Manual Reparacion Pdp42
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Transcript of Manual Reparacion Pdp42
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anua eparac n a
nivel componente (Troubleshooting)
. .
.
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Caractersticas circuitos DriverCaractersticas circuitos Driver
Descripcin por mdulosDescripcin por mdulos
.SMPS(Fuente a alimentacin)
Es la encargada de proveer tensin y corriente a todos los circuitos.
.
Encargada de dar las seales provenientes de la placa lgica travs de los switch FETs
a los electrdos X.
.PLACA Y Main
Encargada de dar las seales provenientes de la placa lgica travs de los switch FETs
a los electrdos Y..LOGIC MAIN BOARD
Encargada de procesar la seal de la imagen que ser mostrada en la pantalla creandolas seales para las placas X-Y Main
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Descripcin por mdulosDescripcin por mdulos
.LOGIC BUFFER(E,F,G)
La seal proveniente de la placa lgica es guardada y pasa a los ICs de.
.Y-BUFFER (Upper,Lower)
Circuitos encargados de dar al panel de PDP los direccionamientosY provenientesde la placa lgica, consisten en dos placas. (upper y lower board).
.AC Noise Filter
Filtro para prevenir los ruidos de baja frecuencia que provienen de la red elctrica.
.COF (Chip on Flexible)
Son ICs montados en el conector flexible del panel y encargados de dar los
- 4 -
direccionamientos correctamente a los electrdos del panel. (STV7610A :96 Pin)
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42"s1.0 (PAL PDP)
1. Outline of troubleshooting
Contents
2. Troubleshooting procedure according to defect.
2-1. No-Power
2-2. No-Video
- .
2-4. Sustain Open2-5. Sustain Short
2-6. Abnormal Sustain
2-7. Address Open
2-7-1. R_Data Address Open
2-7-2. G_Data Address Open2-7-3. _ ata ress pen
2-7-4. Block Address Open
2-8. Address Short
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1. Outline of Troubleshooting This chart contains abnormal conditions happened PBA of 42" module (PAL)
on on ame escr p on e a e oar
No-power Operating Voltages don't exit AC FILTER, SMPS No-video Operating Voltages exit, but an image doesn't exist Y-MAIN, X-MAIN, Main-Logic
Abnormal video Abnormal image is on Video(except abnormality in sustain or address)
Y-MAIN, X-MAIN, Main-Logic
Sustain Open some horizontal lines don't exist on Video Y-Buffer, X, Y FPC Sustain Short some horizontal lines appear to be linked on Video Y-Buffer, X, Y FPC Abnormal Sustain Abnormal condition on horizontal lines
(except abnormality of Sustain Open or Short)Y-MAIN, Y-Buffer
Address Open some vertical lines don't exist on Video Main-Logic, Logic buffer, FPC, COF Address Short some vertical lines appear to be linked on Video Main-Logic, Logic buffer, FPC, COF Abnormal Address Abnormal condition on vertical lines Main-Logic, Logic buffer, FPC, COF
You should learn PBA analysis manual to be familiar with PBA specification andoutput waveform, before you learn Troubleshooting.
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Factores necesarios para el funcionamiento-Alimentaciones
Vs : 85V - Sustain
~ -
Ve : 110V - Ve bias (Vb in P4)
Vscan : 70V ~ 80V - Scan bias
Vdd : 3.3V - Logic signal buffer IC
Vcc : 15V - FET Gate drive IC
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Logic Signal - Suministrada por la placa lgica
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Troubleshootin fuente de alimentacinTroubleshootin fuente de alimentacin
Power ONComprobar cable
STB_5V NG Comprobar IC2,D28
OK
OK
PFC Comprobar IC1,Q1,Q2
OK OK
PFC
OK OKNG IC35Comprobar
PFC NG IC7Comprobar
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Troubleshooting fuente de alimentacinTroubleshooting fuente de alimentacin
VS NGVS ,
OK
VscanVE,Vset IC16, IC17, IC18Comprobar
OK
Comprobar otra placa ( Placa de imagen o Placa Driver ) O el cable
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2. Troubleshooting Procedure in abnormal conditions
2.1 No-power ( Operating Voltages don't exist )
AC Power CordNG connect
OK
AC Noise
Filter
Check CN8702/2pin
connector(220Vac)
NG AC Noise
Filter
Fuse(F8701,8702) is open?
If fuse is opened, replace Fuse
Choke(L8704) is miss-oriented?
OK
SMPS
Check CON8002/2pin
connector (220Vac)
NG AC Cable is open?
If fuse is opened, replace Fuse
OK
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continued
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- '
SMPS
.
NGON/OFF Relay(RLY8001, 8002) act?
LED(Green)
8001,8002,8003 act?
NGreplace SMPS
OK
NGSMPS
ec 5 5 c rep ace
OK
NGVa
Open Logic Buffer
connector (LP1/5pin)
Check OVP,OCP
NGSMPS
put out LED8004(RED)
Protection?
Protection failure
SMPS (Shutdown)
Check(Vs,Va,V5(D)
V5Open Logic main
connector (LD1/4pin)
Check OVP,OCP
Replace the
Board and
Re-check
NG
OKVs
Open Y-Main connector
(CN5008/13pin)
Check OVP,OCP
Check SMPS output NG
Vs
Open X-Main connector
(CN4004/13pin) Open
Check OVP,OCP
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Voltages
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2.2 No Video (Operating Voltages exist, but an image doesn't exist on Video)
This abnormal condition is related with Y-main, X-main, Logic Main and so on.
,
the causes of failure in each board.
No-Vodeo
[ Logic Main ] [ Y-MAIN ] [ X-MAIN ]
LED(2000) Sink Signal
blinks?
Check Scan Buffer
output waveform
Y-buffer's Out34
Check X-out 1, 2
waveform
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2.2 No Video (Operating Voltages exist, but an image doesn't exist on Video)
[ Y-MAIN ]
Check waveform of
Y-Buffer Output 3, 4
In checking input or output pins,Check "No-solder/Cold solder/Lead bent" on the Connector Leader.
CN5406,5506(13pin) NG
IC5005 /7404
Check out-signal
pin(2.4.6.8.10.12)
IC5006.5007/LV244
Check out-signal
pin(3.5.7.9.12.14.16.18)
CN5002/Con_30pin
Check out-signal
pin(2.4.5.8.9.12)
OK OKY-Buffer
Check STV7617
Logic Signal.
NGY-MAIN Y-MAIN Y-MAIN
Replace IC, after
Pin Short/OpenNG
OK OK
NG NG
OK
CN5404,5405,5506,
5505(12pin) NGY-MAIN
M5003/IRF540A
Check FET/GATE waveform
OKY-MAIN
R5008/4.7
Check Vscan Voltage(75Vdc)
OKY-MAIN
_
Check Vscan Voltage(75Vdc)
of input 5 pin
-
(Out' L,H)
NGReplace FET
OK
NGY-MAIN Y-MAIN Y-MAIN
OK OK
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Y-MAIN
Normal state
_
Check (Yrr.Yr.Yfr.Yf.Ys.
Yg.Yp)
_
Check input signals pin
(21.22.24.25.28.29.30)
_
Check Voltages(Vdd.Vcc.Vset.Vs)
pin of input (1.3.7.11.12.13)
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. o eo pera ng o ages ex s , u an mage oesn exs on eo
[ X-MAIN ]
Check X-Out 1,2
Waveform
In checking input or output pins,Check "No-solder/Cold solder/Lead bent" on the Connector Leader.
NGS/W_FET/GATE waveform
IC4005 /74HC08
Check out-signals pin
(3.6.8.11)
OK
CN4005/Con_13pin
Check input-Logic signals
pin(2.4.6.8.10.12)
OK
CN4004/Con_12pin
Check Voltages(Vdd.Vcc.Ve.Vs)
of input-pin(1.3.5.10.11.12)
X-MAIN
NGCheck (Xrr.Xr.Xf.Xs.Xg.)
-
X-MAIN
OK -X-MAIN
Replace IC, after checkNG
OK -X-MAIN
CheckNG
Check FET
If it is failed, replace it
NG
out-Voltages &
harness(SMPS)
OK
NG
-
-
IC4007,4006,4001/IR2110S
Check input-pin(12.14)
OK
-X-MAIN
IC4007,4006,4001/IR2110S
Check output-pin(12.14)
Check pin
Open/Short
Replace IC
NG Check pin
Open/Short
Replace IC
NG
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Normal state
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2.2 No Video O eratin Volta es exist but an ima e doesn't exist on Video
[ Logic Main ]
LED(2000) blinks?
(action of Sink Signal)
In checking input or output pins,Check "No-solder/Cold solder/Lead bent" on the Connector Leader.
NG
LD1 / 4pin NGSMPS
Check SMPS out-Voltages ( 5Vdc)
'LogicMain
-Check connector's
operating Voltages(5Vdc)
-Fuse open?
Fuse(FU2021,2002) open?
replace it
miss oriented / missing / wrong component
NG
Check the internal(2E00)
/external(2E01) state
on Ke scan Table
LogicMain
NGKeyscan Table Adjustment
After select 2E00(internal)/2E01(external),
Check 2081 of (F/W) pattern
OK
LogicMain
IC2037(3.3Vdc)
IC2036(2.5Vdc)
Check Regulator IC output
NG Check in-Volt (5V, 3 pin) andout-Volt(pin 2)
Replace it
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OK
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2.2 No Video (Operating Voltages exist, but an image doesn't exist on Video)
OK
Check Oscillator Output
X2002(60MHz) in3 NG Check operating NG NG Check operating of
In checking input or output pins,Check "No-solder/Cold solder/Lead bent" on the Connector Leader.
LogicMain
X2004(40MHz) pin3
X2003(28.636MHz) pin3
NGin-Voltage
(3.3Vdc)10uH's operating
OK OK
NGIC2037/out-pin2
and pattern
ep ace e ecte
Oscillator
Replace
defected Coil
Logic
Check Generator Output
F1,F2,256K
NG Replace defectedF1,F2,256K
OK
LogicMain
Check Reset Signal
IC2004 pin58
NG Check in-voltage(3.3VdcCheck component's Open/Short
OKLo ic Main
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Normal state
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. ,
This abnormal condition is related with Y-Main, X-Main, Logic Main and so on.
This page shows you how to check the boards, and the following pages show you how
o n e causes o a ure n eac oar
[ Logic Main ][ Y-MAIN ]
[ X-MAIN ]
Check Data, Control Line's
Open/Short
Check Y-buffer Output Waveform,
Scan Output Waveform,
and, Control Signal(Open/Short)
Check Control Signal
(Open/Short)
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2.3 Abnormal Video Abnormal ima e is on Video exce t abnormalit in Sustain or Address
[ Y-MAIN ]
Check Y-buffer Output,
Scan Output Waveform
In checking input or output pins,Check "No-solder/Cold solder/Lead bent" on the Connector Leader.
,
IC5005 /7404
Check Out-signal
pin(2.4.6.8.10.12)
IC5006.5007/LV244
Check Out-signal
pin(3.5.7.9.12.14.16.18)
CN5002/Con_30pin
Check In-signal
pin(2.4.5.8.9.12)
Y-Buffer
CN5406,5506(13pin)
Check Logic Signal
of STV7617
NGY-MAIN Y-MAIN Y-MAIN
Check pin
OK OK
Check PinNG NG
OKpen or
Replace IC
-
M5003 Gate NGY-MAIN
Check Scan In-Voltage
Open/Short
Replace it
Waveform
OK
.
Replace
FET(IRF540A)
NG
VR5001 5002,
Check slope Waveform
of Rising/Falling
Y-MAIN
NGAdjust the slope
OK
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Y-MAIN
Normal state
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. ,
[ X-MAIN ]
Check Control Signal
In checking input or output pins,Check "No-solder/Cold solder/Lead bent" on the Connector Leader.
-
Check discharge state of ERC circuit
(Lead Open / Missing component RepairG C4052.4051.4050.4049)
OK
NGX-MAIN
VR4001
Check Slope Waveform
of Rising Ramp
Adjust the slope
-
OKCN4004/Con_12pin
Check In-voltage(Vdd.Vcc.Ve.Vs)NG Check operating
Voltage specof pin (1.3.5.10.11.12) Adjust
OK
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X-MAIN
Normal state
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. ,
[ Logic Main ]
Check Data,
Control Signal
In checking input or output pins,Check "No-solder/Cold solder/Lead bent" on the Connector Leader.
Check Oscillator Output
and waveform of NG NG NG Check o eratin offrequency modulationX2002(60MHz) pin3
X2004(40MHz) pin3
X2003(28.636MHz) pin3
LogicMain
NGVoltage(3.3Vdc) of Coil 10uH
OK
Replace defected
OK
NGIC2037/out-pin2
and pattern
OK Oscillator defected CoilCheck Generator Output
F1,F2,256K
LogicMain
NG Replace defectedF1,F2,256K
OK
LogicMain
Check Generator Output
IC2001/240pin Solder
(cold solder/solder short)
RepairG
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OK
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2.3 Abnormal Video (Abnormal image is on Video, except abnormality in Sustain or Address)
OK In checking input or output pins,
Check "No-solder/Cold solder/Lead bent" on the Connector Leader.
LogicCheck Delay Controller Output
IC2002/240pinNG
Repair
OK
a nco so er so er s or
OK
LogicMain
Check Data Memory ControllerOutput
IC2005.2006.2007.2008/100pin
NGRepair
OKLogic Main
Normal State
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'.
[ Y-FPC ]
Sustain Open
In checking input or output pins,Check "No-solder/Cold solder/Lead bent" on the Connector Leader.
Y-FPCNGCheck FPC(80pin) Output Check FPC(80pin) connector
OKRepair /
Replace connector
NG
'
Y-Buffer
Check Connector(80pin)
Output
(CN5401.5402.5403.5501
.5502.5503)
NG (cold solder, no solder, lead bent,lead contact, foreign substance )
Repair / Replace ConnectorNG
OK
Y-Buffer
Check Scan Driver IC/ 100pin
Output
Upper(IC5401.5402.5403.5404)
NG Check Scan Driver IC/ 100pin(cold solder, solder short, lead bent)
Lower(IC5501.5502.5503.5504)
Repair / Replace ICNG
To check IC failure
-raise IC Output Lead form PCB pad and check the Output Lead
OK
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waveform
-In case of IC failure, replace the IC.
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2.4 Sustain Open (some horizontal lines don't exist on Video)
OK In checking input or output pins,Check "No-solder/Cold solder/Lead bent" on the Connector Leader.
Y-Buffer
Check PCB pattern Open/Short
between connector(80pin)'s
pattern and IC Output pattern
NGReplace Board
OK
CN5406 5506 13 in
IC5005 /HC7404
Check Out-signal
pin(2.4.6.8.10.12)
IC5006.5007/LV244
Check Out-signal pin
(3.5.7.9.12.14.16.18)
CN5002/Con_30pin
Check In-signal
pin(2.4.5.8.9.12)
Y-Buffer
,
Check Input-Logic signal
of STV7617
NGY-MAIN Y-MAIN Y-MAIN
Check pinNG
OK OK
Check pinNG NGOKOpen/Short
Replace It
Open/Short
Replace It
[ Y-Buffer/Y-MAIN ]
Check contact state ofconnector 5406,5506 an
CN5001,5003
(pin Short/Open)
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2.5 Sustain Short (some horizontal lines appear to be linked on Video)
[ Y-FPC ]
Sustain Short
In checking input or output pins,Check "No-solder/Cold solder" on the Connector Leader.
Y-FPCNG
Check FPC(80pin)'s Output
Check FPC(80pin) Connector
(Solder short /
OKRepair / Replace Connector
NG
Y-Buffer
Check output of
connector(80pin)
(CN5401.5402.5403.5501
.5502.5503)
NGec onnec or
(Solder short /
conductive substance)
Re air / Re lace ConnectorNG
OK
Y-Buffer
Check Scan Driver IC/ 100pin
Output
Upper(IC5401.5402.5403.5404)
NG Check Scan Driver IC/ 100pin(Solder short /conductive substance)
Lower(IC5501.5502.5503.5504)
Repair / Replace ICNG
To check IC failure
-raise IC Output Lead form PCB pad and check the Output Lead
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waveform
-In case of IC failure, replace the IC.
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[ Y-Buffer ]
Abnormal Sustain
.
In checking input or output pins,Check "No-solder/Cold solder" on the Connector Leader.
Y-Buffer
Check connector (80pin)
Output Waveform NGCheck Scan Driver IC/ 100pin Output
Upper(IC5401.5402.5403.5404)
Lower(IC5501.5502.5503.5504)
5401.5402.5403.5501
.5502.5503)
Check Input-Logic signal of
NG
Repair / Replace IC
To check IC failure : raise IC Output Lead form PCB pad and
check the Output Lead waveform
-In case of IC failure, replace the IC.
Y-Buffer
Scan Driver IC/ 100pin
Upper(IC5401.5402.5403.5404)Lower(IC5501.5502.5503.5504)
OK
NG
Check Input-Logic NG
IC5005 /7404
Check out-Signal
pin(2.4.6.8.10.12)
IC5006.5007/LV244
Check out-Signal
pin(3.5.7.9.12.14.16.18)
CN5002/Con_30pin
Check in-signal
pin(2.4.5.8.9.12)
OK OKY-Buffer
Signal of CN5406,
5506(13pin) STV7617
NGY-MAIN Y-MAIN Y-MAIN
Check Pin
O en/Short
NG
OK OK
Check Pin
O en/Short
NG NG
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Replace IC Replace IC
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2.7 Address O en some vertical lines don't exist on Video
This abnormal condition is related with Logic Main, Logic Buffer, FPC, COF and so on.This page shows you how to check the boards, and the following pages show you how to find the causes
Address Open
.
Address Open R_Data Address Open G_Data Address Open B_Data Address Open Block Address Open
[ COF ]
Check Address Output
Signal (384LINE)
[ Logic Main / FPC ]
Check Data / Control
Output Waveform
[ Logic Buffer ]
Check Data / Control
Output Waveform
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2.7.1 R_Data Address Open (Red Cell vertical lines don't exist on Video)
[ COF ]
Address Open
In checking input or output pins,Check "No-solder/Cold solder/Lead bent" on the Connector Leader.
Check Address Open. NG COF Module'sCheck R_DATA Connector80pin Output
COFLine under 96 among 384
lines open?
NGFailure
OK Check Input signal pin
80pin OutputEL1 EL2
EC1_Block 75.72.67.64
EC2 Block 59.56.51.32OK
LogicBuffer
Check Output Signal pin
(16.9.)
VHCT244 (IC2602.03.08.05.
07.06.09.00.IC2700.01.05.
NG LogicBuffer
NG
(4.11) of VHCT244EC2_Block
EC3_Block 27.24.19.16
EC4_Block 11.8. 75.7202.04.03)
Check pin
Open / Short
Replace it
OK
OKFE1 EF1 EL2
FC5_Block 74.73.66.65
7.8.
15.1667.64.59.56
LogicBuffer
/80pin Output Signal
pin(13.16.49.52)
NG ec p n pen ortCheck contact and aligned state
of COF Connecting FPC
FC6_Block 58.5726.25
23.24
55.5651.32.27.24
FC7_Block 18.17.10.9
63.64
71.7219.16.11.8
OKReplace defected COF module
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2.7.1 R_Data Address Open (Red Cell vertical lines don't exist on Video)
In checking input or output pins,Check "No-solder/Cold solder/Lead bent" on the Connector Leader.
_ -
LE01 Output-pin Input-pin
EC1_Block 6.9.14.17
IC2031 IC2030 IC2031 IC2030
3.9.16 5 17.11.4 15
OK
EC2_Block 22.25.30.49IC2030 IC2029 IC2030 IC2029
12.18. 7.14 8.2 13.6
EC3_Block 54.57.62.65IC2028 IC2027 IC2028 IC2027
3.9.16 5 17.11.4 15
Check Output Signal
of Logic Main Control
EC4_BlockLE01 LE02 IC2027 IC2026 IC2025 IC2027 IC2026 IC2025
70.73 6.9 12.18. 16 5 8.2 4 15
FC5_Block14.17
22.25
IC2025 IC2024 IC2025 IC2024
12.18. 7.14 8.2 13.6
FC6_Block 30.49
54.57
IC2023 IC2022 IC2023 IC2022
3.9.16 5 17.11.4 15
FC7_Block62.65
70.73
IC2022 IC2021 IC2022 IC2021
12.18. 7.14 8.2 13.6
Check pin
Open / Short / Bent
NG
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ep ace
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2.7.2 G_Data Address Open (Green Cell vertical lines don't exist on Video)
[ COF ]
Address Open
In checking input or output pins,Check "No-solder/Cold solder/Lead bent" on the Connector Leader.
Check G_DATA Connector
80pin OutputCheck Address Open. NGEL1 EL2
EC1_Block 74.71.66.63
EC2_Block 58.55.50.31
COFLine under 96 among 384
lines open?
NGCOF module
OK Check each In-signal
EC3_Block 26.23.18.15
EC4_Block 10.7 74.71
LogicBuffer
Check Output-signal pin
(14.7)VHCT244(IC2602.03.08.05.
07.06.09.00.IC2700.01.05.
NG LogicBuffer
NG
.
FE1 EF1 EL2
FC5_Block75.70.
67.62
6.11.
14.1966.63.58.55
59.54. 22.27.
. .Check pin
Open / Short
Replace it
OK
OK
Check COF Connector / NG Check pin Open/ShortFC6_Block
27.22 54.5950.31.26.23
FC7_Block19.14.
11.6
62.67.
70.7518.15.10.7
LogicBuffer
80pin Output-signal pin
(14.17.50.53)
NGCheck contact and aligned state
of COF Connecting FPC
OK
OKReplace defected COF
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OK
. . _ a a ress pen reen e ver ca nes on ex s on eo
In checking input or output pins,Check "No-solder/Cold solder/Lead bent" on the Connector Leader.
_ - ec og c a n u pu
LE01 output-pin Input-pin
EC1_Block 7.10.15.18
IC2031 IC2030 IC2031 IC2030
5.12.18 7 15.8.2 13.
EC2_Block 23.26.31.50IC2030 IC2029 IC2030 IC2029
14. 3.9.16 6 17.11.4
EC3_Block 55.58.63.66IC2028 IC2027 IC2028 IC2027
5.12.18 7 15.8.2 13.
Control Output Signal
EC4_BlockLE01 LE02 IC2027 IC2026 IC2025 IC2027 IC2026 IC2025
71.74 7.10 14. 3.18 7 6. 17.2 13
FC5_Block15.18
23.26
IC2025 IC2024 IC2025 IC2024
14 3.9.16 6 17.11.4
6_ oc 31.50
55.58
IC2023 IC2022 IC2023 IC2022
5.12.18 7 15.8.2 13.
FC7_Block63.66.
71.74
IC2022 IC2021 IC2022 IC2021
14. 3.9.16 6 17.11.4
Check pin
Open / Short / Bent
NG
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2.7.3 B_Data Address Open (Blue Cell vertical Lines don't exist on Video)
[ COF ]
Address Open
In checking input or output pins,Check "No-solder/Cold solder/Lead bent" on the Connector Leader.
Check B_DATA Connector
80pin Output
Check Address Open.
Line under 96 among 384 NGEL1 EL2
EC1_Block 73.70.65.62
EC2_Block 57.54.49.30
COFnes openNG
Check COF's failure
OK Check input pin VHCT244
EC3_Block 25.22.17.14
EC4_Block 9.6 73.70
LogicBuffer
Check out-pin(12.5)
VHCT244(IC2602.03.08.05.07.06.09.00.IC2700.01.05.
02.04.03)
NG LogicBuffer
NG
.
FE1 EF1 EL2
FC5_Block72.71.
64.63
9.10.
17.1865.62.57.54
FC6 Block 56.55. 25.26.
ec n
Short/Open
Replace IC
OK
OK
NG Check pin Open/Short _ . .24.23
. .
57.5849.30.25.22
FC7_Block16.15.
8.7
65.66.
73.7417.14.9.6
OK
LogicBuffer /80pin Out-signal pin
(15.18.51.54)
NGCheck contact and aligned state
of COF Connecting FPC
OKReplace defected COF module
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OK
2.7.3 B_Data Address Open (Blue Cell Vertical lines don't exist on Video)
In checking input or output pins,Check "No-solder/Cold solder/Lead bent" on the Connector Leader.
ec _ og c- a n u pu
LE01 Output-Pin Input-Pin
EC1_Block 8.11.16.19
IC2031 IC2030 IC2031 IC2030
7.14 3.9. 13.6 17.11
EC2_Block 24.27.32.51IC2030 IC2029 IC2030 IC2029
16. 5.12.18 4. 15.8.2
EC3_Block 56.59.64.67IC2028 IC2027 IC2028 IC2027
7.14 3.9 13.6 17.11
Check Control Out-signal
of Logic-Main
EC4_BlockLE01 LE02 IC2027 IC2026 IC2025 IC2027 IC2026 IC2025
72.75 8.11 16. 5 3.9 4. 15 17.11
FC5_Block16.19
24.27
IC2025 IC2024 IC2025 IC2024
16. 5.12.18 4. 15.8.2
FC6_Block 32.51
56.59
IC2023 IC2022 IC2023 IC2022
7.14 3.9 13.6 17.11
FC7_Block64.67
72.75
IC2022 IC2021 IC2022 IC2021
16. 5.12.18 4. 15.8.2
Check Pin
Short/Open/BentNG
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. . oc ress pen Block vert ca nes ont ex st on eo
[ COF ]
Address Open
Check current R(2.2) of LogicCheck Va-input Voltage
"
Check Logic buffer/3pin
In checking input or output pins,Check "No-solder/Cold solder/Lead bent" on the Connector Leader.
LogicBuffer
NG LogicBuffer
OK
Resister is open?
Check COF connector
/80pin
Va Out-Volt. 75Vdc in
Logic
Buffer
LP1 Connector
Logic
Buffer
OK
oriented/contact state
-Check out-voltage of SMPS
-Check Protection of SMPS
-Filter Cap of Logic Buffer
is miss-oriented?
NG(9.10.35.36.45.46.71.72)
Replace Resistor
NG
NG
OK Check Pin open/short?Check contact & aligned state
of COF connecting FPC
Check Out-signal pin(18.3)Check input-signal pin
VHCT244(IC2602.03.08.05.
07.06.09.00/IC2700.01.05.
02.04.03
Check Out-Signal Pin(14)
LogicBuffer
NG LogicBuffer
NG
(2.17) of VHCT244
, , ec n s or open
Replace IC
OK
LogicBuffer
Check Out-signal pin
of COF connector /80pin
(19.20.24~27.31.32
55.56.60~63.67.68
NG Check pin Open/ShortCheck contact and aligned state
of COF Connectin FPC
OK
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OK Replace defected COF module
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Checck Connector 80pin / IC OutputNG
2.7.4 Block Address Open (Block vertical lines don't exist on Video)
In checking input or output pins,Check "No-solder/Cold solder/Lead bent" on the Connector Leader.
_
F Buffer E Buffer
FE1 EF1IC2604
(Output)
IC2604
(Input)EL1
EC1_Block 18 2
Check Pin
Short/Open/bent?
Replace IC
NG
_
46
EC3_Block
EC4_Block16 4
FC5_Block
FC6_Block 32 49 14 6
FC7_Block
OK
Check Connector 80pin / IC Outputof CONTROL_DATA(POL)
F Buffer E Buffer
FE1 EF1(Output) (Input)
EL2
EC1_Block
EC2_Block18 2
EC3_Block 16 4
Check Pin Short/
Open/Bent
Replace IC
NG
46EC4_Block
FC5_Block
FC6_Block
FC7_Block
46 35 14 6
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OK
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2.7.4 Block Address Open (Block Vertical lines don't exist on Video)
Check Connector 80pin / IC Output
OK
o L_
F Buffer E Buffer
FE1 EF1IC2604
(Output)
IC2604
(Input)EL1
EC1 Block
Short/Open/bent?
Replace IC
NG
_
EC2_Block7 13
35
EC3_Block
EC4_Block5 15
FC5_Block
Check Connector 80pin / IC Output
of CONTROL_DATA(BLK)
_ oc
FC7_Block
35 46 3 17
OK
FE1 EF1IC2601
(Output)
IC2601
(Input)EL2
EC1_Block
EC2_Block
7 3
35
EC3_Block
EC4_Block5 15
FC5_Block
FC6_Block 49 32 3 17
Check Pin
Short/Open/bent?
Replace IC
NG
- 35 -
_
OK
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'. .
OKec on ro u pu - gna
of Logic Main
Check CONTROL_DATA Logic Main OutputCheck Pin
Short/Open/bent?NG
LE01 LE02IC2026
(Output)
IC2026
(Input)
CLK 35 7 13
Replace IC
STB 46 9 11
POL 35 12 8
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.
[ COF ]
Address Short
In checking input or output pins,Check "No-solder/Cold solder/Lead bent" on the Connector Leader.
Check Output of R.G.B_DATA
Connector 80pinCOF
Check Address Open.
Line under 96 among 384 NG Check COF failureEC1_Block
75~70(RGB)
67~62(RGB)
EC2_Block59~54(RGB)
51~49/32~30
lines open?
OK-
Check Input-signal pin of
VHCT244 (4.6.8.11.13.15)
EC3_Block27~22(RGB)
19~14(RGB)
EC4_Block 11~6(RGB) 75~70(RGB)
FE1 EF1 EL2
LogicBuffer
-
(16.14.12.9.7.5) of
VHCT244(IC2602.03.08.05.
07.06.09.00.IC2700.01.05.
02.04.03)
NG LogicBuffer
OK
NG
FC5_Block75~70
67~62
6~11
14~19
67~62
59~54
59~54 22~27 51~49
Replace ICK
Logic
Check Output-Signal of
COF Connector / 80pinNG Check pin Open/Short
FC6_Block27~22 54~59
32~30
27~22
FC7_Block19~14
11~6
62~67
70~75
19~14
11~6
Buffer (13~18/49~54) of COF Connecting FPC
OKReplace defected COF Module
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2.8 Address Short some vertical lines a ear to be linked on Video
Check R.G.B DATA Lo ic-Main Out ut
In checking input or output pins,Check "No-solder/Cold solder/Lead bent" on the Connector Leader.
_
LE01 Output-pin Input-pin
EC1_Block 6~11/14~19IC2031 IC2030 IC2031 IC2030
1~20
~ ~
OK
EC2_Block49~51 1~20
EC3_Block 54~59/62~67IC2028 IC2027 IC2028 IC2027
1~20
LE01 LE02 IC2027 IC2026 IC2025 IC2027 IC2026 IC2025
ec u pu - gna
of Logic-Main
EC4_Block70~75 6~11 1~20
FC5_Block14~19
22~27
IC2025 IC2024 IC2025 IC2024
1~20
30~32 _ oc
49~51
54~59
2023 2022 2023 2022
1~20
FC7_Block62~67
70~75
IC2022 IC2021 IC2022 IC2021
1~20
Check Pin
Open / Short / Bent
NG
- 38 -
Replace IC
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2.9 norma ress norma con t on on vert ca nes, except a norma ty n ress pen or ort
[ COF ]
Abnormal Address
In checking input or output pins,Check "No-solder/Cold solder/Lead bent" on the Connector Leader.
Check Output-Signal pin
(18.3)
Check Input-Signal
pin(2.17) of VHCT244. . . .
07.06.09.00/IC2700.01.05.
02.04.03)
Check Output-Signal pin(14)
VHCT244(IC2661,62,IC2706)
LogicBuffer
NG LogicBuffer
NG
Check pin Open/Short
Replace IC
OK
Check Output-Signal pin
of COF Connector / 80pin
19 20 24~27 31 32
NG Check pin Open/Short
OK
Buffer
. . . .
55.56.60~63.67.68)ec con ac an a gne s a
of COF Connecting FPC
OK
Replace defected COF module
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2.9 Abnormal Address (Abnormal condition on vertical lines, exce t abnormalit in Address O en or Short)
Check CONTROL_DATA(CLK) Connector 80pin / IC output
NGCheck Control output-
Signal of Logic Buffer Check pinNG
In checking input or output pins,Check "No-solder/Cold solder/Lead bent" on the Connector Leader.
FE1 EF1IC2604
(Output)
IC2604
(Input)EL1
EC1_Block
EC2_Block18 2
Short/Open/Bent
Replace IC
NG
46
EC3_Block
EC4_Block16 4
FC5_Block
FC6_Block
FC7_Block
32 49 14 6
OK
_
F Buffer E Buffer
FE1 EF1IC2601
(Output)
IC2601
(Input)EL2
Check pin
Short/Open/Bent
Replace IC
NG
_
EC2_Block18 2
46
EC3_Block
EC4_Block16 4
FC5_Block
- 40 -
FC6_Block
FC7_Block
46 35 14 6
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OK
. norma ress norma con on on ver ca nes, excep a norma y n ress pen or or
_
F Buffer E Buffer
FE1 EF1IC2604
(Output)
IC2604
(Input)EL1
EC1_Block
heck pin
Short/Open/Bent
Replace IC
NG
_
EC2_Block
35
EC3_Block
EC4_Block5 15
FC5_Block
FC6 Block 35 46 3 17_
FC7_Block
OKCheck CONTROL_DATA(BLK) Connector 80pin / IC Output
F Buffer E Buffer
FE1 EF1IC2601
(Output)
IC2601
(Input)EL2
Check pin
Short/Open/Bent
Replace IC
NG
_ oc
EC2_Block7 3
35
EC3_Block
EC4_Block5 15
FC5_Block
- 41 -
FC6_Block
FC7_Block
49 32 3 17
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2.9 Abnormal Address (Abnormal condition on vertical lines, except abnormality in Address Open or Short)
OKCheck control Output-
Signal of Logic-Main
Check CONTROL_DATA Logic-Main Output
IC2026 IC2026
Check pin
Short/Open/Bent
Replace IC
NG
(Output) (Input)
CLK 35 7 13
STB 46 9 11
POL 35 12 8
BLK 46 14 6
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'-
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'-
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How to adjust waveform
Mainte-
nance
Mainte-
nance
Mainte-
nance
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dani
1. Y buffer- Para detectar si hay algn fallo en Y Main, comprobar antes el correcto funcionamiento de Y buffer.
rou es oo ng rcu os r verrou es oo ng rcu os r ver
- esconectar a n e u er,
- Comprobar en bornes OUTL and OUTH del diodo que haya una caida de tensin de 0,4 a 05V.
- Al mismo tiempo la resistencia entre esos puntos tiene que ser de alto valor (k).
OUT L OUT H
OUTLOUTH
OUTL
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2. Y Main
- Tras conectar Y Main con Y Buffer, com robar las salidas OUT1~8 de la Y buffer
rou es oo ng rcu os r verrou es oo ng rcu os r ver
OUT1 OUT2 You must check 1EA of Scan pul se i s out put
OUT4OUT3
OUT6 OUT5
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Troubleshootin Circuitos DriverTroubleshootin Circuitos Driver
3. X Main
- Comprobar si la salida TPOUT en la placa X Main
TPOUT
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1 2 3 4
42 SD 42 HD OL D
EXT INT
ON : UP
OFF : DOWN
SW1 : NT PAL UP : NT SC DOWN : PAL
SW2 : DATA UP : EXT DOWN : IN T
42 HD LVDS INTERFACE SETTI NG (7/29~)
IN T I/F EXT I/F
SW3 : IN T CLK UP : ON DOWN : OFF
SW4 : EXT CLK UP : ON DOWN : OFF
CAUTION !
50 & 63 H D
1 2 3 4 5 6
INT
ONOFF
INT PTN
PAL:ON
NT:OFF
CL K
INT:ON
EXT:OFF
I2C
K EY SCAN:ON
SCALER : OFF
EX T
ON
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- 52 -