Block Diagram - Main Section (2/2) - Sony Walkman D-EJ955 Service Manual

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3 7 6 3 1 5 1 5 0
5-2. BLOCK DIAGRAM – MAIN Section (2/2) –
DOUT
(Page 10) D
AOUTL
AOUTR
E
(Page 10)
HPL
HPR
F
(Page 10)
LRMU
G
(Page 10)
T E
L 1 3 9 4 2 2 9 6 5 1 3
XRST
H
(Page 10)
6
w w w
.
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MUTING
Q303
HEADPHONE AMP
IC301
IN_L
13
IN_R
12
LINE MUTING
CONTROL SWITCH
Q302
MUTE_SW
17 MUTE SW
PW_SW
18 PW SW
BEEP
15
SL807
(TEST)
24 79 30
SYSTEM CONTROLLER
IC801(2/3)
S802
AVLS
LIMIT
NORM
x a o
y
i
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8
B+ SWITCH
VCC3
Q301
OUT_L
4
OUT_R
9
BEEPO_L
3
BEEPO_R
10
Q Q
3 7 6 3 VCPU B+ 1
BEEP
S805-809
25 31 26
39 38
S803
VCPU B+ VCPU B+
G•PROTECTION
2
1
u 1 6 3
.
11 11
2 4
9 9 8
J301
OPTICAL
TRANSCEIVER
LINE OUT
(OPTICAL)
(LINE OUT JACK)
J302
i
5 1 5 0 8 9 2 4 9
VCPU 2V
4
3 TSB
2 RMKEY
1 GND
• SIGNAL PATH
: CD PLAY (ANALOG OUT)
: CD PLAY (OPTICAL OUT)
m
c o
D-EJ955
2
9 9
8 2 9 9