STR-DH820
3
1.
SERVICING NOTES
............................................. 3
2. DISASSEMBLY
2-1. Disassembly Flow ........................................................... 5
2-2. Case ................................................................................. 5
2-3. D-VIDEO Board ............................................................. 6
2-4. Front Panel Block ........................................................... 7
2-5. Tuner (FM/AM) .............................................................. 7
2-6. DIGITAL Board .............................................................. 8
2-7. Back Panel Block ............................................................ 8
2-8. CONNECTION Board .................................................... 9
2-9. Main Block ..................................................................... 9
2-10. MAIN Board ................................................................... 10
3.
TEST MODE
............................................................ 11
4. ELECTRICAL
ADJUSTMENT
........................... 13
5. DIAGRAMS
5-1. Block Diagram - TUNER/AUDIO Section - .................. 15
5-2. Block Diagram - DIGITAL, DSP Section - .................... 16
5-3. Block Diagram - A VIDEO Section - ............................. 17
5-4. Block Diagram - D-VIDEO Section - ............................. 18
5-5. Block Diagram - KEY/DISPLAY/USB Section -........... 19
5-6. Block Diagram - POWER KEY Section - ...................... 20
5-7. Printed Wiring Board - DIGITAL Board (Side A) - ....... 22
5-8. Printed Wiring Board - DIGITAL Board (Side B) - ....... 23
5-9. Schematic Diagram - DIGITAL Board (1/4) - ................ 24
5-10. Schematic Diagram - DIGITAL Board (2/4) - ................ 25
5-11. Schematic Diagram - DIGITAL Board (3/4) - ................ 26
5-12. Schematic Diagram - DIGITAL Board (4/4) - ................ 27
5-13. Printed Wiring Board - MAIN Board - ........................... 28
5-14. Schematic Diagram - MAIN Board (1/4) - ..................... 29
5-15. Schematic Diagram - MAIN Board (2/4) - ..................... 30
5-16. Schematic Diagram - MAIN Board (3/4) - ..................... 31
5-17. Schematic Diagram - MAIN Board (4/4) - ..................... 32
5-18. Printed Wiring Board - D-VIDEO Board (Side A) - ...... 33
5-19. Printed Wiring Board - D-VIDEO Board (Side B) - ...... 34
5-20. Schematic Diagram - D-VIDEO Board (1/5) - ............... 35
5-21. Schematic Diagram - D-VIDEO Board (2/5) - ............... 36
5-22. Schematic Diagram - D-VIDEO Board (3/5) - ............... 37
5-23. Schematic Diagram - D-VIDEO Board (4/5) - ............... 38
5-24. Schematic Diagram - D-VIDEO Board (5/5) - ............... 39
5-25. Printed Wiring Board - DSP Board - .............................. 40
5-26. Schematic Diagram - DSP Board (1/2) - ........................ 41
5-27. Schematic Diagram - DSP Board (2/2) - ........................ 42
5-28. Printed Wiring Board - A VIDEO Board - ...................... 43
5-29. Schematic Diagram - A VIDEO Board - ......................... 44
5-30. Printed Wiring Board - CONNECTION Board - ............ 45
5-31. Schematic Diagram - CONNECTION Board - .............. 45
5-32. Printed Wiring Board - STANDBY Board - ................... 46
5-33. Schematic Diagram - STANDBY Board - ...................... 47
5-34. Printed Wiring Boards - PANEL Section - ..................... 48
5-35. Schematic Diagram - PANEL Section - .......................... 49
5-36. Printed Wiring Board - DCDC Board - .......................... 50
5-37. Schematic Diagram - DCDC Board - ............................. 51
5-38. Printed Wiring Board - USB Board - .............................. 52
5-39. Schematic Diagram - USB Board - ................................. 53
5-40. Printed Wiring Board - HEADPHONE Board - ............. 54
5-41. Schematic Diagram - HEADPHONE Board - ................ 54
5-42. Printed Wiring Board - TEMP-SENSOR Board - .......... 54
5-43. Schematic Diagram - TEMP-SENSOR Board - ............. 54
6.
EXPLODED VIEWS
6-1. Case Section .................................................................... 80
6-2. DIGITAL Board Section ................................................. 81
6-3. Front Panel Section ......................................................... 82
6-4. Back Panel Section ......................................................... 83
6-5. Chassis Section ............................................................... 84
7.
ELECTRICAL PARTS LIST
.............................. 85
TABLE OF CONTENTS
SECTION 1
SERVICING NOTES
MODEL IDENTIFICATION
–BACK PANEL–
Model
Part No.
US
4-261-847-0
[]
CND
4-261-847-1
[]
UK, AUS, ECE
4-261-847-2
[]
TW
4-261-847-4
[]
•
Abbreviation
AUS :
Australian
model
CND
: Canadian model
ECE
: Continental European, East European and Russian models
TW :
Taiwan
model
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)
: LEAD FREE MARK
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
fl
ow)
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.
NOTE OF REPLACING THE IC1500, IC1600 AND
IC1700 ON THE DCDC BOARD
IC1500, IC1600 and IC1700 on the DCDC board cannot exchange
with single. When these parts on the DCDC board are damaged,
exchange the entire mounted board.
NOTE OF REPLACING THE IC2104 ON THE DIGITAL
BOARD
IC2104 on the DIGITAL board cannot exchange with single.
When this part on the DIGITAL board is damaged, exchange the
entire mounted board.
NOTE OF REPLACING THE IC3500 AND IC3501 ON
THE D-VIDEO BOARD
IC3500 and IC3501 on the D-VIDEO board cannot exchange with
single. When these parts on the D-VIDEO board are damaged,
exchange the entire mounted board.
Part No.
