over
10 kiloh
Signal-to-noise ratio (at peak level)
impadainea
eS
Ons:
Type IV
Type Il
Type |
Headphones
Output level
|O— 3 mW ata load
(Sony Metal-
|(Sony UX-S) | (Sony HF-S)
(stereo phone jack)
7
impedance of
Select/S)
32 ohms
60 dB
59 dB
57 dB
Measured at peak level weighted without NR. The S/N is
General
improved by about 15 dB at 500 Hz and by about 20 dB
Power requirements
120V AC, 60Hz: K679ES
(US,Can adian)
about 1 kHz with Dolby-C NR on, and by 5 dB at 1 kHz and
K690 (US)
by 10 dB about 5 kHz with Dolby-B NR on.
240V AC, 50Hz: K679ES
(UK)
220 - 230V AC, : K690 (AEP, Germany)
Harmonic distortion
(or 240V AC adjustable
0.4% (with Sony Type I, 160 nWb/m,
by Sony personnel), 5060Hz
315 Hz, 3rd H.D.)
Power consumption
19W
1.5% (with Sony Type IV, 250 nWb/m,
Dimensions
Approx. 430 x 123 x 300 mm (w/hid)
315 Hz, 3rd H.D.)
(17 x 47% x 117% inches)
Frequency response (Dolby NR OFF)
including projecting parts and contdls
Type IV cassette | 20-21,000 Hz (+ 3dB,IEC) (K679ES)
Weight
Approx. 4.9 kg (10 Ibs 13 02)
CSony Metal-Select/}
20- 20,000 Hz (+ 3dB,IEC)
(K690)
S)
20- 16,000
Hz [+ 3dB (-4dB
recording) ]
Type
Il cassette
20-19,000Hz
(+ 3dB,IEC)
(K679ES)
CSony
UX-S)
20- 18,000 Hz(+ 3dB,IEC)
(K690)
Design and specifications are subject to change without
Type | cassette
CSony HF-S)
notice.
meme)
Wow and flutter
+0.09% W.Peak (IEC)
Corry
0.05% W.RMS (NAB)
SS O
N
Y.
+0.14% W.Peak (DIN)
®
Supplied accessories
Audio connecting cords (2)
20-17,000Hz (+ 3 dB,IEC)
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