Sony STR-DB795 Service Manual ▷ View online
STR-DB795
50
50
STR-DB795
C963
C961
C957
JW954
JW959
JW960
JW961
JW952
JW953
JW955
JW956
JW957
IC952
IC953
IC955
IC954
JW950
JW951
JW903
CN953
CN954
Q960
CN952
R957
C956
R958
LP2001
C964
Q959
R955
Q957
C960
Q956
Q954
C953
C952
Q955
EB903
CN951
EB904
R959
R956
C954
C955
C958
C962
Q953
LP2002
CN950
R954
R960
R961
JW968
JW904
JW967
R965
JW905
R964
C965
R962
R963
JW958
C959
Q958
Q961
Q962
IC951
FH903
FH904
FH954
FH953
R913
JW905
JW904
JW902
JW903
D910
JW917
JW918
JW906
JW908
JW909
JW913
JW920
JW921
JW922
JW14
JW914
JW915
JW923
JW910
C904
D916
F906
C926
C925
D912
D915
D913
CN910
C909
CN911
CN907
C923
C924
D908
Q903
C918
EB901
R904
C915
C906
C916
D904
C908
D905
CN912
R902
D903
R911
R910
D902
F904
D909
D906
C902
C903
C907
F903
R912
C917
C920
F905
CN906
CN909
C919
JW907
D914
JW926
JW927
CN902
CN901
JW911
JW912
CN913
DC2 BOARD
1-689-175-
11
(16)
1
4
1
3
1
3
E
E
E
1
3
1
3
1
3
MAIN BOARD
CN409
16
DIGITAL
BOARD
CN1106
4
1
1
8
3
2
1
1
A CLASS BOARD
CN2003
36
A
B
C
D
E
F
G
H
I
1
2
3
4
5
6
7
8
9
E
E
E
B
C
E
DC1 BOARD
1-863-046-
(11)
11
1
(EXCEPT SP, MY)
(EXCEPT SP, MY)
(SP, MY)
(SP, MY)
6
1
3
SEC (3)
BOARD
BOARD
CN58
39
SEC (1)
BOARD
BOARD
CN53
38
(CHASSIS)
1-863-049-
11
(11)
4-8 BOARD
3
1
SEC (1)
BOARD
BOARD
CN52
41
S901
IMPEDANCE
SELECTOR
4
Ω
8
Ω
1
3
MAIN
BOARD
CN414
25
DIGITAL
BOARD
CN1110
2
MAIN BOARD
CN415
30
1
5
B
C
E
1
8
MAIN BOARD
CN422
29
AC BOARD
CN51
40
(Page 42)
(Page 38)
(Page 25)
(Page 38)
(Page 52)
(Page 52)
(Page 52)
(Page 52)
(Page 38)
(Page 25)
(Page 38)
6-33. PRINTED WIRING BOARDS – DC1/DC2/4/8 Boards –
:Uses unleaded solder.
•
See page 23 for Circuit Boards Location.
D902
G-1
D903
F-4
D904
F-4
D905
E-4
D906
E-4
D908
F-2
D909
H-2
D912
F-2
D913
F-1
D914
G-4
D915
F-1
D916
F-1
IC951
B-2
IC952
C-2
IC953
C-3
IC954
C-4
IC955
C-5
Q903
H-1
Q953
B-3
Q954
B-3
Q955
B-3
Q956
C-2
Q957
C-2
Q958
C-4
Q959
B-4
Q960
B-5
Q961
C-5
Q962
C-5
•
Semiconductor
Location
Location
Ref. No. Location
STR-DB795
51
51
STR-DB795
6-34. SCHEMATIC DIAGRAM – DC1/DC2/4/8 Boards –
JW907
CN906
CN912
CN911
C908
C923
C924
D915
D913
D912
D916
C925
C926
C909
R904
R902
CN909
JW901
CN910
R910
R912
R911
C902
C903
Q903
C920
EB901
CN907
C907
CN902
S901
CN901
CN951
CN950
C958
C954
C962
C960
C952
C956
CN952
CN953
R955
R956
R954
R959
C964
EB903
Q954
Q955
Q953
Q956
IC952
Q957
Q958
IC953
C959
R957
C957
Q959
C961
C963
IC955
IC954
C919
R913
CN913
C955
C953
R958
R963
R962
C965
CN954
Q960
Q961
Q962
R965
R964
IC951
C918
C917
C915
C916
D914
D904
D905
D903
D906
D908
F903
F904
D909
D910
C906
C904
D902
R960
R961
JW905
JW904
JW902
JW903
JW950
F905
F906
6P
6P
3P
1000
16V
220
25V
25V
220
25V
25V
11ES2
11ES2
11ES2
11ES2
220
25V
25V
220
25V
25V
330
50V
50V
10k
22k
5P
3P
2.2
1
1W
1
1W
2200
35V
1000
35V
2SB1241
0.01
8P
4700
16V
3P
5P
6P
4P
0.22
0.1
0.22
0.22
47
16V
470
16V
16V
8P
3P
680
10k
1k
10k
0.1
DTA114TSA
RT1N141S
2SD773
RT1N141S
7805
2SB733
RT1N141S
7805
0.1
680
4700
6.3V
6.3V
2SB733
1000
25V
1000
25V
M5F7815L
M5F7915L
0.1
200V
150
2P
0.22
0.22
10k
4.7k
10k
0.1
2P
2SB1565
2SC2785
2SC2785
47
220k
TA79005
0.015
100V
0.015
100V
8200
63V
8200
63V
D6SBN20
D1NL20U
D1NL20U
D1NL20U
D1NL20U
D4SBN20
T3.15AL
250V
T3.15AL
250V
10EDB40
47
35V
100
25V
25V
HZS20-1LTA
10
1/2W
10
1/2W
10A
125V
10A
125V
O-B
O-A
GND
GND
+24V
-24V
GND
+8v
-8v
P.RY
STOP
8V
SUB,T
GND
8V
(CHASSIS)
+B
-B
B GND
+15V
-15V
+5V(D)
+5V(V)
-5V(V)
GND(D)
-28V(FL)
+24V(RY)
GND(RY)
STOP
SUB,T
-18V REGULATOR
PW-RY
+8V
GND
IMPEDANCE
SELECTOR
-1
-2
LO-A
LO-B
V-POWER
D-POWER
D.GND
+5V.FL
+15V
-15V
GND
+5V.V
-5V.V
V.GND
+5V.D(+8V)
+5V(D)
+5V(V)
-5V(V)
GND(D)
+15V
-15V
(CHASSIS)
B- SWITCH
B- SWITCH
B- SWITCH
-5V REGULATOR
G
O
I
B+ SWITCH
+5V REGULATOR
G
O
I
B+ SWITCH
B+ SWITCH
+5V REGULATOR
I
G
O
B+ SWITCH
-15V REGULATOR
O
G
I
I
G
O
+15V REGULATOR
2
3
1
4
1
2
4
3
HI-A
HI-B
THERMAL DETECT
Q960-962
(NC)
(SP,MY)
(EXCEPT SP,MY)
(EXCEPT SP,MY)
(SP,MY)
4
Ω
8
Ω
(Page 29)
(Page 40)
(Page 41)
(Page 40)
(Page 29)
(Page 39)
(Page 53)
(Page 53)
(Page 53)
(Page 43)
(Page 53)
The components identified by mark
0
or dotted
line with mark
0
are critical for safety.
Replace only with part number specified.
STR-DB795
52
52
STR-DB795
CN52
CN53
CN57
CN58
CN3
JW56
D58
JW58
R58
JW5
JW6
C51
C54
C56
EB51
D56
CN1
CN2
T2
R55
RY1
R51
Q53
Q54
Q52
F1
D51
D52
D53
D57
D54
D55
R52
R53
R54
R56
R57
C55
C52
C53
CN51
R2
JW53
JW54
Q51
1-689-174-
11
(16)
SEC (1) BOARD
SEC (3) BOARD
1-689-176-
11
(16)
1-689-173-
11
(16)
PRI BOARD
2
1
1
3
1
4
1
1
5
3
T901
MAIN POWER
TRANSFORMER
A
B
C
D
E
1
2
3
4
5
6
7
8
9
10
11
DC1 BOARD
CN906
38
4-8 BOARD
CN901
41
DC1 BOARD
CN906
39
DIGITAL BOARD
CN1112
53
E
E
E
E
1-863-051-
11
(11)
AC BOARD
2
1
(AC IN)
1
2
(CHASSIS)
SUB POWER
TRANSFORMER
DC1 BOARD
CN912
40
(Page 50)
(Page 50)
(Page 25)
(Page 50)
(Page 50)
6-35. PRINTED WIRING BOARDS – AC/PRI/SEC1/SEC3 Boards –
:Uses unleaded solder.
•
See page 23 for Circuit Boards Location.
D51
D-9
D52
C-10
D53
C-10
D54
D-11
D55
D-10
D56
D-10
D57
D-10
D58
D-11
Q51
D-9
Q52
D-8
Q53
D-8
Q54
D-10
•
Semiconductor
Location
Location
Ref. No. Location
STR-DB795
53
53
STR-DB795
CN2
D51
R51
R52
R53
C53
C52
D53
D54
D55
D56
D57
JW52
C56
R57
Q52
Q53
CN51
CN57
CN58
F1
C55
R55
R56
R54
T2
C54
EB51
RY1
Q51
Q54
T901
CN53
CN52
CN1
CN3
C51
R58
D52
D58
R2
2P
1SS133T
2.2k
10k
680
0.056
0.0047
1SS133
11EQS04
11EQS04
11EQS04
11EQS04
470p
10k
2SA1015
BA1A4M
6P
4P
3P
1
50V
33k
10k
47k
2200
10V
2SC2785
2SC2785
3P
5P
2P
2P
2200
16V
100
1SS133
10EDB40
1
*
N
L
N
(CHASSIS)
P.RY
GND
STOP
8V
SUB,T
8V
GND
GND
AC 6V
AC 6V
GND
+8V
-8V
GND
LO-B
HI-B
LO-A
HI-A
GND
+24V
-24V
MAIN POWER
TRANSFORMER
TRANSFORMER
SUB POWER
(AC IN)
DRIVE
RELAY
AC POWER
DETECT
B+ SWITCH
*
T4AL 250V
F1
N
L
(TW)
(EXCEPT TW)
Q52,53
10A 125V
(Page 51)
(Page 51)
6-36. SCHEMATIC DIAGRAM – AC/PRI/SEC1/SEC3 Boards –
(Page 29)
(Page 51)
(Page 51)
The components identified by mark
0
or dotted
line with mark
0
are critical for safety.
Replace only with part number specified.
Click on the first or last page to see other STR-DB795 service manuals if exist.