Great Company Great People Blue Ocean P Innovation
Pacific 2(Broadcom) Training manualPacific 2(Broadcom) Training manual
Contents
- Whole system diagram
- What is BCM3550
Great Company Great People
2006.06.14DDC R&D Center AT1 GrKim Sung-Kyeong
- System in detail
DDC Lab. AT1 Gr
- Trouble shooting guide
Great Company Great People Blue Ocean P Innovation
This document is for the lecture of LG service man.
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Product Brief Specification
Feature Broadcom RemarkRF 1 RF(Air /Cable) 1 RFProgram Guide Type O(PSIP) Use Brief InfoXD Engine Yes USE scalier On/Off OSD MenuEnhanced Noise Reduction Yes(2D)
Adaptive Picture Mode Yes
RGB DTV No
SRS Trusurround TX Yes
BBE Yes
Auto Navigation (Link) Yes
RGB In (15 Pin)
DOS70,VGA60,SVGA60,
XGA60,WXGA60,SXGA60
Phase, SizeAdjust
Others
Audio Output 10W*2 Freeze No
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Block diagram for CI DTV
Side AV V,LR
Rear AV V, LRRear S YC, LR
Side S YC, LRMNT_V_Out
IN1
OUT1IN4IN1
IN4
IN5
OUT3
Comp_1 YCbCrComp_2 YCbCr
IN3IN4
CV
BS
CVBS
ATSC/NTSC Tuner
CableANT.
64-Bit I/F
BCM3560
12LVDSTrans
CXA2069(AV S/W)
VDEC_CVBS/S_Y
VSB/QAM/NTSC/SIF
SPDIF Out
I2S Output
SPDIF_OUT
Flash Memory16MB
HDMI/DVI
RS-232C
SDRAM256Mbit X-tal
54MHz
Reset IC
AudioPWM L/R
Sub Micom(MTV416)
Sub Micom(MTV416)
EEPROM
HDMI & ComponentRGB-PC
Audio
Tuner
Comp_1 LRComp_2 LRRGB(Phone) LR
AUDIO ADCAudio R/L I2S
I2S Audio Input
MST3361R/G/BH/V Sync
DVI Input
Digital Output.
SDRAM256Mbit
DDS
Data [24] Hsync/Vsync/DE/Clk2X1
S/W
2X1S/W
HDCP
IIC
TMDS
DDS
SPDIF
Y,C
IF P/N for DTVSIF for NTSC
SIF for NTSC
USB for upgrade S/W
LRMNT_OutAUDIO DAC
IIS
Made by S.B ParkModified by S.K KimDate 2006. 2. 9
TMDS
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board PCB Layout
206
ST3232
BCM3560
f
l
a
s
h
K
4
S
6
4
1
6
3
2
H
K
4
S
6
4
1
6
3
2
H
MST3361
MTV416MV
Control CXA2069TPS5100
SPK
THC63LVD103
For PDPPower & (Fan)
245
Subject:PCB Layout for 3rd boardof CI_Project using BCM3560
made by S.K Kimdate 2006.2.9
CMO
LPL
Jack:JTAGSide AV
X-tal
Comp S/W
Comp S/W
LPF
AUO
USB
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Power flow diagram
+12.0V+12.0V
KIA78R09KIA78R09 FAN1,2,3FAN1,2,3 FAN4FAN4 SI4925DYSI4925DY MP1593MP1593 CMO, AUOCMO, AUO
+9.0V+9.0V
MC3307MC3307CXA2069CXA2069
P_+19VP_+19V
TPA3100TPA3100
KIA78R09KIA78R09
5V_PANEL
ST_5VST_5V
BA033FPBA033FP MTV416GMFMTV416GMF
3.3VST_MICOM
A3.3V_BCMA3.3V_BCM
BCM3560BCM3560
+3.3V+3.3V
SC1566-2.5SC1566-2.5 BCM3560BCM3560 HYDU561622HYDU561622 SC1566-2.5SC1566-2.5
A2.6V_BCMBCM3560
D2.6V_BCMBCM3560 SC1566-2.5SC1566-2.5
+2.5V_MSTMST3361MST3361
BCM3560BCM3560 S29GL128MS29GL128M THC63LVDTHC63LVD 74LVC14A74LVC14A MST3361MST3361
3.3V_MSTDDCDDC
A1.2V_BCM, D1.2V_BCMBCM3560BCM3560
+6.0V+6.0V PQ05DZ1UPQ05DZ1U
CS4344CS4344
+5.0V
AT24C512WAT24C512W AT24C02NAT24C02N MM1732MM1732CS5331ACS5331A M62320FPM62320FP
FMS6400FMS6400FMS6407FMS6407 74F08D74F08D LM75CIMXLM75CIMXTPS2042TPS2042
D3.3V_BCM +5V_TUAZ1117H-3.3AZ1117H-3.3 BCM3560BCM3560 TUNERTUNER FSA1156FSA1156
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BCM3560AV S/W(CXA2069)
Main EEPROM
4.7K
5.0V
I2C_Channel 0
I2C_Channel 1 ATSC/NTSC Tuner
I2C_Channel 2
I2C_Channel 3 Sub-Micom
I2C0_5V
I2C1_5V
I2C2_3.3V
I2C3_3.3V
I2C1_3.3V
2.7K
2.7K
3.3V
M62320
4.7K5.0V
PDP Module
MST3361
3.3V
I2C control block diagram
I2C Address
0x90
0xC2
0x74
0xA6
0x1C
0x50
0x9C
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Detail signal flow in Pacific 2(Broadcom) system
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Video signal path for Composite/S-video/IF
MNT_V_Out
SD_CVBSCXA2069
OUT3
Side AV V,LR
Rear AV V, LR
Rear S YC, LR
Side S YC, LR
IN1
IN4
IN1
IN4
IN3
IN4
Comp_1 LR
Comp_2 LR
RGB(Phone) LR
BCM3550
SD_Y
SD_C
ANT/ Cable
TV IN
CVBS from TUNER
FMS6400
Y/CVBS
C
OUT1/Y
OUT1/C
M_CVBS/Y
C
M_CVBS
C
Y
LPF for CVBS
SD_CVBS
TUNER
IF_P
IF_N
IF_P from TUNER for DTV
IF_N from TUNER for DTV
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Video signal path for Component
Comp1_Y 8(3A)
Comp1_Pb 11(2A)
Comp1_Pr 16(1A)
Comp2_Y 9(3B)
Comp2_Pb 14(2B)
Comp2_Pr 1(1B)
2 12 7SW1 SW2 SW3
6(Out3) Comp_Y
5(Out2) Comp_Pb
3(Out1) Comp_Pr
L
H
8(3A)
11(2A)
16(1A)
RGB_G 9(3B)
RGB_B 14(2B)
RGB_R 1(1B)
2 12 7SW1 SW2 SW3
6(Out3) Y/G to LPF
5(Out2) Pb/B to LPF
3(Out1) Pr/R to LPF
L
H
IC5001
IC5002
Y/G 3(YIN)
Pb/B 5(PBIN)
Pr/R 7(PBIN)
1(EXT_SYNC)
18(SYNC_IN)
16 Comp_Y
15 Comp_Pb
14 Comp_Pr
44(GIN+)43(SOGIN)
41(BIN+)
46(RIN+)
IC704IC4009
RGB_G
H Sync7404V Sync
RGB_BRGB_R
BCM3550
GPIOGPIO for sync selection
HD-DVIData [24]
H sync/V sync/DE/Clock H,V Sync/Clock
RGB_HS
GPIO for sync selectionRGB_HS
RGB_VS
RGB_HSRGB_VS
GPIOGPIO for Component 1
GPIOGPIO for Component 2
GPIO for Component 2
GPIO for Component 1
IC1001FMS6407 MST3361
MM1731
MM1732
DATA_OUTH/V/DE/CLK
LPF_CTRL0LPF_CTRL1
LPF_CTRL0LPF_CTRL1
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Video signal path for HDMI
IC704BCM3550
GPIOGPIO for Interrupt
HD-DVIData [0: 23]
H sync/V sync/DE/Clock H,V Sync/Clock
GPIO
GPIO for Power detection 1GPIO
GPIO for Hot plug detection 1
IC1001
MST3361
TMDS1 RX0+/-
TMDS1 RX1+/-TMDS1 RX2+/-TMDS1 RX3+/-
DDC SDA1
DDC SCL1 EEPROMFor EDID
DDC SDA1
DDC SCL1
TMDS1INPUT
DDC1INPUT
TMDS2 RX0+/-
TMDS2 RX1+/-TMDS2 RX2+/-TMDS2 RX3+/-
DDC SDA2
DDC SCL2 EEPROMFor EDID
DDC SDA2
DDC SCL2
TMDS2INPUT
DDC2INPUT
HDCP SDA
HDCP SCLEEPROMFor HDCP
NDA
NCL
INT
DATA_OUT
H,V Sync/DE/Clock
HDMI 1
HDMI 2
GPIO
GPIO for Power detection 2GPIO
GPIO for Hot plug detection 2
GPIO for Power detection 2GPIO for Hot plug detection 2
GPIO for Power detection 1GPIO for Hot plug detection 1
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Audio signal path for all
SIF from TUNER
CXA2069
Side AV V,LR
Rear AV V, LRRear S YC, LR
Side S YC, LR
IN1
IN4IN1
IN4
IN3
IN4Comp_1 LR
Comp_2 LRRGB(Phone) LR
OUT1/R
OUT1/L
ANT/ Cable
TUNER
AUDIO ADC(CS5331)
Audio R I2S_SCK_IN
Audio L
BCM3550
SIF
I2S_LRCH_IN
I2S_LRCK_IN
I2S_SCK_IN
I2S_LRCH_IN
I2S_LRCK_IN
SPDIF_IN_P SPDIF from MST3361
_RMNT_OutAUDIO DAC
(CS4344)
I2S_SCK_OUT
I2S_LRCH_OUT
I2S_LRCK_OUT
I2S_SCK_OUT
I2S_LRCH_OUT
I2S_LRCK_OUT
_LMNT_Out
Analog L_OUTAudioAMP
(TPA3100)
SPDIF Out SPDIF_OUT_P
AUD_LEFT_P
AUD_LEFT_N
AUD_RIGHT_N
AUD_RIGHT_P
SPK_L_P
SPK_L_N
SPK_R_N
SPK_R_P
Analog R_OUT
MC3307(OP-AMP)
IF_P from TUNER for DTV
IF_N from TUNER for DTVIF_PIF_N
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BCM3550
CXA2069
+5V
4.7k(R5097) 22(R3126)
COMP1_SW
+5V
4.7kAE1
AC4
22(R3125)
COMP2_SW
0(R3072)
2.7k(R5128)
HDMI_POWER_1AD24
0(R3075)
HDMI_POWER_2AC22
Y23 5(GND)
+9V
100k(R5027)
AV1_SW
+9V
100k(R5069)
AV2_SW
6(S2-1)
13(S2-2)0(R5088) 100(R5079)
J5005
J5004
J5007
P5001
22(R3052)
/RGB-PC
5V_HIGH
5V_HIGH
9V_HIGH
9V_HIGH
5V_HIGH
5V_HIGH
0V_HIGH
+5V
10k
1k
Audio Link system
P7007
P7008
P7004
RGB-PC , H/W . Plug-IN (LOW), Plug-OUT (HIGH)
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Video Input level for RF/AV
* Measurement data for RF/AV amplitude at the point of BCM3550 input pin
700mV700mVInputIC spec
Measurement waveform
700mV700mVMeasurement data
PALNTSC and PALNTSC and PALSystemSCART-CVBSAVRFInput signal
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Great Company Great People Blue Ocean P Innovation
Video Input level for S-video/Component
* Measurement data for S-video/Component input amplitude at the point of BCM3550 input pin
500mV~1V700mV
800mV700mV
480i@60Hz,576i@50HzNTSC and PALComponentS-Video
InputIC spec
Measurement waveform
Measurement data
SystemInput signal
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Detail Block of BCM3550 which is used in Pacific 2 TDR(Broadcom)
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Great Company Great People Blue Ocean P Innovation
Main feature of BCM3550
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Main feature of BCM3550
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Whole chip internal block
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Brief diagram for our system
Video NetworkSwithFront
LboxDetectLbox
Detect
Video NetworkSwithBack
NULLNULL
2D HD Scaler2D HD Scaler
2D HD Scaler2D HD Scaler
MADMAD
CRCCRC
Capture 0Capture 0Capture 1Capture 1Capture 2Capture 2
TNT/PEP
TNT/PEP
VBPVBP
NULLNULL
Feed BackFeed Back
Compositor
MPEG FeederMPEG Feeder
Video FeederVideo FeederVideo FeederVideo FeederVideo FeederVideo Feeder
ITU 656ITU 656
HD-DVIHD-DVI
VDEC 0VDEC 0
Feed BackFeed Back
DNRDNR
2D SD Scaler2D SD Scaler VEC
UpScalerUpScalerGraphicGraphic
VDEC 1VDEC 1
HDMI-RXHDMI-RX
Digital Input
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Great Company Great People Blue Ocean P Innovation
ADC/IF demodulator
Inband AFE12Bit A/D
Inband AFE12Bit A/D
AGC Control
ATSC VSBAdvancedReceiver
ATSC VSBAdvancedReceiver
ATSCFEC
ATSCFEC
InbandOutput
Interface
InbandOutput
Interface
OOB QPSKReceiver
OOB QPSKReceiver
OOB Output
Interface
OOB Output
InterfaceDVS-167 FECDVS-178 FECDVS-167 FECDVS-178 FEC
OOB AFE6Bit A/D
OOB AFE6Bit A/D
AGC Control
QAM VSBAdvancedReceiver
QAM VSBAdvancedReceiver
ITU-T J.83Annex
A/B/C FEC
ITU-T J.83Annex
A/B/C FEC
NTSC IFDemodulator
NTSC IFDemodulator
Input BandInput Band
Input BandInput Band
Input BandInput Band
Input Band
Input BandMUXMUX
Input BandInput Band
BCM3560 DATATransport ModuleBCM3560 DATA
Transport Module
Memory ControllerMemory Controller
Video OutputVideo Output
Audio OutputAudio Output
HSX1 SerialHSX1 Serial
MPEG-2 TransportDemux w/DVB,DESMPEG-2 TransportDemux w/DVB,DES
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Before Video network
Video NetworkSwithFront
AFEAFE FrontEndFrontEnd
Y/CSeparation
Y/CSeparation
ChromaDemo
ChromaDemo
BackEnd
BackEnd
VDEC BlockBVB
InterfaceBVB
Interface
Memory Interface (SCB)Memory Interface (SCB)
SCBBUS
SCBBUS
CromaConversion
CromaConversion
HorizonPan ScanHorizon
Pan ScanFrameBuffer
FrameBuffer De-InterDe-Inter
MPEG FeederBVB
InterfaceBVB
Interface
SCBDATABuffer
SCBDATABuffer
PixelCropping
PixelCropping
ColorExpansion
ColorExpansion
ColorKey
ColorKey
AlphaPre-
Multipl
AlphaPre-
Multipl
Graphic Feeder BlockHorizonScaler
HorizonScaler
GammaCorrectionGamma
CorrectionColor
ConvertorColor
ConvertorBVB
InterfaceBVB
Interface
Coef TableCoef TableCLUTCLUT
?????? RGBConverterRGB
ConverterInput
TimingAdjust
InputTimingAdjust
DVI-SecondaryBVB
InterfaceBVB
Interface
?????? RGBConverterRGB
ConverterInput
TimingAdjust
InputTimingAdjust
DVI-PrimaryBVB
InterfaceBVB
Interface
HDMIReceiveDecode
HDMIReceiveDecode
HDCPDecryptHDCP
Decrypt
HDMI BlockHDMITMDSPins
HDMITMDSPins
LboxDetectLbox
Detect
TAB2D - Scaler
TAB2D - Scaler
2D - Scaler2D - Scaler
MAD-ITMAD-IT
NULLNULLFeed BackFeed Back
SCBBUS
SCBBUS
CromaConversion
CromaConversion
HorizonPan ScanHorizon
Pan ScanFrameBuffer
FrameBuffer De-InterDe-Inter
Video FeederBVB
InterfaceBVB
Interface
ANALOGPins
ANALOGPins
HDMIPins
HDMIPins
DVIPinsDVIPins
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Scaler and MAD
Video NetworkSwithFront
LboxDetectLbox
Detect
MUXMUX
BVBReceiver
BVBReceiver
VerticalScaler
VerticalScaler TABTAB
MUXMUX
MUXMUX HoarizonalScalerHoarizonal
Scaler
TAB 2D-Scaler
MUXMUX
BVBReceiver
BVBReceiver
VerticalScaler
VerticalScaler
MUXMUX
MUXMUX HoarizonalScalerHoarizonal
Scaler
2D-Scaler
BVBReceiver
BVBReceiver
PixelDistribution
Block
PixelDistribution
BlockPixel
ProcessingBlock
PixelProcessing
Block
SCBOutputSCB
Output
BVBInterface
BVBInterface
Field Control BlockField Control Block
MAD Video NetworkSwithBack
CRCCRC
Capture 0Capture 0
Capture 1Capture 1
Capture 2Capture 2
NULLNULL
NULLNULL Feed BackFeed Back
VBPVBP
CompositorCompositor
PEPPEP
Graphic Feeder Block
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Great Company Great People Blue Ocean P Innovation
PEP and Compositor
Video NetworkSwithFront
CRCCRC
Video NetworkSwithFront
BVBReceiver
BVBReceiver
Packing&RDMA TrigPacking&
RDMA TrigBurstFIFO
BurstFIFO
Capture Block
DMADMA SCBBUSSCBBUS
NULLNULL
Feed BackFeed Back
VBP(Video Bypass)
VBP(Video Bypass)
Graphic Feeder Block
BVBReciever
BVBReciever
422 TO 444Conversion422 TO 444Conversion
Video Intra-Surface (Without PEP)Color Bright
Adjust(Matrix)
Color BrightAdjust(Matrix)
LumaKeyingLuma
Keying CroppingCroppingBVB
InterfaceBVB
Interface
BVBReciever
BVBReciever CABCAB
422 TO 444Conversion422 TO 444Conversion LABLAB
ColorCLIP
ColorCLIP
Video Intra-Surface (With PEP)
LumaKeyingLuma
Keying
BVBInterface
BVBInterface
Color BrightAdjust(Matrix)
Color BrightAdjust(Matrix)
CroppingCropping
BackGround Color
Y/Cb/Cr RegisterY/Cb/Cr Register
BVBReciever
BVBReciever
Graphics Intra-Surface
CroppingCropping BVBInterfaceBVB
Interface
ScreenCompositer
ScreenCompositer
SurfacesMUX
SurfacesMUX
Blend0Blend0Blend1Blend1
Blend2Blend2
ForeGround
ForeGround
ForeGround
BackGround
BackGround
BackGround
BVBInterface
BVBInterface
PEP COMPOSITOR
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Back end(Digital and analog)
VBP(Video Bypass)
VBP(Video Bypass)
VideoCompositor
VideoCompositor
MuxMux
MuxMux
CSC(Matrix)CSC
(Matrix) DigitalVideo
Formatter
DigitalVideo
Formatter
VIDEO_ENC_PRIM_CONTROL.SELECT
656656
CSC(Matrix)CSC
(Matrix) DigitalVideo
Formatter
DigitalVideo
FormatterDVI
InterfaceDVI
Interface
MuxMux
MuxMux
CrossBar
CrossBar
CSC(Matrix)CSC
(Matrix) VideoFormatter
VideoFormatter
SUB-CarrierModulator
SUB-CarrierModulator
InputTimingInput
Timing
VIDEO_ENC_BYPASS_CONTROL.SELECT
DigitalTimingRAM
DigitalTimingRAM
DigitalTiming
Generator
DigitalTiming
Generator
DigitalTiming
Generator
DigitalTiming
Generator
MISC_ITU656_IN_MUX.SELECT
MISC_DVI_IN_MUX.SELECT
656
DVI
DAC3
DAC2
DAC1
DAC0
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Explanation
Mpeg Feeder And Video Feeder (MFD and VFD)
-Mpeg Feeder is a data path of VSB or QAM decoded signal. These signals go to the Minititan of BCM3550.-In the minititan block do processing the MPEG and video.
VDEC ( Video Display Decoder)
-This block has several detailed block. It can handle the input composite signal for example, Y/C separation,color decoding, auto gain control, etc.
VDEC Detail Block
FrontEnd
FrontEndAFEAFE
Y/CSeparation
Y/CSeparation
ChromaDemo
ChromaDemo
BackEnd
BackEnd
BVBInterface
BVBInterface
Digital Input
-Digital input can handle digital video signal. In our system through this path, component,RGB PC, HDMI/DVI signalsare decoded. So this path is very important block in our system.
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Trouble Shooting Guide for LG Service Man
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TV/CATV doesnt display
Check TU4001 Pin9(Video output)Can you see the normal signal?
Check the input(Pin63) of AV switch(IC5003).Can you see the normal waveform?
Check the output(Pin56) of AV switch(IC5003).Can you see the normal waveform?
Check the input(Pin1) of LPF(IC4006).Can you see the normal waveform?
YES
YES
YES
Could you measure voltage of TU4001 & IIC lines?
Are they all normal?
NONO You should check power line
& IIC lines.
YES
You should replace TUNER.
NOAfter checking the Power of AV switch you should
decide to replace AV switch or not.
NOAfter checking the Power of AV switch you should
decide to replace AV switch or not.
NOAfter checking the Power of LPF you should decide to
replace LPF or not.
YES
NOCheck the output(Pin8) of LPF(IC4006).
Can you see the normal waveform?After checking the Power of LPF you should decide to
replace LPF or not.
Check the input(PinH26) of BCM3550(IC4006).Measure waveform at C1010 because its more
easy to check.Can you see the normal waveform?
YES
This board has big problem because Main chip(BCM3550) have some troubles.
After checking thoroughly all path once again, You should decide to replace BCM3550 or not.
YEX
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Video doesnt display
NOCheck J5007 Pin3C
Can you see the normal waveform? J5007 may have problem. Replace this Jack.
YES
Check the input(Pin1 or Pin8) of AV switch(IC5003). Pin1 is for video1,Pin8 is for
video 2.Can you see the normal waveform?
NOAfter checking the Power of AV switch you should
decide to replace AV switch or not.
YESNO
Check the output(Pin56) of AV switch(IC5003).Can you see the normal waveform?
After checking the Power of AV switch you should decide to replace AV switch or not.
YES
NOCheck the input(Pin1) of LPF(IC4006).
Can you see the normal waveform?After checking the Power of LPF you should decide to
replace LPF or not.
YES
NOCheck the output(Pin8) of LPF(IC4006).
Can you see the normal waveform?After checking the Power of LPF you should decide to
replace LPF or not.
Check the input(PinH26) of BCM3550(IC4006).Measure waveform at C1010 because its more
easy to check.Can you see the normal waveform?
YES
This board has big problem because Main chip(BCM3550) have some troubles.
After checking thoroughly all path once again, You should decide to replace BCM3550 or not.
YEX
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Component doesnt display
NOCheck J5004,J5005.
Can you see the normal waveform?
Check the input of Component switch(IC5001,IC5002).
Can you see the normal waveform?
J5004,J5005 may have problem. Replace this Jack.
YES
NOAfter checking the input TR of component, you should
decide to replace component switch or not.
Check the output of Component switch(IC5001,IC5002).
Can you see the normal waveform?
YESNO
After checking the Power of component switch you should decide to replace component switch or not.
YES
Check the input of MST3361(IC7004 Pin41,44,46).
Can you see the normal waveform?
NOAfter checking the Power of MST3361 you should
decide to replace MST3361 or not.
YES
NOCheck the output of MST3361(IC7004 ).
Can you see the normal waveform?After checking the Power of MST3361 you should
decide to replace MST3361 or not.
Check the input and output of BCM3550(IC4006). Especially you should check
The H,V sync and clock.Can you see the normal waveform?
YES
This board has big problem because Main chip(BCM3550) have some troubles.
After checking thoroughly all path once again, You should decide to replace BCM3550 or not.
YEX
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RGB_PC doesnt display
NOCheck input connect P7004.
Can you see the normal waveform? P7004 may have problem. Replace this Jack.
YES
NOCheck the input of Component switch(IC5002).
Can you see the normal waveform?After checking the input TR of RGBHV, you should
decide to replace these components or not.
YESNO
After checking the Power of RGB switch you should decide to replace component switch or not.
Check the output of Component switch(IC5002). Can you see the normal waveform?
YES
Check the input of MST3361(IC7004 Pin41,44,46).
Can you see the normal waveform?
NOAfter checking the Power of MST3361 you should
decide to replace MST3361 or not.
YES
NOCheck the output of MST3361(IC7004 ).
Can you see the normal waveform?After checking the Power of MST3361 you should
decide to replace MST3361 or not.
Check the input and output of BCM3550(IC4006). Especially you should check
The H,V sync and clock.Can you see the normal waveform?
YES
This board has big problem because Main chip(BCM3550) have some troubles.
After checking thoroughly all path once again, You should decide to replace BCM3550 or not.
YEX
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HDMI doesnt display
NOCheck input connect P7007.
Can you see the normal waveform?
Check DDC communication lines(IC7013 Pin5,6)
Check the input of MST3361(IC7004)This signal is TMDS.
Can you see the normal waveform?
P7007 may have problem. Replace this Jack.
YES
NOAfter checking the Power of this chip, you should
decide to replace this or not.
YES
YES
Check the output of MST3361(IC7004 ).Can you see the normal waveform?
YES
Check the input and output of BCM3550(IC4006). Especially you should check
The H,V sync and clock.Can you see the normal waveform?
YES
NOAfter checking the trace of TMDS lines and power of
MST3361, you should decide to replace MST3361 or not.
NO
YEX This board has big problem because Main chip(BCM3550) have some troubles.
After checking thoroughly all path once again, You should decide to replace BCM3550 or not.
After checking the Power of MST3361 you should decide to replace MST3361 or not.
Check HDCP communication lines(IC7005 Pin5,6)NO
After checking the Power of this chip, you should decide to replace this or not.
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