Sony TC-WR545 Service Manual

SERVICE MANUAL
Photo : TC-WR545
US Model
Canadian Model
TC-WR545/WR74 1
AEP Model
UK Model
E Model
Australian Model
TC-WR545
Model Name Using Similar Mechanism | TC-WR535
Tape Transport Machanism
Type
DECK A} TCM-190RA12CL
TCM-WR545 : TCM-190RB12CL
DECK B
TCM-WR741 : TCM-190RB52C
SPECIFICATIONS
4-track 2-channel stereo
Approx. 90 sec. (with Sony C-60
cassette)
Bias | AC bias
Signal-to-noise ratio (at peak level and weighted)
Cassette Type IV Type Il Type I
(Dolby NR
OFF) 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
Recording system
Fast winding time
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 I Type lI
cassette cassette cassette
30 - 18,000 Hz }30- 17,000 Hz | 30 - 15,000 Hz
(43 dB, TEC) {G@3dB,IEC) | (43 dB, IEC)
30 - 13,000 Hz
[+3 dB (-4 dB)
recording]
Type IV: Sony Type IV (METAL)
Type Il: Sony Type IJ (HIGH)
Typel: Sony Type I (NORMAL)
Wow and flutter +0.14% W.Peak (IEC)
0.08% W.RMS (NAB)
+0.19% W.Peak (DIN)
— Continued on page 2 —
Dolby noise reduction manufactured under license from
Dolby Laboratories Licensing Corporation.
"DOLBY" and the double-D symbol 90 are trademarks of
Dolby Laboratories Licensing Corporation.
STEREO CASSETTE DECK
SONY.