1/40
1. Block Diagram of VSC main2. Block Diagram of STB main3. IC SPEC
2/40
MT-40PA10 VSC Board Block DiagramMT-40PA10 VSC Board Block Diagram
Chip for flat panel display applicationVGA XGA scale up/down
Display Processor & Scan Rate Converter(Format Converter)
Interlace to Progressive15KHz 31KHz(2H X 1V)
P101V/R/L
DS102
IC203VPC3230Decoder
80Pin
IC203VPC3230Decoder
80Pin
3
Y,Cb,Cr
CVBS(A)
1IC204
SDA9410Deinterlace &
D/A100Pin
IC204SDA9410
Deinterlace &D/A
100Pin
8 LU0-7
8 CHR0-7
IC303CXA2101AQ
Video&Chroma80Pin
IC303CXA2101AQ
Video&Chroma80Pin
5
PC-R/G/B/HS/VS (A)5
DTV-Y/Pb/Pr (A)
3 TV-Y/U/ V/HS/VS(A)
5
IC304THS8083100Pin
IC304THS8083100Pin
3 CXA-R/G/B(A )
IC401MX88L284
3X2M Scan converter
208Pin
IC401MX88L284
3X2M Scan converter
208Pin
IC001M37270
EEPROMMicro-Com
IC001M37270
EEPROMMicro-Com
IC4032M
SDRAM
IC4022M SDRAM
(R/G/B)(D)
CAX-HS/VS
2
16D0-16
A0-10 D16-3111 16
OSD_R/G/B/YS4
IC50174F541
IC50274F541
IC50374F541Buffer
OSD_HS/VS2
HS/VS_OUT
2
8 DOR0-7
8 DOG0-7
8 DOB0-7
STB-POWERVSC DET/POWERHDSTB_DETSTB_SCL/SDAANA_STB_DET
7 PVS/PHS_OUT2
PAR0-7
8
PAG0-7
8
8
PD501(41Pin)
PDP Module(D)
3X8
D-sub
25
D-sub
15
(A)
P601L/R
I²C
IC203,204,303,304,407
IC00224C16IC00224C16 IC407
SC786102DWIC407
SC786102DW
HS/VS
SDA2SCL2
DS101
STB-R/G/B/HS/VS(A)
IC50474F541
PAB0-7
Comb Filter Video ProcessCVBS(Composite Video Baseband Signal) Input to Y/C(Y,U,V) Output
Multi-Component Processor(Baseband Video Signal Processor)
STB, PC, DTV, TV signals Input to Analog R/G/B Output
Triple 8Bit, 80MSPS, 3.3V Video&Graphic Digitizerwith Digital PLL
Analog R/G/B Input to 3X8 Digital R/G/B OutputP102DVD
IC602CXA2022S
(Tone Control)
IC602CXA2022S
(Tone Control) 2 2L/R
IC604LA7222
(Audio S/W)
IC604LA7222
(Audio S/W)STB/PC/DTV1
AV/DVD/DTV2
2L/R
IC603LA4282
Audio Amp.(12Wx2)
IC603LA4282
Audio Amp.(12Wx2)
P007A(Spk. Jack)
L/R
3/40
RT- BA10 STB Main Block DiagramRT- BA10 STB Main Block Diagram
TUNER
(RCA JACK)
※ AUDIOCOMMON USE
L/R(TV)
L/R
IF ICTDA4474
DC5V
IF ICTDA4474
DC5V
SVHS
AV3
PC- IN
PC Audio(Stereo)
SCL-A
S DA -A
7input/3outputideband video Amp(20MHz, -3dB)
Y/C mix circuitA/V switch featuring I2C BUS
R/G/B/HS/VS(A) w
TUNER
CXA2069Q
A/V SW
DC 12V
CXA2069Q
A/V SW
DC 12V
V, L/R
CVBS
V, L/R
* SCART2 : HALF * RCA Jack
Common Use*PCB LayOut)
AV2
MNTOUT
V, L/R
TV, L/R
(SCART1: FULL)
TVOUT
AV1
Y / C
MSP3411G
SoundProcessor
DC 8V
MSP3411G
SoundProcessor
DC 8V
2’ndSIF
L / R OUT
CXA2101AQRGB
ProcessorDC9V
CXA2101AQRGB
ProcessorDC9V
R/G/BHS/VS(A)
DS 701(25PinCable)
SCL-A/DSDA-A/D
910
Multi-Com onent ProcessorAnalog R/G/B Output
Input select switch for high definition display
Internal broadband RGB s/w
2001.4.27 PHIL KIM
SCL-ASDA-AI2C P801
7PIN
IC 001M37272u-COM
IC 001M37272u-COM
KEY-1
KIN
KOUT
SCL-ASDA-A
PC- OUT
I 2C
RF
(RCA JACK)
L/R
CVBS1/Y
C TPU3052STELETEXT
DC5V
TPU3052STELETEXT
DC5V
VPC3230DMAIN
[ADDR: 47]Video
ProcessorDC 6V
VPC3230DMAIN
[ADDR: 47]Video
ProcessorDC 6V
C
DVD Y/Cr/Cb(A)
VPC3230DSUB
[ADDR: 44]Video
ProcessorDC6V
VPC3230DSUB
[ADDR: 44]Video
ProcessorDC6V
FB
SDA94101H/1V=> 2H/ 1VDW / PIP / MPIP
DC 3.3V
SDA94101H/1V=> 2H/ 1VDW / PIP / MPIP
DC 3.3V
p
DTV Y, Pb, Pr (A)
H V
CVBS2/Y
R/G/BHS/VS(A)
R/G/BHS/VS(A)
BA7657FRGBS/W
DC 5V
BA7657FRGBS/W
DC 5VI2CSCL-ASDA-AI2C
SCL-DSDA-DI2C
SCL-ASDA-A I2C
CVBS.3 RGB
EXT_RGB
81V04160FIFO
Memory
81V04160FIFO
Memory
WE
RE
DVD/DTV
Y/ C/HS/VS (D)
I2CSCL-DSDA-D
SCL-DSDA-D
I2C
Comb filter video processorTV Signal to Digital Y/Cr/CbMulti-standard color decoder
A/D converterFormat converter
Interlace to Progressive
7input/3outputwideband video Amp(20MHz, -3dB)
Y/C mix circuitA/V switch featuring I2C BUS
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VPC 3230 Comb Filter Video ProcessorVPC 3230 Comb Filter Video Processor
5/40
Description
The VPC3230xD/324xD is a high quality, single-chip video front-end, which is targeted for 4:3 and 16:9, 50/60 and 100/120Hz TV sets. It can be combined with other members of the DIGIT3000 IC family (such as DDP 33x0A/B, TPU 3040) and/or it can be used with 3rd-party products.
Features
Four CVBS, one S-VHS input, one CVBS output
Two RGB/YCrCb component inputs, one Fast Blank(FB) input
High-performance adaptive 4H comb filter Y/C separator with adjustable vertical peaking
Multi-standard color decoder PAL/NTSC/SECAM including all substandards
One 20.25MHz crystal, few external components
6V supply voltage
6/40
SDA9410 Display Processor & Scan Rate ConverterSDA9410 Display Processor & Scan Rate Converter
Description
The SDA 9410 is a new component of Siemens MEGAVISION IC set, which enables the system to reduce large area and line flickering of interlaced TV standards.
7/40
74F5413-state Buffer74F541
3-state BufferSDA9410Display Processor & Scan Rate Converter
Features
Digital interlaced Y/C input,
progressive analog Y/U/V output
High performance scan rate converter
4:2:2 luminance and chrominance
parallel (2x8 wires)
Scan rate conversion
- Motion compensated 100/120 Hz interlaced scan conversion
- Motion compensated 50/60 Hz progressive scan conversion
D/A converters
- 9 bit amplitude resolution for Y, -(R-Y), -(B-Y) output
3.3V + 5% supply voltage
DescriptionThe 74F541 are octal buffers that are ideal for driving bus lines or buffer memory address registers. The outputs are capable of sinking 64mA and sourcing up to 15mA, producing very good capacitive drive characteristics. The devices feature input and outputs on opposite sides of the package to facilitate printed circuit board layout.
FeaturesHigh impedance NPN base inputs for reduced loading (20uA in High and Low states)
Octal bus interface
3-state buffer outputs sink 64mA
15mA source current
8/40
THS8083 Video&Graphics Digitizer with Digital PLLTHS8083 Video&Graphics Digitizer with Digital PLL
9/40
Description
THS8083 is a complete solution for the digitalizing of video & graphic signals in RGB or YUV/YCbCr color spaces. The device supports pixel rates up to 80 MHz to 95 MHz, depending on the speedgrade of the device
Features
Three digitalizing channels, each with independently controllable Clamp, PGA and ADC
ADC: 8 bit 80MSPS
Support for 4:4:2 and 4:2:2 (ITU.BT-601 style output modes to reduce board traces and video ASIC’S
Fully integrates digital PLL(including loop filter) for pixel clock generation
3.3V supply voltage
10/40
CXA2101AQ Multi-Component Processor (Base Band Video Signal Processor IC)
CXA2101AQ Multi-Component Processor (Base Band Video Signal Processor IC)
11/40
Description
The CXA2101AQ is a bipolar IC which integrates the following functions on a single chip; base band signal processing, RGB signal processing , and video switching for 4 systems (including HV sync signal processing) using Y/Cb/Cr inputs.
It was developed for multiscan TVs, and enables high-end TV systems to be configured.
Features
On-chip video switching for 4 systems
Y/Cb/Cr input for one system, external Y/Cb/Cr input for 1 system
Analog RGB input for 2 systems
Normal, PAL-FF, HD-TV supported
9V supply voltage
12/40
MX88L284 Scan ConverterMX88L284 Scan Converter
Description
The MX88L284 is a highly integration chip for Flat Panel Display application. With Macronix’s Smartscaling – 2 filter, it provides high quality scaled video image and format conversion.
General features
Converts NTSC/PAL and PC video signal into flat panel display device timing and resolution.
13/40
Built-in OSD generator with 64 ROM fonts, and 64 programmable RAM fonts.
Support configurable SDRAM/SGRAM(x0 x1 and x2) for different resolution to minimize the system cost.
Input
PC Video up to 1024x768 @ 85Hz operation mode
Support YCrCb422,RGB888 mode (interlaced and Non-interlaced)
Support input H/V sync. Polarity and odd/even field detection
Support digital input capability
Support SDRAM/SGRAM x0x1 and x2 configuration
3.3V power supplier
Output
Support following resolution and frequency
Single (18/24) and Dual (36/48) bit RGB data output
Support OSD MUX capability for On-Screen-Display chip input
Built-in OSD generator
CPU Interface
Support direct 8 bit uP interface and serial bus (high-speed) interface
10825~8032.5~60Dot clock (MHz)
6050~7550~75Vertical frequency (Hz)
6420~7022~55Horizontal frequency
1280x10241024x768800x600 (SD)Resolution
14/40
SDRAM-KM416S1020CSDRAM-KM416S1020CDescriptionThe KM416S1021C is 16,777,216 bits synchronous high data rate
Dynamic RAM organized as 2 x 524,288 words by 16 bits, fabricated with high performance CMOS technology. Synchronous design allowsprecise cycle control with the use of system clock I/O transactions are possible on every clock cycle. Range of operating frequencies, programmable burst length and programmable latencies allow the same device to be useful for a variety of high bandwidth, high performance memory system applications.
FeaturesJEDEC standard 3.3V power supplySSTL_3 (Class II) compatible with multiplexed addressDual banks operationMRS cycle with address key programs- CAS latency (2 & 3)- Burst length (1, 2, 4, 8 & Full page)- Burst type (Sequential & Interleave)All inputs are sampled at the positive going edge of the system clock.Burst read single-bit write operationAuto & self refresh64ms refresh period (4K cycle)
15/40
CXA2022I2C Bus Sound Processor for TV
CXA2022I2C Bus Sound Processor for TV LA4282
2-channel 10w AF Power Amplifier for Use in Home Stereo, TV Applications
LA42822-channel 10w AF Power Amplifier
for Use in Home Stereo, TV Applications
Description
The CXA2022S is a bipolar IC designed as an IC bus control sound processor for TV.This IC has simulate stereo, surround, tone control, balance, volume, muting, AGC and other functions.
Description
The LA4282 is an IC which seals a high-output power amplifier for TVs and monitors in a compact package.
Features
Allows control I2c bus
Employs a special surround system to prevent “vocal missing” in the surround mode
Adopts an AGC circuit to absorb the difference in sound level between input sources and improves S/N ratio of hearing characteristics
14V supply voltage
Features
High-power 2-channel AF power amplifier
Low pop noise at the time if power supply ON/OFF
Good ripple rejection (58 db typ)
External muting available
16/40
CXA2069S2-Compatible 7-Input 3-Output Audio/Video Switch TDA4474
Multistandard Video-IF and Quasi Parallel Sound Processing
Description
The TDA4474 is an integrated bipolar circuit for full multistandardvideo/sound IF(VIF/SIF) signal processing in TV/VCR and multimedia applications. The circuit processes all TV video IF signals with negative modulation (e.g. B/Gstandard), positive modulation(e.g. L standard) and the AM, FM/NICAM sound IF signals.
Description
The CXA2069Q is a 7-Input 3-Output Audio/Video Switch featuring I2C bus compatibility for TVs. This IC has input pins that are compatible with S2 protocol. Features
Four IF inputs (2xVIFin and 2xSIFin)
Very linear video demodulation, good pulse response and excellent inter modulation figures
VIF-AGC for negative modulated signals(peak sync. detection) and for positive modulation(peak white/black level detector)
Alignment-free quasi parallel sound(QPS) mixer for FM/NICAM sound IF signals
5V supply voltage; low power consumption
Features
7 inputs 3 outputs
4 inputs that are compatible with S2 protocol
Wide band video amplifier (20 MHz,-3 dB)
Y/C MIX circuit
Serial control with I2C bus
High impedance maintained by I2C bus lines (SDA, SCL) even when power id OFF
12V Supply voltage
17/40
MSP 3411G Multistandard Sound Processor with Virtual Dolby SurroundMSP 3411G Multistandard Sound Processor with Virtual Dolby Surround
DescriptionThe MSP 34x1G family of single-chip Multistandard Sound Processors covers the sound processing of all analog TV-Standards worldwide, as well as the NICAM digital sound standards. The full TV sound processing, starting with analog sound IF signal-in, down to processed analog AF-out, is performed on a single chip.
The MSP4x1G has all functions of the MSP3401G with the addition of a virtual surround sound feature
18/40
MSP 3411GMultistandard Sound
Processor with Virtual Dolby SurroundFeatures
Four Stereo SCART (line) inputs, one Mono input; two Stereo SCART output
Complete SCART in/out switching matrix
Standard Selection with single I²C transmission
Two selectable sound IF (SIF) inputs
Automatic Sound Selection (mono/stereo/bilingual), new registers MODUS, STATUS
3D-panorama virtualizer(approved by Dolby Laboratories) with noise generator
AVC: Automatic Volume Correction
Demodulation of the FM-Radio multiplex signal
8V power supply
BA7657FInput selector switch for high definition displays
DescriptionThe BA7657F is for high definition displays, and have internal switches for switching between broadband RGB signals and HD/VD signals, as well as an internal synchronization separator. These ICS simplify the designing of input units for deluxe displays
Features
Internal broadband RGB switch (frequency characteristics : 250MHz, -3dB)
Internal HD/VD switch
Internal synchronization separator for synchronizing signals superimposed onto G signals.
5V power supply
19/40
Connection Diagram of MT-40PA10
6p X-B/D
POWER KEY
5V G 15V G N/C VA
CON304 6P
Angle - Type Wafer X-B/D
4p 9p
8P
41P
4PSPEAKER B/D
P8087P
P80912P
P8116P
P8104P
P8018P
P8066P
P802 4P P803 9P
P8056P
P8048P
P8076P
POWER
CN8012P
P004A7P
41P
P002A6P
P003A7P
P005A12PP006A
4P
P007A4P
VSCY-B/D
6p
8P
Z-B/D
Line FilterLine Filter
VA N/C G 15V G 5V
CON303 6P
7P CONTROL B/D
20/40
Pin Detail of MT-40PA10
KET-INR-LEDG-LEDGNDSTBYGNDTX
41P
PD501
SCL-ESDA-ESCL-NSDA-N
FSGND
P002A
6PIN
AC-DETRL-ONSTBYGND
VAVS-ON5V-MNT
N/C
5V5V5V
GNDGNDGND12V12VGNDGNDN/CN/C30V30V
GN
DG
ND
GN
DR
-SPKG
ND
L-SPK
P004A
7PIN
P003A
7PIN
P005A
12PIN
P007A
4PIN
P006A
4PIN
GN
DG
ND
VSC
VSE
TU
P
5V5V5V5V
GNDGNDGNDGND
VAN/CGND15VGND5V
32V32VGNDGND
5VS5VS5VSGNDGNDGND12V12VGNDGNDN/CN/C
ACDRLY5V
GNDVsON5VDN/C
VAN/CGND15VGND5V
VS
VS
N/C
N/C
N/C
GN
D5VG
ND5V
VAN/C
GND15V
GND5V
VAN/C
GND15V
GND5V
5VGND5V
GNDN/CVSN/C
GND
CN801 2P
P801
8P
P806
6P
P811
6P
P810
4P
P809
12P
P808
7P
P801
8PP801
8P
VSC
CNTL
P804
8P
P805
6P
P807
6P
VSETUP CNTL
VS CNTL
PFC
ADJ
VA CNTL
5V CNTL
32V CNTL
VSC
CNTL
VSC POWER
: A Symbol of starting of the PIN number
21/40
Connection Diagram of RT-BA10
P301B12PIN
P00112PIN
STB D-SUB B/D
P818B10PIN
P8708PINP302B
12PINP303B10PIN
P304B7PIN
P305B3PIN
P801M
P301A 12PIN P302A 12PIN P303B10PIN
P304B7PIN
P305B3PIN
STB - MAIN
12PINSTB-CONTROL B/D
STB-POWER
P801S
P810A10PIN
P870A8PIN
Lightning Wire
22/40
Pin Detail of RT-BA10
12PINSTB-CONTROL B/D
S-DE
TG
ND
S-CIN
GN
DS-Y
ING
ND
VIN
3-VG
ND
VIN
3-LG
ND
VIN
3-R
KIN1KIN2KIN3
KOUT1KOUT2KOUT3
GNDR-LEDG-LEDGND5V
GND P301B12PIN
P302B12PIN
P303B10PIN
STB - MAIN
P870B8PIN
P818B10PIN
P00112PIN
POWGNDST5VGND6V
GND13VGND30VGND
S-WOOFERGND
OUT-LOUT-RGND
MUTEGND
DV
D-Y
GN
DD
VD
-PbG
ND
DV
D-Pr
GN
DD
VD
-LG
ND
DV
D-R
GN
DG
ND
GN
D
PC-B
GN
DPC
-GG
ND
PC-R
GN
DPC
-HS
GN
DPC
-VS
GN
D
PC-L
GN
DPC
-RG
ND
GN
D5V
GN
DK
OU
T
2
GN
D
P305B3PIN
P801M P304B7PIN
P810A10PIN
P870A8PIN
STB-POWER
P801M
POWGNDST5VGND6V
GND13VGND30VGND
S-WOOFERGND
OUT-LOUT-RGND
MUTEGND
STB D-SUB B/D
S-DE
TG
ND
S-CIN
GN
DS-Y
ING
ND
VIN
3-VG
ND
VIN
3-LG
ND
VIN
3-R
DV
D-Y
GN
DD
VD
-PbG
ND
DV
D-Pr
GN
DD
VD
-LG
ND
DV
D-R
GN
DG
ND
GN
D
PC-B
GN
DPC
-GG
ND
PC-R
GN
DPC
-HS
GN
DPC
-VS
GN
D
PC-L
GN
DPC
-RG
ND
GN
D5V
GN
DK
OU
T
2
GN
D
P301A12PIN
P302A12PIN
P303B10PIN
P304B7PIN
P305B3PIN
: A Symbol of starting
of the PIN number
23/40
Trouble Shooting GuideX - Board COF Connector separationLift up the right and left of X-BOARD CONNECTOR.
When you handle COF CONNECTOR, don’t pressure. First release LOCK and separate.If COF CONNECTOR is damaged you should replace MODULE ASS’Y. so be aware of this!!
COF Connector
Lift up X-BOARD CONNECTOR and separate COP CONNECTOR by pulling up.
warningwarning
When you exchange X-Board, first you should separate COF Connector. Be careful not to damage it. COF Connector is attached to Module. Since COF Connector is torn, Module Ass’y must be replaced a new one. Be careful!
When you exchange X-Board, first you should separate COF Connector. Be careful not to damage it. COF Connector is attached to Module. Since COF Connector is torn, Module Ass’y must be replaced a new one. Be careful!
24/40
X - Board Connector separationX - Board Connector separation
Lift up each edge of left/right. Lifted conditionBe careful to handle LOCK or it can be hurt. When LOCK is hurt, replace a new X-BOARD.
It’s easy to separate it by releasing Connector Lock .
Do not pressure. Be careful to handle LOCK or it can be hurt. When LOCK is hurt, replace a new X-BOARD
warningwarning
25/40
Y - Board COF Connector separationY - Board COF Connector separation
Pull the white LOCK as shown in arrow
Pull the white LOCK as shown in arrow.
Separate COF CONNECTOR by pulling in the left.
warnignwarnign
Be careful to handle LOCK part and COF Connector when LOCK part is damaged, you should replace a new Y-Board. In case of COF Connector, Module Ass’y
26/40
Z - Board COF Connector separationZ - Board COF Connector separation
Separate the fixed Screw of Z-Board..Pull out Lock as shown in arrow. warningwarning
Pull COF Connector as shown in arrow.It’s easy to separate COF on condition that Z-Board Screw is separated. In case Z-Board is assembled,it’s really hard to separate.
Condition in Lock part is pulled
COF Connector
be careful not to tear COF Connector. If COF Connector is torn, replace a new Module Ass’y.
27/40
each Connector separationeach Connector separation
Push LOCK and pull out
PUSH PUSH PUSH
PUSH PUSH PULL
28/40
Controller Board VSC Board ConnectorController Board VSC Board Connector
29/40
Gas injection (sealing up) conditionGas injection (sealing up) condition
Be sealed up after gas injectionBe sealed up after gas injection
Be careful to handle the sealed-up part after gas injection.
If it is broken the gas escapes. So replace a module.
warningwarning
30/40
Power is on and off 2 ~ 3 minutes later ( Protect )Power is on and off 2 ~ 3 minutes later ( Protect )
Power is On and off 2~3 minutes.(Protect)
Power is On and off 2~3 minutes.(Protect)
P301 Connector Open Check.P301 Connector Open Check. X - Board Top Right Change.X - Board Top Right Change.OK
P302 Connector Open CheckP302 Connector Open Check X - Board Top Left Change.X - Board Top Left Change.OK
P303 Connector Open CheckP303 Connector Open Check X - Board Bottom Right Change.X - Board Bottom Right Change.OK
P304 Connector Open CheckP304 Connector Open Check
P102 Connector Open CheckP102 Connector Open Check
X - Board Bottom Left Change.X - Board Bottom Left Change.OK
Z - Board Change.Z - Board Change.OK
P3, P2 Connector Open CheckP3, P2 Connector Open Check OKY - Board Change.Y - Board Change.
P005, P003 Connector Open CheckP005, P003 Connector Open Check
P006 Connector Open CheckP006 Connector Open Check
VSC- Board Change.VSC- Board Change.
VSC - Board Change.Sound Output IC Short Check
VSC - Board Change.Sound Output IC Short Check
Power Board ChangePower Board Change
OK
OKPROTECT operation
when the electrical load voltage is Short.
When each voltage doesn’t work (in general)
PROTECT operation
when the electrical load voltage is Short.
When each voltage doesn’t work (in general)
31/40
As soon as the Power is On, it’s off in 2 ~ 3 minutes. ( Protect )As soon as the Power is On, it’s off in 2 ~ 3 minutes. ( Protect )
L813 dry joint
Inferior phase : as soon as the power, it’s off in 2 -3minutes.
(PROTECT circuitoperation) inferior cause : no VS voltage L813 Coil dry joint.
CheckCheck Open the Connector connecting to each Board to check the power is off.if each Board is same, check the Power Board and voltage.
32/40
ADD BAR inspection and repairADD BAR inspection and repair
HEATRUN : WHITE
Press the ADJ KEY and check the position of add bar by changing WHITE or RED or BLUE or GREEN
Top Right Top Left
Bottom RightBottom Left
PD-40X2 uses 4 board such as left,right, top and bottom.Divide the screen in 5 and once you see ADD BAR check COF CONNECTOR between MODULE and X-BOARD.If there is no defect in COF CONNECTOR replace X-BOARD.But the problem still remains and check the connector between X-BOARD and CONTROL BOARD. And if you can’t find defect, check CONTROL.
PD-40X2
Top
Bottom
PD-60X3 uses 2 X-BOARDs such as top and bottom so when the problems occur in top or bottom, check ADD BAR first and then CONNECTOR, X-BOARD, CONNECTOR and CONTROL BOARD
PD-40X3, PD-60X3
33/40
DND C/S the analysis of inferior goods
1.June 13 inferior receiptPD 40X 2 Filed inferior goodSet No : 912KC 00036 Module No : P239102815-215customer : in kyeongi provincecontents: tape droop management: tape rework
13 inferior receiptPDP 40 NVDN 4 Set No : 104KC 00176 Module No : 503007PRODUCT RECORD : DND sends it to C/S after reworking
POWER B/D .contents : B color Address Open 1line causes : dented COF
: no inferior phase in DND process, assumed that inferior happens during the analysis in DND ,due to Power B/D
COF dented
34/40
inferior receiptPDP 40NVDN 4 Filed Set No : 104KC 00206 Module No : 32184customer : a surgeon in Kyeongi provincecontents : Address R color inferior cause : DATA output inferior by X-L-TOP IC14,16 pin dry joint
( normal curve by tearing off IC Pin)management : X-L-TOP replacement
IC14
Dry joint
Curve inferiornormal curve
35/40
CheckCheck
The blue spreads on the screen (electric discharge inferior) and the power’s off in 2 -3 minutes this phase repeats whenever the power is on.
Inferior phase causes management
Under 14V 15V Line, electric discharge inferior occurs and the power’s offbecause protect circuit is off.
-. The power board SMPS not winded enough has the electric discharge inferior
because of the short of the voltage capacity.
-. X-Board TR Short,over-electrical load
Protect circuit .
The power board PCBreplacement of SMPS
TRANS replacement(B,D Type)
X-Board replacement
Measure SMPS 2차측 15V Line by Digital Multi Meter and check the voltage changes.If it is less than 14V, the screen ins broken with the blue. As soon as the power is ON and it’s offshowing this kind of screen. Remove all connectors and check the board not off.. X-Board inferior and the power board SMPS replacement.
inferior X-Board
36/40
CheckCheck
The whole screen is broken with the blue (electric discharge inferior) whenever the power is on this phase occurs.OSD is normal.
Inferior phase cause management
under 14V 15V Line, electric discharge inferior occurs.
-. The power board SMPS is not winded enough.because the voltage capacity is short ,electric discharge inferior occurs.
The power board PCB replacementor SMPS TRANS replacement( B,D Type)
Measure SMPS 2 15V Line by Digital Multi Meter and check the voltage changes.If it is less than 14V, the screen ins broken with the blue.(electric discharge inferior )
37/40
CheckCheck
The top left part of screen is broken(X-BOARD TOP RIGHT)
Inferior phase causes management
Presume X-BOARD inferior.cause : X-BOARD TOP RIGHT 5V doesn’t turn
X-BOARD TOP RIGHT 5V adoesn’t turn
X-BOARD TOP RIGHT 5V CHECK SMPS ---- X-BOARD TOP RIGHT 5V CHECK
38/40
CheckCheck
The pink in the top left part of the screen.(X-BOARD TOP RIGHT)
Inferior phase causes management
Presume X-BOARD inferior.cause : when X-BOARD TOP RIGHT VA(70V)doesn’t turn, this phase
occurs.
X-BOARD TOP RIGHTVA(70V)doesn’t turn.
VA(70V) LINE OPEN.
X-BOARD TOP RIGHT VA (70V) CHECK SMPS ---- X-BOARD TOP RIGHT VA (70V) CHECK
39/40
CheckCheck
the 3/5 top left in the screen isn’t out(X-BOARD TOP RIGHT)
Inferior phase Causes management
X-BOARD TOP RIGHT 12V doesn’t turnBoard VA(70V) doesn’t turn.
X-BOARD TOP RIGHT12V LINE OPEN
X-Board Top Right VA(70V)Line Open
X-BOARD TOP RIGHT 12V CHECK ( in 0V,this phase.)
X-Board Top Right VA(70V) CHECK. (in 0V this phase)
SMPS --- X-BOARD TOP RIGHT supplied 12V ,VA(70V) CHECK.
40/40
CheckCheck
The 3/5 top right of the screen isn’t out.(X-BOARD TOP LEFT)
Inferior phase causes management
X-BOARD TOP LEFT 12V doesn’t turn.
X-BOARD TOP LEFT VA(70V) doesn’t turn.
X-BOARD TOP LEFT12V LINE OPEN.
X-BOARD TOP LEFTVA(70V) LINE OPEN
X-BOARD TOP LEFT 12V CHECK ( in 0V)
X-BOARD TOP LEFT VA(70V) CHECK(IN 0V)
SMPS --- X-BOARD TOP LEFT , 12V,VA(70V) CHECK.