HT-SL7, HT-SL7A, STR-KSL7, STR-SL7, TA-KSL7 - Sony Audio Service Manual (repair manual). Page 3

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COMPONENTS IDENTIFIED BY MARK 0 OR DOTTED LINE WITH
MARK 0 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
PUBLISHED BY SONY.

LES COMPOSANTS IDENTIFÉS PAR UNE MARQUE 0 SUR LES
DIAGRAMMES SCHÉMATIQUES ET LA LISTE DES PIÈCES SONT
CRITIQUES POUR LA SÉCURITÉ DE FONCTIONNEMENT. NE
REMPLACER CES COMPOSANTS QUE PAR DES PIÈSES SONY
DONT LES NUMÉROS SONT DONNÉS DANS CE MANUEL OU
DANS LES SUPPÉMENTS PUBLIÉS PAR SONY.

PARTS No.

4-235-042-1s

4-235-042-2s

4-235-042-3s

4-235-042-4s

4-235-042-5s

4-235-042-7s

4-235-042-9s

MODEL

STR-SL7

:US model

STR-KSL7 :Canadian model

STR-KSL7 :Malaysia, Singapore model

STR-KSL7 :E model

STR-KSL7 :Mexican model

TA-KSL7

:AEP, UK model

TA-KSL7

:Chinese model

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3-1. Block Diagrams ····························································· 8

– Main Section – ··························································· 8
– Display/Power Section – ············································ 9

3-2. Printed Wiring Board  – Digital Section – ·················· 10
3-3. Schematic Diagram  – Digital Section (1/2) – ············ 11
3-4. Schematic Diagram  – Digital Section (2/2) – ············ 12
3-5. Printed Wiring Board  – Main Section (1/2) – ············ 13
3-6. Printed Wiring Board  – Main Section (2/2) – ············ 14
3-7. Schematic Diagram  – Main Section (1/3) – ··············· 15
3-8. Schematic Diagram  – Main Section (2/3) – ··············· 16
3-9. Schematic Diagram  – Main Section (3/3) – ··············· 17
3-10. Printed Wiring Board  – Panel Section – ····················· 18
3-11. Schematic Diagram  – Panel Section – ······················· 19
3-12. Schematic Diagram  – Video Section – ······················· 20
3-13. Printed Wiring Board  – Video Section – ···················· 21
3-14. IC Block Diagrams ······················································ 22
3-15. IC Pin Function Descriptions ······································ 25

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4-1. Front Panel Section ····················································· 29
4-2. Chassis Section ···························································· 30

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Parts No.

Unleaded solder
Boards requiring use of unleaded solder are printed with the lead-
free mark (LF) indicating the solder contains no lead.
(Caution: Some printed circuit boards may not come printed with
the lead free mark due to their particular size.)

Unleaded solder has the following characteristics.
• Unleaded solder melts at a temperature about 40°C higher than

ordinary solder.
Ordinary soldering irons can be used but the iron tip has to be
applied to the solder joint for a slightly longer time.
Soldering irons using a temperature regulator should be set to
about 350°C.
Caution: The printed pattern (copper foil) may peel away if the
heated tip is applied for too long, so be careful!

• Strong viscosity

Unleaded solder is more viscous (sticky, less prone to flow) than
ordinary solder so use caution not to let solder bridges occur such
as on IC pins, etc.

• Usable with ordinary solder

It is best to use only unleaded solder but unleaded solder may
also be added to ordinary solder.

Notes on chip component replacement
• Never reuse a disconnected chip component.
• Notice that the minus side of a tantalum capacitor may be damaged

by heat.