17
17
CDX-S22/S22S
CDX-S22/S22S
3-3.
BLOCK DIAGRAM — KEY
SECTION —
3-4.
CIRCUIT BOARDS LOCA
TION
KEY ACK
ENEABLE
Q664
82
83
41
28
29
27
40
52
76
LCD
DRIVE
KEYIN0
CLK
CE
LED_SO
LCD_CKO
LCD_CE
KEYIN1
KEYACK
XKEYON
3
AREASEL0
NOSE_SW
OSCIN
OSCOUT
X501
18.432MHz
63
64
62
1
COM1
I
COM4
LCD901
LIQUID
CRYSTAL
DISPLAY
PANEL
LED932
LCD
BACK LIGHT
D503
S502
FREQUENCY
SELECT
10K
9K
BU+3.3V
E,Chinese,Mexican MODEL
4
I
50
•
55
54
I
51
S1
I
S48
CL
DI
CE
DISP+B
LSW904,906,910,911
LED901-903,905,907-909,913-921,941,942,951,952
LED912 (AEP,UK)
(KEY ILLUMINATE)
()
KEY MATRIX
LSW904,906,910,911
S901-903,905,907-909,913-921
S912 (AEP,UK)
SYSTEM CONTROL
IC501 (3/3)
79
80
XIN
XCOUT
X502
32.768kHz
LED
DRIVER
Q921
7
DIMMER
2
OUT
REMOTE CONTROL
SIGNAL RECIVER
64
SIRCS
IR
IC971 (AEP,UK)
IC971 (EXCEPT AEP,UK)
IC901 (AEP,UK)
IC901 (EXCEPT AEP,UK)
MAIN board
KEY board
SENSOR board
SER
V
O
board
tuner uni
t
(TU1)