15
15
CDX-GT250M
CDX-GT250M
3-3. BLOCK DIAGRAM — DISPLAY SECTION —
KEY ACKNOWLEDGE
SWITCH
Q664
X502
32.678kHz
SYSTEM CONTROL
IC501 (3/3)
LCD DRIVER
IC901
X501
18.432MHz
S702
RESET
LCD901
LIQUID
CRYSTAL
DISPLAY
PANEL
D503
D510
IR
LED904,906–908,
911–919,941–944,951
LSW901–903,909,910,920
LCD BACK LIGHT
LED DRIVE
Q932
LED932
PANEL+B
REMOTE CONTROL
SIGNAL REVEIVER
IC971
BU+3.3V
SYS RST
(
)
KEY MATRIX
RESET
IC602
LSW901–903,909,910,920
S904,906–908,911–919
(VOLUME)
PUSH DIAL SELECT
RE901
ROTARY
ENCODER
LCD BACK
LIGHT
S502
FREQUENCY
SELECTOR
(
)
BU+3.3V
10K
9K
DIMMER
LED DRIVE
Q931
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