17
17
CDX-L490EE
3-4. BLOCK DIAGRAM — DISPLAY SECTION —
3-5. CIRCUIT BOARDS LOCATION
LSW904,905,
LSW907-911,
LSW913-921
S900-903,906,912
KEY
ACTIVE
Q664
IC971
X502
32.768kHz
SYSTEM CONTROL
IC501 (3/3)
LCD DRIVER
IC901
X501
18.432MHz
LCD
LCD901
PANEL+B
PANEL+B
LSW904,905,907-911,
913-921
LED900-903,906,912,
951,952
LED931,932
(LCD BACK LIGHT)
D502
D501
B.UP+B
KEY
ILLUMINATION
(
)
KEY MATRIX
2
I
MAIN board
SERVO board
LIMIT board
SUB (CD) board
tuner unit
(TU1)
DISC IN board
KEY board
LOAD board
— Main Board —
• Waveforms
— Servo Board —
(MODE: CD PLAY)
w w w . x i a o y u 1 6 3 . c o m
Q Q 3 7 6 3 1 5 1 5 0
9
9
2
8
9
4
2
9
8
T E L
1 3 9 4 2 2 9 6 5 1 3
9
9
2
8
9
4
2
9
8
0
5
1
5
1
3
6
7
3
Q
Q
TEL 13942296513 QQ 376315150 892498299
TEL 13942296513 QQ 376315150 892498299