D-E880/EJ815
– 11 –
– 12 –
5-2.
BLOCK DIAGRAM – MAIN Section (2/2) –
47
76
14
7
9
28
38
19
18
B+ SWITCH
Q601
LCD BACK LIGHT
DRIVE
Q801
EL
DRIVE
LIQUID CRYSTAL
DISPLAY
LINE MUTE
CONTROL SWITCH
Q302
XDOUTON
XHPSW
SEL
AMUTE
XRST
BEEP
77
XLIGHT
A
VLS
RMKEY
KEY
SYSTEM CONTROLLER
IC801(2/3)
D601
VCC +3V
(LINE OUT JACK)
J301
LINE OUT
(OPTICAL)
OPTICAL
TRANSCEIVER
VCPU 2V
TSB
RMKEY
GND
J302
i
/ REMOTE
SWITCH UNIT
(1/2)
SWITCH UNIT
(2/2)
16
VCDKEY
4
3
2
1
VCPU 2V
OFF
ON
S803
AVLS
VCPU 2V
IN_R
IN_L
HEADPHONE AMP
IC351
14
HEADPHONE ON/OFF SWITCH
IC302
1
7
2
15
OUT_R
OUT_L
8
6
PW_SW
MT_SW
19
BEEP
17
PW SW
BEEP
MT SW
20
6
3
5
TAP802
(TEST)
LOUT2
LOUT1
I
J
L
K
VOLUME
+
–
S810
S809
50 – 64
SEG14
ı
SEG0
COM3
ı
COM0
65 – 68
31
RMDA
TI
32
RMDA
TO
30
RMSCK
34
RMLA
T
33
RMRW
78
MICRO COMPUTER
INTERFACE
REMOTE
CONTROL
INTERFACE
18
RW
17
XLT
16
SCK
15
19
SO
TSB
14
1SI
10
MCLK
11
05
COMMUNICATION FORMAT CONVERTER
IC802
M
H
RSTB
D415
(Page 10)
DOUT
(Page 10)
(Page 10)
AMUTE
(Page 10)
XRST
(Page 10)
(Page 13)
R4M
RST
RESET
• SIGNAL PATH
: CD PLAY (ANALOG OUT)
: CD PLAY (OPTICAL OUT)
MUTING
Q301
