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HCD-DZ265K/DZ266K/DZ270K/DZ570K/DZ777K
HCD-DZ265K/DZ266K/DZ270K/DZ570K/DZ777K
38
38
6-6. BLOCK DIAGRAM – POWER Section –
F1
FL100
FLUORESCENT
INDICATOR
TUBE
T100
DC/DC
CONVERTER
TRANSFORMER
T901
MAIN
TRANSFORMER
D931
+31.5V
(DIGITAL AMP)
D901
D905
T903
SUB
TRANSFORMER
Q100
DC/DC
CONVER
TER
D100
D101
D102
FUNCTION
KEY
S102 – 104
IC501 (6/6)
SYSTEM CONTROL
IC100
FL DISPLAY
DRIVER
FUNCTION
KEY
S100,101
ROTARY
ENCODER
S107
VOLUME
E4V
Q922
+21V REG.
PC902
FEED BACK
PC904
STANDBY
CONTROL
Q930 – 932
POWER
CONTROL
Q120,121
B+ SWITCH
IC921
SWITCHING
REGULATOR
D902
D923
Q921
D947
D502
PS954
P.CONT3
P.CONT3
E4V
E+4V
6V
+6V
E3.3V
BUP3.3V
+4V
(S-AIR)
DZ904
FR929
IC901
SWITCHING
REGULATOR
F901
LF901,902
FILTER
PC901
FEED BACK
PC903
STANDBY
CONTROL
Q943,947
POWER DOWN
DETECT
Q949,950
POWER
PROTECT
EN
FUNCTION
KEY
S105,106
D505
!
/
S108
F2
5V
P.CONT2
+3.3V5
+3.3V4
USB 5V
VBUS_SW
A+5V
+5V
D3.3V
+1.8V
5V
(FL)
SW3.3V
VIDEO 5V
(DMPOART)
+1.8V
(IC1101)
+5V
(IC404)
+3.3V3
(IC1101)
VDD3.3V
(IC1101)
RF+3.3V
P.CONT1
Q503
RESET
D911
PS956
D916
D941
F945
Q945
B+ SWITCH
D912
M+14V
M+9V
P.CONT1
12V
M+14V
M+9V
A+9V
A12V
(AC IN)
Q901
ON/OFF SWITCH
DZ570K/DZ777K