Sony STR-DH720 / STR-DH720HP Service Manual ▷ View online
SERVICE MANUAL
SUPPLEMENT-1
1
1. DISCRIMINATION
................................................... 2
2. DIAGRAMS
2-1. Printed Wiring Board – DCDC Board – ......................... 4
2-2. Schematic Diagram – DCDC Board – ............................ 5
2-3. Printed Wiring Board – DIGITAL Board (Side A) – ...... 6
2-4. Printed Wiring Board – DIGITAL Board (Side B) – ...... 7
2-5. Schematic Diagram – DIGITAL Board (1/4) –............... 8
2-6. Schematic Diagram – DIGITAL Board (2/4) –............... 9
2-7. Schematic Diagram – DIGITAL Board (3/4) –............... 10
2-8. Schematic Diagram – DIGITAL Board (4/4) –............... 11
2-9. Printed Wiring Board – D-VIDEO Board (Side A) – ......... 12
2-10. Printed Wiring Board – D-VIDEO Board (Side B) – ......... 13
2-11. Schematic Diagram – D-VIDEO Board (1/4) – .............. 14
2-12. Schematic Diagram – D-VIDEO Board (2/4) – .............. 15
2-13. Schematic Diagram – D-VIDEO Board (3/4) – .............. 16
2-14. Schematic Diagram – D-VIDEO Board (4/4) – .............. 17
2-15. Printed Wiring Board – MAIN Board – .......................... 18
2-16. Schematic Diagram – MAIN Board (1/4) – .................... 19
2-17. Schematic Diagram – MAIN Board (2/4) – .................... 20
2-18. Schematic Diagram – MAIN Board (3/4) – .................... 21
2-19. Schematic Diagram – MAIN Board (4/4) – .................... 22
2-20. Printed Wiring Board
2-2. Schematic Diagram – DCDC Board – ............................ 5
2-3. Printed Wiring Board – DIGITAL Board (Side A) – ...... 6
2-4. Printed Wiring Board – DIGITAL Board (Side B) – ...... 7
2-5. Schematic Diagram – DIGITAL Board (1/4) –............... 8
2-6. Schematic Diagram – DIGITAL Board (2/4) –............... 9
2-7. Schematic Diagram – DIGITAL Board (3/4) –............... 10
2-8. Schematic Diagram – DIGITAL Board (4/4) –............... 11
2-9. Printed Wiring Board – D-VIDEO Board (Side A) – ......... 12
2-10. Printed Wiring Board – D-VIDEO Board (Side B) – ......... 13
2-11. Schematic Diagram – D-VIDEO Board (1/4) – .............. 14
2-12. Schematic Diagram – D-VIDEO Board (2/4) – .............. 15
2-13. Schematic Diagram – D-VIDEO Board (3/4) – .............. 16
2-14. Schematic Diagram – D-VIDEO Board (4/4) – .............. 17
2-15. Printed Wiring Board – MAIN Board – .......................... 18
2-16. Schematic Diagram – MAIN Board (1/4) – .................... 19
2-17. Schematic Diagram – MAIN Board (2/4) – .................... 20
2-18. Schematic Diagram – MAIN Board (3/4) – .................... 21
2-19. Schematic Diagram – MAIN Board (4/4) – .................... 22
2-20. Printed Wiring Board
– STANDBY-AVIDEO MT PC Board – ......................... 23
2-21. Schematic Diagram –
– STANDBY-AVIDEO MT PC Board – ......................... 24
3.
ELECTRICAL PARTS LIST
............................... 25
Subject: Change of DCDC board (Suffi x-21), DIGITAL
board (Suffi x-21), D-VIDEO board (Suffi x-21),
MAIN board (Suffi x-24) and STANDBY-AVIDEO
MT PC Board (Suffi x-24).
MAIN board (Suffi x-24) and STANDBY-AVIDEO
MT PC Board (Suffi x-24).
STR-DH720/DH720HP
US Model
STR-DH720/DH720HP
Canadian Model
AEP Model
STR-DH720
Ver. 1.2 2011.10
9-890-560-81
File this supplement with the service manual.
TABLE OF CONTENTS
In this set, DCDC, DIGITAL, D-VIDEO, MAIN and STANDBY-AVIDEO
MT PC boards have been changed in the midway of production.
Printed wiring board, schematic diagram and electrical parts list of new
type are described in this supplement-1.
Refer to original service manual for other information.
MT PC boards have been changed in the midway of production.
Printed wiring board, schematic diagram and electrical parts list of new
type are described in this supplement-1.
Refer to original service manual for other information.
STR-DH720/DH720HP
2
SECTION 1
DISCRIMINATION
– DCDC Board (Side A) –
Former : 1-883-236-11
New :
New :
1-883-236-21
– DIGITAL Board (Side A) –
Former : 1-883-126-11
New :
New :
1-883-126-21
– D-VIDEO Board (Side A) –
Former : 1-883-393-11
New :
New :
1-883-393-21
– MAIN Board –
Former : 1-883-403-13
New :
New :
1-883-403-24
– STANDBY-AVIDEO MT PC Board –
Former : 1-883-401-13
New :
New :
1-883-401-24
STR-DH720/DH720HP
STR-DH720/DH720HP
3
3
• A : B+ Line.
• B : B– Line.
• Voltages and waveforms are dc with respect to ground
• B : B– Line.
• Voltages and waveforms are dc with respect to ground
under no-signal (detuned) conditions.
no mark : FM
• Voltages are taken with VOM (Input impedance 10 M
• Voltages are taken with VOM (Input impedance 10 M
).
Voltage variations may be noted due to normal production
tolerances.
• Waveforms are taken with a oscilloscope.
Voltage variations may be noted due to normal production
Voltage variations may be noted due to normal production
tolerances.
• Circled numbers refer to waveforms.
• Signal path.
F :
F :
TUNER
(FM/AM)
f :
TUNER
L : VIDEO (AUDIO)
E :
E :
VIDEO
J
: DVD (DIGITAL)
c : CD (ANALOG)
• Abbreviation
CND :
CND :
Canadian
model
ECE : Continental European, East European
and Russian models
SECTION 2
DIAGRAMS
THIS NOTE IS COMMON FOR PRINTED WIRING BOARDS AND SCHEMATIC DIAGRAMS.
(In addition to this, the necessary note is printed in each block.)
(In addition to this, the necessary note is printed in each block.)
For Schematic Diagrams.
Note:
• All capacitors are in μF unless otherwise noted. (p: pF)
• All capacitors are in μF unless otherwise noted. (p: pF)
50 WV or less are not indicated except for electrolytics
and tantalums.
and tantalums.
• All resistors are in
and ¼ W or less unless otherwise
specifi ed.
• f : internal component.
• 2 : nonfl ammable resistor.
• 2 : nonfl ammable resistor.
• 5 : fusible resistor.
• C : panel designation.
Note:
The components identi-
fi
The components identi-
fi
ed by mark 0 or dotted
line with mark 0 are
critical for safety.
Replace only with part
number specifi ed.
critical for safety.
Replace only with part
number specifi ed.
Note:
Les composants identifi és
par une marque 0 sont
critiques pour la sécurité.
Ne les remplacer que
par une piéce portant le
numéro spécifi é.
Les composants identifi és
par une marque 0 sont
critiques pour la sécurité.
Ne les remplacer que
par une piéce portant le
numéro spécifi é.
For Printed Wiring Boards.
Note:
• X : Parts extracted from the component side.
• f : internal component.
•
• X : Parts extracted from the component side.
• f : internal component.
•
: Pattern from the side which enables seeing.
Caution:
Parts face side:
(SIDE A)
Pattern face side:
(SIDE B)
Parts face side:
(SIDE A)
Pattern face side:
(SIDE B)
Parts on the parts face side seen from
the parts face are indicated.
Parts on the pattern face side seen
from the pattern face are indicated.
the parts face are indicated.
Parts on the pattern face side seen
from the pattern face are indicated.
• Abbreviation
CND :
CND :
Canadian model
ECE : Continental European, East European
and Russian models
STR-DH720/DH720HP
STR-DH720/DH720HP
4
4
2-1. PRINTED WIRING BOARD – DCDC Board –
•
: Uses unleaded solder.
1
A
B
C
D
E
F
G
H
I
J
K
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
IC1600
IC1500
C1506
C1606
A1501
CN1501
6
1
7
1
CN1500
C1500
C1501
C1502
C1503
C1505
C1507
C1508
C1509
C1510
C1511
D1500
L1600
L1601
C1600
C1601
C1602
C1603
C1605
C1607
C1608
C1609
C1610
C1611
D1600
R1603
L1500
L1501
R1600
R1500
R1601
R1501
R1602
R1502
R1503
R1604
R1504
C1604
C1504
R1605
R1505
R1506
CL1500
CL1501
CL1502 CL1503 CL1504
CL1505
N
STANDBY-
AVIDEO MT
PC BOARD
CN904
(Page 23)
K
D-VIDEO
BOARD
CN3510
CN3510
(Page 12)
DCDC BOARD
(SIDE A)
(SIDE A)
1-883-236-
21
(21)
DCDC BOARD
(SIDE B)
(SIDE B)
1-883-236-
21
(21)
(CHASSIS)
Click on the first or last page to see other STR-DH720 / STR-DH720HP service manuals if exist.