Sony Cd Walkman D-E880 Service Manual page 4

D-E880/EJ815
5-2. BLOCK DIAGRAM – MAIN Section (2/2) –
DOUT
I
(Page 10)
LOUT2
LOUT1
(Page 10) J
XRST
(Page 10) K
AMUTE
(Page 10)
L
78 31 32 30 34 33
R4M
(Page 10) M
D415
RSTB
H
(Page 13)
05
MUTING
Q301
HEADPHONE ON/OFF SWITCH
IC302
1 2
7
6 5
3
LINE MUTE
CONTROL SWITCH
Q302
D601
TAP802
(TEST)
47 76 14 7 9 28
SYSTEM CONTROLLER
IC801(2/3)
COMMUNICATION FORMAT CONVERTER
IC802
RW
18
XLT
17
SCK
16 REMOTE
SO MICRO COMPUTER TSB
CONTROL
15
INTERFACE
1SI
INTERFACE
14
MCLK
10
RST
11
– 11 –
B+ SWITCH
VCC +3V
HEADPHONE AMP
IC351
IN_R OUT_R
14 8
IN_L OUT_L
15 6
MT_SW
19 MT SW
PW_SW
20 PW SW
SWITCH UNIT
(1/2)
BEEP
17 BEEP
S809
VCPU 2V
–
S803
AVLS
OFF
ON
38 18 16
77 50 – 64 65 – 68
LCD BACK LIGHT
EL
DRIVE
DRIVE
LIQUID CRYSTAL
Q801
DISPLAY
SWITCH UNIT
(2/2)
19
Q601
J301
OPTICAL
TRANSCEIVER
LINE OUT
(OPTICAL)
(LINE OUT JACK)
J302
i
/ REMOTE
VCPU 2V
VCPU 2V
4
3 TSB
2 RMKEY
S810 1 GND
+
VOLUME
19
• SIGNAL PATH
: CD PLAY (ANALOG OUT)
: CD PLAY (OPTICAL OUT)
– 12 –