Sylvania 6620 LDF, Руководство по обслуживанию

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9-1
BLOCK DIAGRAMS < LCD TV SECTION >
System Control Block Diagram
L3250BLS
FUNCTION CB
A
KEY
-IN-1
22
CLN114
KEY SWITCH
KEY
-IN-2
11
KEY SWITCH
IC333
(TV MICR
O CONTR
OLLER)
3
21
CN104
11
KEY
-IN-1
RCV
-IN
RESET
RESET
IC151
AL+3.3V(D)
42 43
X161 27MHz
XIN
XOUT
MAIN CB
A
LCD MAIN CB
A UNIT
4
KEY
-IN-2
22 18 17
BA
CKLIGHT
-SW
19
5
BA
CKLIGHT
-ADJ
21
3
P-ON-H
16
8
V
OLUME
15
9
A
UDIO-MUTE
13
11
INPUT
-0
12
12
INPUT
-1
11
13
S-SW
71
7
SCL
61
8
SD
A
51
9
P-ON-H
V
OLUME
A
UDIO-MUTE
SD
A
SCL
INPUT
-0
INPUT
-1
S-SW
SCL SD
A
20 35 31 40 19 32 41
T
O
PO
WER SUPPL
Y
BLOCK DIA
GRAM
T
O
IF/VIDEO
BLOCK DIA
GRAM
T
O
A
UDIO
BLOCK DIA
GRAM
BA
CKLIGHT
-SW
BA
CKLIGHT
-ADJ
P-ON-H
V
OLUME
A
UDIO-MUTE
INPUT
-0
INPUT
-1
S-SW
SCL SD
A
CN102B
CN102A
SD
A
2
SCL
1 CN112
(NO CONNECTION)
IC171 (MEMOR
Y)
SCL
6
SD
A
5 7
WP
B
US-OPEN
4
NO PART MOUNTED FOR CN112
P-ON-H2(NU)
14
10
16
P-ON-H2
AFT
-IN
10
14
5
AFT
-IN
80
TUNERCLK
Q301
B
UFFER
AFT
-IN
FSC
FSC
12
3
B
US-OPEN
51
9
CN103B
CN103A
CN113
(NO CONNECTION)
SD
A
2
SCL
1 B
US-OPEN
4
CN113 IS USED FOR ADJUSTMENT AT FACTORY
P-ON-H
4
5
Q131
3.3V<-->5V CONVER
TER
34
D
VD-MUTE
D
VD-MUTE
23
1
D
VD-PWR-CON
18
6
D
VD-MUTE
D
VD-PWR-CON
TO SYSTEM CONTR
OL
/SER
V
O
BLOCK DIA
GRAM
<D
VD SECTION>
D
VD-PWR-CON
FP-DIN FP-CLK S
D
ATA
REMO
TE
TREDCONTV DISC-OUT DISC-IN
24 27 37 33 36 39 25
D
VD-CS
D
VD-SIN
REMO
TE-OUT
D
VD-IRCONT
DISC-OUT DISC-IN D
VD-SCLK
BA
CKLIGHT
-SW
BA
CKLIGHT
-ADJ
TO LCD BA
CKLIGHT
BLOCK DIA
GRAM
IR SENSOR CB
A
CLN105
REMO
TE
SENSOR
RCV102
CN105
RCV
-IN
33
INVER
TER CB
A
BA
CKLIGHT
-ADJ
99
CN411
CLN411
BA
CKLIGHT
-SW
88
P-ON-H
11
11
P-ON-H
12
P-25V
-ON
P-25V
-ON
T
O
PO
WER
SUPPL
Y
BLOCK DIA
GRAM
26
D
VD-MAIN-PO
WER
D
VD-MAIN-PO
WER
AL+3.3V(D)
23
B
US-OPEN