27
27
HCD-GX45/RG440
5-4. BLOCK DIAGRAM — AMP/POWER SUPPLY SECTION —
JK002
R-CH
PHONES
+
–
–
+
R
L
SPEAKER
JK502
R-CH
R-CH
–VL
–VP
+VP
–VH
OVER LOAD
DETECT
Q505
OUTPUT LEVEL
DETECT
Q23, 24
BIAS
Q507, 509
HOLD
Q7 – 9
DC DETECT
Q5,6
THERMAL DETECT
Q10, 11
+
FINAL DRIVE
Q501, 503
SWITCHING
Q17, 19, 22
SWITCHING
Q18
R-CH
R-CH
+
+
+
TH501,
502
+
R-CH
R-CH
CASCADE
Q511, 513, 515
PRE DRIVE
Q517, 519
MUTING
Q525
+
CURRENT
MIRROR
Q521, 523
R-CH
+
+VL
+VH
OUTPUT LEVEL
DETECT
Q20, 21
R-CH
+
MUTE
Q321
INPUT SELECT SWITCH, TONE CONTROL,
ELECTRICAL VOLUME, BASS BOOST AMP
IC301
BASS BOOST CONTROLLER
IC310
19
SAOUT
VACS/STR
29
TOUT2
25
OUT2
24
SWOUT
3
DATA
4
CLOCK
LCK
S-MUTE
O-POWER
HOLD
CLK
SO
5
LCK
40 CD-L
39 TUNER-L
38 TAPE-L
28 VOLIN2
–30V
REGULATOR
Q534 – 536
(AC IN)
SUB POWER
TRANSFORMER
T902
MAIN POWER
TRANSFORMER
T901
RECT
D2
+VL
TO
POWER AMP
BLOCK
–VL
VL
VL
VF1
TO
FLUORESCENT
INDICATOR TUBE
VF2
RECT
D3-6
+VH
–VH
–VFL
EVER+10V
VH
VH
RECT
D902 – 905
+4V
REGULATOR
IC602
+3.3V (SUB)
DI
SO
CLK
MCLK
LCK
MECHA VCC
SOL-A
SOL-B
RESET
POWER DOWN
D617
RESET SIGNAL
GENERATOR
IC603
CD-L
A
TUNER-L
TAPE-L
REC-L
J
G
K
C
21
DATA
22
CLOCK
35 RECB-2
36 GAME-L
S-MUTE, O-POWER, HOLD
B
: MIC INPUT
9
MOTOR VCC
10
SOL-A
11
SOL-B
MECHA VCC
SOL-A
SOL-B
H
HP
F
RY902
RESET SWITCH
Q601
R-CH
FRONT SPEAKER
ON/OFF RELAY DRIVE
Q304
MUTING CONTROL
SWITCH
Q527
POWER OFF
MUTING DRIVER
Q529, 530
D513
VM+10V
FAN MOTOR
ON/OFF SWITCH
Q371,373
RY501
M731
(FAN)
M
SP-F
S-MUTE
O-POWER
HOLD
DC DET
HOLD
: TAPE PLAY
: REC
: CD PLAY
: TUNER (FM/AM)
SIGNAL PATH
: MD (VIDEO) IN
R-ch is omitted due to same as L-ch.
R-CH
JK001
JK004
L
R
VIDEO
AUDIO
VIDEO
OUT
GAME
INPUT
BUFFER
IC304
CENTER VOLATAGE
GENERATOR
Q324
VM+10V
TUNER/TAPE/PANEL
SECTION
TUNER/TAPE/PANEL
SECTION
TUNER/TAPE/PANEL
SECTION
CD
SECTION
TUNER/TAPE/PANEL
SECTION
TUNER/TAPE/PANEL
SECTION
CD
SECTION
MCLK
DI
+4V
HOLD
Q12
OVER CURRENT
DETECT
Q13
O-POWER
VM+9V
VM+10V
RECT
D319 – 322
RECT
D301 – 304
DC DET
Q329
VM
VM
VCC
DECK+9V, M+9V
+10V
REGULATOR
IC313
+9V
REGULATOR
IC308
D102
P+7V
D313 – 315
+9V
REGULATOR
IC305
+4V
REGULATOR
IC306
B+ SWITCH
Q301, 302
RELAY B+
+9V
+1.8V
(MP3)
+3.3V (MAIN)
+1.8V
REGULATOR
IC803
POWER ON/OFF
RELAY DRIVE
Q330, 331
TUNER/
TAPE/
PANEL
SECTION
CD
SECTION
SW MUTE
SW IN
M
SUBWOOFER
SECTION
E
N
SUBWOOFER
SECTION
VACS/STR
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(Page 25)
(Page 26)
(Page 26)
(Page 25)
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