Sony TC-K222ESG - Page 2

TC-K222ESG/K850ES
TABLE OF CONTENTS
Section Title Page
SPECIFICATIONS + +ccccccccccccccescsssccceecvccesces 1
MODEL IDENTIFICATION «ccccccccccccecceccssevces 3
SAFETY ‘CHECK =ODUT «sss s0se0vewavausey ees coum eaes 3
1. GENERAL sitet corieetieuimivangs fess ears vores 4
2. DISASSEMBLY ---- occ e cece cece ccc ereesssecccenes 5
3. ADJUSTMENTS
3-1. Mechanical Adjustments -++-+++ssrsreeeeeers 7
3-2. Electrical Adjustments --++s+ssssrseeeeeeees 10
4. DIAGRAMS
4-1. Block Diagram :++s+etreeee cece ree ceeeecees 15
4-2. Semiconductor Lead Layouts :+:-++++++++e+ 17
4-3. Circuit Boards Location --+++++++seseeeeeee 18
4-4, IC Block Diagrams:++++++seseeseeseeeeeeees 18
4-5. Printed Wiring Boards
— Main Section — ccerecsceessccececvcccccee 20
4-6. Schematic Diagram
— Main Section — ecrseceecreecccceeccevcees 25
4-7. Schematic Diagram
— Panel section — crrrrrcscecccseeteecreeece 30
4-8, Printed Wiring Boards
— Panel Section —errererecseccerscscecnvens 33
. EXPLODED VIEWS
5-1. Overall Section-:sssccscrececscreeencvescvce 35
5-2. Panel Section «eccsssccrccssccccccescevvvece 36
5-3. Mechanism Section (1) srrresreerereeseeeee 37
5-4, Mechanism Section (2) s++++rrrereereseeeee 38
. ELECTRICAL PARTS Ry So 22
SAFETY-RELATED COMPONENT WARNING!!
COMPONENTS IDENTIFIED BY MARK A OR DOTTED
LINE WITH MARK A ON THE SCHEMATIC DIAGRAMS
AND IN THE 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 PUB-
LISHED BY SONY.
Flexible Circuit Board Repairing
* Keep the temperature of the soldering iron around
270°C 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
e Never reuse a disconnected chip component.
*« 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.
Oyel-Te-stlare melt ele (=
Before connecting the unit to the power source, check
that the operating voltage of your unit is the same as the
local power supply.
If 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.
VOLTAGE
ATTENTION AU COMPOSANT AYANT RAPPORT
A LA SECURITE!
LES COMPOSANTS IDENTIFIES PAR UNE MARQUE /\
SUR LES DIAGRAMMES SCHEMATIQUES ET LA LISTE
DES PIECES SONT CRITIQUES POUR LA SECURITE
DE FONCTIONNEMENT. NE REMPLACER CES COM.
POSANTS QUE PAR DES PIECES SONY DONT LES
NUMEROS SONT DONNES DANS CE MANUEL OU
DANS LES SUPPLEMENTS PUBLIES PAR SONY.