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HT-ST7
2
NOTES ON CHIP COMPONENT REPLACEMENT
- Never reuse a disconnected chip component.
- Notice that the minus side of a tantalum capacitor may be dam-aged by heat.
SAFETY CHECK-OUT
After correcting the original service problem, perform the follow-
ing safety check before releasing the set to the customer:
Check the antenna terminals, metal trim, metallized knobs,
screws, and all other exposed metal parts for AC leakage.
Check leakage as described below.
LEAKAGE TEST
The AC leakage from any exposed metal part to earth ground and
from all exposed metal parts to any exposed metal part having a
return to chassis, must not exceed 0.5 mA (500 microamperes.).
Leakage current can be measured by any one of three methods.
1. A commercial leakage tester, such as the Simpson 229 or RCA WT-540A. Follow the manufacturers instructions to use these
instruments.
2. A battery-operated AC milliammeter. The Data Precision 245 digital multimeter is suitable for this job.
3. Measuring the voltage drop across a resistor by means of a VOM or battery-operated AC voltmeter. The limit indication
is 0.75 V, so analog meters must have an accurate low-voltage
scale. The Simpson 250 and Sanwa SH-63Trd are examples
of a passive VOM that is suitable. Nearly all battery operated
digital multimeters that have a 2 V AC range are suitable. (See
Fig. A)
1.5 kΩ
0.15 μF AC
voltmeter
(0.75 V)
To Exposed Metal
Parts on Set
Earth Ground
Fig. A. Using an AC voltmeter to check AC leakage.
SAFETY-RELATED COMPONENT WARNING!
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.
ATTENTION AU COMPOSANT AYANT RAPPORT Ã- LA SÉCURITÉ!
LES COMPOSANTS IDENTIFIÉS PAR UNE MARQUE 0 SUR
LES DIAGRAMMES SCHÉMATIQUES ET LA LISTE DES
PIÈCES SONT CRITIQUES POUR LA SÉCURITÉ DE FONC-
TIONNEMENT. NE REMPLACER CES COMPOSANTS QUE
PAR DES PIÈCES SONY DONT LES NUMÉROS SONT DON-
NÉS DANS CE MANUEL OU DANS LES SUPPLÉMENTS
PUBLIÉS PAR SONY.
This system incorporates Dolby* Digital and the DTS** Digital Surround System.
* Manufactured under license from Dolby Laboratories. Dolby, and the double-D symbol are trademarks of Dolby Laboratories.
** Manufactured under license under U.S. Patent Nos: 5,956,674; 5,974,380; 6,226,616; 6,487,535; 7,212,872; 7,333,929; 7,392,195;
7,272,567 & other U.S. and worldwide patents issued & pending.
DTS-HD, the Symbol, & DTS-HD and the Symbol together are registered trademarks of DTS, Inc.
Product includes software. © DTS, Inc.
All Rights Reserved.
The BLUETOOTH
® word mark and logos are registered trademarks owned
by Bluetooth SIG, Inc. and any use of such marks by Sony Corporation is
under license.
This system incorporates High-Definition Multimedia Interface (HDMI-„¢)
technology.
The terms HDMI and HDMI High-Definition Multimedia Interface, and the HDMI Logo are trademarks or registered trademarks of HDMI Licensing LLC
in the United States and other countries.
BRAVIA logo is a trademark of Sony Corporation.
x.v.Color and x.v.Color logo are trademarks of Sony Corporation.
The N Mark is a trademark or registered trademark of NFC Forum, Inc. in the United States and in other countries.
Android is a trademark of Google Inc.
© 2012 CSR plc and its group companies.
The aptX® mark and the aptX logo are trade marks of CSR plc or one of its
group companies and may be registered in one or more jurisdictions.
Other trademarks and trade names arethose of their respective owners.
Copyrights
Accesseries
Design and specifications are su bject to change without notice
Standby power consumption: 0.5 W
or less (Bar Speaker), 0.5 W or less
(Subwoofer)
Over 85% power efficiency of
amplifier block is achieved with the
full digital amplifier, S-Master.
Video formats supported by the system
Input/Output (HDMI Repeater block)
File 2D3D
Frame
packing Side-by-
Side (Half) Over-Under
(Top-and-
Bottom)
4096 × 2160p @ 23.98/24 Hz
3840 × 2160p @ 29.97/30 Hz3840 × 2160p @ 25 Hz3840 × 2160p @ 23.98/24 Hz1920 × 1080p @ 59.94/60 Hz1920 × 1080p @ 50 Hz1920 × 1080p @ 29.97/30 Hz1920 × 1080p @ 25 Hz1920 × 1080p @ 23.98/24 Hz1920 × 1080i @ 59.94/60 Hz1920 × 1080i @ 50 Hz1280 × 720p @ 59.94/60 Hz1280 × 720p @ 50 Hz1280 × 720p @ 29.97/30 Hz1280 × 720p @ 23.98/24 Hz720 × 480p @ 59.94/60 Hz 720 × 576p @ 50 Hz640 × 480p @ 59.94/60 Hz
Grille frame (1)
Remote control (1)
R03 (size AAA) batteries (2)
Digital optical cable for a TV (1)
IR blaster (1)
Stands (2) and screws (2)
Wireless transceivers (2)
Operating Instructions (1)
Reference Guide (1)
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HT-ST7
3
1. SERVICING NOTES ............................................. 4
2. DISASSEMBLY
2-1. Disassembly Flow ........................................................... 6
2-2. Panel (L/R) Assy ............................................................. 7
2-3. Panel (Rear L) Block, Panel (Rear R) ............................. 7
2-4. Bracket (Arm A/B) Assy, Fuse (F502) ............................ 8
2-5. Bracket (Air) Assy .......................................................... 8
2-6. Bracket (Bottom) Block .................................................. 9
2-7. Power Cord (AC1) .......................................................... 10
2-8. Chassis Block .................................................................. 11
2-9. POWER Board ................................................................ 12
2-10. AMP Board ..................................................................... 12
2-11. IO Board ........................................................................\
. 13
2-12. MAIN Board ................................................................... 13
2-13. Center Speaker Block ..................................................... 14
2-14. Loudspeaker (6.5 cm) (SP5, SP6, SP7, SP8, SP9) ......... 15
2-15. Cable with Connector (SPC3) ......................................... 16
2-16. Cable with Connector (SPC4) ......................................... 16
2-17. RC-S801/A (NFC1) ........................................................ 17
2-18. Bluetooth Module (BT1) ................................................ 18
2-19. Front Speaker (L) Block ................................................. 19
2-20. Loudspeaker (6.5 cm) (SP3) (L-ch) ................................ 19
2-21. Loudspeaker (2 cm) (SP1) (L-ch) ................................... 20
2-22. Cable with Connector (SPC1) (L-ch) ............................. 21
2-23. Front Speaker (R) Block ................................................. 22
2-24. DISPLAY Board ............................................................. 23
2-25. Loudspeaker (6.5 cm) (SP4) (R-ch) ................................ 23
2-26. Loudspeaker (2 cm) (SP2) (R-ch) ................................... 24
2-27. Cable with Connector (SPC2) (R-ch) ............................. 25
2-28. KEY Board ...................................................................... 26
2-29. Flexible Flat Cable (14P) (FFC1) ................................... 26
3. TEST MODE ............................................................ 27
TABLE OF CONTENTS4. DIAGRAMS
4-1. Block Diagram - HDMI Section - ................................... 30
4-2. Block Diagram - MAIN Section - ................................... 31
4-3. Block Diagram - AMP Section - ..................................... 32
4-4. Block Diagram - PANEL/POWER SUPPLY Section - ............................ 33
4-5. Schematic Diagram - MAIN Board (1/7) - ..................... 35
4-6. Schematic Diagram - MAIN Board (2/7) - ..................... 36
4-7. Schematic Diagram - MAIN Board (3/7) - ..................... 37
4-8. Schematic Diagram - MAIN Board (4/7) - ..................... 38
4-9. Schematic Diagram - MAIN Board (5/7) - ..................... 39
4-10. Schematic Diagram - MAIN Board (6/7) - ..................... 40
4-11. Schematic Diagram - MAIN Board (7/7) - ..................... 41
4-12. Printed Wiring Board - MAIN Board - ........................... 42
4-13. Printed Wiring Board - AMP Board - ............................. 43
4-14. Schematic Diagram - AMP Board (1/2) - ....................... 44
4-15. Schematic Diagram - AMP Board (2/2) - ....................... 45
4-16. Printed Wiring Board - IO Board - ................................. 46
4-17. Schematic Diagram - IO Board - .................................... 47
4-18. Printed Wiring Boards - PANEL Section - ..................... 48
4-19. Schematic Diagram - PANEL Section - .......................... 49
4-20. Printed Wiring Board - POWER Board - ........................ 50
4-21. Schematic Diagram - POWER Board - .......................... 51
5. EXPLODED VIEWS
5-1. Panel Section ................................................................... 66
5-2. Bracket (Bottom) Section ............................................... 67
5-3. Power Cord Section ........................................................ 68
5-4. Chassis Section ............................................................... 69
5-5. Front Block Section ........................................................ 70
5-6. Front Speaker (L) Section ............................................... 71
5-7. Center Speaker Section ................................................... 72
5-8. DISPLAY Board Section ................................................ 73
5-9. Front Speaker (R) Section ............................................... 74
5-10. Front Panel Section ......................................................... 75
6. ELECTRICAL PARTS LIST .............................. 76
Accessories are given in the last of the electrical parts list.
