Sharp LL-T15S1 (serv.man9) Service Manual ▷ View online
A
Screen does not operate normally.
Check RGB cable.
Defective
Replace RGB cable with
a new one.
a new one.
Check screen condition by changing display modes.
Reset the microprocessor to check if screen condition changes.
(Press and hold MENU and SELECT buttons while turning on power switch.)
(Press and hold MENU and SELECT buttons while turning on power switch.)
Screen stays in black.
Screen stays in white.
Screen jitters or on-screen
characters flicker.
characters flicker.
Abnormal color
Check the following signals
1) Check if module control signal is output.
2) Check if gate voltage is output normally.
3) Check if Source voltage is output normally.
Yes
No
Yes
No
Yes
No
CLOCK and PHASE
can be adjusted?
can be adjusted?
Does abnormal area move on
screen when BLACK LEVEL or
CONT is changed after H-POS
or V-POS is set?
screen when BLACK LEVEL or
CONT is changed after H-POS
or V-POS is set?
Switch PWB defective
Main PWB defective.
LCD panel defective.
<Voice output error>
+12 V DC at 1st and 2nd pins of JP1?
Signal input of 4th pin of U12 is at H level
(+5 V DC)?
(+5 V DC)?
Check mute input circuit of I/F board.
Input signal of 3rd and 5th pins of U12 is normal?
Check power supply, vo ice input and voice
input circuit of I/F board.
input circuit of I/F board.
Signal input at 1st and 7th pins of U12 changes
when voice volume is changed.
when voice volume is changed.
Check control PWB and the volume circuit
around U11.
around U11.
Signal output at 8th, 10th, 11th and 13th pins of
U12 is normal?
U12 is normal?
Check amplifier circuit around U12.
Check speakers and speaker cables.
• Check connection of JP1 connector.
• Check fuse F1 of Power Jack PWB.
• Check fuse F1 of Power Jack PWB.
CH
AP
TE
R 6
. C
IRC
UIT
DI
A
G
RA
M
gm
ZAN
11
C30
10P
R54
47K
B21
0
C24
0.1uF
U1
gmZAN1
CVSS1
1
RESER
VED
2
PSCAN
3
RESER
VED
4
RESER
VED
5
PD47
6
PD46
7
RVSS1
8
PD45
9
PD44
10
SRVDD1
11
RVDD1
12
PD43
13
PD42
14
PD41
15
PD40
16
PD39
17
SRVSS1
18
PD38
19
PD37
20
SRVDD2
21
PD36
22
PD35
23
PD34
24
PD33
25
PD32
26
PD31
27
PD30
28
PD29
29
RVSS2
30
PD28
31
PD27
32
RVDD2
33
PD26
34
PD25
35
PD24
36
PD23
37
PD22
38
PD21
39
CVDD1
40
CVSS2
41
PD20
42
PDISPE
43
PCLKA
44
PCLKB
45
PD19
46
PD18
47
PD17
48
RVSS3
49
PD16
50
PD15
51
PD14
52
PD13
53
PD12
54
PD11
55
PD10
56
PD9
57
CVDD2
58
RESER
VED
59
RESER
VED
60
RVSS4
61
PD8
62
PD7
63
PD6
64
RVDD3
65
PD5
66
PD4
67
PD3
68
PD2
69
PD1
70
PD0
71
CVSS3
72
PVS
73
PHS
74
PBIAS
75
PPWR
76
ADC_VDD2
77
ADC_GND2
78
ADC_VDD1
79
ADC_GND1
80
SUB_GNDA
81
ADC_GNDA
82
RESER
VED
83
ADC_VDDA
84
ADC_BGNDA
85
BLUE-
86
BLUE+
87
ADC_BVDDA
88
ADC_GGNDA
89
GREEN-
90
GREEN+
91
ADC_GVDDA
92
ADC_RGNDA
93
RED-
94
RED+
95
ADC_RVDD
A
96
N/C
97
HFS
98
H
D
ATA
99
RESETn
100
IRQ
101
MFB9
102
HCLK
103
CVDD4
108
CVSS4
114
OSD_HREF
115
OSD_VREF
116
OSD_CLK
117
OSD_D
A
T
A
0
118
OSD_D
A
T
A
1
119
OSD_D
A
T
A
2
120
OSD_D
A
T
A
3
121
OSD_FSW
122
MFB11
123
MFB10
124
DVDD
125
DVSS
126
DA
C_DGNDA
127
DA
C_DVDD
A
128
PLL_DVDD
A
129
RESER
VED
130
PLL_DGNDA
131
SUB_DGNDA
132
SUB_SGNDA
133
PLL_SGNDA
134
RESER
VED
135
PLL_SVDDA
136
DA
C_SVDDA
137
DA
C_SGNDA
138
SVDD
139
SVSS
140
TCLK
141
XT
AL/RESER
VED
142
PLL_RVDD
A
143
RESER
VED
145
SUB_RGNDA
146
RESER
VED
147
VSYNC
148
SYN_VDD
149
HSYNC/CS
150
SYN_VSS
151
RESER
VED
152
STI_TM1
153
STI_TM2
154
SCAN_IN1
155
RESER
VED
156
SCAN_IN2
157
SRVSS2
158
SCAN_OUT1
159
SCAN_OUT2
160
MFB0
113
MFB1
112
MFB2
111
MFB3
110
MFB4
109
MFB5
107
MFB6
106
MFB7
105
MFB8
104
PLL_RGNDA
144
C29
NC
C11
0.1uF
D2
BA
V99L
T1
B10
220Z/100M
B13
100
C26
0.1uF
C163
0.1U
D3
BA
V99L
T1
C27
0.1uF
C25
0.1uF
R5
100
C18
1000P
C44
0.01uF
B7
120z/100M
C20
0.1uF
B11
100
D4
BA
V99L
T1
C28
0.1uF
R36
22
B3
120z/100M
C21
22uF/16V
10V
C4
10uF/16V
+
C7
0.1uF
C41
10P
C42
0.01uF
RP1
33
81
72
63
54
C33
0.1uF
B4
120z/100M
C40
NC
C45
0.01uF
RP2
33
81
72
63
54
C12
0.1uF
C15
0.1uF
B6
120z/100M
B9
100
RP3
33
81
72
63
54
C161
15P_
NA
R44
10K
C57
33P
B8
220Z/100M
R8
NC
C14
0.1uF
RP4
33
81
72
63
54
C162 15P_NA
R45
NA
R12
100
R56
100
RP5
33
81
72
63
54
R46
10K
C34
0.1uF
C35
0.1uF
C47
0.01uF
X1
OSC50MHz
VDD
8
E/D
1
OUT
5
GND
4
R57
100
RP6
33
81
72
63
54
C8
22uF/16V
10V
R49
NC
0603
1
2
C10
0.1uF
R58
100
RP8
33
81
72
63
54
R50
NC
0603
1
2
B14
120z/100M
R1
10K
C65
47P
C1
22uF/16V
U5
24C21
VCC
8
TEST
1
NC
2
WP
3
VSS
4
VCLK
7
SCL
6
SD
A
5
RP7
33
81
72
63
54
C31
22uF/16V
R10
100
R35
0
C22
0.1uF
C66
47P
C19
22uF/16V
RP10
33
81
72
63
54
C64
0.1uF
D5
BA
V99L
T1
R6
100
C2
0.1uF
J1
PH_12P
1
2
3
4
5
6
7
8
9
10
11
12
B16
120z/100M
B2
220Z/100M
C5
22uF/16V
R34
NA
B17
120z/100M
U2E
74F14
SO14
11
10
14
7
C32
0.1uF
B83
220Z/100M
C6
0.1uF
B18
120z/100M
C165
0.1uF
C43
0.01uF
C9
0.1uF
R3
75
R4
75
B12
220Z/100M
U2C
74F14
SO14
56
14
7
U2D
74F14
SO14
98
14
7
U2B
74F14
SO14
34
14
7
C36
0.1uF
R40
NA
C23
0.1uF
R11
100
C37
0.1uF
R43
NA
C160
15P_
NA
C46
0.01uF
C13
0.1uF
B1
500z/100M
C38
0.1uF
D6
BA
V99L
T1
R2
75
C3
0.1uF
C17
10P
C39
0.1uF
B19
0
R20
10
C16
NC
B5
220Z/100M
D1
BA
V70L
T1
C49 15P
R55
47K
B20
0
E_R2
E_R3
E_R5
E_R4
E_G2
E_G3
E_R7
E_R6
E_G7
E_G4
E_G6
E_G5
O_R7
O_G2
O_G3
O_G5
O_G4
O_B2
O_B3
O_G7
O_G6
O_B7
O_B4
O_B6
O_B5
G_IN
R_IN
DDC_SCL
VSYNC
DDC_SD
A
HSYNC
VSYNC
B_IN
PD27
PD19
PD15
PD7
BLUE-
D
VDD
A
PD10
PD2
GREEN+
PD34
PD28
PD17
PD6
PD31
BLUE+
PD26
PD24
PD3
PD21
PD8
GREEN-
VCC_3.3V
PD22
PD16
VDD
A
RED+
SVDD
A
PD13
RED-
PD14
PD4
PD35
PD33
PD11
PD9
PD1
PD32
PD29
PD18
PD30
PD25
PD5
PD20
PD23
PD0
PD12
R
VDD
A
E_B5
E_B4
O_R4
E_B6
O_R2
E_B2
E_B7
O_R3
O_R5
O_R6
E_B3
V
GA_B
HS_V
GA
DDC_SCL
DDC_SD
A
VS_V
GA
V
GA_G
VS_V
GA
V
GA_R
HS_V
GA
H_IN
V_IN
ADC_GND
A
ADC_GND
A
ADC_GND
A
+5V
ADC_GND
A
+3.3V
ADC_GND
A
ADC_GND
A
ADC_GND
A
+5V
DDC+5V
+5V
+3.3V
VCC_FR
OM_PC
GND
GND
GND
GND
GND
GND
GND
GND
VCC_FR
OM_PC
GND
VCC_FR
OM_PC
+5V
GND
GND
GND
GND
+3.3V
ADC_GND
A
GND
ADC_GND
A
ADC_GND
A
DDC+5V
GND
GND
ADC_GND
A
ADC_GND
A
+3.3V
GND
+5V
H
D
ATA
0
IRQ
DE
V_SYNC
H_SYNC
EN_BL#
LCD_CLK
HFS
HCLK
RESET#
H
D
ATA
1
H
D
ATA
2
H
D
ATA
3
O_B2
O_B3
O_B4
O_B6
O_B7
O_B5
O_G2
O_G3
O_G6
O_G4
O_G5
O_G7
O_R2
O_R6
O_R4
O_R3
O_R5
O_R7
E_B2
E_B3
E_B4
E_B6
E_B7
E_B5
E_G2
E_G3
E_G6
E_G4
E_G5
E_G7
E_R7
E_R5
E_R6
E_R3
E_R4
E_R2
EN_LCD
V_ST
A
T
E
INPUT A
C
COUPLING
DIGIT
A
L
SUPPL
Y
DECOUPLING
ANALOG SUPPL
Y
DECOUPLING
T
O
EXTERNAL SIGNA
L CABLE
DDC+5V
1.
I
NTE
RF
A
CE
PW
B
1/4
GND
NO
TE:
ANALOG AND D
IGIT
AL GR
OUNDS MU
ST BE
INTERCON
NECTED A
T
A SINGLE
POINT
B80
0
B81
0
1206
1206
1206
0805C
0805C
R11
1
10K/
NA
0603
R12
1
0
U10
24LC
16B
A0
1
A1
2
A2
3
VSS
4
SI
5
SCK
6
WP
7
VCC
8
R12
8
1K
12
C94
0.1uF
R13
1
2K
12
R10
9
10K
0805
5%
C87
33P
JP4
HEA
DER
_4
1
2
3
4
R79
4.7K
R66
499
R83
10K
R63
40.2K
0805
C80
1uF
16V
0805
C67
1000
P
0805
C85
0.1U
/20V
/NA
R73
100K
0603
B37
300z
/100
M
B33
220z
/100
M
B27
3
00z
/100
M
Q4
2SB
1124
B
EC
R84
10K
R11
0
47K
0603
C71
1uF
0805
C78
10uF
/16V
CPW
X4.3
+
R62
2.94K
B26
3
00z
/100
M
C77
10uF
/16V
CPW
X4.3
+
RP11
4.7K
*4
8
1
7
2
6
3
5
4
B25
3
00z
/100
M
C99
22uF
/16V
U7
EZ1
084C
T
VIN
3
GND
1
VO
U
T
0
2
VO
U
T
1
4
C98
0.1uF
B22
500z
/100
M
3216
RP12
4.7K
*4
8
1
7
2
6
3
5
4
B28
3
00z
/100
M
R70
165
0603
1%
R67
100
0603
1%
RP13
4.7K
*4
8
1
7
2
6
3
5
4
B31
3
00z
/100
M
R65
499
B30
3
00z
/100
M
C82
100u
F/25V
CPW
X8.3
+
JP3
PH_5
1
2
3
4
5
Q7
MMB
T39
04L
C
B
E
C76
0.01u
F
Q8
MMB
T39
06L
B
R53
1M
Q10
MMB
T39
04L
C
B
E
B29
3
00z
/100
M
R75
1K
0603
C79
470u
F/
16V
+
Q9
MMB
T39
06L
B
R9
4.7K
1
2
B35
300z
/100
M
B24
3
00z
/100
M
R76
10K
0603
Q5
MMB
T39
06L
B
E
C
R87
15K
R52
4K7
0603
R71
22
0603
B32
3
00z
/100
M
R59
0
R88
470
R64
4.99K
0805
1%
R89
0/N
A
C73
0.1uF
U6
HIP6
013
RT
1
OCS
ET
2
SS
3
COM
P
4
FB
5
EN
6
GND
7
PHA
SE
8
UGA
TE
9
BOO
T
10
NC3
11
NC2
12
NC1
13
VCC
14
R69
1K
0805
C72
0.1uF
L1
47U
H/8A
CHO
KE_
ETQ
P_CD
RH1
25
C68
1uF
16V
0805
D10
SR34
C69
470u
F
/16V
+
JP1
PH_6
1
2
3
4
5
6
C88
33P
R90
0/N
A
C70
0.1uF
B36
300z
/100
M
C89
33P
D11
RLZ
15A
A
K
R81
47K
C93
0.1uF
U9
KIA7
042
3
1
2
C95
10uf/
16V
C90
33P
JP2
PH_9
1
2
3
4
5
6
7
8
9
R91
15K
D13
1N4
148/N
A
A
K
C97
22P
C91
33P
C81
1uF
16V
0805
R80
470
C96
22P
C74
33P
C92
33P
CHO
KE1
COM
_CH
OKE
_4A
1
4
2
3
R92
10K
Y2
20MH
z/22
P
D12
RLZ
15A
A
K
R82
470K
R93
470
Q3
HUF
7530
7D
G
D
S
RP14
4.7K
*4
8
1
7
2
6
3
5
4
R12
7
2
2
DRA
IN
5
DRA
IN1
6
DRA
IN2
7
DRA
IN3
8
Q14
MMB
T39
04L
B
E
C
D9
1N4
148
MLL3
4B
A
K
R74
10K
0603
C75
470u
F/
16V
+
J2
3PX
1
/.1/M
A/GO
LD
1
1
2
2
3
3
R85
100K
/NA
B34
220Z
/100M
0805
C
RP15
4.7K
*4
8
1
7
2
6
3
5
4
U11
M675
9
P1.0
/T2
2
P1.1
/T2E
X
3
P1.2
/ECI
4
P1.3
/CEX
0
5
P1.4
/CEX
1
6
P1.5
/CEX
2
7
P1.6
/CEX
3/W
A
IT#
8
P1.7
/CEX
4/A1
7/W
9
RST
10
P3.0
/RXD
11
P3.1
/TXD
13
P3.2
/INT
0
#
14
P3.3
/INT
1
#
15
P3.4
/T0
16
P3.5
/T1
17
P3.6
/WR#
18
P3.7
/RD#
/A16
19
XT
AL
2
20
XT
AL
1
21
VSS
22
A8/P
2.0
24
A9/P
2.1
25
A10/
P2.2
26
A11/
P2.3
27
A12/
P2.4
28
A13/
P2.5
29
A14/
P2.6
30
A15/
P2.7
31
PSE
N#
32
ALE
/PR
O
G#
33
EA#
/VPP
35
AD7/
P0.7
36
AD6/
P0.6
37
AD5/
P0.5
38
AD4/
P0.4
39
AD3/
P0.3
40
AD2/
P0.2
41
AD1/
P0.1
42
AD0/
P0.0
43
VCC
44
NIC
1
NIC
12
NIC
23
NIC
34
R72
100K
0603
C86
33P
SCL
SD
A
RES
ET
KEY
_DO
W
N
#
KEY
_UP#
KEY
_SE
LECT
#
KEY
_MEN
U#
LED_
GRE
EN#
EN_B
L#
EN_L
CD
RES
ET
KEY
_SE
LECT
#
KEY
_MEN
U#
SOF
T_P
WR#
KEY
_DO
W
N
#
SD
A
SCL
HO
T_KE
Y
A
U
TO_BR
I_CT
RL
KEY
_UP#
LED_
GRE
EN
LED_
GRE
EN
LED_
AMB
ER
LED_
AMB
ER
LED_
AMB
ER#
A
U
TO_BR
I_DE
TEC
T
PO
W
ER_O
N#
A
U
TO_BR
I_CT
RL
A
U
D
IO_P
WM
HO
T_KE
Y
A
U
TO_BR
I_DE
TEC
T
SOF
T_P
WR#
+5V
+5V
+5V
+5V
GND
GND
+5V
GND
GND
+5V
GND
GND
GND
GND
GND
+5V
GND
+5V
GND
GND
GND
GND
GND
GND
+5V
GND
+5V
GND
GND
+5V
+5V
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
+5V
HD
AT
A0
RES
ET#
IRQ
HFS
HD
AT
A1
HD
AT
A2
HD
AT
A3
HCL
K
BRI_
PWM
H_PO
LARI
TY
V_P
OLA
RITY
V_S
T
A
T
E
A
U
D
IO_P
WM
EN_B
L#
EN_L
CD
A
U
D
IO_P
WR
R11
3
NC
0603
U14
A
74AH
CT7
4
D
2
CLK
3
Q
5
Q
6
VCC
14
PR
4
GND
7
CL
1
R11
6
10K
R12
2
NC
R60
NC
0603
R11
2
1K
0603
C84
0.1U
/20V
/NA
R78
47K
R11
7
510R
/080
5
R11
9
NC
0603
1
2
C15
8
0.1U
D14
RLZ
5.1
A
K
R12
0
47K
0603
1
2
C15
7
10uF
/
16V/
NC
U16
TC7
4S1
4F
NC
1
IN
2
GND
3
OUT
4
VCC
5
C52
10uF
/16V
1
2
+
C83
10uF
/16V
CPW
X4.3
+
U13
KIA7
045
RST
N
E
VCC
B
GND
C
R68
470
R77
10K
U8
TPS1
100D
SOU
RCE
1
1
SOU
RCE
2
2
SOU
RCE
3
3
GA
T
E
4
R96
NC
R86
0
C15
6
100P
Q6
MMB
T39
06L
B
E
C
R94
NC
C53
0.1U
50V
0603
1
2
R11
8
4K7
R11
4
0
C15
5
10uF
/16V
EN_L
C
D
PO
W
ER_O
N#
SWPSW
GND
GND
+5VP
+5VP
GND
GND
GND
GND
+5VP
+5VP
GND
GND
+5V
GND
+5VP
GND
GND
A
U
D
IO_P
WR
IRQ
PO
WE
R_M
CU1
2/4
GND
OUT
VCC
+3.3
V
VCC
_LC
D
12VI
N
VDD
_12
VDD
_12
+3.3
V
+5V
+5V
12VI
N
12VI
N
P
A
R
AME
TER
EEP
R
O
M
PO
WER
CONN.
O
V
ER
V
O
T
A
G
E
P
R
OTEC
TIO
N
12V
-->5
V
5V
-->3
.3V
RES
ET
LCD
PO
WE
R
T
O
D
E
B
U
G
POR
T
T
O
S
ENS
OR
BD
T
O
K
E
Y S
W
B
D
T
O
D
C
J
A
CK B
D
P
A
N
EL V
DD
SEL
ECT
O
R
12V
12V
GND
GND
HAN
NST
AR/H
SD1
50MX
42--
3.3V
--->1
,2 S
HOR
T
KEY
_MEN
U#
KEY
_SE
LECT
#
KEY
_UP#
KEY
_DO
W
N
#
HO
T_KE
Y#
SOF
T_P
WR#
GND
LED_
AMB
E
R
LED_
GRE
EN
5V
A
U
TO_BR
I_DE
TEC
T
A
U
TO_BR
I_CT
RL
GND
1%
1%
1%
1%
5V
5V
R03
R03
R94
, R1
22 R
ESER
VE F
OR S
OFT
W
A
RE PO
WER
R03
: Side entr
y to
T
o
p
entr
y
R03
: SM
D to
Lo
w
ESR
DIP
R03
R03
+5V
VDD
_12
LO
W
ON
PO
WER
SWITCH
LO
W
ON
R03
R03
R13
3
2.2K
0603
GND
R04
E
C
E
C
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