FUNAI F42PDME, Service Manual

Page: 35 / 90

1-8-1
BLOCK DIAGRAMS
System Control Block Diagram
L0605BLS
SWITCH CB
A
LED-A CB
A
DIGIT
AL CB
A UNIT
ANALOG CB
A
IC205 (PDP MICR
OCONTR
OLLER)
IC1401 (DIAPLA
Y CONTR
OLLER)
IC201 (MEMOR
Y)
+3.3V
+3.3V
+3.3V
SW1401
RESET
CN203
CN1902 CN1904
KEY SWITCH
KEY
-IN-PO
W
CN1703
CN1706 CN1910
RXD
TXD
REMO
TE
RESET
P-OFF-RQ
P-OFF-H
T17 Y12 V12 V11 Y11
W14
Y15
22
KEY
-IN1
33
KEY
-IN2
11
MCU+3.3V
22
ST
ANDBY
-LED
44
KEY
-IN3
CN204
RXD REMO
TE
CN1901
66
PO
WER-KEY
44
REMO
TE
22
PO
WER-LED
33
ST
ANDBY
-LED
KEY
-IN1
V16
KEY
-IN2
W16
KEY
-IN3
Y16
V
OLUME
V15
SW1908
R
V1901
PO
WER
D1908, D1909
PO
WER
Q1401
V
OLUME
CONTR
OL
Q271
Q272
Q207
Q206
B
UFFER
REMO
TE
SENSOR
+3.3V
+3.3V
+3.3V
D1910, D1911
ST
ANDBY
D1903, D1904
ST
ANDBY
LED-B CB
A
CN1905
CN1911
11
MCU+3.3V
22
ST
ANDBY
-LED
D1905, D1906
ST
ANDBY
15 39
TXD PO
WER-SW
P-ON-H
4
56 14
RESET
-181
38
P-OFF-RQ
54
P-OFF-H A-OUT
-MUTE
A
UDIO-SW0
A
UDIO-SW1
A
UDIO-SW2
A-OUT
-MUTE
A
UDIO-SW0
A
UDIO-SW1
A
UDIO-SW2
SCL
SD
A
SCL SD
A
55 31 30 29 28 48 47
A-MUTE
Q295
V
OLUME
32
P-ON-H
T
O
A
UDIO
BLOCK DIA
GRAM
T
O
VIDEO
BLOCK DIA
GRAM
T
O
PO
WER SUPPL
Y
BLOCK DIA
GRAM
TO PO
WER SUPPL
Y
BLOCK DIA
GRAM
6 5
IC1404 (MEMOR
Y)
SCL SD
A
6 5
SCL
W13 W19
SD
A
V13
RESET
P
ANEL-ON
RESET
Y14
I2C-READ
Y
Y13
P
ANEL-ON
T
O
DIGIT
AL
SIGNAL PR
OCESS 1
BLOCK DIA
GRAM
T
O
DIGIT
AL
SIGNAL PR
OCESS 2
BLOCK DIA
GRAM
SCL SD
A
SCL SD
A
SCL SD
A
I2C-READ
Y
P
ANEL-ON
12
KEY
-IN-PO
W
8
RXD
7
TXD
10
REMO
TE
4
RESET
-181
14
P-OFF-RQ
15
P-OFF-H
16
V
OLUME
12
KEY
-IN-PO
W
1
1
1
1
16
TXD
17
RXD
14
REMO
TE
20
RESET
-181
10
P-OFF-RQ
9
P-OFF-H
8
V
OLUME
13
V
O
LUME-MUTE
11
V
O
LUME-MUTE
Q1901
Q1902