Sharp LL-191A Service Manual ▷ View online
LL-191A-W/B
DISASSEMBLY AND ASSEMBLY
3 – 2
7.
REMOVING SPEAKER AND BUTTON PWB
Remove the eight screws
1
, and remove the speaker
2
.
Remove the three screws
3
, and remove the speaker bracket
4
.
Remove the button PWB
5
.
Caution: Although form is well alike, since the stand of LL-191A series
differs in hinge torque, spring pressure, etc. from the stand of
LL-171A series, it is incompatible.
LL-171A series, it is incompatible.
It warns against being intermingled.
LL-191
LL-171
The front side of stand
Two places in the machine
screw fixing part.
The front side of stand
No machine screw fixing part.
1
1
1
2
3
3
4
4
5
2
1
Machine screw
Machine screw
stop part
stop part
stop part
Machine screw
fixing part
fixing part
LL-191A-W/B
BLOCK DIAGRAM
4 – 1
CHAPTER 4. BLOCK DIAGRAM
Input R,G,B
connector
(D-sub connector)
MST9111A
Panel
RIN.GIN.BIN HSYNC.VSYSNC
LVDS OUTPUT
(RXE[0..3]
㫧
,RXO[0..3]
㫧
)
MCU
䇭
MTV312M64
DDC_CLK
DDC_DAT
DDC EEPROM
24LC21
DATA EEPROM
24LC16
SDA
SCL
CSZ
HWRESET
INT
POWER/INVERTER
BOARD
BRIGHTNESS
BACKLITE ENABLE
U7
7414_0
PANEL ENABLE
VLCD
KEY PAD
AUDIO
AP2121
AUDIO INPUT
Standby
VOLUME
L/R Speaker
L/R Earphone
Main Board
J16
J2
J15
LL-191A-W/B
BLOCK DIAGRAM
4 – 2
■
CONNECTOR SIGNAL TABLE
[MAIN PWB]
CONNECTOR J6
JACK J2
CONNECTER J4
CONNECTOR J5
CONNECTOR J15
CONNECTOR J16
1
RED
2
GREEN
3
BLUE
4
GND
5
GND
6
RGND
7
GGND
8
BGND
9
DDC5V
10
SGND
11
N.C.
12
SDA
13
HSYNC
14
VSYNC
15
SCL
16
RED
1
GND
2
L
3
R
4
N.C.
5
N.C.
6
N.C.
7
N.C.
8
N.C.
1
GND
2
R SPK-
3
R SPK +
4
SE_BTL
5
L SPK+
6
L SPK
1
N.C.
2
GND
3
RXO3+
4
RXO3-
5
RXOC+
6
RXOC-
7
GND
8
RXO2+
9
RXO2-
10
RXO1+
11
RXE1
12
GND
13
RXO0+
14
RXO0-
15
RXE3-
16
RXEC+
17
GND
18
RXEC+
19
RXEC-
20
RXE2+
21
RXE2-
22
GND
23
RXE1-
24
RXE1+
25
RXE0+
26
RXE0-
27
GND
28
VLCD
29
VLCD
30
VLCD
1
+5VX
2
SN2
3
SN1
4
LED2
5
LED1
6
GND
7
PKEY
1
GND
2
GND
3
PRG_5VX
4
PRG_5VX
5
EN_ON
6
Brightness
LL-191A-W/B
BLOCK DIAGRAM
4 – 3
[POWER • INVERTER PWB]
INLET CN1
CONNECTOR CN2
CONNECTOR CN3
CONNECTOR CN4
CONNECTOR CN5
CONNECTOR CN6
[KEY•SPEAKER PWB]
CONNECTOR WD3
CONNECTOR WD1
CONNECTER J7
JACK JD1
1
L
3
PG
5
N
1
GND
2
GND
3
ORG_5VX
4
ORG_5VX
5
EN_ON
6
Brightness
1
Vhigh-
2
VIow
1
Vhigh-
2
VIow
1
Vhigh-2
2
VIow2
1
Vhigh-
2
VIow-4
1
L SPK+
2
L SPK
3
R SPK+
4
R SPK
1
+5VX
2
SN2
3
SN1
4
LED2
5
Led1
6
GND
7
PKEY
1
GND
2
R SPK-
3
R SPK+
4
SE_BTL
5
L SPK+
6
L SPK-
1
GND
2
HEAD
3
HEAD
4
SE_BTL
5
SW
6
SW
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