25
25
HCD-DX2D
HCD-DX2D
7-4. BLOCK DIAGRAM — PANEL/POWER SECTION —
IR651
D652
X501
32.768kHz
X502
8.38MHz
VFD651
FLUORESCENT
INDICATOR
TUBE
IC651
FL DRIVER
FUNCTION
KEY
S667,S651-654
I/
LED
DRIVE
Q502
IC502
D302
PT901
POWER
TRANSFORMER(MAIN)
D901-904
RELAY
DRIVE
AC IN
D301
Q305,Q320
POWER
CONTROL
D324
INH
MUTE
D309
POWER AMP B+
-33V(VPP)
POWER AMP B-
PT902
(SUB)
TRANSFORMER
D +5V
+12V(VM)
+9V
IC301
+12V
REG
Q311,312
+9V
REG
Q316
D306
VF
VF
Q307
VOLTAGE
SELECTOR
SW901
RY901
D907
D906
TOP
TCL
POWER
-33V
REG
Q315
Q318
SWITCH
+10V
REG
Q313
+VDD
IC501 (3/3)
SYSTEM CONTROLLER
-33V(VPP)
VF
VF
+5V
+5V
+12V(VM)
REG
Q504-506
VOLUME
VR601
FUNCTION
KEY
S665,S666,S656,S659
FUNCTION
KEY
S655,S660-664
CLS
OPN
DSCK
DSSTB
DSDA
MRST
SWITCH
Q507
D501
D503
VDP
VDP
Q306
SWITCH
Q309,310
SWITCH
+9V
REG
Q196,197
SWITCH
Q198
+9V (TU)
D319 - D321
IC101
+6V
LF901
US,CND,AEP,
UK,RU,AUS,KR
TH
E3,E51,SP
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
8
0
5
1
5
1
7
3
Q
Q
TEL 13942296513 QQ 376315150 892498299
TEL 13942296513 QQ 376315150 892498299