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3 7 63 1515 0
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.
Recording system
4-track 2-channel stereo
TE
L 13942296513
Fast-forward and rewind time
Approx. 90 sec. (with C-60 cassette)
Bias frequency
105 kHz
Signal-to-noise ratio (NAB, at peak level)
TYPE II (Sony UX S)
Total harmonic distortion
1.0% (with Sony METAL-ES cassettes)
Frequency response
DOLBY NR OFF
With TYPE I V cassette (Sony METAL-ES)
l
30
30
With TYPE II cassette (Sony UX-S)
l
30 15,000 Hz (±3 dB)
With TYPE
l
20
Wow and flutter
0.07% WRMS (NAB)
inputs
Microphone inputs (phone jacks)
Sensitivity 0.25 mV (-70 dB)
For a low-impedance microphone
Line inputs (phono jacks)
Sensitivity 77.5 mV (-20 dB)
www
Input impedance 47 kilohms
outputs
Line outputs (phono jacks)
Output level 0.44 V (-5 dB) at load
impedance 47 kilohms
.
Load impedance over 10 kilohms
Headphones output (stereo phone jack)
Output level -28 dB at load impedance
8 ohms
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SPECIFICATIONS Tape Transport Mechanism Type
B TYPE
ON
65dB
64 dB
67dB
61 dB
15,000 Hz (±3 dB)
13,000 Hz (±3 dB, 0 VU recording)
I
cassette (Sony HF-S)
14,000 Hz (±3 dB)
x
ao
y
i
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8
Model Name Using Similar
General
Power requirements
Q Q
3
6 7
1 3
Power consumption
C-TYPE
Dimensions
O N
71 dB
Weight
70dB
SAFETY-RELATED
COMPONENTS IDENTIFIED BY SHADING AND MARK
PARTS LIST ARE CRITICAL TO SAFE OPERATION.
REPLACE THESE COMPONENTS WITH SONY PARTS
WHOSE PART NUMBERS APPEAR AS SHOWN IN THIS
MANUAL OR IN SUPPLEMENTS PUBLISHED BY SONY.
ATTENTION AU COMPOSANT AYANT RAPPORT
L E S C O M P O S A N T S IDENTIFIES PAR UNE TRAME ET
U N E
M A R Q U E h S U R L E S DIAGRAMMES SCHE-
MATIQUES ET LA LISTE DES PIECES SONT CRITIQUES
POUR LA SECURITE DE FONCTIONNEMENT. NE REM-
P L A C E R C E S C O M P O S A N T S D U E P A R D E S PIECES
S O N Y D O N T L E S NUMEROS SONT DONNES DANS CE
MANUEL OU DANS LES SUPPLEMENTS PUBLIES PAR
SONY.
STEREO CASSETTE DECK
u163
.
2 9
9 4
2 8
US Model
Canadian Model
AEP Model
1 5
0 5
8
2 9
9 4
USA and Canadian
model: 120 Vac, 60 Hz
UK model:
240V
ac, 50/60Hz
AEP model: 22OV ac, 50/60 Hz
20 Watts
(w/h/d)
Approx. 430 x 110 x 255 mm
(17 x 4% x 10% inches)
including projecting parts and controls
Approx. 3.9 kg (8 Ibs 10 oz)
COMPONENT
WARNING!!
A
LA SECURITE
m
co
SONY
9 9
2 8
9 9

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   Summary of Contents for Sony TC-R303

  • Page 1 COMPONENTS IDENTIFIED BY SHADING AND MARK Frequency response DOLBY NR OFF PARTS LIST ARE CRITICAL TO SAFE OPERATION. With TYPE I V cassette (Sony METAL-ES) REPLACE THESE COMPONENTS WITH SONY PARTS 15,000 Hz (±3 dB) WHOSE PART NUMBERS APPEAR AS SHOWN IN THIS 13,000 Hz (±3 dB, 0 VU recording)
  • Page 2 TC-R303 3 7 63 1515 0 TABLE OF CONTENTS Page Title Description . , ..... . _ Specifications..
  • Page 3 http://www.xiaoyu163.com T C - R 3 0 3 T 3 7 63 1515 0 LOCATION AND FUNCTION OF CONTROLS FRONT PANEL’ TAPE COUNTER and RESET button The tape counter provides convenient reference points for recording and playback To reset to zero, press the RESET button Cassette holder HEADPHONES jack (stereo phone jack)
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  • Page 7 http://www.xiaoyu163.com SECTION 2 ADJUSTMENTS 3 7 63 1515 0 2-2. ELECTRICAL ADJUSTMENTS 2-1. MECHANICAL ADJUSTMENTS PRECAUTION Note: The adjustment should be performed in the order given in this service manual. The adjustments should be performed for both Clean the following parts with a denatured- L-CH and R-CH.
  • Page 8 http://www.xiaoyu163.com Record/Playback Head Azimuth Adjustment Tape Speed Adjustment 3 7 63 1515 0 Procedure: Adjust both NOR and REV. Procedure: Mode: playback Mode: FWD playback speed checker L FM-30 test tape P-4-A 100 VTVM digital frequency counter test tape Ws-488 (3 k Hz, 0 dB) the adjustment screw for the maximum 2.
  • Page 9 http://www.xiaoyu163.com Level Bias Adjustment Playback adjustment Record 3 7 63 1515 0 Procedure: Setting: 1. Mode: playback REC LEVEL control: standard record test tape (See page 7.) P-4- L 3 0 0 VTVM (315Hz. 0 dB) Procedure: 1. Mode: record AF OSC Adjust RV103 (L-CH) and RV203 (R-CH) so that the specification is met.
  • Page 10 http://www.xiaoyu163.com Record Level Adjustment Setting: 3 7 63 1515 0 REC LEVEL control: standard record (See page 7.) Procedure: 1. Mode: record AF OSC 333 Hz, 0.25 V /- 10 dB) Mode: playback recorded V T V M portion 3. Playback the signal recorded in step 1. Confirm that the signal level is within the specifi- cation below.
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  • Page 13 http://www.xiaoyu163.com 3 7 63 1515 0 L 13942296513 u163 http://www.xiaoyu163.com...
  • Page 14 http://www.xiaoyu163.com 3 7 63 1515 0 RTV servis Horvat Kešinci, 31402 Semeljci L 13942296513 031-856-139 031-856-637 098-788-319 rtv-servis-horvat@os.tel.hr Croatia u163 http://www.xiaoyu163.com...
  • Page 15 http://www.xiaoyu163.com 3 7 63 1515 0 L 13942296513 u163 http://www.xiaoyu163.com...
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  • Page 23 http://www.xiaoyu163.com 3 7 63 1515 0 Remarks Part No. Description Remarks Part No. Description 3-391-177-01 3-391-109-01 SPRING SCREW, WASHER 3-391-132-01 x-3391-121-1 PLATE, SHIELD HEAD ASSY, ROTARY 1138 3-391-133-01 3-391-110-01 NUT, ADJUSTMENT 1139 SPRING 3-391-111-01 1 4 0 x-3391-114-1 ARM ASSY, PLAY GUIDE, TAPE 1141 3-391-126-01...
  • Page 24 http://www.xiaoyu163.com SECTION 5 ELECTRICAL PARTS LIST 3 7 63 1515 0 NOTE: The comoonents identified marked II * (( are not stocked since CAPACITORS: Items they are seldom required for routine critical for safety. service. Some delay should be antici- RESISTORS part pated when ordering these items.
  • Page 25 http://www.xiaoyu163.com ELECTRICAL PARTS 3 7 63 1515 0 ELECTRIC AL PARTS Ref.No. Part No. Description Ref.No. Part No. Description D301 8-719-107-94 DIODE lSS202-1 B-759-600-02 DIODE lOE2 M O 2 8 - 7 1 9 - 2 0 0 - 0 2 DIODE lOE2 8-759-600-02 DIODE lOE2...
  • Page 26 The following trouble checks will help you correct the most common problems encountered with deck. your tape Should any problems persist after making these checks, consult your nearest Sony dealer. Before proceeding with these trouble checks, first confirm the following basic points: The power cord is firmly connected.

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Tc-r303

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