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HCD-DZ118K
6-5. BLOCK DIAGRAM – POWER SECTION –
T801
DC/DC
CONVERTER
F1
F2
TO FLUORESCENT
RECT
INDICATOR TUBE
VFL
D801,802
D804,805
IC501 (4/4)
SYSTEM CONTROLLER
P CONT2
40
P CONT3
41
P CONT1
39
AC_CUT
20
Q506
RESET
12
SWITCH
HCD-DZ118K
+31.5V
+5V
OSC
Q801
Q943,947
A12V
+9V
SW+9V
IC516
A5V
+5V REG
+5V
IC502
+3.3V
+3.3V REG
IC1105
+3.3V
+3.3V REG
SW +5V
IC1107
RF +3.3V
+3.3V REG
D503
SW+3.3V,+3.3V
E3.3V
+1.8V
BMP3.3V
D505
+1.8V
IC511
RESET
T901
TRANSFORMER(MAIN)
D931
D905
IC931
VOLTAGE
DETECT
PC901
PHOTO
COUPLER
E4V
PC903
VOLTAGE
PHOTO
DETECT
COUPLER
D941
IC360
IC941
+9V REG
+12V REG
Q945
D944
MOTOR DRIVE
CONTROLLER
+6V
IC942
Q502
D+5V REG
5V SW
E 4V
D943
IC1109
IC943
+1.8V REG
+3.3V REG
IC951
IC3050
VOLTAGE
+1.8V REG
DETECT
PHOTO
COUPLER
30
30
D901
IC901
Q901
POWER
VOLTAGE
PROTECTION
CONTROLLER
D910
T902
TRANSFORMER (SUB)
IC921
Q921
D922
POWER
REG
PROTECTION
D942
PC902
POWER
Thermistor
F901
AC IN
LINE
FILTER
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