Sharp LC-13SH1U Wartungshandbuch Seite 28

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Seitenansicht 27
7-1
BLOCK DIAGRAMS
System Control Block Diagram
L0171BLS
FUNCTION CBA
KEY-IN122
CLN104
KEY SWITCH
KEY SWITCH
REMOTE
SENSOR
RCV101
P-ON+3.3V
D101
STAND BY
Q101
KEY-IN211
RCV-IN55
P-ON-H66
CN104
IC333
(TV MICRO CONTROLLER)
KEY-IN118 6
CN112B CN102A
KEY-IN217 7
RCV-IN23 1
BACKLIGHT-SW
19 5
BACKLIGHT-ADJ
21 3
P-ON-H16 8
PROTECT-1915
PROTECT-2816
VOLUME15 9
A-MUTE13 11
INPUT-012 12
INPUT-111 13
S-SW717
SCL618
SDA519
KEY-IN1
KEY-IN2
RCV-IN
BACKLIGHT-SW
BACKLIGHT-ADJ
P-ON-H
PROTECT-1
PROTECT-2
VOLUME
A-MUTE
SDA
SCL
INPUT-0
INPUT-1
S-SW
SCL
SDA
42
43
X171
27MHz
XIN
XOUT
TO POWER SUPPLY
BLOCK DIAGRAM
TO IF/VIDEO
BLOCK DIAGRAM
TO AUDIO
BLOCK DIAGRAM
BACKLIGHT-SW
BACKLIGHT-ADJ
P-ON-H
PROTECT-1
PROTECT-2
VOLUME
A-MUTE
INPUT-0
INPUT-1
S-SW
SCL
SDA
MAIN CBALCD MAIN CBA UNIT
3
4
11
OUTCON
CS
SCLK
SOUT
16
24
25
26
IC202
169
HD
8
PROTECT-310 14
PROTECT-3
VGH-H321
VGH-H
VGH-H
PROTECT-1
PROTECT-3
CN113B CN103A
TO LCD BACKLIGHT
BLOCK DIAGRAM
RESET
Q161
LATCH
CLK
DATA
A/B
(PWM CONTROL)
25
24
23
4
26
6
10
11
12
7
SERIAL
I/F
A/D
CONVERTER
OUTPUT
CONTROL
A/D
CONVERTER
RESISTOR
8
20
19
18
21
15 16
14 13
TO
LCD BLOCK
DIAGRAM
CN112B CN102A
TO POWER SUPPLY
BLOCK DIAGRAM
VREF(0)
VREF(1)
VREF(3)
VREF(5)
VREF(7)
VREF(8)
VREF(10)
VREF(11)
WF3
WF1
WF2
Q253,Q254
PANEL+5.4V
5
VCC
V-COM
V-COM
DRIVE
P-ON-H
21
RESET
RESET
IC161
4 5
+3.3V
SDA 2
SCL 1
BUS-OPEN 4
CN115(NO CONNECTION)
IC181
(MEMORY)
SCL
6
SDA
5
7
WP
23
BUS-OPEN
Q121
3.3V<-->5V
CONVERTER
+5V
CN115 IS
USED FOR
ADJUSTMENT
AT FACTORY
CN112B CN102A
CN112B CN102A
CN112B CN102A
22
6
18
17
7
20
35
31
40
19
32
41
12
NOTE: CBA AND PWB MEANS PRINTED WIRING BOARD.
Seitenansicht 27
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