Sony tc k 222 esg service manual

Page 1

SERVICE MANUAL

US Model

Canadian Model

UK Model

West Germany Model

TC-K85OES
E Model
TC>K222ESG
TC- K850ES
Dolby noise reduction manufactured under license from
Dolby Laboratories Licensing Corporation.
"D0 LBY" and the double-D symbol D0 are trademarks of
Dolby Laboratories Licensing Corporation.
Model Name Using Similar Mechanism New
Tape Transport Mechanism Tyne TOM-20002

SPECIFICATIONS

Recording system rack 2-channel stereo
Bias AC bias

Heads Erase head x1 (5 & F head)
Recording head x1 (Permailoy head)
Playback head X1 (LA head)

Motors capstan motor x1

(direct drive linear torque BSL motor)

Fleel motorx1 (DC motor)

DC motorx 1
Wow and llutter 0.024% WRMS (NAB), 10.0$5% (DIN)
Fastlorward and rewind time

Approx 90 see. (with 060 cassette)
Frequency response (DOLBY NR OFH

TYPE IV cassette

Outputs

Line outputs
(phone jacks)

Rated output level

0.44 V (-5 dB) at a
load impedance
47k ohms

Load impedance

Over 10k ohms

Headphones
(stereo phone jack)

Output level

0-2.5 mW at a load
impedance of 32
ohms

General
Power requirements

West Germany model:
220 V AC (or 240 V AC adjustable
by Sony personnel), 50/60 Hz

(Sony METALES)

15-21,000 HZ (1'3 dB, DIN)
15- 16,000 Hz (OVU recording)

TYPE li cassette

15-19000 Hz(13 dB, DIN)

US. Canadian model:
120 V AC, 60 H2
UK model:

Power consumption
Dimensions

240 V AC (or 220 V AC adjustable
by Sony personnel), 50/60 Hz

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

23 W

Approx, 430 x 135 x 350 mm (w/h/d)

(Sony UXS)
TYPE I cassette 15-11000 Hz (:3 dB. DIN)
(Sony HF-S)

Signal-tortoise ratio (at peak level)

Dolby NR switch OFF BvTYPE C-TVPE
Cassette ON ON
Egg Ilvl/ETALvES) 61 as 70 as 76 dB
TYPE ll (Sony UXS) 59 dB 68 dB 74 d3
TYPE l (Sony HF-S) 57 dB 66 dB 72 d8

Total harmonic distortion

10% (with Sony METAL-ES cassette)

CD DlRECT input

(phone jacks)

Inputs
Line inputs Sensitivity 775 mV (-20 dB)
(phone jacks) Input impedance 50k ohms

(17 x 53/, x 137/. inches)

Approx, 470 x 135 x 350 mm (wlhld)*
(18% x 55/,x137/. inches)

Approx 6.9 kg (15 lbs 4 oz)

Approx 7.9 kg (17 lbs 7 oz)

* including proiecting parts. controls and wooden side panels
Supplied accessory Audio connecting cord (2)

Optional accessory Wireless remote control unit RMd701

Weight

Design and speculications subject to change without notice.

Note
This appliance conforms wrth EEC Directive 87/308IEEC regarding
interference suppression.

STEREll CASSETTE DECK
ONE

Page 2

TC- K222ESG/K850ES

TABLE OF CONTENTS

Section Title Page
SPECIFICATIONS - - 1
MODEL IDENTIFICATION -- 3
SAFETY CHECK-OUT .............................. 3
1 GENERAL ......................................... 4
2. DISASSEMBLYH 5
3. ADJUSTMENTS
3-1. Mechanical Adjustments ~ 7
3-2. Electrical Adjustmentsn- ~~~~~~~~~~~~ 10
4. DIAGRAMS
4_1. Block Diagram ............................. 15
4-2. Semiconductor Lead Layouts -------------- 17
4-3. Circuit Boards Location ~
4-4. [c Block Diagrams ..................... 13
4-5. Printed Wiring Boards
-Main Section- .......................... 20
4-6. Schematic Diagram
-Main Section _ .......................... 25
4-7. Schematic Diagram
.. Panel section .- .......................... 30
4-8. Printed Wiring Boards
_ Panel Section _ .......................... 33
5. EXPLODED VIEWS
5,1. Overall Section ............................. 35
5-2. Panel Section .............................. 36
5-3. Mechanism Section (1) ~~~~~~~~~~~~~~~~ 37
5-4. Mechanism Section (2) ~~~~~~~~~~~~~~~~ 38
5. ELECTRICAL PARTS LIST ....................... 22

SAFETY-RELATED COMPONENT WARNING! I

COMPONENTS IDENTIFIED BY MARK A OR DOTTED
LINE WITH MARK & ON THE SCHEMATIC DIAGRAMS
AND IN THE PARTS LIST ARE CRITICAL T0 SAFE
OPERATION. REPLACE THESE COMPONENTS WITH
SONY PARTS WHOSE PART NUMBERS APPEAR AS
SHOWN IN THIS MANUAL OR IN SUPPLEMENTS PUB-
LISHED BY SONY.

Flexible Circuit Board Repairing

- Keep the temperature of the soldering iron around
270C during repairing.

. Do not touch the soldering iron on the same conductor
of the circuit board (within 3 times).

- Be careful not to apply force on the conductor when
soldering or unsoldering.

Notes on chip component replacement

0 Never reuse a disconnected chip component.

0 Notice that the minus side of a tantalum capacitor may
be damaged by heat.

Dolby noise reduction and HX Pro headroom extension
manufactured under license from Dolby Laboratories
Licensing Corporation. HX Pro originated by Bang &
Olufsen.

Ope ling voltage -

Before connecting the unit to the power source, check
that the operating voltage of your unit is the same as the
local power supply.

it your model has a voltage selector on the rear panel
and it must be reset, disconnect the AC power cord
and set the selector to the appropriate voltage

65 VOLTAGE selector

ATTENTION AUCOMPOSANT AYANT RAPPORT
A LA SECURITEI

LES COMPOSANTS toemmés PAR UNE MAROUE A
sun LES DIAGRAMMES SCHEMATIOUES at LA LISTE
DES PIECES SONT camoues POUR LA sécunlré
DE FONCTIONNEMENT. NE REMPLACER ces com-
vosmrs our: PAR DES PIECES so~v pom LES
NuMénos sour DONNES DANS c: MANUEL ou
DANS LES SUPPLEMENTS PUBLIES PAR soNY.