Sony tc wa 8es service manual

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TC-WA8ES R7658

SERVICE MANUAL us Model

Canadian Model
TC-WA8ES

AEP Model

E Mode/
Australian Model

TC-WR765S
Photo : TC-WABES
Dolby noise reduction and HX Pro headroom extension . .
manufactured under license from Dolby Laboratories Licensing Medal Name Usmg Slmllar MeChanlsm TC-WR545/WR741
Corporation. HX Pm originated by Bang & Olufsenl Tape Transport Machanism Type TCM-190RB1ZCL
DOLBY", the doubleD symbol DD and "HX PRO are trademarks
of Dolby Laboratories Licensing Corporation.
SPECIFICATIONS
Recording system 4-track 2»channel stereo Type IV: Sony Type IV (METAL)
Fastwinding time Approx. 90 sec, (with Sony C-6O Type II: Sony Type II (HIGH)
cassette) Type I: Sony Type I (NORMAL)
Bias AC bias
Signal-to-noise ratio (at peak level and weighted) Wow and flutter i0113% WPeak (IEC)
Cassette Type IV Type II Type I 007% WRMS (NAB)
(Dolby NR i0.18% W.Ieak (DIN)
OFF) 58 dB 57 dB 55 dB Inputs
S/N . d ( l ) Line inputs Sensitivity 0116 V
ratio Improve approximate va ues ( hono 'acks) .

with Dolby B NR on: 5 dB at I kI-Iz; 10 dB at 5 kHz P J 1"? mPedance 47 1 Ohms
with Dolby C NR on: 15 dB at 500 Hz; 20 dB at 1 kHz 0 t t
with Dolby 5 NR on: 10 dB at 100 Hz; 24 dB at 1 kHz 1 P 5

Line outputs Rated output 05 V at a load
Harmonic distortion (P110110 jacks) level impedance of

04% (with Sony Type I) 160 nWb/m, 47 k ohms
1 87 (MiIHSZ, 3rCFer'Dllv 250 Wb/ Load impedance Over 10 k ohms
' o ;15l1:g¥d £1; ) ' n m, Headphones Output level 1 mW at a load
Frequency response (Dolby NR OFF) (stereo phone )ack) Impedance of
32 ohms
Cassette Type IV Type II Type I >

Model cassette cassette cassette * 00""U9d 0" page 2 -
TC- 30 - 18,000 Hz 30 - 17,000 Hz 30 - 15,000 Hz

WA8ES/ (13 dB, IEC) (i3 dB, IEC) (i3 dB) IEC)
WR765S 30 - 13,000 Hz

imam STEREO CASSETTE DECK
S ON E

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General
Power requirements

Where purchased
US, Canadian model 120V AC, 60Hz
AEP, German model 220 - 230V AC, 50/60Hz
Australian model 240V AC, 50/60Hz

Power requirements

E model 120/220IZ40V AC, 50/60Hz
Power consumption 28 W
Dimensions US, Canadian model :

Approx, 430 x 123 X 290 mm
(w/h/d)
(17x 47/xx 11 I/z inches)

AEP, German, E, Australian model :

Approx. 430 x 123 x 300 mm
(w/h/d)
(17X 47/sx 11 7/2; inches)
including projecting parts and
controls

Mass Approx. 46 kg (10 lbs 3 oz)

Supplied accessories
Audio connecting cords (2)

Design and specifications are subject to change without
notice.

TABLE OF CONTENTS
Section Title Page
Specifications ........................................................ ....1
Safety Check-out ........................................................... 3
1. GENERAL
1»1i Identifying the Parts on the Front Panel ---------- 4
. DISASSEMBLY

2.1. Front Panel ....................................................... 5
2-2 Mechanism Deck -----------
23. Capstan Motor, Reel Motor ~-
2-4, Head, Pinch Roller ----------

. ADJUSTMENTS

3-1. Mechanical Adjustments
3-2. Electrical Adjustments -~

. EXPLANATION OF Ic TERMINALS ----------------------- 11

. DIAGRAMS

5-1. Block Diagram ---------
5-2. Circuit Board Location -
5-3, Printed Wiring Boards (Main Section)
5-4. Schematic Diagram (Main Section)-~
5-5 Schematic Diagram (Audio Section) '-
5-6. Printed Wiring Boards (Audio Section)--
5-7. Printed Wiring Boards (Dolby (S) Section)
5-8, Schematic Diagram (Dolby (S) Section)

. EXPLODED VIEWS

6-1, Chassis Section ~~~~~~
6-2. Front Panel Section
6-3i Mechanism Section 1
6-4. Mechanism Section 2 --------------------------------------- 40

. ELECTRICAL PARTS LIST ----------------------------------- 41
MODEL IDENTIFICATION
(Specification Label)
SONY Tc-WAeEs
6:
MODEL 0' _ _ TC-WR7655

STEREO CASSETTE DECK

US, Canadian model :
Australian model :
AEP, German model :
E model :

AC 120V 60Hz

AC 240V~50l60HZ

AC 220-230V~50/50Hz
A0120, 220, 240V~50l60HZ