Sony tc ka 1 esa service manual

Page 1

TC-KA1ESA KE500$

SERVICE MANUAL

US Model

TC-KA 1 ESA/KESOOS

Canadian Model
TC-KA1ESA

AEP Model

UK Model
Austral/an Model
E Model

TCKE5008
Photo : TC-KESOOS
Dolby noise reduction and HX lro headroom cxtcnaion Model Name Using Similar Mechanism NEW
manufactured under license from Dolby Laboratories Licensing
Corporation. HX Pro originated by Bang 8: Olufsen. Tape Transport Mechanism Type TOM-1 QOVBI 4

"DOLBY, the doublevD symbol DD and "HX PRO are trademarks
of Dolby Laboratories Licensing Corporation.

SPECIFICATIONS

System

Recording system
4-track 2-channel stereo

Fast winding time (approx)
90 sec. (with Sony C~60 Cassette)

HigIHpeed fast-winding time (approx)
45 sec. (with Sony C-60 cassette)

Bias
AC bias

Heads
Erasing head X 1 (8&F head)
Recording head X 1 (SD head)
Playing head x 1 (SD head)

Motors
Capstan motor X 1 (DC servo motor)
Reel motor x 1 (DC motor)

Signal-to-noise ratio (at peak level, weighted, and with Dolby NR 011')
Type I tape, Sony Type I (NORMAL): 57 dB
Type II tape, Sony Type ll (HIGH): 59 dB
Type IV tape, Sony Type IV (METAL): 61 dB

SIN ratio improvement (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
With Dolby S NR on: 10 dB at 100 Hz, 24 dB all kI-l7,

Harmonic distortion
0.4% (with Type 1 tape, Sony Type I (NORMAL):
160n Wb/rn 315 Hz, 3rd HD.)
1.5% (with Type 1V tape, Sony Type IV (METAL):
25011 Wb/m 315 Hz, 3rd H,D,)

Frequency response (Dolby NR oft)
Type I tape, Sony Type I (NORMAL):
20 ~17,000Hz(13 dB, IEC)
15 . 18,000 Hz (16 dB)
Type II tape, Sony Type 11 (HIGH):
2() - 18,000 H7. (:3 dB, IEC)
15 - 19,000 H7, (:6 dB)
Type IV tape, Sony Type IV (METAL):
20 -19,()00H7,(t3 dB, IEC)
20 - 16,000 Hz (:3 dB, -4dB recording)
15 ~ 21,000 H7, (:6 dB)

- Continued on page 2 -

STEREO CASSETTE DECK
SONE

Page 2

Wow and flutter
20.08570 W4 Peak (IEC)
0.055% W. RMS (NAB)
$011693 W4 Peak (DIN)

Inputs
Line inputs (phono jacks)

Sensitivity: (L16 V
Input impedance: 47 kilohms

Outputs

Line outputs (phone jacks)
Rated output level: ()5 V at a load impvdamv nt
47 kilolims
Load impodancc Over 10 kilohms

Headphones (stereo phone jackt

Output level: (1.25 mW at a load impodnncool
32 ohms

General

Power requirements

Where purchased Power requirements

US. Canadian model : 120 V AC, 60 Hz

AEP, UK, German, Malaysia, 220 » 230 V AC, 50/60 Hz
Singapore model :

Australian model ' 240 V AC, 50 Hz

E model: 120. 220, or 240 V AC. 50/60 Hz
adjustable with the voltage selector

Power consumption
21 W

Dimensions (approx) (wlhld)
430x120><310min incl. projecting parts and controls

Mass (approx)
4 2 kg (9 IbsS oz)

Supplied accessories
Audio connecting cords (2)

Design and specifications are subject to change without
notice.

TABLE OF CONTENTS
Section Title Page
Specifications .................................... . .......................... 1
1. GENERAL
Identifying the Parts on the Front Panel ~~~~~~~~~~~~~~~~~~~~~~~~~~ 4

2. DISASSEMBLY

Zul, Front Panel Removal ~5
2-2. Mechanism Deck» 5
2.3 Head .................. .5
2-4, Fitting Base Block ~ 6
2,.5 Motor ...................... o...---c-c~c ......................... 6
3. ADJUSTMENTS
3.1 Mechanical Adjustments ....................................... 7
3.2 Electrical Adjustments ......................................... 7
4. EXPLANATION OF IC TERMINALS ~~~~~~~~~~~~~~~~~~~~~~~ 11
5. DIAGRAMS
5-1. Block Diagram" ' 13
52 Circuit Boards Location ~ 16
5-3. Printed Wiring Boards (Main Section)~ ~ 17
5-4. Schematic Diagram (Main (1/2) Section ~ 21
5-5, Schematic Diagram (Main (2/2) Section '25
5-6. Printed Wiring Boards (Dolby (S) Board -29
5-7. Schematic Diagram (Dolby (S) Board) ~ H 29

6. EXPLODED VIEWS
6-1. Chassis Section ~~~~
6-2. Front Panel Section
6-3. Mechanism Section 1-
64. Mechanism Section 2

~35

7. ELECTRICAL PARTS LIST ~~