Block Diagram -Front Section; Circuit Boards Location - Aiwa CDC-Z137 Service Manual

3-4. BLOCK DIAGRAM — FRONT SECTION —
LCD DRIVER
IC601
RESET
S619
(RESET)
LCD DI
64 DI
LCD CLO 63
CL
LCD CE
62 CE
B
LCD DO 61 DO
MAIN
SECTION
(Page 20)
S621
RE1
ROTARY
ENCODER
WITH
RE2
SWITCH
S601,602,605,606
608,610-618 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
S3 3
DIMMER ILL
CONTROL CONTROL
+9V
Q661 Q671
LED661 LED671,672 LED651-653
LCD
BACK LIGHT
21

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)
21
CDC-Z137
SERVO board
tuner unit
(TU101)
MAIN board
AUX board
Main Board
— —
1
1.8Vp-p
4.5MHz
IC901 1 (XIN)