Sony TC-WR445 Service Manual

_ TC-WR445
SERVICE MANUAL
SPECIFICATIONS
4-track 2-channel stereo
Approx. 150 sec. (with Sony C-60
cassette)
Bias AC bias
Recording system
Fast winding time
Signal-to-noise ratio (at peak level and weighted)
Type IV Type II Type I
58 dB 57 dB 55 dB
S/N ratio improved (approximate values)
with Dolby B NR on: 5 dB at 1 kHz; 10 dB at 5 kHz
with Dolby C NR on: 15 dB at 500 Hz; 20 dB at 1 kHz
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)
Type IV Type II Type I
cassette cassette "cassette
TC- 30 - 18,000 Hz |30- 17,000 Hz |30 - 15,000 Hz
(+3 dB, IEC) (+3 dB, IEC) (+3 dB, IEC)
30 - 13,000 Hz
[+3 dB (-4 dB)
recording]
Model Name Using Similar Mechanism
Tape Transport Machanism
Type
US Model
Canadian Model
AEP Model!
UK Model
E Model
Australian Model
DECK A
TCM-220WR1
DECK B
Type IV:Sony Type IV (METAL)
Type II: Sony Type II (HIGH)
Type I: Sony Type I (NORMAL)
+0.15% W.Peak (IEC)
0.1% W.RMS (NAB)
+0.2% W.Peak (DIN)
Wow and flutter
Inputs
(phono jacks) Inputimpedance | 47 k ohms
— Continued on page 2 —
* Dolby noise reduction and HX Pro headroom extension
manufactured under license from Dolby Laboratories Licensing
Corporation. HX Pro originated by Bang & Olufsen.
"DOLBY", the double-D symbol 00 and "HX PRO" are trademarks
of Dolby Laboratories Licensing Corporation.
STEREO CASSETTE DECK
SONY.