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HBD-E370/E470/E570/E870/T57
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5-6. BLOCK DIAGRAM - PANEL, POWER SUPPLY Section -
SYSTEM CONTROLLER
IC501 (4/4)
8CLK
9STB
7
32
DIN
ND800
FLUORESCENT
INDICATOR
TUBE
GR1 - GR10
SG1 - SG16
42 - 33 14 - 29
GR11
5 FL_DOUT
7 FL_CLK
3 FL_CS
GRID DRIVE
Q804
FLUORESCENT
INDICATOR
TUBE DRIVER
IC802
SIRCS_IN
REMOTE
CONTROL
RECEIVER
IC803
4
KEY_INT
KEY2
19
POWER CONTROL
IC921
D902
DZ903
D908
D906, 907
+32.5V
(AC IN)
F901
EN. P
LINE
FILTER
LF901, 902
RECT
D901
TH901
1D
6BD
3 Vcc/DVP
5FB/CLP
POWER CONTROL
IC901
3D
5FB/OLP
1 OCP/SYNC
4VCC
D508D506
RIPPLE FILTER
Q922
ISOLATOR
PC902
ISOLATOR
PC901
ISOLATOR
PC903
B+ SWICH
Q901
T903
SUB POWER
TRANSFORMER
T901
MAIN POWER
TRANSFORMER
D910
RECT
D931
MAIN POWER
ON/OFF SWITCH
Q943
MAIN POWER
ON/OFF SWITCH
Q949, 950
SHUNT
REGULATOR
IC932
SHUNT
REGULATOR
IC923
RECT
D943
KEY0 - KEY2
T800
DC/DC CONVERTER
TRANSFORMER
D803, 804
RECT
VEE
OSC
Q803
E +4V
RECT
D942
E +6V
E -9V
RECT
D954
E +14V
H
12RESET
20AC_CUT
RESET
SWITCH
Q504
RESET
SIGNAL
GENERATOR
IC503
VOLTAGE
DETECTOR
IC507
VOLTAGE
DETECTOR
IC506
X500
6MHz
Xout
Xin
13
15
LED_PWM28
D800
(ILLUMINATION)
LED DRIVE
Q801
S700 - 705, 750
KEY0
97, 95, 94
3
16
10
VOLTAGE
DETECT
Q969
RECT
D955
(Page 31)