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Related Manuals for Philips DPTV400 Series
Summary of Contents for Philips DPTV400 Series
- Page 1 PHILIPS PHILIPS SERVICE AND QUALITY DPTV400 SERIES HD PTV TRAINING MANUAL PHILIPS TECHNICAL TRAINING/QUALITY P H I L I P S ONE PHILIPS DRIVE TECH PO BOX 14810 KNOXVILLE, TN 37914-1810 PHONE: 865-521-4397 FORCE TRAIN FAX: 865-521-4818 M A N U A L S...
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Page 2: Table Of Contents
Table of Contents Introduction Set Operation Highlights........................2 Picture formats ..........................3 Native format..........................3 4x3 format ..........................3 Panoramic format........................3 Zoom feature..........................3 Tuning the ATSC channels ......................4 Overall Power Block ........................8 AC Input............................9 Standby Power Supply ........................9 Main Power Supply ........................10 Power Fail detection circuit ......................13 ATSC Power Interface for HD version...................14 Epic Power Interface ........................15 Horizontal Output circuit .......................16... - Page 3 Customer Service Mode ......................61 Service Default Mode ........................62 Service Alignment Mode (SAM) ....................62 Manual Alignment of the HD_DW module..................63 Equipment required ........................64 Offset Adjustments ........................64 Gain Adjustments ..........................64 Gray Scale Alignment ........................65 Error Codes..........................66 Convergence Mode ........................69 Touch Up Convergence.......................70 Green Geometry..........................70 Glossary of Terms..........................72...
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Page 4: Introduction
Introduction The IHDTV2K4 is designed to be marketed in the 2004 model year. This set has a fully integrated ATSC/NTSC tuning system. This set will tune all of the channels in the NTSC, ATSC, and Cable bands. There are two RF inputs that are for Cable and Antenna. The set comes in three versions: the HD, Epic, and Epic Plus. -
Page 5: Set Operation Highlights
Set Operation Highlights Figure 1 shows an outline of the Customer menus. Listed below are some of the differences from previous Philips Projection sets. In the Picture menu selection, there are the normal controls, Brightness, etc. The COLOR TEMP selection shifts the color balance of the picture when selected by the Customer. The Warm setting shifts the white balance to the Red. -
Page 6: Picture Formats
Picture formats Unlike previous sets, the Picture format can be changed without regard to the input. Native format The Native format fills the set’s 16 x 9 screen. If the source picture is in the 4 x 3 format, the set will stretch the picture to fill the 16 x 9 screen. -
Page 7: Tuning The Atsc Channels
Tuning the ATSC channels When the Autoprogram is selected (see Figure 1), both the ATSC and NTSC channels are tuned. When the Info button is pressed on the Remote, an information box will appear as show below. The channel number is shown in the left part of the box. - Page 8 Figure 2 shows the Jack Panel for the HD version. AV1 and AV2 inputs and the Side Jack panel (not shown) are for the NTSC 1Fh input only. AV3 can accept Component or RGB 1Fh, 480p, 720p, or 1080i inputs. AV4 can accept Component 1Fh, 480p, 720p, or 1080i inputs. AV5 is a HDMI digi- tal input.
- Page 9 FIGURE 3 - EPIC REAR JACK PANEL Page 6...
- Page 10 POWER INTERFACE PANEL FOCUS BLOCK (FG2) ATSC PANEL HD-DW AC INPUT BOARD LOCATIONS Page 7...
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Page 11: Overall Power Block
Overall Power Block (Figure 4) AC power is input to the set via the AC Input panel. The AC Input panel produces the raw DC for the Main supply located on the LSB (Large Signal Board) and the Standby supply located on the AC Input panel. -
Page 12: Ac Input
AC Input (Figure 5) AC power is applied to the to the AC Input panel via connector 1206. A series of spark gaps and capacitors protect the set from damage due to excessive voltage spikes on the AC line. Filter choke 5000 prevents switch mode noise generated by the set from entering the AC power system, causing interference with other electrical devices. -
Page 13: Main Power Supply
transistors 7216 and 7220 On to switch the +9-volt and +5.2-volt supplies to the set. When troubleshooting, check for the presence of the operating voltage on Pin 7 of 7218. This is approximately 160 volts DC. If the Feedback circuit is not working or the secondary is overloaded, Pin 7 will be pulsing. -
Page 16: Power Fail Detection Circuit
Power Fail detection circuit (Figure 8) To prevent software problems in the set, the Power Fail detection signals the Processor on the SSB to place the set in a shutdown state if power is removed while the set is turned On. In addition, the CRT drive is blanked to prevent phosphor damage to the CRTs. -
Page 17: Atsc Power Interface For Hd Version
ATSC Power Interface for HD version (Figure 9) The ATSC Power Interface module produces the operating voltages for the ATSC module. The +15, 3.5, 4.5, and 5.2-volt supplies from the AC Input panel are fed to the Interface module. The Processor on the SSB provides a On/Off command to switch the outputs. -
Page 18: Epic Power Interface
Epic Power Interface (Figure 10) The ATSC module for the Epic version requires some additional supplies. There are three 1.2, two 3.3, two 2.5, two 12, and two 5-volt supplies. The DAM_CNTL is switched Low by the microprocessor located on the SSB when the set is turned On. Transistor 7201 is turned Off which turns 7202 Off. Transistors 7208 and 7203 are switched Off. -
Page 19: Horizontal Output Circuit
Horizontal Output circuit (Figure 11) Horizontal drive from the HOP circuit on the SSM is fed to 7807 on the Large Signal panel. Transistor 7807 drives the Horizontal Output Transistor 7801, which drives the Yokes and the Horizontal Output Transformer 5801. Transformer 5801 produces a plus and minus 13-volt supply for the Vertical Output circuit. -
Page 23: Sweep Failure Detection And Blanking
Sweep Failure detection and Blanking (Figure 14) The Shutdown circuit will shut the High voltage Off if the Horizontal or Vertical Sweep should fail. It will also shut the High voltage Off if the Power Fail line goes High or the +200-volt source should fail. The Vertical pulse is fed to zener diodes 6824 and 6814, which keep capacitor 2837 charged. -
Page 24: Video Signal Flow Block
Video Signal Flow block (Figure 15) The Tuning system will tune all of the channels in the ATSC, NTSC, and Cable bands. Whichever channel is selected by the Customer, the video signal is converted to a Digital 8-bit TMDS signal. This signal is fed to the Scaler IC on the HD/DW panel. -
Page 28: Ntsc Ssb Processing
NTSC SSB Processing (Figure 18) Composite video or YC from the SSM is fed to the HIP, 7323, located on the SSB. The Composite or Y signal is input on Pin 20 and the Chrominance or C is input on Pin 21. If the input is a YC, SVHS signal, the Y is fed to the Delay and the C is fed to the Demodulator. - Page 29 Page 26 FIGURE 18 - NTSC SSB SIGNAL PROCESSING...
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Page 33: Hd-Dw Module Signal Flow
HD-DW module signal flow (Figure 21) The AV3 and AV4 inputs located on the HD-DW module are fed to 7100 for selection. The selected Y Pb Pr or RGB signal is fed to an A/D converter, 7400. The YUV signal from the SSB is fed to a YUV to Y Pb Pr converter and then to 7400. -
Page 34: Yuv To Y Pb Pr Converter
FIGURE 22 - YUV TO Y Pb Pr CONVERTER YUV to Y Pb Pr Converter (Figure 22) To obtain the proper color match, the input of the A/D converted on the HD_DW panel must be in the Y Pb Pr format. To accomplish this, the UV (Blue Red) signals must be phase inverted. The Y or Luminance signal is buffered by transistor 7207. -
Page 36: Av3 And Av4 Inputs And Switching
AV3 and AV4 Inputs and Switching (Figure 23) The input to AV3 can be either in the Y Pb Pr or RGB formats. The sync for the RGB format can be separate Horizontal and Vertical or Sync on Green. The Component Y Pb Pr connected to AV3 or AV4 can be a 1 fH (480i), 2 fH (480p), 720p, or 1080i signal. -
Page 37: Scaler Block
FIGURE 24 - SCALER BLOCK DIAGRAM Scaler Block (Figure 24) There are two input ports to the Scaler IC, A and B. The two 24 bit video inputs are fed to a Multiplexer. The Multiplexer selects the picture information for the main picture and the Picture in Picture. -
Page 39: Ssm Video Drive
SSM video drive (Figure 25) The Y/G, B/Pb, and R/Pr signals are fed to their respective sharpness controls. If the input is a YUV signal, the Y signal is fed to Pin 28 of 7600. The U and V signals are fed to the Tint Control circuit and then to Pins 27 and 26 of 7600. -
Page 40: Sharpness Control
Sharpness Control (Figure 26) The Sharpness controls for the YUV/RGB signals are located on the SSM. Since all three circuits are basically the same, only the Blue one will be discussed. The Blue signal is fed to Pin 1 of 7410. It is also fed to a Low Pass filter consisting of 5411 and 5410. - Page 42 Page 39 FIGURE 27 - TINT CONTROL...
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Page 44: Hop Io
HOP IO (Figure 29) IC 7800 develops the analog control voltage for the HOP circuit. The I2C bus from the GDE micro- processor controls the IC. This IC is located on the SSM. FIGURE 29 - HOP I/O CRT panel (Figure 30) The Red, Green, and Blue signals from the HOP panel are fed to their respective CRT panel. -
Page 46: Audio Signal Flow
Audio Signal flow (Figure 31) Audio inputs for AV3, AV4, and AV5 located on the HD-DW module are fed to Switch 7101. The selected outputs are fed to 7017, located on the SSM. IC 7017 selects between the output of 7101, AV1, AV2, and the Side Jack panel. -
Page 50: Shutdown Mute
Shutdown Mute (Figure 34) The Audio Amplifier will be placed in a Standby mode and the set will shut down if a DC voltage is detected on the Speaker Output lines. The Left and Right audio output lines are connected to the base of 7704 and the emitter of 7705 via resistors 3718 and 3717. -
Page 51: Convergence Processor
Intellisense Convergence correction (Figure 36) The Intellisense system is only used in the Epic version. The Philips Intellisense system makes minor Convergence corrections when the fea- ture is selected by the Customer. When a PTV... -
Page 54: Convergence Horizontal Output
Convergence Horizontal Output (Figure 38) IC 7044 amplifies the Horizontal convergence waveforms. The correction waveforms are fed to the IC on Pins 6, 14, and 15. They are output to the Convergence Yokes on Pins 9, 11, and 18. The IC is powered by four supply inputs. -
Page 57: Set Control And I2C Busses
Set Control and I2C Busses (Figure 40) Commands to the set by the Consumer are sent via the Keyboard and Remote Control to the Painter (Microprocessor), 7001, located on the SSB. The Painter sends commands to the ATSC Digital Decoder on the SDA-S line via the SSM. The Digital Decoder controls the Tuner, Sound Processor, and other devices on the ATSC module. -
Page 60: Troubleshooting
Troubleshooting (Figure 42) When power is applied to the set via the AC Input panel, the 5-volt standby voltage should be pre- sent on Pin 3 of 1203 on the AC Input panel. The RAW DC and Startup voltage should be present on Pins 5 and 3 of connector 1500. -
Page 61: Audio Problems
ing, check for Vertical and Horizontal drive to the LSB from the SSM. Vertical drive can be checked with an oscilloscope on Pins 3 and 4 of connector 1510 on the LSB. Horizontal drive can be checked on Pin 9 of 1510. If the G2 voltage is missing, and Horizontal and Vertical drive is present, the LSB should be repaired or replaced. - Page 62 FIGURE 42 - WIRING INTERCONNECT Figure 59...
- Page 63 CONNECTORS IN SERVICE VIEW WAVEFORMS MEASURED USING A SENCORE VP300 CONNECTED TO AV4. Y from HD-DW module measured on Pin 1 of 1411. Pb from HD-DW module measured on Pin 3 of 1411. CONNECTOR LOCATIONS - REAR VIEW Pr from HD-DW module measured on Pin 5 of 1411.
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Page 64: Service Modes
SERVICE MODES Customer Service Mode (CSM) (Figure 43) The Customer Service Mode allows the Customer to read information from the set when instructed by the Service Technician. The set must be operational for this to occur. This mode defeats any Service Unfriendly features which would cause a service call due to a Customer Operation problem. -
Page 65: Service Default Mode
SERVICE DEFAULT MODE (SDM) The Service Default Mode is used to put the TV into a predefined state to aid in testing or problem diagnosis. The following occurs in the SDM. A pre-defined situation for measurements is created. Software protections are overridden when the SDM is accessed by shorting the SDM pins on the chassis. -
Page 66: Manual Alignment Of The Hd_Dw Module
software version of the processor on the SSB. Error Codes and Option Codes are shown on lines three and four. Line two (WDT) is a Watch Dog Timer which reads 0 (zero) for normal operation. If an error is detected by the Processor on the SSB, all the processors in the set will be reset. The WDT records the number of times this has occurred. -
Page 67: Equipment Required
Equipment required VP300 Sencore generator or better 100 MHz Oscilloscope Set the Sencore generator to 720p Y Pb Pr output. Connect the Y Pb Pr signals to AV3.Put the chassis in the service position. Select Color Bars as the display. Connect channel one of the oscilloscope in parallel with the Y input. -
Page 68: Gray Scale Alignment
Repeat the Offset Adjustment as they may have shifted slightly. Set the remaining registers as follows. RGB-R Gain = YPbPr-R Gain RGB-G Gain = YPbPr-G Gain RGB-B Gain = YPbPr-B Gain RGB-R Offset = YPbPr-R Offset - 55 RGB-G Offset = YPbPr-G Offset RGB-B Offset = YPbPr-B Offset - 55 Gray Scale Alignment The GDE menu is used to to adjust Gray Scale (White Tone) and Geometry. -
Page 69: Error Codes
10. Apply a Gray Scale pattern to the set. 11. Adjust the Red and Green drives to remove the color from the lighter parts of the picture. 12. Adjust the Red and Green cutoffs to remove the color from the darker (black) parts of the pic- ture. - Page 70 HD-DW - HDMI error (I2C)*1 HD-DW - NVM error *1 PEMG - HIP I/O video processing error PEMG - HDM No Communication error HDM - Output error *2 HDM - Reset error *2 HDM - Tuner error (I2C)*2 HDM - Demodulator error (I2C)*2 HDM - 3D-Comb Filter error (I2C)*2 HDM - NTSC Video Decoder error (I2C)*2 HDM - NTSC Audio Decoder error (I2C)*2...
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Page 72: Convergence Mode
Convergence, a template must be used. There is only one Geometry and Convergence setting stored in the EEPROM on the SSM for the DPTV400 series. Whatever signal is applied to the set, the picture is displayed in a 1080i format. -
Page 73: Touch Up Convergence
Use the Cursor Up-Down button to highlight the selection. Press the Cursor Right button to make the selection. In the second menu, MANUAL CONVERGENCE WO VIDEO means that the screen behind the adjustment grid will be blank. This does not mean that Convergence can be performed without a signal being applied to the set. - Page 74 made in small steps. Do not adjust any one point more than 1/4 the distance of one grid in each pass. After the left most line is adjusted, start at the center left of the screen and work to the right, aligning the Horizontal lines.
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Page 75: Glossary Of Terms
Glossary of terms TMDS Transmission Minimized Differential Signalling (Used for DVI, HDMI). Digital Visual Interface HDCP High Definition Content Protection HDMI High Definition Multimedia Interface HD-DW High Definition Double-Window NTSC National Television Systems Committee - Refers to the broadcast which has an odd and even field of 262 lines each with 525 lines per frame. - Page 76 Glossary of terms (continued) European format for Y R-Y B-Y. Y is the Luminance, U is the Blue signal, and V is the Red signal. Y Pb Pr Analog component video consisting of a Y (Luminance), Pb (Blue), and Pr (Red) signal. All three components are necessary to create a complete color picture.
- Page 78 MMARTIN 04/13/04...