11
11
RHT-G800
RHT-G800
3-4. BLOCK DIAGRAM – POWER SECTION –
1
4
6
8
F1
F2
VFL
TO FLUORESCENT
INDICATOR TUBE
ND801
T801
DC/DC
CONVERTER
IC1006
RESET
RECT
D802,803
D804,805
OSC
Q803
LED
DRIVE
Q802
LED
DRIVE
Q801
IC803
SIRCS
12
RESET
20
AC_CUT
SIRCS_IN
LED1
KEY2
KEY1
KEY0
LED2
40
46
65
28
23
4
11
21
24
25
60
62
63
61
P CONT2
CE
RST
FL_RST
FL_CLK
FL_DATA
FL_CS
CLK
DATA
CS
41
P CONT3
IC1002
(4/4)
SYSTEM CONTROLLER
IC802
FL DRIVE
+5V
97
95
94
Q1003
RESET
E3.3V
39
P CONT1
P CONT4
IC941
+12V REG
IC931
SHUNT
REG
IC1010
+9V REG
D943
D942
D941
D922
D910
IC921
AC/DC
CONVERTER
T902
TRANSFORMER (SUB)
T901
TRANSFORMER(MAIN)
PHOTO
COUPLER
D931
D905
Q943,947
D901
E+4V
E+4V
+31.5V
IC901
AC/DC
CONVERTER
AC IN
SW+3.3V,+3.3V
+5V
PHOTO
COUPLER
PHOTO
COUPLER
VCC
SWITCH
IC942
D+5V REG
IC943
+3.3V REG
IC951
SHUNT
REG
IC3050
+1.8V REG
IC3528
+1.8V REG
+6V
VOLTAGE
DETECT
VCC
SWITCH
Q901
A9V
A12V
D1006
D1007
E3.3V
+1.2V
BUP3.3V
IC1001
+2.6V REG
IC1
+1.2V REG
IC1008
+5V REG
+5V
+1.8V
+3.3V
+1.8V
D
VCC
OCP/SYNC
FB/OLP
DRAIN
VCC
START UP
FB/OLP
3
4
1
1
2
4
1
2
4
1
2
4
IC3526
+3.3V REG
1
2
4
IC3527
+3.3V REG
1
2
4
5
3-50
3.3V
3.3V
HDMI
POWER
D801
POWER
S801
SELECTOR
S802
VOL–
S803
VOL+
S804
F
SIGNAL
PROCESSOR
SECTION
(Page 9)
PC902
PC903
PC901
Q921
F901
POWER
Thermistor
LINE
FILTER