Read Sony CDX-S2250V Service Manual online
15
15
CDX-S2250V
CDX-S2250V
KEY ACK ON
Q664
X502
32.678kHz
79
80
82
83
41
28
29
27
40
52
76
77
SYSTEM CONTROL
IC501 (3/3)
LCD DRIVER
IC901
KEYIN0
CLK
CE
LCD SO
LCD CKO
LCD CE
DIMMER
KEYIN1
KEY ACK
XKEY ON
7 NOSE DET
88 SYS RST
RESET
2
1
XIN
XOUT
OSC IN
OSC OUT
X501
18.432MHz
S702
RESET
63
64
62
1
COM4
COM1
LCD901
LIQUID
CRYSTAL
DISPLAY
PANEL
D510
4
|
50
•
55
51
|
54
|
S1
S48
|
CL
DI
CE
64
SIRCS
IR
LED951,952
LSW901-921
Q921
LED
CONTROL
LED931,932
PANEL+B
IR RECEIVER
IC971
2 OUT
BU+3.3V
SYS RST
(
)
KEY MATRIX
RESET
IC602
LSW901-921
VDD VOUT
LCD BACK
LIGHT
CD
SECTION
C
71
43
RC IN1
RC IN0
RC IN0
D501 (1/2)
D501 (2/2)
J561
(REMOTE IN)
3-3. BLOCK DIAGRAM — DISPLAY SECTION —
• Circuit Boards Location
MAIN board
KEY board
SENSOR board
SERVO board
tuner unit
(TU1)
(TU1)
(Page 13)
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