Text preview for : HTL5076SX-XAA_4.pdf part of Samsung HTL5076SX/XAA 14 files, 132 total pages, service manual / data for Samsung DLP TV model # HTL5076SX/XAA with L67B(N) Orchid chassis.
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Circuit Description
13. Circuit Description
13-1 Overall Block Description
USB Service jack / Wise Link
Jack Board
Main Board
The DLP TV is largely divided into: Power part, Engine part and Main + Rear parts. The ass'y that consists of the DMD board, Detect (Actuator) board, lamp, ballast and optical devices is called the Engine. The main + rear board parts receive the AV signals to output voice signals and process the remote control signals. The engine part displays the video data on the screen, which is generated in the main + rear boards. The AV signals are input through the main and rear boards. CXD3815 processes the MUX and decoding while S5H2201 processes the CPU functions, MPEG and I2S. Finally, the improved DNle image is sent to the DMD engine board. The final data by DNle is processed in DDP3021 of the DMD board to display the image on the DMD panel. This image is created by the light of the lamp through the color wheel which is enlarged and projected onto the screen. This is the DLP of the L6,L7,L8,K2 or K3 type that the actuator operates additionally during this process. The power terminal generates the DC power needed for the product and sends it to the analog board. The analog board supplies the power to the digital and DMD boards. In the meantime, the power source board supplies DC220V - 400V directly to the ballast in order to light the lamp. The ballast is like a stabilizer for lighting the lamp. The ultimate purpose of the TV set is to project an image onto the screen and output the voice signals synchronized with the image. And based on the DMD panel used, a 1-panel TV requires a color wheel while a 3-panel TV does not. The HD3,HD4,HD5 panel needs an actuator while the HD2 does not. However, the drive mechanism and the overall block structure of the two panels are the same.
Samsung Electronics
13-1
Circuit Description
13-2 Partial Block Description
13-2-1 Power Board Block Description
1. What is SMPS? This is an acronym for Switching Mode Power Supply and this is responsible for receiving AC input voltage (Line frequency: 50HZ~60HZ) and supplying insulated DC output. 2. SMPS Components 1) Standby Power: A combination of ICS801 (SWITCHING IC) and TS801S (TRANS) that supplies STAND-BY 5V for operating the Micom. 2) Multi Power: The voltage supplied when the power is turned on.It is a combination of IC2 and T801S that supplies various voltages including D12V, A6.0V, S16V 3. SMPS Operation 1) SMPS System: Uses Fly-Back technology for both standby and multi power. 2) Operation: Fly-Back is one of the most popular power-supply systems and uses less power than 200W as well as being the cheapest of all multi output SMPS systems. Let's have a look at how it operates... a. Converts AC input into DC (HOT) (rectifies to DS801 before smoothing to CS801) b. The converted DC voltage is high, especially compared to ground, so touching it will cause electric shock. Use T801S (Trans) to insulate the secondary voltage and take advantage of the PWM operations of T801S and IC801S to induce it. c. The secondary induced voltage is a dozen-KHZ square wave power, which goes through the smoothing cap (CS822) to be generated in the standby 5V. d. Multi power also operates the same way. Options are deleted on the ATSC only Model
13-2
Samsung Electronics
Circuit Description
4. Input&Output voltage 1) Input voltage America(AC120V) - OPTION 2) Output voltage D12V / 2.5A - 12V , 3.3V , 1.8V : For signal processing A6.0V / 0.7A - For driving the tuner S16V / 4A -For driving sound processor 150W - For driving the Sub SMPS
Samsung Electronics
13-3
Circuit Description
13-2-2 Digital Board Block Description
Options are deleted on the ATSC only Model
WISE LINK
USB1.1
DTV
Albatross
2 MPEG 2 IPC 3 Scaler AC3 -Decod 32bit Graphic 2 TS 1n 1 TS out
2ch 32bit DDR
Flash ONENAND
Micom S3F84BB
Control Panel
83.25MHz
DDR MEMORY ATSC ONLY(32MB*4)
RF-SPLITTER Air
VSB NIM
TS1 (parallel)
TMTUNER block SUB TUNER
I2S to MSP4450 I2S from HDMI
Cable
153.5MHz
30 bit in 30 bit out (10 bit proc.)
OSD 32bit
YC VIDEO 1/2 CVBS Monitor out DTV CVBS IN OUT VIDEO SW TEA6425 ADC main CXD3815
80MHz BT601 20bit
YCbCr 24bit 74.175MHz
Display Panel
74.25MHz
TMDS Tx Sil7170
CH3 CH1
YCbCr 16bit
B1 (SDP62)
CH4 CH2
COMPO. 1/2 Component ADC & TMDS MST3369 170Mhz
YUV or RGB 4:4:4 30bit
165Hz
2 IPC SCALER DNIe
EM6A9320B1,128M bit X2
PC HDMI1 HDMI
166MHz
I2S to Albatross
HDMI2 HDMI HDMI S/W
AV1,2,3/ Compo1,2 PC/ DVI
Sound Processor STV8258 Audio SW TEA6422
Audio DA PCM1754
SPDIF out R Speaker L
HDMI3 HDMI
I2S from Albatross+
Audio AMP NTP3000
Select Sound/Video One is selected from multiple inputs by the switching ID. MICOM decides which port is used for output. For broadcasting signals, sub-outputs are transferred in CVBS and, the main outputs in Y/C through the 3D Comb, to the digital board. Sound signals are selected by the switching IC, of which only one input is transferred to the speaker. Detection Signal Flow When each port is connected to a signal cable, the detection signal is "low" and can be checked by Micom scanning. CXD3815: Analog YPBPR, CVBS, Y/C(SUPER), Input MUXING and Video Decoding S5H2201: CPU, + MPEG Decoder, Audio signals transferred to MSP of the analog board by I2S Tuner: Main-HD Tuner,Sub-Analog Tuner HDMI: Receives Two input signal and transfers it to S5H2201. Others: Anynet implementation, Optical Power Port, USB Update Port (not available for MP3)
13-4
Samsung Electronics
Circuit Description
13-2-3 DMD Board Block Description
Controls the lamp (ON/OFF) Drives the color wheel motor Drives the panel Controls the sensors
Samsung Electronics
13-5
Circuit Description
13-3 New Circuit Description
13-3-1 Output Voltage States of the DMD Board Parts
O u t p u t T e rm in a l w a v e f o rm
26V
LO C C N 8 0 5 , 4 p in L E D _L A M P L IT Z
C h a ra c t e ris t ic s H ig h ( 3 . 3 V) B e f f o re t h e L E D T u rn s o n , L o w ( 0 V) w h e n t h e L E D T u rn s o n .
8V - 26V
13-3-2 DMD Panel Pin Terminal Characteristics Diagram
Remove the heat sink attached to the DMD Board and tighten the screws in four places and then inspect the characteristics of each pin terminal.
The vertical lines, which may occur due to improper connections between the panel and the PCB, occur with intervals of 50 inches(26mm). If vertical lines occur with intervals of more than 26mms, it indicates a failure of the DDP1011 IC itself. If they occur with intervals of less than 26mm, it means that more than two pins have bad connections.
DA,DB output wave [Screen:WHITE]
Pin Name V V2 DA DB NO. G Voltage : 3.3V VCC2 : 8V
Description
Pin Name T ME C P# N# Test Point Mirror Bias Extra Clock
Description
A Channel Data Bus [When measured, there should be a waveform] B Channel Data Bus [When measured, there should be a waveform] MBRST# (Mirror Bias Rest) 26V
A,B Channel Positive A,B Channel Negative
The part from the present position to the GND (The black part is also a GND.)
13-6
Samsung Electronics
Circuit Description
13-3-3 Description of Terminal Characteristics
Pin Name Description
SCTRL_BN/P DCLK_BN/P SCPDI SCPDO SCPENB SCPCK DMD RESETB MBRST(14:0) MBRST_EXTRA SCR_CLR READOUTA(1:0) READOUTB(1:0) TP(2:0) RSV_A(4:0)/RSV_B(4:0) EVCC VCC2 VCC VSS
B channel LVDS serial control B channel LVDS CLOCK SERIAL CONTROL DATA INPUT SERIAL CONTROL DATA OUTPUT SERIAL CONTROL ENABLE SERIAL CONTROL CLOCK DMD LOGIC RESET MIRROR BIAS RESET UNUSED MIRROR BIAS RESET TEST CLEAR PINS(NORMAL GND) A-CHANNEL SERIAL DATA OUT DURING SPAM READ TEST OPERATION B-CHANNEL SERIAL DATA OUT DURING SPAM READ TEST OPERATION MANUFACTORING TEST POINT(NO CONNECTED DURING NORMAL OPERATION) RESERVED PINS(NORMAL:GND) REFERENCE VOLTAGE DURING SPAM READ TEST OPERATION(NORMAL GND) MIRROR ELECTRODE VOLTAGE(7.3V) LOGIC SUPPLY LOGIC GROUND
13-3-4 Engine Failure Inspection Flow Chart for the DMD Board
No. 1 Description 1) When the power cord is plugged in, 2) DC220V~410V(typical 300V) is automatically supplied to the ballast. 1) When the power key is pressed via the remote control, the micom of the analog board outputs high (5V) PWR signals. 2) The power board operates normally. 5V and 12V are supplied to the DMD CN105 terminal. 1) The MTR Reset signal is supplied to the R161 terminal of the motor IC101 from the micom on the digital board and then the motor starts to drive. 2) If the color wheel rotates for a certain time and then stops, check whether the color wheel sensor is normal. (Check the waveform on the No.2 terminal below CN102.) 1) Check whether the signal (SCI: START CONTROL INPUT) that turns on lamp #2 of CN109 on the DMD board is high (5V). Key Point Check whether the DC220V~410V(typical 300V) power is supplied to the ballast. Check whether 5V and 12V are supplied to the CN105 terminal. After the set is powered on, check whether 5V is detected on pin No.49 of IC101. After a while, the sound generated by the rotating color wheel is heard. 12V must be supplied to operate the motor. Remark
2
3
If 5V is not detected, the motor will not operate.
4
5
1) Method for checking whether the DDP1010 IC RESET is normal.
When SCI is high (5V), the lamp litz Check whether CN109 #2 signal is of CN109 is low (0V). 5V. CN109 #2 terminal voltage changes to pulse wave form 14 seconds after (for 50 inch TV) the time that the voltage is 5V. * When about 4 seconds have passed If the voltage between R254 and after changing to pulse waveform, the R255 is 3V, it is normal. screens are displayed on the set.
Samsung Electronics
13-7
Circuit Description
13-3-5 IC Line Up
1. Main Board Items Descriptions Albatross (S5H2201) CPU & MPEG Albatross DDR Memory (32MB x 4) Albatross DDR Memory (32MB x 2) Albatross Flash Shrink (256MB) SDP62 IPC & Scaler TMDS DCDC Decoder & 3D Comb Micom Audio Processor Sound AMP VSB Nim Tuner Video Switch Audio Switch HDMI Receiver & ADC HDMI Switch SDP62 Memory FBGA Shrink (128MB x 2) Sil7170 SC4521 : 1V MP1583 (3V/5V/3.3V/1.3V) x 5 CXD3815Q S3F84BBXZZ, Samsung MSP4450K, Micronas NTP3000 DNVS227IV262B TEA6425, SGS-Thomson MM74HC4052M, PHILIPS MST3369M , Mstar TDMS341, TI Video Switch IC for TV * 2 Audio Switch IC for TV MST3369M , Mstar HDMI Switch , TI Micro Controller Digital Audio Decoder Digital AMP iTMDS Transmitter, 10bit DCDC Converter IPC & Scaler & Picture Enhance Remarks 2MPEG, 2IPC, 3Scaler, AC3-Decod, 32bit Graphic, 2TS 1n, 1TS out,2ch 32bit DDR, 30bit in, 30bit out (10bit proc.) ATSC Only Model Memory 128MB POD Model (Full Model) 192MB
2. Main SMPS Items Multi SMPS Stand-by SMPS Descriptions KA5Q0765RT,Fairchild Viper12A, STMicroelectronics. Remarks IC-PWM Controller ; Main Power IC-PWM Controller ; Stand-by Power
3. Sub SMPS Items 16VB SMPS 12VA SMPS Descriptions MC33067,Onsemiconductor Viper22A, STMicroelectronics. Remarks IC-PWM Controller ; Main Power IC-PWM Controller ; 12VA
13-8
Samsung Electronics
Circuit Description
4. DMD Board Items DMD Driver Reset, Power Motor Controller Frame Buffer Spread Spectrum Clock Generator Program ROM Actuator Driver AD Converter TMDS Receiver Color Calibration Descriptions DDP3021, TI DAD2000, TI PMD1000, TI MT49H8M36BM-TI, Micron ICS650-41, ICS M29W800BT x 2, ST DDP3021, TI AD7801BRU SiI7171,Silicon Image TMS320F2801PZA, TI DLP Data Processor DMD Power and Reset Driver 12V VCM/Spindle Pre-Driver, Power Supply(2.5V,3.3V,1.5V) 128M(246K x 16 x 32B), Rambus DRAM 50Mhz Spread Spectrum Clock Generator 8M(1M x 8 or 512K x 16), Flash Memory DLP Data Processor Actuator Drive , 60Hz TMDS Digital Receiver, 75MHz DSP ASIC IC, 1.8V, Data Calibration Remarks
Samsung Electronics
13-9
Circuit Description
13-3-6 K780 Engine Ass'y
13-10
Samsung Electronics
Circuit Description K780 Engine Exploded View List No. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 Description ASSY ENGINE P-DLP ASSY PCB S-RMC COVER-DUST COVER-DUST RIGHT COVER-DUST LEFT BASE-PROJECTION ASSY LENS P-PROJECTION MODULE FAN-DMD BRACKET-FAN FAN-LOCK RUBBER-FAN BRACKET-ENGINE BASE ASSY DMD BOARD BRACKET-MIRROR BRACKET-F/MIRROR (L) BRACKET-FOCUS GLASS-FRONT FOLDING MIRROR HOLDER-FOLDING MIRROR BRACKET-F/MIRROR (R) ASSY MISC-THERMOSTAT COVER-DUCT TOP FAN-DC RUBBER-FAN COVER-MIDDLE HOLDER-BALLAST COVER-DUCT BOTTOM LAMP-BALLAST COVER-FAN COVER-DUCT RIGHT COVER-DUCT LEFT ASSY LENS P-ILLUMIANTION HOLDER-LAMP BRACKET-LAMP BRACKET-LAMP LAMP BRACKET-HINGE TOP COVER-LAMP HANDLE-LAMP BRACKET-HINGE BOTTOM Specification K780 PCB GLASS T3.0 PC G/F 20% T2.5 PC G/F 20% T2.5 MG D/C T1.8 LENS ASSY 60*60 SECC T1.0 PH ¥õ7 SILICON SECC T1.6 PCB AL D/C T1.0 SUS T0.3 MG D/C T3.0 GLASS T1.1 MG D/C T2.0 SUS T0.3 PCB PC G/F 20% T2.5 80*80 SILICON PC G/F 20% T2.5 PC G/F 20% T2.5 PC G/F 20% T2.5 EUC 132D P/42 132W PS T2.5 PC G/F 20% T2.5 PC G/F 20% T2.5 LENS ASSY PPS G/F 30% T2.5 SUS T0.5 SUS T0.5 UHP 120W/132W 1.0 E22 SECC T1.0 PPS G/F 30% T2.5 PPS G/F 30% T2.5 SUS T2.0 Q'ty 1 1 1 1 1 1 1 1 1 4 4 1 1 1 1 1 1 1 1 1 1 1 2 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1
Samsung Electronics
13-11
MEMO
13-12
Samsung Electronics