Block Diagram - Main Section - Sony HCD-EC69 Service Manual

6-2.

BLOCK DIAGRAM - MAIN Section -

R-ch is omitted due to same as L-ch.
SIGNAL PATH
: TUNER (FM/AM)
: CD PLAY
: USB
: PC IN
J491
R-CH
PC IN
A
(Page 20) CD-L
B
(Page 20) TUNER-L
CN104 USB CONTROLLER
(USB)
IC101
34 USB_DP LDACO 46
3
2 33 USB_DM RDACO 44 R-CH
41 XOUT_PLL
X101
16.9344MHz
40 XIN_PLL
13 12 11 1
49 50 29 31
SYSTEM CONTROLLER
HCD-EC69/EC79/EC99
ELECTRICAL VOLUME,
INPUT SELECTOR,
IC602
8 AUDIO-L OUT-L 19
6 CD-L
VOL-L 12
4 TUNER-L SEL-L 9
2 USB-L
26 25
STANDBY
SWITCH
Q608
33 34
IC301 (2/3)
O-SP-RELAY-ON/TC ON/SW ON
2
(EC79)
POWER
AMP
IC101
R-CH
(EC69/EC99)
POWER
AMP
IC102
(EC99)
R-CH
SUBWOOFER
+
BAND-PASS FILTER
Q701 - 703, 804
POWER
AMP
IC201
(EC79)
R-CH R-CH R-CH
OVER LOAD OVER LOAD OVER LOAD OVER LOAD
DETECT DETECT DETECT DETECT
Q141, 142 Q201, 202 Q203 Q151, 152
D203
D140
21 21
J492
PHONES
RY602
RY601
RELAY DRIVE
(EC69/EC79)
RELAY DRIVE
Q604
SUBWOOFER
RELAY DRIVE
Q610, 613
RELAY PROTECT
PROTECT
DETECT OVER LOAD DETECT
Q611, 612
O-POWER
HCD-EC69/EC79/EC99
TB602 (EC69)
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
–
(EC79/EC99)
(EC99)
TB603
RY701
+
SUBWOOFER
IMPEDANCE
–
USE 4Ω
Q704, 705
SWITCH
Q614
SP-L
C
(Page 22)