21
21
CDX-L250/L430X
4-4. BLOCK DIAGRAM — DISPLA
4-5. CIRCUIT BOARDS LOCA
TION
KEY MATRIX
S501-511,
S512-521
ACTIVE
X802
32.768kHz
37
38
40
41
ILL POWER
CONTROLLER
Q914
INITIAL
RESET
D552
SWITCH
Q915
ILL + B
KEY 1
KEY 0
XT2
XT1
X2
48
ILL ON
BATT
X1
X801
8.38MHz
PL551,552
D561-581
LCD BACK
LIGHT
LCD
LCD501
D914
()
KEY
ILLUMINATION
()
64
•
63
1
|
23
•
25
|
53
•
|
ILL+B
MAIN board
tuner unit
(TU601)
DISPLAY board
SERVO board
IN SELF SW board
SPEAKER board
SL SW board
• W
aveforms
— Servo Board —
(MODE: CD PLA
Y)
1
2
3
IC1
ts
(P
ACK)
IC1
uj
(RFO)
1.2Vp-p
4
Approx. 1Vp-p
IC1
oa
(FEO)
0V
5
Approx. 400mVp-p
IC1
od
(TEO)
4.4Vp-p
16.9344MHz
IC1
wd
(XT
AL)
3Vp-p
0V
22.7µsec
—
Main Board
—
1
2
32.768kHz
IC801
ej
(XT2)
3.8Vp-p
5Vp-p
8.38MHz
IC801
r;
(X2)
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TEL 13942296513 QQ 376315150 892498299
