Sony STR-DB900 - Block Diagram - DISPLAY Section

1616
STR-DB900
STR-DB900
4-4. BLOCK DIAGRAM — DISPLAY SECTION —
7
123
10013
VOUT
KEY NETWORK
S802-806
S807-810
122 121
45
638
21
BUFFER
IC803
FL DRIVER
IC802
SYSTEM
CONTROL
IC202 (2/2)
T801
+6.5V
D803
VEE
V-CONT
P-CONT1
AC-STOP
+3.3V
+12V
-12V
(DAMP)
+10V
(GATE)
+12V
(DAMP)
+6.5V
+6.2V
+3.3V
(STBY)
15V-53V
SIRCS
KEY1
LED-STANDBY
VOL-UP
VOL-DOWN
INPUT-UP
INPUT-DOWN
KEY2-QS-ONLY
+5V
910
SEG1
I
SEG16
GR1D1
I
GR1D12
FL801
FLUORESCENT
INDICATOR
TUBE
DIN
FL-DATA
FL-CLK
FL-LATCH
8
CLK
9
STB
3 1
47
86
98
P-STOP
GATE
Q920,D931
GATE
Q905,908
Q907
Q902
RECT
D930
RECT
D905
D920
D930
D921
D933
D919
(+5.6V)
116
120
RV801
VOLUME
(ENCODER)
119
51
50
D808
STANDBY
118
RV802
INPUT SELECT
(ENCODER)
117
STOP
30
+3.3V
14
I
29
42
I
31
3 1
1
4 3
5
2
3 2
3 1
1
3
2
+17V REG.
Q901
RECT.
D913
RECT.
D914
RECT.
D915
+10V REG.
IC907
-12V REG.
IC906
+3.3V REG.
IC904
+3.3V REG.
IC910
BUFFER
IC909
SHUNT
REG.
IC905
+3.3V REG.
IC908
SHUNT REG.
IC903
SWITCHING
REGULATOR
IC902
IR RECEIVER.
IC801
SWITCHING
REGULATOR
IC901
FB
AMP
DRAIN
VCC
T902
Q903
DCB/FB
SURCE
GND
3
4
5
DRAIN
D912
D906
D902 D904
D929 D903
T901
VC
FL902
FL901
F901
S1
~
AC IN
POWER
ON/OFF
VCC
1
OCP/SYNC
2
GND
PB/OLP
+15V REG.
Q912,914
+5V REG.
Q910
+20V REG.
Q904
FEED BACK
ISOLATOR
PC901
AC-STOP
ISOLATOR
PC902
BUFFER
Q906,917
RIPPLE
FILTER
Q990
D801,802
D804,805
RECT.
3 1
8
1
1
3
2 1
4 3
DC/DC
CONVERTER
Q801,802
LED
DRIVER
Q803
REF
IN+ OUT
D932
(5.6V)
D
C
DAMP
SECTION
(Page 15)
AUDIO DSP
SECTION
(Page 14)