17
17
CDX-CA720X
3-4. BLOCK DIAGRAM — DISPLAY SECTION —
3-5. CIRCUIT BOARDS LOCATION
LSW902,904,905,907,
911,913,915,916,918,919
S901,903,912,914,917
KEY
ACTIVE
Q551
DOOR IND
SWITCH
Q631
J561
(REMOTE IN)
IC971
X502
32.768kHz
SYSTEM CONTROL
IC501 (3/3)
LCD DRIVE
IC901
X501
18.432MHz
LCD
LCD901
LCD
BACK LIGHT
SWITCH
Q904
ILL+5V
LSW902,904,905,907,
911,913,915,916,918,919
LED901,903,912,914,917
D701
LSW801(1/2)
D702
D553
KEY
ILLUMINATION
(
)
ILL+5V
LED932-934,942-944
(LCD BACK LIGHT)
ROTARY
ENCODER
RE901
Z
S552
(NOSE)
LED801
(CD WINDOW)
LSW801(2/2)
Z
KEY MATRIX
MAIN board
LIMIT board
SUB board
DISC IN board
SUB (CD) board
KEY board
SERVO board
tuner unit
(TU10)
—
Main Board
—
• Waveforms
— Servo Board —
(MODE: CD PLAY)