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32
HCD-EA20
– AMP SECTION –
• SIGNAL PATH
: AUDIO
HP-MUTE
HP-SW
J851
J301
(+)
(–)
Q505
MUTING
CONTROL
FRONT
L
(+)
(–)
FRONT
R
(+)
(–)
IC501 (2/3)
SYSTEM CONTROLLER
IC401
POWER AMP
IC802
FL DRIVER
(+)
(–)
(+)
(–)
SURR
L
(+)
(–)
Q401
STANDBY
CONTROL
SURR
R
CENTER
SPEAKER
WOOFER
PHONES
FL801
FLUORESCENT
INDICATOR TUBE
Q881 - 882
MUTING
FL, FR, SL, SR, C, SW
HP-SW
HP-MUTE
I2CDATA,
I2CCLK
SYS RESET, MUTE REQ
KEY0
S811 – 814,
S821 – 823,
S831
I2CCLK
I2CDATA
SYS RESET
MUTE REQ
X501
5MHz
D812
STANDBY
RELAY
DRIVER
Q462, 463
RELAY
DRIVER
Q381, 382
RELAY
DRIVER
Q383
RELAY
DRIVER
Q331, 332
IC301
POWER AMP
RY461
RY381
RY331
RY382
PROTECT
SWITCH
Q473, 474, 477
OVERLOAD
DETECT
Q411, 461
OVERLOAD
DETECT
Q322, 372
OVERLOAD
DETECT
Q321, 371
OVERLOAD
DETECT
Q323
THP471
RELAY
DRIVER
Q476
DC DETECT
Q478, 479
TEMP
DETECT
Q472
Q424 - 426
FAN CONTROL
FAN
FL
FR
C
SL
SR
SW
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
3
6
7
3
TEL 13942296513 QQ 376315150 892498299
TEL 13942296513 QQ 376315150 892498299