Read Sharp LB-1085 Service Manual online
LB-1085
WIRING & BLOCK DIAGRAM
8 – 2
2.
SYSTEM BLOCK DIA
GRAM
IC8101IC
8
1
0
1
Digital AV decode & Main CPUD
ig
it
a
l
A
V
d
e
c
o
d
e
&
M
a
in
C
P
U
BCM3553B
C
M
3
5
5
3
PROTECT
IF to MAIN I/F
IF
to
M
AIN
I/
F
IF to MAIN I/F
IF
to
M
AIN
I/
F
N_CPU_RST
IC1403IC
1
4
0
3
CODECC
O
D
E
C
AK4682AEA
K
4
6
8
2
A
E
LB-1085 BLOCK DIAGRAML
B
-1
0
8
5
B
L
O
C
K
D
IA
G
R
A
M
(20pin )
Local BUS/PCI
LVDS OUT
USB
DTV/I2S
DTV/SPDIF
I2C_0
I2C_1
RESET
UART-A
UART-B
I/O
CVBS/S/YPbPr
Digital IN
DVIDATA[29:0]
DVICLK
DVIHSYNC
DVIVSYNC
DVIDE
I2C_2
AV SWITCH
MM3151XQ
RxD,TxD
MAINM
A
IN
SPDIF
POWERP
O
W
E
R
Input switchingIn
p
u
t
s
w
it
c
h
in
g
Cn-Up/DownC
n
-U
p
/D
o
w
n
Vol-Up/DownV
o
l-
U
p
/D
o
w
n
KEYK
E
Y
P2002(4p)
Thermister
PNL+12V
KEY1,KEY2,STANDBYPOW
PS_ON,PNLPOW
BU5V
Von
AC_DET
YPbPr
P101(13p)
OPC_LED,POW_LED_R,POW_LED_G,LED_YOYAKU
CVBS
HDMI_L/R
R/CR
/C
OPCO
P
C
LEDL
E
D
IN1
IC1402IC
1
4
0
2
Sound DSPS
o
u
n
d
D
S
P
VHINJU26120-1Y
ATV.L/R
IN6
IN5
OUT1
OUT2
HDMI H
D
M
I
3
IC2002IC
2
0
0
2
Monitor MicomM
o
n
it
o
r
M
ic
o
m
M16C
UART
P2001P
2
0
0
1
Connector for C
o
n
n
e
c
to
r
fo
r
software writings
o
ft
w
a
re
w
ri
ti
n
g
and emulatora
n
d
e
m
u
la
to
r
BU+3.3V
FRAME,R/L,U/D,TEMP[3:0],O/S_EN
POWER CIRCUIT
MAIN system
A9V
A5V
D5V
D3.3V
D2.5V
D1.8V
VL1.8V
D1.67V
D1.0V
etc
OPTICALO
P
T
IC
A
L
OUTO
U
T
IC1604
IC
1
6
0
4
TMDS-SW
T
M
D
S
-S
W
SII9185
$1
I2C
IC2004IC
2
0
0
4
EEPROME
E
P
R
O
M
BR24L08F
DET_PNL12V,DET_10V,DET_5V
I/O
IC2602IC
2
6
0
2
DACD
A
C
M62334FP
I/O
I/O
AC_DET
I/O
THERMO
A/D
OPC
A/D
INT
0
R/C
I/O
IC8452IC
8
4
5
2
FLASHF
L
A
S
H
128Mb1
2
8
M
b
RX_x8
+3.3V
+3.3V
HDMI AudioH
D
M
I
A
u
d
io
INPUTIN
P
U
T
1
INPUTIN
P
U
T
2
V1.L/R
V3.L/R
IN2
10V
BackUp system
BU+5V
BU+3.3V
PM_REQ, CBOOTS
I/O
N_SRESET
I/O
P502(13p)
VIA TO V
IA
T
O
TERMINAL PWBT
E
R
M
IN
A
L
P
W
B
P9301P
9
3
0
1
Connector forC
o
n
n
e
c
to
r
fo
r
software writings
o
ft
w
a
re
w
ri
ti
n
g
HDMI_L/R
IC1301IC
1
3
0
1
I/OI/
O
M62320
+5V
IC2701IC
2
7
0
1
SP AMP
TPA3100D
AMP+13V
+5V
IC8305IC
8
3
0
5
VTTV
T
T
IC8151-4IC
8
1
5
1
-4
DDR1D
D
R
1
256Mb*4
CN9201C
N
9
2
0
1
Connector for
panel detect
S
PNL+12V
WP
SHIP_EN,PNL_EN
HP_PLUG
HP_PLUG
LINE_L/R
SPOUT_L/R
Disclete
Mute
LINE_MUTE
Disc
le
te
Mute
AMP_MUTE
STANDBY
A/D
AFT
N_SRESET
In2
In1
Sel_1/2/3
IC1603IC
1
6
0
3
EEPROM
IN3
INPUTIN
P
U
T
3
SII9125_MUTE
DVI_L/R
DVI AudioD
V
I
A
u
d
io
(Mini Plug)(M
in
i
P
lu
g
)
HDMIH
D
M
I
2 2
RX_x8
IC1601IC
1
6
0
1
EEPROM
In3
+3.3V
P2703P
2
7
0
3
EXT-SP
SPS
P
IC2008IC
2
0
0
8
GateG
a
te
7WH126FU
PNL_DET[0:4]
MODEL_DET[0:4]
WP
DVI_L/R
IN4
DSP_MCLK,DSP_BCKIN,DSP_LRCK
OPT_OUT
IC1302
IC1304
Mute
I2S
CVBS/LRC
V
B
S
/L
R
S VideoS
V
id
e
o
Audio OutA
u
d
io
O
u
t
+3.3V
X1401
X'tal
P105 (4p)
RST_H8FLS_CPLD
FLAS_W_CPLD
RS_BUF_CNT
CNVss
RxD,TxD
HDMI_CEC_IN
CEC_I_UCOM
VIDEO 1
Main
Out
COMP 1
VIDEO 2
CVBS 3
LEDL
E
D
IC1502IC
1
5
0
2
HDMI RXH
D
M
I
R
X
SII9125
$4.5
+3.3V
X8101
X'tal
33/27MHz
IC3301IC
3
3
0
1
ADCA
D
C
THC7981
$4.51
S 3
SIDES
ID
E
I2S
IC1606IC
1
6
0
6
BufferB
u
ff
e
r
BU+3.3V
SC9201S
C
9
2
0
1
connector forc
o
n
n
e
c
to
r
fo
r
model detectm
o
d
e
l
d
e
te
c
t
X1501
X'tal
X2002
XtalX
ta
l
20MHz
BU+3.3V
N_DBG_RST
to RST of each IC
IC3201IC
3
2
0
1
SYNCS
Y
N
C
TB1305
$1.42
I2C0
I2C
0
(100KHz 3.3V)
TerminalT
e
rm
in
a
l
IC8454IC
8
4
5
4
EEPROM
64kbit
I2C2
(400KHz)
TS IN/OUT
INPUTIN
P
U
T
5
INPUTIN
P
U
T
6
Main Y/V
Main C/Cb
Main Cr
INPUTIN
P
U
T
7
IC1752
IC
1
7
5
2
TMDS-SW
T
M
D
S
-S
W
SII9185
$1
HDMI H
D
M
I
1
DVID
V
I
INPUTIN
P
U
T
4
YPbPr
CVBS
V2.L/R
CVBS 2
COMP 2
LRL
R
ComponentC
o
m
p
o
n
e
n
t
IC7501IC
7
5
0
1
RS232C TxRx
ISL83220
TxD/RxD
RS-232CR
S
-2
3
2
C
Vbrt
STB_CPU
STB
From CPU
ROMSEL0,1
I2C
1
(100KHz 5V)
I2C_3
I2C3
(400KHz 5V)
I2C
0
(100KHz 3.3V)
IC2001IC
2
0
0
1
ResetR
e
s
e
t
BU+3.3V
V1.L/R
V3.L/R
V2.L/R
OUT3
RESET_OUTb
RESET_OUTb
COD_LRCK,COD_BCK
DSP_SDIN1
COD_SDOUT
DSP_SDOUT1,2
From
HDMI Rx
SC8001S
C
8
0
0
1
USBU
S
B
ATV,V1,V2,V3.L/R
J801J
8
0
1
USBU
S
B
To Terminal
From SIDE
To HDMI
From CPU
ERR_PNL
VIDEO 3
ComponentC
o
m
p
o
n
e
n
t
CVBS/LRC
V
B
S
/L
R
YPbPr
CVBS
V4.L/R
INPUTIN
P
U
T
7
From TERM
To TERM
INPUTIN
P
U
T
6
SP_MUTE
I2C
2
(400KHz)
+5V
+3.3V
+1.8V
HD/VDH
D
/V
D
54.000MHz
28.322MHz
12.288MHz
SC9202S
C
9
2
0
2
Connector for C
o
n
n
e
c
to
r
fo
r
panel detectp
a
n
e
l
d
e
te
c
t
I2C
CVBS
+3.3V
USB_N/P
USB_ON
USB_FLT
To SIDE
USB_N/P
USB_ON
USB_FLT
From MAIN
USB_N/P
RX_x8
IC1751IC
1
7
5
1
EEPROM
In2
In1
RX_x8
IC1602IC
1
6
0
2
EEPROM
+5V
+9V
+3.3V
RGB
H/V
+3.3V
+5V
+5V
+9V
+1.8V
Analog IN
Y Cb Cr
CEC_O_UCOM
BU+3.3V
USB_5V
To UCOM
CEC_O_UCOM
CEC_I_UCOM
Digital
out
R/G/B in
H/V in
H/V
Y
USB_5V
BU+3.3V
IC1401IC
1
4
0
1
INVERTERIN
V
E
R
T
E
R
TC7WU04F
IC9002/IC9003
Matrix
IC7520IC
7
5
2
0
EEPROM
BU+3.3V
+5V
TCONT
C
O
N
FlashMemory
64Mbit
(41pin )
UPPERU
P
P
E
R
SUBS
U
B
TCON T
C
O
N
LOWERL
O
W
E
R
SUB TCONS
U
B
T
C
O
N
80 FP C
80 FP C
80 FP C
80 FP C
P2603
P2
60
3
(4pin )
INVERTER CIRCUITIN
V
E
R
T
E
R
C
IR
C
U
IT
INVERTERIN
V
E
R
T
E
R
INVERTER CIRCUITIN
V
E
R
T
E
R
C
IR
C
U
IT
INVERTERIN
V
E
R
T
E
R
HCFL BLH
C
F
L
B
L
242
4
PCSP
C
S
LCD PANELL
C
D
P
A
N
E
L
1920 x 10801
9
2
0
x
1
0
8
0
80 FP C
80 FP C
80 FP C
80 FP C
ACA
C
LINE FILTERL
IN
E
F
IL
T
E
R
S
W
SIGNALS
IG
N
A
L
POWER
P
O
W
E
R
INVERTERIN
V
E
R
T
E
R
POWERP
O
W
E
R
INVERTERIN
V
E
R
T
E
R
POWERP
O
W
E
R
ACA
C
200V - 240 2
0
0
V
-
2
4
0
V
DCD
C
3803
8
0
V
DC D
C
3803
8
0
V
15V1
5
V
12V1
2
V
10V1
0
V
6V6
V
LCDL
C
D
sub s
u
b
MURA
HOSEI_OD
OD
EV
SD
CARD
FIFO
_CTRL
FLASH
_CTRL
MURA
HOSEI_EV
SD
_CTRL
(41pin )
LVDS
Rx
LVDS
Tx
MURA
HOSEI_O
CONC
O
N
NECN
E
C
TIONT
IO
N
15V1
5
V
10V1
0
V
6V6
V
TCON
Sub TCON
LCD sub
+B
121
2
V
A
B
C
D
876
5
4
3
21
1
2
3
4
5
6
7
8
D
C
B
A
A
B
C
D
876
5
4
3
21
1
2
3
4
5
6
7
8
D
C
B
A
A
B
C
D
876
5
4
3
21
1
2
3
4
5
6
7
8
D
C
B
A
A
B
C
D
876
5
4
3
21
1
2
3
4
5
6
7
8
D
C
B
A
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