Sony STR-K900 Service Manual - Page 14

14

STR-K880/K900

SECTION 3

DIAGRAMS

For Schematic Diagrams.

Note:

•

All capacitors are in

μ

F unless otherwise noted.

(p: pF)

50 WV or less are not indicated except for electrolytics and

tantalums.

• All resistors are in

Ω

and

1

/

4

W or less unless otherwise

specified.

•

%

: indicates tolerance.

•

f

: internal component.

•

2

: nonflammable resistor.

•

5

: fusible resistor.

•

C

: panel designation.

•

A

: B+ Line.

•

B

: B– Line.

•

Voltages and waveforms are dc with respect to ground un-

der no-signal (detuned) conditions.

No mark : FM

•

Voltages are taken with a VOM (Input impedance 10 M

Ω

).

Voltage variations may be noted due to normal production

tolerances.

•

Waveforms are taken with a oscilloscope.

•

Circled numbers refer to waveforms.

•

Signal path.

F

: FM

J

: ANALOG

c

: DIGITAL

I

: VIDEO

• Abbreviation

AUS

:

Australian model.

CND

:

Canadian model.

E51

:

Chilean and Peruvian models.

SP

:

Singapore model.

SP6

: Singapore and Malaysia models.

For Printed Wiring Boards.

Note:

•

X

: parts extracted from the component side.

•

a

: Through hole.

•

f

: internal component.

•

: Pattern from the side which enables seeing.

•

Indication of transistor.

Caution:

Pattern face side:

Parts on the pattern face side seen from

(Side B)

the pattern face are indicated.

Parts face side:

Parts on the parts face side seen from

(Side A)

the parts face are indicated.

Note:

The components identi-

fied by mark

0

or dot-

ted line with mark

0

are

critical for safety.

Replace only with part

number specified.

Note:

Les composants identifiés

par une marque

0

sont cri-

tiques pour la sécurité.

Ne les remplacer que par une

piéce portant le numéro

spécifié.

C

B

These are omitted.

E

Q

B

These are omitted.

C

E

THIS NOTE IS COMMON FOR PRINTED WIRING BOARDS AND SCHEMATIC DIAGRAMS.

(In addition to this, the necessary note is printed in each block.)

Ver. 1.1

Section	Page
COVER	1
TABLE OF CONTENTS	3
1.GENERAL	4
2.TEST MODE	12
3.DIAGRAMS	14
3-1. BLOCK DIAGRAM – MAIN SECTION –	16
3-2. BLOCK DIAGRAM – DISPLAY/POWER SECTION –	17
3-3. PRINTED WIRING BOARD – DIGITAL BOARD (SIDE A) –	18
3-4. PRINTED WIRING BOARD – DIGITAL BOARD (SIDE B) –	19
3-5. SCHEMATIC DIAGRAM – DIGITAL BOARD (1/5) –	20
3-6. SCHEMATIC DIAGRAM – DIGITAL BOARD (2/5) –	21
3-7. SCHEMATIC DIAGRAM – DIGITAL BOARD (3/5) –	22
3-8. SCHEMATIC DIAGRAM – DIGITAL BOARD (4/5) –	23
3-9. SCHEMATIC DIAGRAM – DIGITAL BOARD (5/5) –	24
3-10. PRINTED WIRING BOARD – MAIN BOARD –	25
3-11. SCHEMATIC DIAGRAM – MAIN BOARD (1/3) –	26
3-12. SCHEMATIC DIAGRAM – MAIN BOARD (2/3) –	27
3-13. SCHEMATIC DIAGRAM – MAIN BOARD (3/3) –	28
3-14. PRINTED WIRING BOARDS – DISPLAY BOARD, POWER BOARD –	29
3-15. SCHEMATIC DIAGRAM – DISPLAY BOARD, POWER BOARD –	30
3-16. PRINTED WIRING BOARDS – STANDBY BOARD, AC SELECT BOARD –	31
3-17. PRINTED WIRING BOARD – SPEAKER BOARD –	32
3-18. SCHEMATIC DIAGRAM – SPEAKER BOARD, STANDBY BOARD, AC SELECT BOARD –	33
3-19. PRINTED WIRING BOARD – SPEAKER B BOARD –	34
3-20. PRINTED WIRING BOARDS – ADCC BOARD, VIDEO 3 BOARD –	35
3-21. SCHEMATIC DIAGRAM – SPEAKER B BOARD, ADCC BOARD, VIDEO 3 BOARD –	36
3-22. PRINTED WIRING BOARDS – VIDEO BOARD, HEADPHONE BOARD –	37
3-23. SCHEMATIC DIAGRAM – VIDEO BOARD, HEADPHONE BOARD –	38
3-24. PRINTED WIRING BOARD – HDMI BOARD –	39
3-25. SCHEMATIC DIAGRAM – HDMI BOARD –	40
4.EXPLODED VIEWS	49
4-1. FRONT PANEL SECTION	49
4-2. CHASSIS SECTION-1	50
4-3. CHASSIS SECTION-2	51
5.ELECTRICAL PARTS LIST	52
AC SELECT	52
ADCC	52
DIGITAL	52
DISPLAY	56
HDMI	57
HEADPHONE	58
MAIN	58
POWER	63
SPEAKER	63
SPEAKER B	64
STANDBY	64
VIDEO	65
VIDEO 3	65

Sony STR-K900 Service Manual - Page 14

Str-k880/k900, Diagrams - parts

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