Sony TC-RX77 Service Manual

TC-RX77/RX7TTES
SERVICE MANUAL
Dolby noise reduction manufactured under license from
Dolby Laboratories Licensing Corporation.
"DOLBY" and the double-D symbol 00) are trademarks of
Dolby Laboratories Licensing Corporation.
4-track 2-channel stereo
Approx. 90 sec. (with Sony C-60
Recording system
Fast-winding time
cassette)
Bias AC bias
Heads Erasing head x 1 (ferrite head)
Playback/Recording head x 1 (LA
head)
Motors Capstan motor x 1 (DC servo motor)
Reel motor x 1 (DC motor)
ASIST (mechanical drive) motor x 1
(DC motor)
Signal-to-noise ratio (at peak level)
Type IV (Sony METAL-SLT) | 59dB | 67 4B
Type Il (Sony UX-S) 58dB | 66dB
Total harmonic distortion
1% (with Sony METAL-SLT cassette)
Frequency response (DOLBY NR OFF)
20- 20,000Hz (+ 3db,/EC)
(US, Canadian models)
25-19,000Hz (+ 3db,JEC) (AEP)
Type Il cassette 25 - 17,000 Hz (+3 dB, IEC)
(Sony UX-S)
Type | cassette 25 - 16,000 Hz (+3 dB, IEC)
(Sony HF-S)
Wow and flutter +0.09% W. Peak (IEC)
0.06% WRMS (NAB).
+0.16% W. Peak (DIN)
Type IV cassette
(Sony METAL-SLT)
Dolby NR switch OFF B-Type | C-Type
ON ON |
— US Model
Canadian Model
TC-RX77TES
AEP Model
TC-RX77
Model Name Using Similar Mechanism TC-RX70/RX70ES
Tape Transport Mechanism Type TCM - 200R6
hg s
Inputs
(phone
Outputs
Line outputs
(phono jacks)
Headphones
(stereo phone
jack)
Line inputs
(phono jacks)
Microphone inputs
77.5 mV
Input impedance | 47 k ohms
Sensitivity (For a | 0.25 mV
low-impedance |
microphone)
jacks)
Rated output level] 0.32 V ata load
impedance of 47
k ohms
Load impedance | Over 10 k ohms
Output level 0-1.25 mW ata
load impedance of
32 ohms
General
Power requirements
RX77ES : 120 V AC, 60Hz (US, Canadian models)
RX77 =: 220V AC, 50/60Hz (AEP model)
Power consumption 20W
Dimensions Approx. 430 x 123 x 300 mm (w/h/d)
(17 x 4% x 117% inches)
including projecting parts and controls
Weight Approx. 4.7 kg (10 Ibs 6 02)
Supplied accessory
Audio connecting cords (2)
Design and specifications subject to change without notice.
STEREO CASSETTE DECK
SONY.