STR-K5900P/K9900P
17
17
STR-K5900P/K9900P
4-6. BLOCK DIAGRAM — POWER SECTION —
8
12
11
DRIVE
POWER AMP
Q701-704
CURRENT
DETECT
Q705,706
RY791
RY610
RY601
RY701
PRE DRIVER
IC701
IN 2
+VOUT2
-VOUT2
SPEAKERS
IMPEDANCE
USE 8-16
Ω
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
TUNER/
AUDIO
SECTION
C
RY901
RY801
K9900P
D804
F1
F2
-20V
+3.3V
(STBY)
+2.6V
+5V-1
-7V
+7V
TU+10V
-20V
RECT
D910-913
T902
POWER
TRANSFORMER
D914
Q921
D915
D1110
D1111
D1107
D1108
~
AC IN
OVERLOAD
DETECT
D740,Q740
1
61
12
11
DRIVE
POWER AMP
Q501-504
CURRENT
DETECT
Q505,506
-32V REG
Q801
-B SWITCH
Q691,692
RELAY
DRIVER
Q901
PRE DRIVER
IC501
IN2
+VOUT2
-VOUT2
OVERLOAD
DETECT
D540,Q540
8
12
11
DRIVE
POWER AMP
Q651-654
CURRENT
DETECT
Q655,656
PRE DRIVER
IC601
IN 2
+VOUT2
-VOUT2
OVERLOAD
DETECT
D640,Q640
RELAY
DRIVER
Q790
RELAY
DRIVER
RELAY
DRIVER
Q610
RY501
RELAY
DRIVER
Q550
69
66
62
PROTECTOR
D721,722,732
Q722,723,725,793,795
55
58
48
68
OVERLOAD
DETECT AMP
7
2
IC691
-B-1
-B
BACK-UP
SWITCH
4
5
+3.3V
2
IC1901
+5V-2
+5V
REG
1
3
IC1001
+3.3V
REG
1
3
IC1904
+10V
REG
1
3
IC1902
-15V
+15V
+7V
REG
3
1
IC801
-7V
REG
2
3
IC802
+5V
REG
1
3
IC1031
+B
R-CH
R-CH
R-CH
R-CH
R-CH
R-CH
RECT
D802
RECT
D920-923
RECT
D805-808
T901
POWER
TRANSFORMER
TM610
R
FRONT A
L
R-CH
TM601
TM501
J791
PHONES
HP-RY
SB-RY
FRONT RY
REAR-RY
C/SB RY
HP DETECT
HP-RY
HP DETECT
SB-RY
FRONT-RY
REAR-RY
C/SB RY
HP_RY
FRONT RY
REAR_RY
PROTECTOR
HP DETECT
P0WER RY
67
SP_B_RY
72
BRIDGEABLE RY
STOP
C/SB RY
SYSTEM
CONTROL
IC1101 (4/4)
PRE
DRIVE
PRE
DRIVE
6
2
3
DRIVE
POWER AMP
Q533,534,571,572
CURRENT
DETECT
Q535,536
IN1
+VOUT1
-VOUT1
OVERLOAD
DETECT
D580,Q580
PRE
DRIVE
SBL-CH
-B-1
+B
-B-1
+B
-B-1
+B
PRE
DRIVE
RELAY
DRIVER
Q710
RELAY
DRIVER
Q809
R810
R811
F901
R910
RELAY
SWITCH
Q800(DE698/DV10)
Q810(DE98)
K5900P
• Signal path
: TUNER (FM/AM)
• R-ch is omitted due to
same as L-ch.
(Page 13)
