Block Diagram - Main Section - Sony HCD-EC69i Service Manual

Q Q
3 7 6 3 1 5 1 5 0
6-2.

BLOCK DIAGRAM - MAIN Section -

R-ch is omitted due to same as L-ch.
SIGNAL PATH
: TUNER (FM/AM)
: CD PLAY
: iPod
: PC IN
J491 R-CH
PC IN
(EC79i/EC99i)
A
CD-L
(Page 24)
B
TUNER-L
(Page 24)
CN902
(iPod Dock)
LINE AMP
LINE-OUT-L
27
IC770
LINE-OUT-R
28 R-CH
RXD 18
TXD
19
DGND T E
30 L 1 3 9 4 2 2 9 6 5 1 3
45 29 31
SYSTEM CONTROLLER
IC301 (2/3)
w w w
HCD-EC69i/EC79i/EC99i
POWER
POWER
ELECTRICAL VOLUME,
INPUT SELECTOR,
IC602
POWER
8 AUDIO-L OUT-L 19
6 CD-L VOL-L 12
POWER
4 TUNER-L SEL-L 9
2 iPod-L
26 25
STANDBY
SWITCH
Q608
33 34
O-SP-RELAY-ON/TC ON/SW ON 2
x a o
y
. i
http://www.xiaoyu163.com
(EC69i)
AMP
IC102
(EC79i)
AMP
IC101
R-CH
(EC99i)
AMP
IC103
R-CH
SUBWOOFER
+
BAND-PASS FILTER
Q701 - 703, 804
AMP
IC201
R-CH R-CH R-CH
(EC79i)
Q Q
OVER LOAD OVER LOAD OVER LOAD OVER LOAD
3 7 6
DETECT DETECT DETECT DETECT
Q141, 142 Q201, 202 Q203 Q151, 152
D203
D140
RELAY DRIVE
PROTECT
DETECT
Q611, 612
u 1 6 3
25 25
2 4
8 9 9
J492
PHONES
RY602
RY601
3 1 5 1 5 0 8 9
RY701
RELAY DRIVE
Q704, 705
(EC69i/EC79i)
RELAY DRIVE
Q604
SUBWOOFER
SWITCH
Q614
Q610, 613
SP-L
RELAY PROTECT
OVER LOAD DETECT
O-POWER
m
c o
.
HCD-EC69i/EC79i/EC99i
2
8 9 9
TB602 (EC69i)
+ SPEAKER
IMPEDANCE
L
–
USE 6Ω
+
R-CH
SPEAKER
R
LOW FREQ.
–
IMPEDANCE
USE 8Ω
TB601
+
L
SPEAKER
–
HIGH FREQ.
IMPEDANCE
+
R-CH
USE 8Ω
R
–
(EC79i/EC99i)
(EC99i)
2 4 9 8 2 9 9
TB603
+
SUBWOOFER
IMPEDANCE
–
USE 4Ω
C
(Page 26)