LG 42LGX (CHASSIS:LA84B) Service Manual ▷ View online
C
2008
- 17 -
10. ISP Download (option)
10.1 Overview
The Micom upgrade via the external port for the service for
the customer.
the customer.
10.2 Device to use
1) PC
2) B/D for the interface (IIC & ISP)
3) Jig for downloading (for the power supply)
2) B/D for the interface (IIC & ISP)
3) Jig for downloading (for the power supply)
10.3 Adjustment wiring diagram (Download device
configuration diagram)
10.4 Adjustment condition (Download condition)
- IC name & Circuit number: MYSON MTV416GMF & IC4015
- Power supply: 5V (P4004 Pin 3)
- SCL: D-sub Pin 10
- SDA: D-sub Pin 7
- Power supply: 5V (P4004 Pin 3)
- SCL: D-sub Pin 10
- SDA: D-sub Pin 7
10.5 How to adjust (for downloading)
1) fter executing LGE Monitor Tools v1.1, click the first icon.
(See the figure)
2) When the screen is displayed as shown at the below
figure, set the items as follows:
- MCU Select: MTV512M64
- R/W Option: Auto Write(Verify)
- Jig Option: Myson
- Transmit Speed: Medium
- Check: blank
- PORT: Select the Parallel Port to use (LPT1 in general)
- R/W Option: Auto Write(Verify)
- Jig Option: Myson
- Transmit Speed: Medium
- Check: blank
- PORT: Select the Parallel Port to use (LPT1 in general)
*caution: Select the EPP as LPT from the ROM BIAS setting.
3) Click the Load File Button, and select the desired Hex File
to download.
(If no file is displayed, make sure that the file format is
selected as Hex file (*.hex))
selected as Hex file (*.hex))
4) Click 'Send Button'
Main B/D
Interface B/D
C
2008
- 18 -
TROUBLESHOOTING
A
T
/NT Tune
r
BCM3553
F
M
S6400
CVB
S
IF_V
SB/
QAM
SD_CVBS
1
ED
S
A
FE_I
F_
N
ED
S
A
FE_I
F_P
AV
1
SD_CVBS
3
Component1
SD_
Y
1
SD_PR1
SD_PB1
Component2
SD_
Y
2
SD_PR2
SD_PB2
RGB
SD_R
SD_
G
SD_B
RGB
_HS
YNC
RGB
_V
S
Y
NC
PI
3HDMI
3
4
1
ART
HDMI0
HDMI_RX
_
0
_CL
K_N
HDMI_RX
_
0
_CL
K_P
H
D
M
I_
R
X_0_
D
A
T
A
0_N
H
D
M
I_
R
X_0_
D
A
T
A
0_P
H
D
M
I_
R
X_0_
D
A
T
A
1_N
H
D
M
I_
R
X_0_
D
A
T
A
1_P
H
D
M
I_
R
X_0_
D
A
T
A
2_N
H
D
M
I_
R
X_0_
D
A
T
A
2_P
L
V
D
S
_T
X_0_
D
A
T
A
_0_N
L
V
D
S
_T
X_0_
D
A
T
A
_0_P
L
V
D
S
_T
X_0_
D
A
T
A
_1_N
L
V
D
S
_T
X_0_
D
A
T
A
_1_P
L
V
D
S
_T
X_0_
D
A
T
A
_2_N
L
V
D
S
_T
X_0_
D
A
T
A
_2_P
L
V
D
S
_T
X_0_
D
A
T
A
_3_N
L
V
D
S
_T
X_0_
D
A
T
A
_3_P
L
V
D
S
_T
X_0_
D
A
T
A
_4_N
L
V
D
S
_T
X_0_
D
A
T
A
_4_P
L
V
D
S
_T
X_1_
D
A
T
A
_0_N
L
V
D
S
_T
X_1_
D
A
T
A
_0_P
L
V
D
S
_T
X_1_
D
A
T
A
_1_N
L
V
D
S
_T
X_1_
D
A
T
A
_1_P
L
V
D
S
_T
X_1_
D
A
T
A
_2_N
L
V
D
S
_T
X_1_
D
A
T
A
_2_P
L
V
D
S
_T
X_1_
D
A
T
A
_3_N
L
V
D
S
_T
X_1_
D
A
T
A
_3_P
L
V
D
S
_T
X_1_
D
A
T
A
_4_N
L
V
D
S
_T
X_1_
D
A
T
A
_4_P
LVDS
_
T
X
_
0
_CL
K_N
LVDS
_
T
X
_
0
_
CL
K_P
LVDS
_
T
X
_
1
_CL
K_N
LVDS
_
T
X
_
1
_
CL
K_P
LVDS
T
M
D
S
141H
AR
F
R
C
-9459
M
LVDS( Module )
HDMI_RX
_
1
_CL
K_N
HDMI_RX
_
1
_CL
K_P
H
D
M
I_
R
X_1_
D
A
T
A
0_N
H
D
M
I_
R
X_1_
D
A
T
A
0_P
H
D
M
I_
R
X_1_
D
A
T
A
1_N
H
D
M
I_
R
X_1_
D
A
T
A
1_P
H
D
M
I_
R
X_1_
D
A
T
A
2_N
H
D
M
I_
R
X_1_
D
A
T
A
2_P
HDMI1
HDMI4
C
2008
- 19 -
Check TU1 Pin16(Video out
put)
Can y
o
u see t
h
e n
o
rmal sign
al?
Check the input(Pin1) of
LP
F(IC808).
Can y
o
u see t
h
e n
o
rmal
w
a
v
e
form?
YES
NO
Could y
o
u measu
re
v
o
ltag
e o
f T
U
1 & IIC lin
es?
A
re they
all normal?
Check the output(Pin8)
of LPF(IC808).
Can y
o
u see t
h
e n
o
rmal
w
a
v
e
form?
Check the input(Pin
A
N
16) o
f BCM3553(IC
100).
Measure
w
a
v
e
form at C658
because it
ís more easy
to
check.
Can y
o
u see t
h
e n
o
rmal
w
a
v
e
form?
NO
You should check po
w
e
r
line
& IIC li
nes.
YES
You should replace TUNER.
NO
A
ft
e
r checking
v
ideo signal line & the Pow
e
r of
LPF y
o
u should
decide to replace item or not.
NO
A
ft
e
r ch
ec
kin
g th
e Po
w
e
r of L
P
F y
ou sh
ou
ld
decid
e to
replace L
P
F
o
r n
o
t.
This board ha
s big
problem
because Main chip(BCM3553) ha
v
e
some troubles.
A
ft
e
r ch
ec
kin
g th
orou
ghly
all p
a
th
once ag
ain
, You
sho
uld d
ecid
e
to rep
lace BCM
3553 o
r n
o
t.
YES
YES
NO
Check all po
w
e
r domain of
FRC-9459M (IC1000)
(3.3V, 1.3V_C
ORE,1.3V_PL
L,3.3V,1.8V,2.5V)
& cr
y
s
tal output (X1000 / 20.25MHz)&FR
C_RESET
Measure Po
w
e
r &
w
a
v
e
for
m
at L1008,L1007,L1002,L1013,
L
1014,L
101
5~
L
1018&
C10
06
&R10
29
becau
se it
ís more easy
to
check.
Can y
ou see t
h
e n
o
rmal
w
a
v
e
form?
YES
This board ha
s big
problem
because FRC chip(FRC-9459M) hav
e
some troubles.
A
ft
e
r checking thoroughly
all path
once
again, You should decide
to replace
FRC-945
9M.
A
lthough y
ou
replace it, y
ou cannot see normal display
, decide to replace
Main chip(BC
M3553)
YES
TA/CATV
C
2008
- 20 -
Check JK701, JK707
Can y
o
u see t
h
e n
o
rmal
w
a
v
e
form?
NO
JK701,JK707
may
ha
v
e
pro
b
lem. Replace this Jack.
Check the input (Pin
A
N
17,A
M
1
9) of BCM
3553(IC100).
Measure
w
a
v
e
form at C651,
C652 b
e
c
a
use
it
ís mo
re eas
y
to
ch
eck.
Can y
o
u see t
h
e n
o
rmal
w
a
v
e
form?
NO
YES
This board ha
s big
problem
because Main chip(BCM3553) ha
v
e
some troubles.
A
ft
e
r ch
ec
kin
g th
orou
ghly
all p
a
th
once ag
ain
, You
sho
uld d
ecid
e
to rep
lace BCM
3553 o
r n
o
t.
Check all p
o
w
e
r d
o
main
o
f
FRC-945
9M (IC100
0)
(3.3V, 1.3V_C
ORE,1.3V_PL
L,3.3V,1.8V,2.5V)
& cr
y
s
tal output (X1000 / 20.25MHz)&FR
C_RESET
Measure Po
w
e
r &
w
a
v
e
for
m
at L1008,L1007,L1002,L1013,
L
1014,L
101
5~
L
1018&
C10
06
&R10
29
becau
se it
ís more easy
to
check.
Can y
ou see t
h
e n
o
rmal
w
a
v
e
form?
YES
This board ha
s big
problem
because FRC chip(FRC-9459M) hav
e
some troubles.
A
ft
e
r checking thoroughly
all path
once
again, You should decide
to replace
FRC-945
9M.
A
lthough y
ou
replace it, y
ou cannot see normal display
, decide to replace
M
a
in
c
h
ip
(B
C
M
3553
)
YES
AV
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