Sony STR-DH550 / STR-DH750 Service Manual ▷ View online
STR-DH550/DH750
4
MODEL IDENTIFICATION
–BACK PANEL–
–BACK PANEL–
Part No.
Model
Part No.
DH550: US, Canadian
4-487-917-0[]
DH550: AEP, UK
4-487-917-1[]
DH550: Australian
4-487-917-2[]
DH550: 220 – 240 V AC area in E model
4-487-917-3[]
DH750: US, Canadian
4-448-923-0[]
DH750: AEP, UK
4-448-923-1[]
DH750: Australian
4-448-923-2[]
DH750: Taiwan
4-448-923-3[]
DH750: Mexican
4-448-923-4[]
DH750: Brazillian
4-448-923-6[]
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
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 solder.
Ordinary soldering irons can be used but the iron tip has to be
applied to the solder joint for a slightly longer time.
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
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.
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.
also be added to ordinary solder.
SPECIAL COMPONENT NOTICE
The components identified by mark
The components identified by mark
9 contain confidential
information.
Strictly follow the instructions whenever the components are
repaired and/or replaced.
Strictly follow the instructions whenever the components are
repaired and/or replaced.
NOTICE POUR COMPOSANTS SPÉCIAUX
Les composants identifiés par la marque
Les composants identifiés par la marque
9 contiennent des
informations confidentielles.
Suivre scrupuleusement les instructions chaque fois qu’un compo-
sant est remplacé et / ou réparé.
Suivre scrupuleusement les instructions chaque fois qu’un compo-
sant est remplacé et / ou réparé.
SECTION 1
SERVICING NOTES
NOTE OF REPLACING THE IC2402 AND IC2900 ON
THE MAIN BOARD
IC2402 and IC2900 on the MAIN board cannot exchange with
single. When these parts on the MAIN board are damaged,
exchange the entire mounted board.
THE MAIN BOARD
IC2402 and IC2900 on the MAIN board cannot exchange with
single. When these parts on the MAIN board are damaged,
exchange the entire mounted board.
NOTE OF REPLACING THE IC3514 ON THE HDMI
BOARD
IC3514 on the HDMI board cannot exchange with single. When
this part on the HDMI board is damaged, exchange the entire
mounted board.
BOARD
IC3514 on the HDMI board cannot exchange with single. When
this part on the HDMI board is damaged, exchange the entire
mounted board.
NOTE OF REPLACING THE IC902 (DH750) ON THE
STANDBY DCDC BOARD
IC902 (DH750) on the STANDBY DCDC board cannot exchange
with single. When this part on the STANDBY DCDC board is
damaged, exchange the entire mounted board.
STANDBY DCDC BOARD
IC902 (DH750) on the STANDBY DCDC board cannot exchange
with single. When this part on the STANDBY DCDC board is
damaged, exchange the entire mounted board.
CAPACITOR ELECTRICAL DISCHARGE PROCESSING
When checking the board, the electrical discharge is necessary for
the electric shock prevention.
Connect the resistor to both ends of respective capacitors.
When checking the board, the electrical discharge is necessary for
the electric shock prevention.
Connect the resistor to both ends of respective capacitors.
• Main
Board
C930,
C931
– MAIN BOARD (Conductor side) –
(To both ends of each capacitor)
800
:/2 W
C930
C931
Ver. 1.1
STR-DH550/DH750
5
SECTION 2
DISASSEMBLY
Note: This set can be disassemble according to the following sequence.
Note: Follow the disassembly procedure in the numerical order given.
2-1. CASE (ENTRY)
3 three screws
(+BVTP
(+BVTP
3
u 8)
4
4
2 three screws
(B-TYPE
(B-TYPE
4
u 8)
5 case (entry)
1 three screws
(B-TYPE
(B-TYPE
4
u 8)
2-1. CASE
(ENTRY)
(Page
5)
2-2. FRONT PANEL SECTION
(Page
(Page
6)
2-4. MAIN BOARD SECTION
(Page
(Page
8)
2-3. BACK PANEL SECTION
(Page
(Page
7)
SET
2-5. MAIN
BOARD
(Page
9)
Ver. 1.1
6
STR-DH550/DH750
2-2. FRONT PANEL SECTION
6 wire (flat type)
(14 core) (CN2600)
4 wire (flat type)
(29 core) (CN2004)
9 front panel section
8 five screws
(+BVTP
(+BVTP
3
u 8)
3 Wire is removed
from the pin, lead.
5 Wire is removed
from the pin, lead.
1 Wire is removed
from the pin, lead.
:LUHVHWWLQJ
INSULATION board (DH750)
pin, lead
(DH750)
(DH750)
front side
:LUHVHWWLQJ
USB INSULATION
MT PC BOARD
MT PC BOARD
front side
pin, lead
heat sink
MAIN board
2 CN2900
(5P)
(5P)
7 CN391
(4P)
(4P)
(DH750)
(DH750)
Ver. 1.1
STR-DH550/DH750
7
2-3. BACK PANEL SECTION
8 three screws
(+BVTP
(+BVTP
3
u 8)
8 six screws
(+BVTP
(+BVTP
3
u 8)
8 one screw
(+BVTP
(+BVTP
3
u 8)
1 CNP902 (4P)
3 CN941 (4P)
4 CN1901 (12P)
5 CN3513
(3P)
(3P)
2 Wire is removed
from the pin, lead.
6 wire (flat type)
(9 core) (CN2003)
7 wire (flat type)
(23 core) (CN3514)
9 five screws
(+BVTP
(+BVTP
3
u 8)
0 back panel section
(DH750)
(DH750)
pin, lead
STANDBY DCDC board
:LUHVHWWLQJ
rear side
Ver. 1.1