LG 60PT100C-WA / 60PT100N (CHASSIS:PC11A) Service Manual ▷ View online
Replace Power board
N
Y
Check Micom Redownload or
replace
Check P500 All Voltage Level
(17V, 5V, 3.5/5V_ST)
Check Power connector
Y
Check Voltage Level 3.3V at IC505,
R124(Micom)
N
If Q500 Output is normal,
Replace of the IC505
& Recheck
Y
N
Check Voltage Level 1.26V at C542
N
Check R517 voltage level
(3.3V RL_ON)
Replace one of IC503 & Recheck
N
Y
Check R523 Voltage Level 1.5V
at IC501
N
Check R503 voltage level
(ON/OFF Control)
Replace one of IC501 & Recheck
N
Y
Check Voltage Level 2.5V at C566
N
Replace one of IC506 and application
circuit & Recheck
N
Y
Check X200 Clock24MHz
N
Replace X200
Y
Check signal transition
at IC103
N
Maybe Serial Flash Memory
problem
Check signal transition
IC104
Y
Check All Voltage Level
at Bead, RL_ON, IC500 output
N
Replace one of Bead, IC500
& Recheck
Y
N
Maybe NAND Flash Memory or S7
have troubles
Y
Check DDR Memory
/Replace one
Check S7 Main chip and Soc_Reset
Signal from micom GPIO
N
N
N
9-1. Power-Up Boot Fail Trouble Shooting
DDR3
256MB(128*2)
DDR3
256MB(128*2)
S7
S7
WXGA/XGA
LVDS
EXT_IN
HDMI
CVBS_LIVE
TP1
(System + Scalar)
NANDFlash
256MB
NANDFlash
256MB
USB2.0
SPDIF
SIF_LIVE
I2S_BCM
DVI
Serial_Flash
1MB
Serial_Flash
1MB
Reset
HDMI CEC (Stand-by)
IR
I2C
KIA7427AF
KIA7427AF
24C16
24C16
Local
Local
KEY
KEY
NEC
NEC
Micom
Micom
(Micom)
Rear(0)
I2S_BCM
TAS9709
TAS9709
(Audio Out)
(USB)
Rear USB( SVC only)
(External Input)
COMP_LR
PC_Audio
EXT_IN
(Comp, RGB)
DVI_IN
DVI_Rear
DVI_OUT
HDMI_Rear
HDMI_PORT1
HDMI_Rear
HDMI_PORT2
9-2. No OSD Trouble Shooting
Replace Power board
N
Y
Check 5V Voltage Level
at P500
Check Power connector
Y
Check 5V Voltage Level at Q500
N
Replace one of Q500
& Recheck
Y
Check P907
(TXAC-), (TXAC+), (TXBC-),
(TXBC+), Display Enable
N
Y
Check LVDS Cable
N
Replace Cable
Y
Check PDP Module
Check 5V Voltage Level
at L501, L504
N
Replace one of L501,L504
& Recheck
Y
Maybe S7(IC101)
has troubles
It should satisfy the
Pixel Clock
on CAS.
Electrical Specifications
Power Supply Sequence
Input Signal Timing Specification
Control Signal Register
Power Supply Sequence
Input Signal Timing Specification
Control Signal Register
Check CAS
Check P500
5V_ON
Check GPIO Path of Micom
N
Y
9-2. No OSD Trouble Shooting
msec
-
2000
Time interval between 10% of Vcc and 90% of Vcc
when Power On
T
OnR
msec
500
90
Falling Time of Vs (90% to 10%)
T
VsF
msec
-
3100
Time interval between 90% of Vs
and DISPEN rising edge when Power On
T
d_on
msec
6000
1500
Time interval between DISPEN falling edge
and 90% of Vs when Power Off
T
d_off
Recommended 2sec
msec
300
10
Rising Time of Va (10% to 90%)
T
VaR
msec
500
100
Rising Time of Vs (10% to 90%)
T
VsR
msec
500
50
Falling Time of Va (90% to 10%)
T
VaF
msec
-
20
Time interval between 10% of Vs and 90% of Vcc
when Power Off
T
Off
msec
1250
750
Time interval between 90% of Vcc and 10% of Vs
when Power On
T
On
unit
Max.
Min.
Description
Symbol
T
d_on
T
d_off
Normal Display
Vcc
(5V)
Va
Vs
DISPEN
T
VaR
T
VsR
T
On
T
VaF
T
VsF
T
Off
T
OnR
9-2.No OSD Trouble Shooting (Module Power Sequence)
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