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HCD-BX70DBi
6-4.
BLOCK DIAGRAM - PANEL, POWER SUPPLY Section -
FL901
FLUORESCENT
INDICATOR TUBE
GRID DRIVE
Q905
59, 60
32
1 – 31, 61 – 64
33 – 42
AD2, AD1
SG5 – SG35,
GR1
GR2 – GR11
SG1 – SG4
FLUORESCENT
INDICATOR TUBE DRIVER
IC902
LED DRIVE
D902
STANDBY
REMOTE CONTROL
RECEIVER
IC901
S801, 803 – 807,
S809 – 821
(FRONT PANEL KEYS)
HCD-BX70DBi
T801
DC/DC
CONVERTER
+9V
RECT
VFL
D904, 905
OSC
Q903
I-POWER MONITOR
66
RSTB
52
90
FL RESET
CSB
53
91
FL CS
CLKB
54
93
FL SCLK
DIN
55
92
FL SD
SYSTEM CONTROLLER
IC301 (4/4)
STANDBY LED
89
CD ON
57
Q901
SIRCS
4
KEY1 – KEY3
DAB-POWER 1.2V
51
D774
KEY WAKE UP
74
52
DAB-POWER 3.3V
DMPORT POWER
80
X5V FLAG
94
15
XIN
X302
5MHz
13
XOUT
10
INOUT
X301
32.768kHz
11
XCOUT
AC CUT
20
RESET
RESET
12
SWITCH
Q309
STBY-RELAY
5
PROTECT
DETECT
Q333, 338
UNREG SUB
+1.5V
CD +1.5V
REGULATOR
IC201
+3.3V
DVDD +3.3V
REGULATOR
Q302, 303,
AVDD +3.3V
Q390, 392
VM +7V
D318, 321
+9V
TUNER, DAB +9V
REGULATOR
IC307
+9V
+1.2V
DAB +1.2V
REGULATOR
IC802
+3.3V
DAB +3.3V
REGULATOR
IC801
+3.3V
IP +3.3V
REGULATOR
IC102
VBUS POWER
VBUS +5V
ON/OFF SWITCH
IC201
D303
EVER +3.3V
B+ SWITCH
SYS +3.3V
Q312, 313
UNREG SUB
RESET SIGNAL
AC DETECT
GENERATOR
Q301
IC310
20
20
T901
MAIN POWER
TRANSFORMER
D920
PROTECT
D332
D322
VOLTAGE
DETECT
+9V +4V
Q393
+9V
F901
RECT
REGULATOR
D911 – 914
IC305
D804, 805
+5V
F902
RECT
REGULATOR
D924 – 927
IC306
AMP B+
TO
RECT
POWER AMP
D916 – 919
AMP B–
D330
REGULATOR
Q304 - 306
T902
SUB POWER
TRANSFORMER
RECT
D907, 908
D922
D923
RELAY
DRIVE
Q315
PROTECT
J
(Page 19)
AC DET
K
(Page 19)
(AC IN)
LF901
LINE
FILTER
RY901
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