34
34
HCD-DZ555K/DZ556KB/DZ750K
HCD-DZ555K/DZ556KB/DZ750K
6-3. BLOCK DIAGRAM – POWER SECTION –
F1
F2
VFL
TO FLUORESCENT
INDICATOR TUBE
T801
DC/DC
CONVERTER
RECT
D801,802
D804,805
OSC
Q801
6
P CONT2
xSYSRST
IC501 (3/3)
SYSTEM CONTROLLER
D943
D942
D944
D941
D922
D910
Q921
T902
TRANSFORMER
(SUB)
T901
TRANSFORMER
(MAIN)
PC902
D931
D905
Q943,947
PC901
PC903
D901
E4V
RF +3.3V
+31.5V
AC IN
SW+3.3V
+5V
+5V
REG
+6V
SW+9V
VOLTAGE
DETECT
Q901
VOLTAGE
CONTROLLER
Q945
MOTOR DRIVE
CONTROLLER
+3.3V
+3.3V
HDMI+5V
+9V
A12V
+1.8V
D502
D504
E3.3V
BUP3.3V
+1.8V
+1.8V
Q504
5V SW
Q503
SWITCH
VBUS+5V
EXCEPT MX, E32
+3.3V
E4V
SW +5V
F901
POWER
Thermistor
LINE
FILTER
w w w . x i a o y u 1 6 3 . c o m
Q Q 3 7 6 3 1 5 1 5 0
9
9
2
8
9
4
2
9
8
T E L
1 3 9 4 2 2 9 6 5 1 3
9
9
2
8
9
4
2
9
5
1
5
1
3
6
7
3
Q
Q
TEL 13942296513 QQ 376315150 892498299
TEL 13942296513 QQ 376315150 892498299