Sony STR-K7100 Service Manual - Page 1

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SERVICE MANUAL

US Model

STR-K7100

MULTI CHANNEL AV RECEIVER

Amplifier section

Power Output

1)

Stereo mode (rated) (6 ohms, 1 kHz, THD 1%)

90 W + 90 W

Surround mode (reference) (6 ohms, 1 kHz, THD 10%)

RMS Output

2)

FRONT: 140 W/ch

CENTER: 140 W

SURROUND: 140 W/ch

1)

Measured under the following conditions:

Area code

Power requirements

US

120 V AC, 60 Hz

2)

Reference power output for front, center and surround

speakers. Depending on the sound field settings and the

source, there may be no sound output.

SPECIFICATIONS

Inputs

Analog

Sensitivity: 800 mV/

50 kohms

Digital (Coaxial)

Impedance: 75 ohms

Outputs (Analog)

AUDIO OUT

Voltage: 800 mV/10 kohms

SUB WOOFER

Voltage: 2 V/1 kohm

Tone

Gain levels

±

6 dB, 1 dB step

Reproduction frequency range:

28 – 20,000 Hz

FM tuner section

Tuning range

87.5 – 108.0 MHz

Antenna

FM wire antenna

Antenna terminals

75 ohms, unbalanced

Intermediate frequency

10.7 MHz

Ver. 1.0

2007.03

9-887-608-01

2007C04-1

© 2007.03

Sony Corporation

Home Audio Division

Published by Sony Techno Create Corporation

Manufactured under license from Dolby Laboratories.

“Dolby”, “Pro Logic” and the double-D symbol are

trademarks of Dolby Laboratories.

“DTS” and “DTS Digital Surround” are trademarks of

DTS, Inc.

This receiver incorporates High-Definition

Multimedia Interface (HDMI

TM

) technology.

HDMI, the HDMI logo and High-Definition

Multimedia Interface are trademarks or registered

trademarks of HDMI Licensing LLC.

– Continued on next page –

The XM name and related logos are registered

trademarks of XM Satellite Radio Inc.

AUDIO POWER SPECIFICATIONS

POWER OUTPUT AND TOTAL HARMONIC DISTORTION:

With 6 ohm loads, both channels driven, from 120 – 20,000 Hz;

rated 90 watts per channel minimum RMS power, with no

more than 1% total harmonic distortion from 250 milliwatts

to rated output.

Section	Page
COVER	1
TABLE OF CONTENTS	4
1. GENERAL	5
Description and location of parts	5
2. DISASSEMBLY	8
2-1. CASE	8
2-2. BACK PANEL SECTION	9
2-3. FRONT PANEL SECTION	9
2-4. DIGITAL BOARD	10
2-5. MAIN BOARD SECTION	10
2-6. STANDBY BOARD	11
3. TEST MODE	12
4. FM TUNER CHECK	13
5. DIAGRAMS	14
5-1. CIRCUIT BOARDS LOCATION	14
5-2. BLOCK DIAGRAM — TUNER/AUDIO SECTION —	15
5-3. BLOCK DIAGRAM — DIGITAL SECTION —	16
5-4. BLOCK DIAGRAM — VIDEO SECTION —	17
5-5. BLOCK DIAGRAM — HDMI SW SECTION —	18
5-6. BLOCK DIAGRAM — XM SECTION —	19
5-7. BLOCK DIAGRAM — KEY/DISPLAY SECTION —	20
5-8. BLOCK DIAGRAM — OUTPUT/POWER SECTION —	21
Waveforms	22
5-9. PRINTED WIRING BOARDS — MAIN SECTION —	23
5-10. SCHEMATIC DIAGRAM — MAIN SECTION (1/2) —	24
5-11. SCHEMATIC DIAGRAM — MAIN SECTION (2/2) —	25
5-12. PRINTED WIRING BOARD — DIGITAL SECTION (1/2) —	26
5-13. PRINTED WIRING BOARD — DIGITAL SECTION (2/2) —	27
5-14. SCHEMATIC DIAGRAM — DIGITAL SECTION (1/3) —	28
5-15. SCHEMATIC DIAGRAM — DIGITAL SECTION (2/3) —	29
5-16. SCHEMATIC DIAGRAM — DIGITAL SECTION (3/3) —	30
5-17. PRINTED WIRING BOARDS — VIDEO SECTION —	31
5-18. SCHEMATIC DIAGRAM — VIDEO SECTION —	32
5-19. PRINTED WIRING BOARD — HDMI SW SECTION —	33
5-20. SCHEMATIC DIAGRAM — HDMI SW SECTION —	34
5-21. PRINTED WIRING BOARD — XM SECTION —	35
5-22. SCHEMATIC DIAGRAM — XM SECTION —	36
5-23. PRINTED WIRING BOARDS — DCAC, POWER KEY SECTION —	37
5-24. SCHEMATIC DIAGRAM — DCAC, POWER KEY SECTION —	37
5-25. PRINTED WIRING BOARD — DISPLAY SECTION —	38
5-26. SCHEMATIC DIAGRAM — DISPLAY SECTION —	39
5-27. PRINTED WIRING BOARD — POWER SECTION —	40
5-28. SCHEMATIC DIAGRAM — POWER SECTION —	40
5-29. PRINTED WIRING BOARD — DCDC SECTION —	41
5-30. SCHEMATIC DIAGRAM — DCDC SECTION —	41
IC Block Diagrams	42
IC Pin Descriptions	48
6. EXPLODED VIEWS	55
6-1. CASE SECTION	55
6-2. FRONT PANEL SECTION	56
6-3. BACK PANEL SECTION	57
6-4. CHASSIS SECTION	58
7. ELECTRICAL PARTS LIST	59
DCAC	59
DCDC	59
DIGITAL	59
DISPLAY	63
HDMI SW	64
HEADPHONE	65
MAIN	65
POWER KEY	69
STANDBY	69
VIDEO	70
VIDEO 3	70
XM	71

Sony STR-K7100 Service Manual - Page 1

Sony STR-K7100 - Multi Channel Av Receiver Manual

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