Read Sony CDX-S22 / CDX-S22S Service Manual online
17
17
CDX-S22/S22S
CDX-S22/S22S
3-3. BLOCK DIAGRAM — KEY SECTION —
3-4. CIRCUIT BOARDS LOCATION
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)
IC971 (EXCEPT AEP,UK)
IC901 (AEP,UK)
IC901 (EXCEPT AEP,UK)
IC901 (EXCEPT AEP,UK)
MAIN board
KEY board
SENSOR board
SERVO board
tuner unit
(TU1)
(TU1)
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