15
15
CDX-S2270EE
CDX-S2270EE
3-3. BLOCK DIAGRAM — KEY SECTION —
3-4. CIRCUIT BOARDS LOCATION
MAIN board
KEY board
SENSOR board
SERVO board
tuner unit
(TU1)
(Page 13)
KEY ACKNOWLEDGE
SWITCH
Q664
X502
32.678kHz
79
80
82
83
41
28
29
27
40
52
76
77
SYSTEM CONTROL
IC501 (3/3)
LCD DRIVE
IC901
KEYIN0
CLK
CE
LCD_SO
LCD_CKO
LCD_CE
DIMMER
KEYIN1
KEYACK
XKEYON
7 NOSE_DET
88 SYS RST
RESET
2
1
XIN
XOUT
OSCOUT
OSCIN
X501
18.432MHz
S702
RESET
63
64
62
1
COM4
COM1
LCD901
LIQUID
CRYSTAL
DISPLAY
PANEL
D503
D510
4
|
50
•
55
51
|
54
|
S1
S48
|
CL
DI
CE
64
SIRCS
IR
LED901-905,
LED907-909,
LED913-921,
LED941,942,
LED951,952,
LSW904,906,
LSW910,911
Q921
LED
CONTROL
LED932
PANEL+B
IR RECEIVER
IC971
2 OUT
BU+3.3V
SYS RST
(
)
KEY MATRIX
RESET
IC602
LSW904,906,910,911,
S901-903,905,
907-909,
S913-921
VDD VOUT
LCD BACK
LIGHT
CD
SECTION
C
Summary of Contents for CDX-S2270EE
Page 6: ...6 CDX S2270EE ...