Read Sony STR-DE895 Service Manual online
STR-DE895
25
4-7. DIAGRAMA EM BLOCOS — SEÇÃO POWER —
(Page 19)
8
12
11
DRIVE
POWER AMP
Q571-574
CURRENT
DETECT
Q575,576
RY240
RY2880
RY600
RY500
RY700
PRE DRIVER
IC500
IN 2
+VOUT2
-VOUT2
SPEAKERS
IMPEDANCE
USE 8-16Ω
R
L
FRONT B
L
SURROUND
SURROUND
BACK
CENTER
R
R-CH
R-CH
R-CH
FL-CH
FR-CH
SL-CH
C-CH
R-CH
SR-CH
R-CH
SBR-CH
R-CH
TUNER/
AUDIO
SECTION
D
RY911
RY801-803
D251
F1
F2
-30V
+3.3V
(STBY)
+2.5V
+5V-1
-7V
+7V
TU+10V
-48V
R-CH
F902
RECT
D921-924
T902
POWER
TRANSFORMER
D925
Q921
D926
D1110
D1111
D1107
D1108
~
AC IN
OVERLOAD
DETECT
D575,Q577
6
23
2
3
DRIVE
POWER AMP
Q421-424
CURRENT
DETECT
Q425,426
-48V REG
Q235
+48V REG
Q220,225
RELAY
DRIVER
Q911
PRE DRIVER
IC400
IN 1
+VOUT 1
-VOUT 1
OVERLOAD
DETECT
D425,Q427
8
12
11
DRIVE
POWER AMP
Q671-674
CURRENT
DETECT
Q675,676
PRE DRIVER
IC600
IN 2
+VOUT2
-VOUT2
OVERLOAD
DETECT
D675,Q677
RELAY
DRIVER
Q240
RELAY
DRIVER
Q2881
RELAY
DRIVER
Q600
RY400
RELAY
DRIVER
Q400
21
18
42
PROTECTOR
D201-203
Q200-202
Q200-202
24
25
60
20
+5V
(STBY)
OVERLOAD
DETECT AMP
7
2
IC210
Q210
+48V
-B
BACK-UP
SWITCH
4
5
+3.3V
2
IC1901
+5V-2
+5V
REG
1
3
IC1001
+5V
REG
1
3
IC1011
+3.3V
REG
1
3
IC1021
D1001
+10V
REG
1
3
IC1902
-V
+V
-30V
+7V
REG
1
3
IC260
-7V
REG
2
3
IC265
+5V
REG
1
3
IC1031
D916
+B SWITCH
Q912,913
R-CH
R-CH
R-CH
-48V +48V
-48V +48V
-48V +48V
R-CH
R-CH
R-CH
RECT
D801,802
RECT
D865
D865
RECT
D851-854
T901
POWER
TRANSFORMER
TM2880
R
FRONT A
L
R-CH
TM601
TM602
J2501
PHONES
S901
VOLTAGE
SELECTOR
220V
220V
127V
HP-RY
FRONT B-RY
FRONT A-RY
REAR-RY
CENTER-RY
HP DETECT
SB-RY
J911
AC
OUTLET
HP-RY
SB-RY
HP DETECT
HP DETECT
FRONT A-RY
REAR-RY
CENTER-RY
HP_RY
SP_A_RY
REAR_RY
PROTECTOR
HP_CTRL
PW-RY
43
SUB-T
19
40
SP_B_RY
SB_RY
45
BRIDGEABLE RY
VOLT_DETEC_STOP
CENTER_RY
SYSTEM
CONTROL
IC1101 (4/4)
PRE
DRIVE
PRE
DRIVE
SBL-CH
8
12
11
DRIVE
POWER AMP
Q471-474
CURRENT
DETECT
Q475,476
IN 2
+VOUT 2
-VOUT 2
OVERLOAD
DETECT
D475,Q477
R-CH
PRE
DRIVE
PRE
DRIVE
RELAY
DRIVER
Q500
RELAY
DRIVER
Q809
R861
D290
D291
R862
F904
R851
S901
-3
-2
-1
RELAY
DRIVER
Q700
R-CH
L
R
RELAY
SWITCH
-30V REG
Q250
• Signal path
: TUNER (FM/AM)
• R-ch is omitted due to
same as L-ch.
same as L-ch.
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