FUNAI A8C72EP, Руководство по обслуживанию

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7-1
System Control Block Diagram
A8C72BLS
BLOCK DIAGRAMS
LED1
KEY SWITCH
IC4700 (SUB MICR
O CONTR
OLLER)
IC4513 (MAIN MICR
O CONTR
OLLER)
3
XOUT
XIN
X3101
4MHz OSC
DIGIT
AL MAIN CB
A UNIT
IR SENSOR CB
A
FUNCTION CB
A
MAIN CB
A
CN301
REMO
TE
SENSOR
RS301
+3.3V
D302 PO
WER
ST
ANDBY
D303
LED1
44
CN202
REMO
TE
22
P-ON-H1
55
CN104A
CN3601
REMO
TE
22
4
10 12 11
PR
O
TECT3
BA
CKLIGHT
-ADJ
BA
CKLIGHT
-SW
CN105A
REMO
TE
11 12
RXD
15
6 8
CLK
OUT
CLKIN
X3301
25MHz OSC
U25 U26
P-ON-H1
TO INVER
TER
BLOCK DIA
GRAM
(CL404)
BA
CKLIGHT
-ADJ
AC
24
BA
CKLIGHT
-SW
A2
TXD1
P22
T
O
DIGIT
AL
SIGNAL PR
OCESS
BLOCK DIA
GRAM
T
O
PO
WER
SUPPL
Y
BLOCK DIA
GRAM
PR
O
TECT1
22
P-ON-H1
14
P-ON-H2
13
P-ON-H2
P-ON-H1
12
5
TXD
16
RXD1
N22
AMP-MUTE-SUB
18
REMO
TE
R22
RESET
-MAIN
5
RESET
-MAIN
T
O
A
UDIO-2
BLOCK DIA
GRAM
V24
LED1
44 REMO
TE
22
P-ON-H1
55
CN201
KEY
-IN1
66
CN106
LED1
18
8
CN101A
P-ON-H2
13
13
CN3701
KEY
-IN1
25
1
KEY
-IN1
24
VCOM-PWM
21
VCOM-PWM
AA2
AMP-MUTE-MAIN
AMP-MUTE
SCL
SD
A
19 20
IC3102
(MEMOR
Y)
5 6
SD
A
SCL
PR
O
TECT2
RESET
23
PR
O
TECT1
21
5
CN101A
CN3701
PR
O
TECT2
20
6
RESET
17
9
4
PR
O
TECT3
PR
O
TECT3
19
7
IC3706
(MEMOR
Y)
SPI-CLK SPI-DO SPI-DI SPI-CS
SCK
SI
SO CS
Y25 Y24
W25 W24
6 5 2 1
AF12 AE12
SCL SD
A
T
O
A
UDIO-1
BLOCK DIA
GRAM
SCL SD
A
NICAM-RESET
B11
NICAM-RESET
SCAR
T
-MUTE
B2
SCAR
T
-MUTE
SCL SD
A
T
O
VIDEO
BLOCK DIA
GRAM
T
O
VIDEO
BLOCK DIA
GRAM
24
2
23
3
BA
CKLIGHT
-ADJ
BA
CKLIGHT
-SW
CN104A
CN3601
PR
O
TECT1
PR
O
TECT2
RESET
T
O
PO
WER
SUPPL
Y
BLOCK DIA
GRAM
INPUT0
A11
INPUT0
INPUT1
E12
INPUT1
INPUT2
D12
INPUT2
D1
SLO
W
-SW1
E1
FBIN1
C12
S-SW
SLO
W
-SW1
FBIN1 S-SW INPUT2
Q3823
Q3819
Q3822
MAIN CB
A