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HCD-DZ555K/DZ556KB/DZ750K
6-3. BLOCK DIAGRAM – POWER SECTION –
TO FLUORESCENT
INDICATOR TUBE
AUDIO/AMP
P CONT2
F
SECTION
(Page 33)
IC501 (3/3)
SYSTEM CONTROLLER
P CONT3
41
P CONT2
40
RF/VIDEO
SECTION
(Page 32)
P CONT1
39
AC_CUT
20
Q503
RESET
12
SWITCH
HCD-DZ555K/DZ556KB/DZ750K
+31.5V
T801
DC/DC
CONVERTER
F1
F2
RECT
VFL
D801,802
D804,805
IC502
+3.3V
+3.3V REG
IC1105
+3.3V
+3.3V REG
IC1107
RF +3.3V
+3.3V REG
IC1703
+3.3V
+3.3V REG
SW +5V
IC504
+5V
+5V REG
EXCEPT MX, E32
IC201
VBUS+5V
+5V REG
A12V
IC307
+9V
+9V REG
SW+9V
IC1707
MOTOR DRIVE
HDMI+5V
+5V REG
CONTROLLER
xSYSRST
A
SW+3.3V
IC1110
+1.8V
+1.8V REG
IC3050
+1.8V
+1.8V REG
IC1702
+1.8V
+1.8V REG
IC503
RESET
TRANSFORMER
D931
IC931
VOLTAGE
DETECT
OSC
Q801
E4V
Q943,947
VOLTAGE
DETECT
+6V
TRANSFORMER
D942
+5V
Q504
IC942
5V SW
+5V REG
D941
IC941
+12V REG
Q945
D944
D943
IC943
+3.3V REG
E4V
E3.3V
D502
BUP3.3V
D504
IC951
VOLTAGE
DETECT
34
34
T901
(MAIN)
IC901
3
D
POWER
PROTECTION
D905
Q901
4
VOLTAGE
VCC
CONTROLLER
1
OCP/SYNC
PC901
PHOTO
5
FB/OLP
COUPLER
PC903
PHOTO
COUPLER
T902
D910
(SUB)
1
DRAIN
IC921
POWER
Q921
D922
PROTECTION
REG
4
VCC
START_UP
FB/OLP
6
PC902
PHOTO
COUPLER
POWER
Thermistor
F901
D901
AC IN
LINE
FILTER
8
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