Sylvania 6626LDG A, Service Manual, Page: 27 / 74

9-1
BLOCK DIAGRAMS < LCD TV Section >
System Control Block Diagram
L4350BLS
FUNCTION CB
A
KEY
-IN3
15
CN101
KEY SWITCH
KEY
-IN1
KEY
-IN3
KEY
-IN1
3
3
V
OLUME
18
6
AMP-MUTE
16
8
PR
O
TECT1
12
3
A
UDIO-SW1
21
3
A
UDIO-SW2
22
2
A
UDIO-SW0
20
4
KEY SWITCH
IC1502 (SUB MICR
O CONTR
OLLER)
IC1504 (MAIN MICR
O CONTR
OLLER)
IC1401
(HDMI /IF)
TU1001
(TUNER UNIT)
IC1102
(MEMOR
Y)
EPR
OM-WP
TXD1 RXD1
I2C-CLK-C I2C-D
A
T
A-C
SCL SD
A
TXD
RXD
CN1505
19
RESET
XOUT
BA
CKLIGHT
-ADJ
PR
O
TECT1
V
OLUME
XIN
XOUT XIN XOUT XIN RESET
RESET
IC1503
RESET
IC1104
+5V
X1501
4MHz OSC
MAIN CB
A
DIGIT
AL MAIN CB
A UNIT
LED CB
A
MAIN CB
A
CN151
REMO
TE
SENSOR
RCV151
STBY+3.3V
D151
P-ON STBY
D152
BA
CKLIGHT
-SW
+3.3V
TO LCD MODULE
T
O
A
UDIO
BLOCK DIA
GRAM
T
O
A
UDIO
BLOCK DIA
GRAM
PR
O
TECT1
V
OLUME
AMP-MUTE A
UDIO-SW0
A
UDIO-SW1
A
UDIO-SW2
AMP-MUTE
A
UDIO-SW0
A
UDIO-SW1
A
UDIO-SW2
A
UDIO-MUTE
A
UDIO-MUTE
LED1
44
CN151A
REMO
TE
22
LED2
55
CN114
LED1
20
4
CN1113
REMO
TE
19
5
LED2
LED1
REMO
TE
LED2
21
3
BA
CKLIGHT
-SW
12
3
BA
CKLIGHT
-ADJ
22
2
CN1111
CN111
CN1112
CN112
17 32
14 15
31
3
60 23 22
5 1
56
X1101
I2C-CLK-A
T
O
DIGIT
AL
SIGNAL PR
OCESS
BLOCK DIA
GRAM
C11 D16 C16
AH20
AJ20
AJ21 AH21
AG
20
AK21
D20 D21
F28 F27 B14
AG
12
B17 C17 D17 AK8
H2
I2C-D
A
T
A-A
25.14MHz OSC
82 83 14 15
X1102
55.474MHz OSC
6 5 7
I2C-CLK-TUNER I2C-D
A
T
A-TUNER
I2C-CLK-A I2C-D
A
T
A-A
SCL SD
A
SCL
WP
SD
A
P-ON-H
32
1
P-ON-H
T
O
PO
WER
SUPPL
Y
BLOCK DIA
GRAM
P-ON-H
26
IC1507
(L
VDS TRANSMITTER)
SCL SD
A
69 66
BA
CKLIGHT
-SW
12
INT
-PWM
11
CN251
DRIVE
Q252
D
VD-PR
O
TECT
42
0
D
VD-MAIN-PO
WER
61
8
D
VD-PR
O
TECT
D
VD-MAIN-PO
WER
D
VD-PR
O
TECT
48
D
VD-MAIN-PO
WER
33
DISC-OUT
51
9
D
VD-SCLK
71
7
D
VD-CS
81
6
DISC-IN
91
5
D
VD-SD
A
T
A
10
14
D
VD-REMO
TE
11
13
LED-CONT
12
12
D
VD-P-ON
13
11
DISC-OUT
36
DISC-OUT
SCLK
9
D
VD-SCLK
DISC-IN
35
DISC-IN
S
D
ATA
11
D
VD-SD
A
T
A
LED-CONT
29
LED-CONT
D
VD-P-ON
38
D
VD-P-ON
16
CS
Q1015
AK20
REMO
TE
D
VD-REMO
TE
D
VD-CS
T
O
SYSTEM
CONTR
OL / SER
V
O
BLOCK DIA
GRAM
<D
VD SECTION>
INPUT(S2/D
VD)
C12
INPUT(S2/D
VD)
T
O
VIDEO
BLOCK DIA
GRAM
L27
D
VD-A
UDIO-MUTE
D
VD-A
UDIO-MUTE
< D
VD SECTION >
T
O
D
VD DIGIT
AL
SIGNAL PR
OCESS
BLOCK DIA
GRAM