Sony STR-DB725 User Manual

– 9 – – 10 –
STR-DB725/DB825
– POWER SECTION –
RELAY
DRIVE
Q601
LIMITER
Q504
14
5
15
6
1
2
3
VEE
VCC
IN
MUT
+VE
NF
–VE
13 VCC
POWER AMP(L)
IC601
L
+B
–B
LIMITER
Q505
BOOSTER
Q506
BOOSTER
Q507
CUR DET
Q508
PROTECTOR
Q509,510
Q511
LIMITER
Q604
9
15
12
11
VEE
IN
+VE
NF
–VE
13 VCC
POWER AMP(C/W)
IC001
C
+B
–B
LIMITER
Q605
BOOSTER
Q606
BOOSTER
Q607
CUR DET
Q608
PROTECTOR
Q609,610
Q611
LIMITER
Q704
MUTE
Q691,692
14
5
15
6
1
2
3
VEE
VCC
IN
MUT
+VE
NF
–VE
13 VCC
POWER AMP(SL)
IC701
SL
+B
–B
LIMITER
Q705
BOOSTER
Q706
BOOSTER
Q707
CUR DET
Q708
8
RY602
RELAY
DRIVE
Q546
RY501
RELAY
DRIVE
Q596
RY502
B
A
A+B
OFF
S155
SPEAKERS
RELAY
DRIVE
Q645
RY601
RELAY
DRIVE
Q745
RY701
RELAY
OVER LOAD SW
Q609, 610, 709, 710
DRIVE
Q544
Q611
RY503
RELAY
DRIVE
Q901
RY901
J501
C
S(L)
S(R)
R CH
R CH
WIRELESS
REAR
SPEAKER
CNJ701
CENTER
WOOFER
J701
PHONES
TM701
FRONT
SPEAKER
TM501
R CH
R CH
POWER
CONT
IC901
58
3
6
DELAY
+B SW
Q902
SWITCH
Q747,748
D801
SWITCH
Q613,616
PROTECTOR
Q547-549
D806 F2
F1
+5.6V
F801
F802
D802-805
+B
-B
IMPEDANCE
SELECTOR
8
4
S501
F901
F903
D901-904
DB825
CNJ909
CNP901
AC IN
L
R
:FM
:CD
B
MAIN
SECTION
• Signal Path
• RCH is omitted
IN
W
6
14 VCC
2+VE
3–VE
1
+18V
REG
IC702
3
T901
F803
F804
1
-15V
REG
3
3
+5V
REG
1
REG
Q801
IC809
+24V
-24V
-30V
3
+15V
REG
1
IC809
IC801
3
+12V
REG
1
IC451
3
+5V
REG
1
IC450
+15V
+12V
+5V
IC803
-15V
T902
SYSTEM CONTROL/
MODE CONTROL
IC103(2/2)
P RY
A
MAIN
SECTION
8
AC MUTE
44
FRONT RY
47
PROTECTOR
50
SP OFF
43
CENTER RY
45
MIX SUB RY
42
SUR RY
48
POWER RY
REMOTO
CONTROL
RECEIVER
IC101
26
SIRCS
Q105
RESET
Q101
10
RESET
Q102
X1
12
X2
11
X101
4.19MHz
KEY1
33
FUNCTION
KEY
S102-S111
KEY2
32
FUNCTION
KEY
S115-122
KEY3
31
FUNCTION
KEY
S114, S125-130
MUTING LED
59
MUTING
D116
FUNCTION
RV101
POWER
S151
POWER
56
LED DRIVE
Q103,104
TONE
60
SURR
61
INDEX
62
DIRECT PASS
58
5.1 INPUT
57
Q103,104
D111,135D115-113
TUNER
64
VIDEO1
70
MD/TAPE
66
PHONO
63
TV/DBS
67
131
D124
CD
65
71 78
.
80 88
100 89
FL101
FL TIBU
F2 F1
P1 17
G1 12
09
39
STOP
I/R
CONT
IC102
I/O
BUFFER
Q106
RESET
Q107
11
14
12
5
33
2
CTRL A1 LAT
28
15 16
X102
7.28MHz
I/R
DET
IC107
LED
DRIVE
Q129,130
D101-103
VIDEO 3
68
VIDEO 2
69
CTRL A1
REAR
SPEAKER
RE B
54
RE A
53

Sony STR-DB725 Specifications

General

Brand	Sony
Model	STR-DB725
Category	Stereo Receiver
Language	English