Block Diagram - Display/Power Section - Sony STR-K890 Service Manual

4-2. BLOCK DIAGRAM – DISPLAY/POWER SECTION –
SW
IC701
POWER AMP
+V OUT2 12
Q701,702
LIMITER
L 8 IN2 NF2 9
-V OUT2 11
IC601
POWER AMP
+V OUT2 12
Q651,652
MAIN A
LIMITER
SECTION
(Page 14)
SL SL 8 IN2 NF2 9
-V OUT2 11
IC501
POWER AMP
+V OUT2 12
Q501,502
LIMITER
C 8 IN2 NF2 9
-V OUT2 11
+V OUT1 2
Q571,572
LIMITER
SB 6 NF1 5
IN1
-V OUT1 3
J2000 IC2000
AUTO CAL MIC 5 AMP
82 X0
X1101
24MHz
X1
83
IC103
REMOTE
CONTROL 2 54 SIRCS
RECEIVER
9 16 17
STR-K890
Q703
BOOSTER
Q740
AF POWER
Q705,706 PROTECT
Q704
R-CH
CURRENT
BOOSTER
DETECT
R-CH R-CH
Q653
BOOSTER
Q640
AF POWER
Q655,656 PROTECT
Q654
CURRENT SR-CH
BOOSTER DETECT
SR-CH
Q503
BOOSTER
Q540
AF POWER
Q505,506
PROTECT
Q504
CURRENT
BOOSTER DETECT
Q533
BOOSTER
Q580
AF POWER
Q535,536
PROTECT
Q534
CURRENT
BOOSTER
DETECT
SR-CH
R-CH
1 D1107
Q722,723,725 D841
Q793,795 VACS D1108
PROTECT CONTROL
D1109
SWITCH
D1110
D1111
61 45
38
SYSTEM CONTROLLER
IC1101(2/2)
IC100
FL DRIVE
SEG1-17 14
7 DIN FL101
29
IC101
31
FLUORESCENT F1
8 CLK
BUFFER
INDICATOR TUBE
F2
9 STB
42
GRID1-11 32
J309
AUDIO OUT SUB WOOFER
RY560
Q560
RELAY
DRIVE
TM602
L
RY710
FRONT B
Q611 R-CH R
RELAY
DRIVE
TB001
L
FRONT A
RY701
R-CH R
Q710
RELAY
DRIVE
IMPEDANCE USE 6-16Ω
L
SURROUND
RY601
SR-CH R
Q610
RELAY
DRIVE
TM603
CENTER
RY610
Q612
RELAY
DRIVE
SURROUND
BACK
J790
R-CH
PHONES
RY791
Q790
RELAY
DRIVE
70 67 66 69 62 55 72 89
FUSE_DETECT
AVRH
AVCC
VCC3
VCC5
RSTX
STOP
POWER_RY 58
64 65 32 31 39 40 56
3 2 3 2
FUNCTION FUNCTION S100
ENCODER ENCODER
KEY KEY
?/1
RV102 RV101 S109-112,115 S101-108
MASTER INPUT
VOLUME SELECTOR
15 15
IC807
+5V
VIDEO
2 1
REG
+5V
IC1902
D920-923
TUNER +10V
3 1
+10V REG
RELAY
+B
IC801
+7V
AUDIO
1 3
REG
+7V
IC1001
AUDIO
+5V
3 1
+5V REG
IC802
AUDIO -7V
3 2
SPEAKERS -7V REG
IC804
-5V
VIDEO
2 1
-5V REG
F4001
D4001
IC1906 IC4001
DMPORT +5V +7V
4 2 2 1
+5V REG REG
F4002
D802
+B
-B
R803
FL101
Q801
-20V
-20V REG
Q691,692
POWER AMP
-B
-B
SWITCH
IC691
PROTECT
2 7
DET
RY801
Q809
RELAY
DRIVE
F1
IC5003
F2
HDMI
+3.3V
3 1
+3.3V
REG
IC5006
HDMI +5.8V
4 2
+5.8V REG
1
D805-808
IC1031
+5V
+5V 3 1
REG
IC1903
+3.3V
+3.3V 2
REG
63 4
+2.5V
+2.5V 5
REG
36
D1001
35
D910-913
+3.3V
IC1904
84 (STBY)
+3.3V
23 3 1
REG
IC1111
77 1 RESET 2
D914
Q921
48
AC DET
Q901
RELAY
DRIVE
• R-CH is omitted due to same as L-CH.
• Signal Path
: FM
STR-K890
T901
F901
T902
AC
IN
D915
RY901