FUNAI LT850-M19 - SERVICE, Service Manual

Page: 27 / 70

9-1
System Control Block Diagram
A0CN0BLS
BLOCK DIAGRAMS
C25
KEY SWITCH
IC3301 (MAIN MICR
O CONTR
OLLER)
DIGIT
AL MAIN CB
A UNIT
FUNCTION CB
A
MAIN CB
A
CN101B
REMO
TE
SENSOR
RS101
AL+3.3V
D102 PO
WER
ST
ANDBY
D101
P
ANEL
+24V
LED1
44
CN101A
REMO
TE
22
CN3703
CN303
CLK
OUT
-Y1-25M
CLKIN-Y1-25M
X3101
25MHz OSC
AH1 AG
1
SCL SD
A
8 9
TU10 (TUNER
UNIT)
TO INVER
TER
BLOCK DIA
GRAM
TO PO
WER SUPPL
Y
BLOCK DIA
GRAM
PR
O
TECT3
AJ11
VCOM-PWM
AH3
PR
O
TECT1
AH11
KEY
-IN1
AJ9
BA
CKLIGHT
-SW
AF9
LED1
AJ1
P-ON-H2
AK8
REMO
TE
AK1
P-ON-H1
PR
O
TECT1
P-ON-H2 P-ON-H1
AH2
JUNCTION CB
A
CN101
KEY
-IN1
66
CN152
CN303
CN3703
AH27
BA
CKLIGHT
-ADJ
IC3102 (SERIAL FLASH MEMOR
Y)
CLOCK
D
A
T
A-IN
D11 B10
6 5
E23
TUNER-CLK
TUNER-D
A
T
A
CN303
CN3703
CN302
CN3701
SPI-CLK SPI-WR
D
A
T
A-OUT
E12
2
SPI-RD
IC301
,Q301,
Q302,Q303
DRIVE
23
23
SCL
22
22
SD
A
5
5
PR
O
TECT1
4
4
PR
O
TECT3
4
4
VCOM-PWM
2
2
BA
CKLIGHT
-SW
1
1
BA
CKLIGHT
-ADJ
KEY
-IN1
11
11
P-ON-H1
11 REMO
TE
13
13
LED1
14
14
P-ON-H2
22
LED1
44 REMO
TE
22
KEY
-IN1
66
T
O A
UDIO
BLOCK DIA
GRAM
T
O VIDEO
BLOCK DIA
GRAM
A
UDIO-MUTE
A
UDIO-MUTE
AG
9
S-SW
S-SW
AK2
A
UDIO-MUTE2
A
UDIO-MUTE2
D17
HEADPHONE-DET
HEADPHONE-DET
C17
HEADPHONE-MUTE
HEADPHONE-MUTE
AK3
CN301
10
VCOM
T
O LCD MODULE
ASSEMBL
Y
Q102 AL+3.3V