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3-4. BLOCK DIAGRAM — FRONT SECTION —
LCD DRIVER
IC601
CDC-X437
REMOTE
CONTROL
REMOTE
RECEIVER
IC681
LCD DI
64
DI
LCD CLO
63
CL
LCD CE
62
CE
B
LCD DO
61
DO
DFP IN
MAIN
SECTION
(Page 18)
S621
RE1
ROTARY
ENCODER
WITH
RE2
SWITCH
S601,602,605,606
608,610-619
44
KS1
I
I
49
KS6
KEY
MATRIX
50
KI1
I
I
52
KI3
5
S5
I
I
LCD601
S35
35
LIQUID
•
CRYSTAL
COM1
41
DISPLAY
I
I
COM3
43
S1
1
S2
2
S3
3
DIMMER
ILL
CONTROL
CONTROL
LAMP+B
Q661
Q651,671
D661
D651-653
D641-643
LCD
671-673
BACK LIGHT
19
3-5. CIRCUIT BOARDS LOCATION
SUB board
KEY board
• Waveforms
— Servo Board —
(MODE: CD PLAY)
1
0V
Approx. 600mVp-p
(TE)
IC201
7
2
0.9Vp-p
IC201
ra
(RFSM)
3
4.4Vp-p
4.2336MHz
IC201
t;
(CLK)
4
1.2Vp-p
16.9344MHz
IC202
rg
(XIN)
19
CDC-X237/X437
SERVO board
tuner unit
(TU101)
MAIN board
AUX board
Main Board
—
—
1
1.8Vp-p
4.5MHz
IC901
1
(XIN)
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