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P/N : TCP650FEF0

Service Manual
COLOR Television

CHASSIS :CP-650
Model :DTL-2950
DTL-2950K DTL-2950GB

Caution
: In this Manual, some parts can be changed for improving. their performance without notice in the parts list. So, if you need the latest parts information, please refer to PPL(Parts Price List)in Service Information Center.

APR.2006

CP-650 Service Manual CONTENTS DOCUMENT HISTORY .................................................................................................................3 1 MAIN FEATURES ..................................................................................................................4 1.1 SPECIFICATIONS ..........................................................................................................4 1.1.1 GENERAL ................................................................................................................4 1.1.2 EURO-SCART 1 (21 Pin) .........................................................................................4 1.1.3 EURO-SCART 2 (21 Pin) .........................................................................................5 1.2 CHANNEL/FREQUENCY TABLE...................................................................................6 SAFETY INSTRUCTION ........................................................................................................9 ALIGNMENT INSTRUCTIONS.............................................................................................10 3.1 MICROCONTROLLER CONFIGURATION : SERVICE MODE ....................................10 3.2 SERVICE MODE NAVIGATION....................................................................................10 3.3 MICROCONTROLLER CONFIGURATION : OPTION BITS ........................................11 3.4 OPTION 1......................................................................................................................11 3.5 OPTION 2......................................................................................................................11 3.6 NVM DEFAULT SETTING ............................................................................................12 3.7 TV SET ALIGNMENT....................................................................................................14 3.7.1 G2 ALIGNMENT.....................................................................................................14 3.7.2 WHITE BALANCE ..................................................................................................14 3.7.3 FOCUS...................................................................................................................14 3.7.4 VERTICAL GEOMETRY ........................................................................................14 3.7.5 HORIZONTAL PICTURE CENTRING ....................................................................14 3.7.6 EAST / WEST CORRECTION................................................................................14 3.7.7 AGC........................................................................................................................15 IC DESCRIPTION.................................................................................................................16 4.1 UOC III SERIES..............................................................................................................16 4.1.1 IC MARKING AND VERSION ................................................................................16 4.2 TDA8946J STEREO AUDIO AMPLIFIER.....................................................................24 4.2.1 FEATURES ............................................................................................................25 4.3 TDA8358J VERTICAL AMPLIFIER ..............................................................................27 4.3.1 TDA8358J ..............................................................................................................27 4.4 TDA6107AJF ................................................................................................................29 4.4.1 Features .................................................................................................................29 4.4.2 Pin description........................................................................................................29 4.5 24WC16 - 16 KB EEPROM...........................................................................................30 4.6 STR W6754 ................................................................................................................31 4.6.1 GENERAL DESCRIPTION.....................................................................................31 4.6.2 FEATURES ............................................................................................................31 4.6.3 BLOCK DIAGRAM .................................................................................................31 4.6.4 PIN DESCRIPTION ................................................................................................32 4.6.5 MOSFET ELECTRICAL CHARACTERISTICS.......................................................32 4.6.6 ELECTRICAL CHARACTERISTICS.......................................................................33 CIRCUIT DESCRIPTION......................................................................................................34 5.1 BLOCK DIAGRAM........................................................................................................34 5.2 FUNCTIONAL DESCRIPTION OF VIDEO PROCESSOR ............................................35 5.2.1 Vision IF amplifier ...................................................................................................35 5.2.2 QSS sound circuit...................................................................................................35 5.2.3 FM demodulator .....................................................................................................35 5.2.4 Audio input selector and volume contro..................................................................36 1

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CP-650 Service Manual 5.2.4.1 STEREO AND AV STEREO VERSIONS............................................................36 5.2.4.2 MONO VERSIONS .............................................................................................36 5.2.5 CVBS and Y/C input signal selection......................................................................36 5.2.5.1 ALL VERSIONS ..................................................................................................36 5.2.6 Synchronisation circuit............................................................................................37 5.2.7 Horizontal and vertical drive ...................................................................................38 5.2.8 Chroma, luminance and feature processing ...........................................................38 5.2.9 Colour decoder.......................................................................................................39 5.2.10 RGB output circuit ..................................................................................................40 5.2.11 I2C-BUS USER INTERFACE DESCRIPTION........................................................42 5.3 GENERAL DESCRIPTION OF THE TV SOUND OF SOUND PROCESSOR ..............42 5.3.1 Supported standards ..............................................................................................43 5.4 FUNCTIONAL DESCRIPTION SOUND PROCESSOR ................................................44 5.4.1 The UOC III TV Sound Concept .............................................................................44 5.4.2 Functional Overview Of the digital controller sound part ........................................45 5.4.3 Demodulator and decoder ......................................................................................46 6 7 8 SERVICE PARTS LIST ........................................................................................................49 6.1 DTL-2950 ......................................................................................................................49 EXPLODED VIEW................................................................................................................68 7.1 DTL-2950 ......................................................................................................................68 PRINTED CIRCUIT BOARD ................................................................................................69 8.1 PCB MAIN(4859812493)...............................................................................................69 8.2 PCB SUB)4859816424)................................................................................................ 70 SCHEMATIC DIAGRAM ......................................................................................................71

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CP-650 Service Manual DOCUMENT HISTORY VERSION DATE COMMENTS V1.00 28/03/06 Creation of document (Author JS KIM) for project CP650 50Hz SLIM TV.

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CP-650 Service Manual 1 1.1 MAIN FEATURES SPECIFICATIONS

1.1.1 GENERAL TV standard Colour system Sound system Power consumption Sound Output Power Speaker Teletext system Aerial input Channel coverage Tuning system Visual screen size Channel indication Program Selection Aux. terminal PAL - SECAM B/G D/K, PAL I/I, SECAM L/L' Tuner PAL, SECAM AV PAL, SECAM, PAL 60, NTSC M, NTSC 4.43 NICAM B/G, I, D/K, L, FM 2Carrier B/G, D/K 105W 7W x 2 (at 60% mod, 10%THD) 12W 8 ohm x2 10 pages memory FASTEXT (FLOF or TOP) 75 ohm unbalanced Off-air channels, S-cable channels and hyperband frequency synthesiser tuning system 68cm On Screen Display 100 programmes EURO-SCART 1 : Audio / Video In and Out, R/G/B In, Slow and Fast switching. EURO-SCART 2 : Audio / Video In and Out, SVHS In. AV3 : Audio-Video Jack on front of cabinet. Headphone jack (3.5 mm) on front of cabinet SVHS3 : Jack on side of cabinet sound input common with AV3. R-49C10

Remote Control Unit 1.1.2 EURO-SCART 1 (21 Pin) Pin 1 2 3 4 5 6 7 8 9 10 Signal Description Audio Output Right Audio Input Right Audio Output Left Audio Earth Blue Earth Audio Input Left Blue Input Slow Switching Green Earth N.C.

Matching value 0.5 Vrms, Impedance < 1 k, ( RF 54% Mod ) 0.5 Vrms, Impedance > 10 k 0.5 Vrms, Impedance < 1 k, ( RF 54% Mod )

0.5 Vrms, Impedance > 10 k 0.7 Vpp ±0.1V, Impedance 75 TV : 0 to 2V, AV 16/9 : 4.5 to 7V, AV 4/3 : 9.5 to 12V , Impedance > 10 k

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CP-650 Service Manual 11 12 13 14 15 16 17 18 19 20 21 Green Input N.C. Red Earth Blanking Earth Red Input Fast Switching Video Out Earth Video In Earth Video Output Video Input Common Earth 0.7 Vpp ± 0.1V, Impedance 75

0.7 Vpp ± 0.1V, Impedance 75 0 to 0.4V : Logic "0", 1 to 3V : Logic "1", Impedance 75 1 Vpp ± 3dB, Impedance 75 1 Vpp ± 3dB, Impedance 75

1.1.3 EURO-SCART 2 (21 Pin) Pin 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 Signal Description Audio Output Right Audio Input Right Audio Output Left Audio Earth Earth Audio Input Left N.C. N.C. N.C. N.C. N.C. N.C. Earth Earth Chroma Input N.C. Earth Video In Earth Video Output Video Input, Y In. Common Earth Matching value 0.5 Vrms, Impedance < 1 k, ( RF 54% Mod ) 0.5 Vrms, Impedance > 10 k 0.5 Vrms, Impedance < 1 k, ( RF 54% Mod )

0.5 Vrms, Impedance > 10 k

± 3dB for a luminance signal of 1 Vpp

1 Vpp ± 3dB, Impedance 75 ( Monitor output ) 1 Vpp ± 3dB, Impedance 75

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1.2

CHANNEL/FREQUENCY TABLE EUROPE CCIR 46.25 48.25 55.25 62.25 175.25 182.25 189.25 196.25 203.25 210.25 217.25 224.25 53.75 82.25 183.75 192.25 201.25 471.25 479.25 487.25 495.25 503.25 511.25 519.25 527.25 535.25 543.25 551.25 559.25 567.25 575.25 583.25 591.25 599.25 607.25 615.25 623.25 631.25 639.25 647.25 655.25 663.25 FRANCE 55.75 (L') 60.5 (L') 63.75 (L') 176.00 184.00 192.00 200.00 208.00 216.00 189.25 (LUX) 69.25 (L') 76.25 (L') 83.25 (L') 90.25 97.25 471.25 479.25 487.25 495.25 503.25 511.25 519.25 527.25 535.25 543.25 551.25 559.25 567.25 575.25 583.25 591.25 599.25 607.25 615.25 623.25 631.25 639.25 647.25 655.25 663.25 GB(IRELAND) 45.75 53.75 61.75 175.25 183.25 191.25 199.25 207.25 215.25 223.25 231.25 239.25 247.25 49.75 57.75 65.75 77.75 85.75 471.25 479.25 487.25 495.25 503.25 511.25 519.25 527.25 535.25 543.25 551.25 559.25 567.25 575.25 583.25 591.25 599.25 607.25 615.25 623.25 631.25 639.25 647.25 655.25 663.25 EAST OIRT 49.75 59.25 77.25 85.25 93.25 175.25 183.25 191.25 199.25 207.25 215.25 223.25 471.25 479.25 487.25 495.25 503.25 511.25 519.25 527.25 535.25 543.25 551.25 559.25 567.25 575.25 583.25 591.25 599.25 607.25 615.25 623.25 631.25 639.25 647.25 655.25 663.25 6

CHANNEL C01 C02 C03 C04 C05 C06 C07 C08 C09 C10 C11 C12 C13 C14 C15 C16 C17 C18 C19 C20 C21 C22 C23 C24 C25 C26 C27 C28 C29 C30 C31 C32 C33 C34 C35 C36 C37 C38 C39 C40 C41 C42 C43 C44 C45

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CP-650 Service Manual C46 C47 C48 C49 C50 C51 C52 C53 C54 C55 C56 C57 C58 C59 C60 C61 C62 C63 C64 C65 C66 C67 C68 C69 C70 C71 C72 C73 C74 C75 C76 C77 S01 S02 S03 S04 S05 S06 S07 S08 S09 S10 S11 S12 S13 S14 S15 S16 S17 DTV R&D Europe 671.25 679.25 687.25 695.25 703.25 711.25 719.25 727.25 735.25 743.25 751.25 759.25 767.25 775.25 783.25 791.25 799.25 807.25 815.25 823.25 831.25 839.25 847.25 855.25 863.25 69.25 76.25 83.25 90.25 97.25 59.25 93.25 105.25 112.25 119.25 126.25 133.25 140.25 147.25 154.25 161.25 168.25 231.25 238.25 245.25 252.25 259.25 266.25 273.25 671.25 679.25 687.25 695.25 703.25 711.25 719.25 727.25 735.25 743.25 751.25 759.25 767.25 775.25 783.25 791.25 799.25 807.25 815.25 823.25 831.25 839.25 847.25 855.25 863.25 104.75 116.75 128.75 140.75 152.75 164.75 176.75 188.75 200.75 212.75 224.75 236.75 248.75 260.75 272.75 284.75 296.75 671.25 679.25 687.25 695.25 703.25 711.25 719.25 727.25 735.25 743.25 751.25 759.25 767.25 775.25 783.25 791.25 799.25 807.25 815.25 823.25 831.25 839.25 847.25 855.25 863.25 103.25 111.25 119.25 127.25 135.25 143.25 151.25 159.25 167.25 255.25 263.25 271.25 279.25 287.25 671.25 679.25 687.25 695.25 703.25 711.25 719.25 727.25 735.25 743.25 751.25 759.25 767.25 775.25 783.25 791.25 799.25 807.25 815.25 823.25 831.25 839.25 847.25 855.25 863.25 105.25 112.25 119.25 126.25 133.25 140.25 147.25 154.25 161.25 168.25 231.25 238.25 245.25 252.25 259.25 266.25 273.25 7

CP-650 Service Manual S18 S19 S20 S21 S22 S23 S24 S25 S26 S27 S28 S29 S30 S31 S32 S33 S34 S35 S36 S37 S38 S39 S40 S41 280.25 287.25 294.25 303.25 311.25 319.25 327.25 335.25 343.25 351.25 359.25 367.25 375.25 383.25 391.25 399.25 407.25 415.25 423.25 431.25 439.25 447.25 455.25 463.25 136.00 160.00 303.25 311.25 319.25 327.25 335.25 343.25 351.25 359.25 367.25 375.25 383.25 391.25 399.25 407.25 415.25 423.25 431.25 439.25 447.25 455.25 463.25 295.25 303.25 311.25 319.25 327.25 335.25 343.25 351.25 359.25 367.25 375.25 383.25 391.25 399.25 407.25 415.25 423.25 431.25 439.25 447.25 455.25 463.25 280.25 287.25 294.25 303.25 311.25 319.25 327.25 335.25 343.25 351.25 359.25 367.25 375.25 383.25 391.25 399.25 407.25 415.25 423.25 431.25 439.25 447.25 455.25 463.25

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SAFETY INSTRUCTION

WARNING: Only competent service personnel may carry out work involving the testing or repair of this equipment. X-RAY RADIATION PRECAUTION 1. Excessive high voltage can produce potentially hazardous X-RAY RADIATION. To avoid such hazards, the high voltage must not exceed the specified limit. The nominal value of the high voltage of this receiver is 28.5KV at max beam current. The high voltage must not, under any circumstances, exceed 30 KV. Each time a receiver requires servicing, the high voltage should be checked. It is important to use an accurate and reliable high voltage meter. 2. The only source of X-RAY Radiation in this TV receiver is the picture tube. For continued X-RAY RADIATION protection, the replacement tube must be exactly the same type tube as specified in the parts list. SAFETY PRECAUTION Potentials of high voltage are present when this receiver is operating. Operation of the receiver outside the cabinet or with the back board removed involves a shock hazard from the receiver. Servicing should not be attempted by anyone who is not thoroughly familiar with the precautions necessary when working on high voltage equipment. Discharge the high potential of the picture tube before handling the tube. The picture tube is highly evacuated and if broken, glass fragments will be violently expelled. If any Fuse in this TV receiver is blown, replace it with the FUSE specified in the Replacement Parts List. When replacing a high wattage resistor (metal oxide film resistor) in the circuit board, keep the resistor 10 mm away from circuit board. Keep wires away from high voltage or high temperature components. This receiver must operate under AC 230 volts, 50 Hz. NEVER connect to a DC supply or any other voltage or frequency. PRODUCT SAFETY NOTICE Many electrical and mechanical parts in this equipment have special safety-related characteristics. These characteristics are often passed unnoticed by a visual inspection and the X-RAY RADIATION protection afforded by them cannot necessarily be obtained by using replacement components rated for higher voltage, wattage, etc. Replacement parts which have these special safety characteristics are identified in this manual and its supplements, electrical components having such features are identified by designated symbol on the parts list. Before replacing any of these components, read the parts list in this manual carefully. The use of substitutes replacement parts which do not have the same safety characteristics as specified in the parts list may create X-RAY Radiation.

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CP-650 Service Manual 3 3.1 ALIGNMENT INSTRUCTIONS MICROCONTROLLER CONFIGURATION : SERVICE MODE

To switch the TV set into service mode please see instruction below. 1 - Select PR. number 91 2 - Adjust sharpness to minimum and exit all menus. 3 Within 2 seconds press the key sequence : RED - GREEN - menu The software version is displayed beside the word Service, e.g. "SERVICE VER 01.44". To exit SERVICE menu press menu key or Std By key. 3.2 SERVICE MODE NAVIGATION

Pr Up/Down remote keys : cycle through the service items available. Vol -/+ remote keys : Dec./Increment the values within range Cycle trough option bits. OK key : Toggle bits in option byte

Order 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24

Setting In Indication Note : All settings are approximate HOR CEN RED GAIN GRN GAIN BLUE GAIN RED BIAS GRN BIAS AGC LEVEL G2 SCREEN OPTION1 OPTION2 AVL PARABOLA HOR WIDTH CORNER T CORNER B HOR. PARAL V. LINEAR V. SLOPE EW TRAPEZ S CORRECT VERT CENT VERT SIZE BRIGHTNESS SHIPPING

Default setting 52 31 31 31 31 31 31 0011 1000 (0x38) 0000 1111 (0x0F) OFF 33 55 45 50 29 40 28 20 37 44 28 0 OFF

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CP-650 Service Manual 3.3 MICROCONTROLLER CONFIGURATION : OPTION BITS

There are two option bytes available (16 bits in all). These option bits are available from Service mode. First find the OPTION1 or OPTION2 control, and then use the Volume PLUS/MINUS buttons on the remote control keypad to locate the bits, and OK key to toggle them. The table below shows the two option bytes available; 3.4 OPTION 1 B6 FASTEXT (FLOF) OFF FASTEXT (FLOF) ON B5 TUBE 4:3 TUBE 16:9 B4 VAI bit set to 1 in SECAM L VAI bit set to 0 in SECAM L B4 PICTURE TILT ON PICTURE TILT OFF B3 Dolby Virtual OFF Dolby Virtual ON B3 5 keys lacal keyboard 7 keys lacal keyboard B2 SVHS3 disable SVHS3 enable B1 B0

B7 TOP 1 Teletext OFF TOP 0 Teletext ON 3.5 B7 1 Fixed to `0' 0

TUNER OPTIONS 00 = Philips 01 = Not used 10 = Alps 11 = Parstnic (DW)

OPTION 2 B6 JVC remote control Daewoo Remote control B5 AVL control OFF AVL control ON B2 Full ATSS B1 Double Window Enabled Double Window Disabled B0 n.u. Must be set to 1 for future compa tibility

Basic ATSS

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CP-650 Service Manual 3.6 NVM default setting

The purpose of this message, when you change a virgin EEPROM, is to allow to modify the NVM DATA to desired values. 1 - Introduction : The NVM default valus are fixed for the user, but for flexibility in service, these data are stored in NVM and can be changed when the TV set is in a special mode call "NVM EDITOR". This mode can only be access from "FACTORY" mode. 2 - Entering into "FACTORY" mode. To switch the TV set into FACTORY mode, use the factory remote control, and press on "SVC" key. The factory menu will appear on the screen, showing "FACTORY" , plus other relevant information like software version and date. WARNING : When in "FACTORY" mode you should not press any key other than the keys described in the procedure below. Unwanted key stroke could misadjust the TV set. 3 - Entering into "NVM EDITOR" mode. To switch the TV set into NVM EDITOR mode, use the user remote control, and press on "PICTURE/OK" key. The NVM EDITOR window will appear on the screen. This mode allow you to access all data stored in NVM. The current NVM address is given in column "ADDR." in both DECimal and HEXadecimal format. The column DATA gives the value contained at selected address in both DECimal and HEXadecimal format. 4 - Navigation in "NVM EDITOR" mode. Use Program Up/Dwn keys to select the desired address. Use Volume Up/Dwn keys to change the data at selected address. You must press "PICTURE/OK" key to store value after modification. The data can be adjusted between 0 and 63. 5 - Exit "NVM EDITOR" mode. To switch the TV set back into FACTORY mode, use the user remote control, and press on "MENU" key. The factory menu will appear on the screen, showing "FACTORY". 6 - Exit "FACTORY" mode. To exit "FACTORY" mode, use the factory remote control, and press on "SVC" key. The factory menu will disappear from the screen.

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CP-650 Service Manual

NVM DATA for CP-650
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 40 41 42 43 44 45 Register Name AGC start(Philips) AGC start(nc) AGC start(ALPS) AGC start(Partsnic) OCP_THRESHOLD DCXO POWER ON1 POWER ON2 AVLLEV AVL TTX_Brightness Nor1_Bright Nor1_contrast Nor1_Colour Nor1_Sharpness Nor1_Tint Nor2_Bright Nor2_Contrast Nor2_Colour Nor2_Sharpness Nor2_Tint BOW V-LINEAR Peaking White Level Soft Clipping Level PresetGainRGB PresetGainRGB PresetGainRGB Cathode_Drive RPA Black Stretch BSD AAS BCS Y_delay_PAL_BG Y_delay_SECAM_BG Y_delay_PAL_DK Y_delay_SCM_DK Y_delay_PAL_I Y_delay_SECAM Y_delay_SECAM-L Y_delay_AV G2_Bright G2_Contrast TxTPIT_Hoffset Address 0x5C5 0x5C6 0x5C7 0x5C8 0x58F 0x590 0x595 0x596 0x621 0x622 0x642 0x64A 0x64B 0x64C 0x64D 0x64E 0x653 0x654 0x655 0x656 0x657 0x665 0x667 0x671 0x672 0x673 0x674 0x675 0x67B 0x680 0x682 0x683 0x684 0x685 0x686 0x687 0x688 0x689 0x68A 0x68B 0x68C 0x68D 0x68E 0x68F 0x693 SETTING VALUE 0x0C 0x0C 0x0C 0x0C 0x91 0x4E 0x2D 0x1E 0x5 0x0 0x12 0x25 0x2E 0x20 0x23 0x1F 0x28 0x13 0x19 0x1B 0x1F 0x19 0x28 0x01 0x05 0x18 0x18 0x18 0x00 0x01 0x01 0x01 0x00 0x00 0x0F 0x8 0x08 0x06 0x0B 0x5 0x05 0x0F 0x28 0x42 0x10

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CP-650 Service Manual 3.7 TV SET ALIGNMENT

3.7.1 G2 ALIGNMENT - Tune a colour bar pattern. - Find the "G2 SCREEN" item in service mode. - Adjust screen volume (on FBT) to bring the cursor to central position(Green). 3.7.2 WHITE BALANCE - Select a dark picture and adjust RED BIAS and GRN BIAS to the desired colour temperature. - Select a bright picture and adjust RED, GRN and BLUE GAIN to the desired colour temperature. 3.7.3 FOCUS Adjust the Focus volume (on FBT) to have the best resolution on screen. 3.7.4 VERTICAL GEOMETRY Adjust V. LINEAR (linearity), S CORRECT (S. Correction), VERT SIZE (Vertical amplitude), VERT CENT (vertical centring) to compensate for vertical distortion.

3.7.5 HORIZONTAL PICTURE CENTRING Adjust HOR CEN (Horizontal centre) to have the picture in the centre of the screen. 3.7.6 EAST / WEST CORRECTION Adjust the PARABOLA, HOR WIDTH, CORNER, HOR PARAL, EW TRAPEZ, to compensate for geometrical distortion.

HOR PARAL

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CP-650 Service Manual

HOR WIDTH adjust for 93% overscan.

PARABOLA

CORNER B & CORNER T

EW TRAPEZ 3.7.7 AGC - Make sure option bits are correct for the tuner fitted on the chassis (See above how to change option bits). - Adjust the antenna signal level at 62 dBµV - Tune a colour bar pattern. - Find the "AGC" item in service mode. - Press the key "OK" on the remote keypad and wait until AGC level stabilise to the optimum value. - Alternatively, use "Vol Up/Dwn" keys to adjust manually to the desired Tuner Take Over Point (TOP). 15 DTV R&D Europe

CP-650 Service Manual 4 4.1 IC DESCRIPTION UOC III Series

The UOCIII series combines the functions of a Video Signal Processor (VSP) together with a FLASH embedded TEXT/Control/Graphics µ-Controller (TCG µ-Controller) and US Closed Caption decoder. In addition the following functions can be added: · Adaptive digital (4H/2H) PAL/NTSC combfilter · Teletext decoder with 10 page text memory · Multi-standard stereo decoder · BTSC stereo decoder · Digital sound processing circuit · Digital video processing circuit

4.1.1 IC MARKING AND VERSION Chassis IC marking OSD languages ATSS countries Austria, Belgium, Switzerland, Czech Republic, Germany, Denmark, Spain, France, Finland, GB, Greece, Hungary, Italy, Ireland, Norway, Netherlands, Portugal, Poland, Sweden, Slovak Republic, Others Text BULGARIAN, CZECH, GERMAN, DANISH, SPANISH, FRENCH, FINNISH, ENGLISH, GREEK, HUNGARIAN, TDA12021H ITALIAN, 1/N1F01 NORWEGIAN, DUTCH, PORTUGAL, POLISH, ROMANIAN, RUSSIAN, SWEDISH

CP-650

PAN-EUROPEAN LATIN, CYRILLIC, GREEK.

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CP-650 Service Manual 4.1.2. BLOCK DIAGRAM

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CP-650 Service Manual 4.1.3. PINNING QFP 128pin 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 40 41 42 43 DTV R&D Europe Symbol P1.5/TX P1.4/RX P1.2/INT2 VSSC3 VDDC3 P2.5/PWM4 P2.4/PWM3 VSSC/P P3.3/ADC3 P3.2/ADC2 DECV1V8 VDDC1 P3.1/ADC1 P3.0/ADC0 P2.3/PWM2 P2.2/PWM1 P2.1/PWM0 P2.0/TPWM VDDP(3.3V) P1.7/SDA P1.6/SCL P1.3/T1 P0.0/I2SDI1/O P0.1/I2SDO1 P0.2/I2SDO2 P0.3/I2SCLK P0.4/I2SWS VSSC2 VDDC2 P1.1/T0 P1.0/INT1 INT0/P0.5 VDDadc(1.8) VSSadc VDDA2(3.3) VDDA(1.8) GNDA VREFAD VREFAD_POS VREFAD_NEG VDDA1 BO GO Short Description Port 1.5 or UART bus port 1.4 or UART bus port 1.2 or external interrupt 2 Ground digital supply to core (1.8V) port 2.5 or PWM4 output port 2.4 or PWM3 output digital ground for m-Controller core and periphery port 3.3 or ADC3 input port 3.2 or ADC2 input decoupling 1.8 V supply digital supply to core (+1.8 V) port 3.1 or ADC1 input port 3.0 or ADC0 input port 2.3 or PWM2 output port 2.2 or PWM1 output port 2.1 or PWM0 output port 2.0 or Tuning PWM output supply to periphery and on-chip voltage regulator (3.3 V) port 1.7 or I2C-bus data line port 1.6 or I2C-bus clock line port 1.3 or Counter/Timer 1 input port 0.0 or I2S digital input 1 or I2S digital output port 0.1 or I2S digital output 1 port 0.2 or I2S digital output 2 port 0.3 or I2S clock port 0.4 or I2S word select Ground digital supply to core (1.8 V) port 1.1 or Counter/Timer 0 input port 1.0 or external interrupt 1 external interrupt 0 or port 0.5 (4 mA current sinking capability for direct drive of LEDs) supply voltage video ADC ground for on-chip temperature sensor supply voltage SDAC (3.3 V) analogue supply for audio ADCs (1.8 V) Ground reference voltage for audio ADCs (3.3/2 V) positive reference voltage (3.3 V) negative reference voltage (0 V) analog supply for TCG m-Controller and digital supply for TV-processor (+3.3 V) Blue output Green output 18

CP-650 Service Manual 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 Red output black current input beam current limiter input 3rd supply for TV processor ground 3 for TV-processor 3rd B input / PB input 3rd G input / Y input 3rd R input / PR input 3rd RGB / YPBPR insertion input V-output for YUV interface (general purpose switch VOUT(SWO1) output) U-output for YUV interface (2nd RGB / YPBPR UOUT(INSSW2) insertion input) YOUT Y-output (for YUV interface) YSYNC Y-input for sync separator Y-input for YUV interface (2nd G input / Y input or YIN (G/YIN2/CVBS-Yx) CVBS/YX input)) UIN (B/PBIN2) U-input for YUV interface (2nd B input / PB input) V-input for YUV interface (2nd R input / PR input or CX VIN (R/PRIN2/CX) input) VDDcomb supply voltage for comb filter (5 V) VSScomb ground connection for comb filter HOUT horizontal output flyback input/sandcastle output or composite H/V FBISO/CSY timing output SVM scan velocity modulation output CVBSO/PIP CVBS / PIP output AUDOUTHPR audio output for headphone channel (right signal) AUDOUTHPL audio output for headphone channel (left signal) AUDOUTLSR audio output for audio power amplifier (right signal) AUDOUTLSL audio output for audio power amplifier (left signal) C2/C3 chroma-2/3 input CVBS3/Y3 CVBS3/Y3 input AUDIOIN3R audio 3 input (right signal) AUDIOIN3L audio 3 input (left signal) CVBS2/Y2 CVBS2/Y2 input AUDIOIN2R audio 2 input (right signal) AUDIOIN2L audio 2 input (left signal) C4 chroma-4 input CVBS4/Y4 CVBS4/Y4 input AUDIOIN4R audio-4 input (right signal) AUDIOIN4L audio-4 input (left signal) IFVO/SVO/CVBSI (2) IF video output / selected CVBS output / CVBS input VP2 2nd supply voltage TV processor (+5 V) AGC2SIF AGC capacitor second sound IF VCC8V 8 Volt supply for audio switches DVBO/FMRO (2) Digital Video Broadcast output / FM radio output Digital Video Broadcast output / IF video output / FM DVBO/IFVO/FMRO (2) radio output RO BLKIN BCLIN VP3 GND3 B/PBIN3 G/YIN3 R/PRIN3 INSSW3

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CP-650 Service Manual 87 88 89 90 91 92 93 94 95 SIFAGC/DVBAGC (2) PLLIF GND2 QSSO/AMOUT/AUDEE M (2) DECSDEM AUDOUTSR AUDOUTSL AUDIOIN5R AUDIOIN5L AVL/SWO/SSIF/ REFO/REFIN (2) EHTO AGCOUT SIFIN2/DVBIN2 (2) SIFIN1/DVBIN1 (2) GNDIF IREF VSC VIFIN2 VIFIN1 VDRA VDRB EWD/AVL (1) DECBG SECPLL GND1 PH1LF PH2LF VP1 DECDIG VGUARD/SWIO AGC sound IF / internal-external AGC for DVB applications IF-PLL loop filter ground 2 for TV processor QSS intercarrier output / AM output / deemphasis (front-end audio out) decoupling sound demodulator audio output for SCART/CINCH (right signal) audio output for SCART/CINCH (left signal) audio-5 input (right signal) audio-5 input (left signal) Automatic Volume Levelling / switch output / sound IF input / subcarrier reference output / external reference signal input for I signal mixer for DVB operation EHT/overvoltage protection input tuner AGC output SIF input 2 / DVB input 2 SIF input 1 / DVB input 1 ground connection for IF amplifier reference current input vertical sawtooth capacitor IF input 2 IF input 1 vertical drive A output vertical drive B output East-West drive output or AVL capacitor bandgap decoupling SECAM PLL decoupling ground 1 for TV-processor phase-1 filter phase-2 filter 1st supply voltage TV-processor (+5 V) decoupling digital supply V-guard input / I/O switch (e.g. 4 mA current sinking capability for direct drive of LEDs) Ground crystal oscillator output crystal oscillator input positive reference voltage SDAC (3.3 V) negative reference voltage SDAC (0 V) positive reference voltage SDAC (3.3 V) negative reference voltage SDAC (0 V) positive reference voltage SDAC (3.3 V) supply (3.3 V) digital supply to SDACs (1.8V) Ground Ground 20

96

97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116

117 VSSA1 118 XTALOUT 119 XTALIN 120 VREF_POS_HPR 121 VREF_NEG_HPL+HPR 122 VREF_POS_LSR+HPR 123 VREF_NEG_LSL+HPL 124 VREF_POS_LSL 125 VDDA3(3.3V) 126 VDDC4 127 VSSC4 128 VSSP2 DTV R&D Europe

CP-650 Service Manual 4.1.4 FEATURES Analogue Video Processing (all versions) · Multi-standard vision IF circuit with alignment-free PLL demodulator · Internal (switchable) time-constant for the IF-AGC circuit · Switchable group delay correction and sound trap (with switchable centre frequency) for the demodulated CVBS signal · DVB/VSB IF circuit for preprocessing of digital TV signals. · Video switch with 3 external CVBS inputs and a CVBS output. All CVBS inputs can be used as Y-input for Y/C signals. However, only 2 Y/C sources can be selected because the circuit has 2 chroma inputs. It is possible to add an additional CVBS(Y)/C input (CVBS/YX and CX) when the YUV interface and the RGB/YPRPB input are not needed. · Automatic Y/C signal detector · Adaptive digital (4H/2H) PAL/NTSC comb filter for optimum separation of the luminance and the chrominance signal. · Integrated luminance delay line with adjustable delay time · Picture improvement features with peaking (with switchable centre frequency, depeaking, variable positive/negative peak ratio, variable pre-/overshoot ratio and video dependent coring), dynamic skin tone control, gamma control and blue- and black stretching. All features are available for CVBS, Y/C and RGB/YPBPR signals. · Switchable DC transfer ratio for the luminance signal · Only one reference (24.576 MHz) crystal required for the TCG m-Controller, digital sound processor, Teletext and the colour decoder · Multi-standard colour decoder with automatic search system and various "forced mode" possibilities · Internal base-band delay line · Indication of the Signal-to-Noise ratio of the incoming CVBS signal · Linear RGB/YPBPR input with fast insertion. · YUV interface. When this feature is not required some pins can be used as additional RGB/YPBPR input. It is also possible to use these pins for additional CVBS (or Y/C) input (CVBS/YX and CX). · Tint control for external RGB/YPBPR signals · Scan Velocity Modulation output. The SVM circuit is active for all the incoming CVBS, Y/C and RGB/YPBPR signals. The SVM function can also be used during the display of teletext pages. · RGB control circuit with `Continuous Cathode Calibration', white point and black level off-set adjustment so that the colour temperature of the dark and the light parts of the screen can be chosen independently. · Contrast reduction possibility during mixed-mode of OSD and Text signals · Adjustable `wide blanking' of the RGB outputs · Horizontal synchronization with two control loops and alignment-free horizontal oscillator · Vertical count-down circuit · Vertical driver optimized for DC-coupled vertical output stages · Horizontal and vertical geometry processing with horizontal parallelogram and bow correction and horizontal and vertical zoom · Low-power start-up of the horizontal drive circuit Analogue video processing (stereo versions) · The low-pass filtered `mixed down' I signal is available via a single ended or balanced output stage. Analogue video processing (mono versions) · The low-pass filtered `mixed down' I signal is available via a single ended output stage Digital Video Processing (some versions) · Double Window mode applications. It is possible to display a video and a text window or 2 text DTV R&D Europe 21

CP-650 Service Manual windows in parallel. · Linear and non-linear horizontal scaling of the video signal to be displayed. Sound Demodulation (all versions) · Separate SIF (Sound IF) input for single reference QSS (Quasi Split Sound) demodulation. · AM demodulator without extra reference circuit · The mono intercarrier sound circuit has a selective FM-PLL demodulator which can be switched to the different FM sound frequencies (4.5/5.5/6.0/6.5 MHz). The quality of this system is such that the external band-pass filters can be omitted. In the stereo versions of UOCIII the use of this demodulator is optional for special applications. Normally the FM demodulators of the stereo demodulator/decoder part are used (see below). · The FM-PLL demodulator can be set to centre frequencies of 4.72/5.74 MHz so that a second sound channel can be demodulated. In such an application it is necessary that an external bandpass filter is inserted. · The vision IF and mono intercarrier sound circuit can be used for the demodulation of FM radio signals. With an external FM tuner also signals with an IF frequency of 10.7 MHz can be demodulated. · Switch to select between 2nd SIF from QSS demodulation or external FM (SSIF) Audio Interfaces and switching (stereo versions with Audio DSP) · Audio switch circuit with 4 stereo inputs, a stereo output for SCART/CINCH, 1 stereo output for HEADPHONE. The headphone channel has an analogue volume control circuit for the L and R channel. Finally 1 stereo SPEAKER output with digital controls. · AVL (Automatic Volume Levelling) circuit for the headphone channel. · Digital input crossbar switch for all digital signal sources and destinations · Digital output crossbar for exchange of channel processing functionality · Digital audio input interface (stereo I2S input interface) · Digital audio output interface (stereo I2S output interface) Audio interfaces and switching (AV stereo versions without Audio DSP) · Audio switch circuit with 4 stereo inputs, a stereo output for SCART/CINCH and a stereo SPEAKER output with analogue volume control. · Analogue mono AVL circuit at left audio channel Audio interfaces and switching (mono versions) · Audio switch circuit with 4 external audio (mono) inputs and a volume controlled output · AVL circuit Stereo Demodulator and Decoder (full stereo versions) · Demodulator and Decoder Easy Programming (DDEP) · Auto standard detection (ASD) · Static Standard Selection (SSS) · DQPSK demodulation for different standards, simultaneously with 1-channel FM demodulation · NICAM decoding (B/G, I, D/K and L standard) · Two-carrier multistandard FM demodulation (B/G, D/K and M standard) · Decoding for three analog multi-channel systems (A2, A2+ and A2*) and satellite sound · Adaptive de-emphasis for satellite FM · Optional AM demodulation for system L, simultaneously with NICAM · Identification A2 systems (B/G, D/K and M standard) with different identification time constants · FM pilot carrier present detector · Monitor selection for FM/AM DC values and signals, with peak and quasi peak detection option · BTSC MPX decoder · SAP decoder · dbx® noise reduction (4) · Japan (EIAJ) decoder · FM radio decoder · Soft-mute for DEMDEC outputs DEC, MONO and SAP DTV R&D Europe 22

CP-650 Service Manual · FM overmodulation adaptation option to avoid clipping and distortion Audio Multi Channel Decoder (stereo versions with Audio DSP) · Dolby® Pro Logic® (DPL) (1) · Five channel processing for Main Left and Right, Subwoofer, Centre and Surround. To exploit this feature an external DAC is required. Volume and tone control for loudspeakers (stereo versions with Audio DSP) · Automatic Volume Level (AVL) control · Smooth volume control · Master volume control · Soft-mute · Loudness · Bass, Treble · Dynamic Bass Boost (DBB) (2) · Dynamic Virtual Bass (DVB) (3) · BBE® Sound processing (4) · Graphic equalizer · Processed or non processed subwoofer · Programmable beeper Reflection and delay for loudspeaker channels (stereo versions with Audio DSP) · Dolby® Pro Logic® Delay (1) · Pseudo hall/matrix function Psycho acoustic spatial algorithms, downmix and split in loudspeaker channels (stereo versions with Audio DSP) · Extended Pseudo Stereo (EPS) (5) · Extended Spatial Stereo (ESS) (6) · Virtual Dolby® Surround (VDS 422,423) (1) · SRS 3D and SRS TruSurround® (4) RDS/RBDS · Demodulation of the European Radio Data system (RDS) or the USA Radio Broadcast Data System (RBDS) signal · RDS and RBDS block detection · Error detection and correction · Fast block synchronisation · Synchronisation control (flywheel) · Mode control for RDS/RBDS processing · Different RDS/RBDS block information output modes m-Controller · 80C51 m-controller core standard instruction set and timing · 0.4883 ms machine cycle · maximum of 256k x 8-bit flash programmable ROM · maximum of 8k x 8-bit Auxiliary RAM · 12-level Interrupt controller for individual enable/disable with two level priority · Two 16-bit Timer/Counter registers · One 24-bit Timer (16-bit timer with 8-bit Pre-scaler) · WatchDog timer · Auxiliary RAM page pointer · 16-bit Data pointer · Stand-by, Idle and Power Down modes · 24 general I/O · 14 bits PWM for Voltage Synthesis Tuning · 8-bit A/D converter with 4 multiplexed inputs DTV R&D Europe 23

CP-650 Service Manual · 5 PWM (6-bits) outputs for analogue control functions · Remote Control Pre-processor (RCP) · Universal Asynchronous Receiver Transmitter (UART) Data Capture · Text memory up to 10 pages · Inventory of transmitted Teletext pages stored in the Transmitted Page Table (TPT) and Subtitle Page Table (SPT) · Data Capture for US Closed Caption · Data Capture for 525/625 line WST, VPS (PDC system A) and Wide Screen Signalling (WSS) bit decoding · Automatic selection between 525 WST/625 WST · Automatic selection between 625 WST/VPS on line 16 of VBI · Real-time capture and decoding for WST Teletext in Hardware, to enable optimized mprocessor throughput · Automatic detection of FASTEXT transmission · Real-time packet 26 engine in Hardware for processing accented, G2 and G3 characters · Signal quality detector for video and WST/VPS data types · Comprehensive teletext language coverage · Vertical Blanking Interval (VBI) data capture of WST data Display · Teletext and Enhanced OSD modes · Features of level 1.5 WST and US Close Caption · 50Hz/60Hz display timing modes · Two page operation for 16:9 screens · Serial and Parallel Display Attributes · Single/Double/Quadruple Width and Height for characters · Smoothing capability of both Double Size, Double Width & Double Height characters · Scrolling of display region · Variable flash rate controlled by software · Soft colours using CLUT with 4096 colour palette · Globally selectable scan lines per row (9/10/13/16/) and character matrix [12x9, 12x10, 12x13, 12x16, 16x18, (VxH)] · Fringing (Shadow) selectable from N-S-E-W direction · Fringe colour selectable · Contrast reduction of defined area · Cursor · Special Graphics Characters with two planes, allowing four colours per character · 64 software redefinable On-Screen display characters · 4 WST Character sets (G0/G2) in single device (e.g. Latin, Cyrillic, Greek, Arabic) · G1 Mosaic graphics, Limited G3 Line drawing characters · WST Character sets and Closed Caption Character set in single device · SVM for Text

4.2

TDA8946J STEREO AUDIO AMPLIFIER

The TDA 8946J is a dual-channel audio power amplifier with an output power of 2 x 15 W at an 8 load and a 18 V supply. The circuit contains two Bridges Tied Load (BTL) amplifiers with an DTV R&D Europe 24

CP-650 Service Manual all-NPN output stage and standby/mute logic. The TDA8946J comes in a 17-pin DIL-bentSIL(DBS) power package. 4.2.1 FEATURES Few external components Fixed gain Standby and mute mode No on/off switching plops Low standby current High supply voltage ripple rejection Outputs short-circuit protected to ground, supply and across the load Thermally protected Pin description Pin 1 2 3 4 5 6 7 8 9 10 11 12 Symbol OUT1GND1 Vcc1 OUT1+ n.c. IN1+ n.c. IN1IN2MODE SVR IN2+ Description negative loudspeaker terminal 1 ground channel 1 supply voltage channel 1 positive loudspeaker terminal 1 not connected positive input1 not connected negative input1 negative input2 mode selection input half supply voltage decoupling (ripple rejection) positive input2

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Block diagram TDA8946J

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4.3

TDA8358J VERTICAL AMPLIFIER

The TDA8358J are power circuit for use in 90° and 110° colour deflection systems for field frequencies of 25 to 200Hz field frequencies, and for 4:3 and 16/9 picture tubes. The IC contains a vertical deflection output circuit, operating as a high efficiency class G system. The full bridge output circuit allows DC coupling of the deflection coil in combination with single positive supply voltages. The east-west output stage is able to supply the sink current for a diode modulator circuit. The IC is constructed in a Low Voltage DMOS(LVDMOS) process that combines bipolar, CMOS and DMOS devices. DMOS transistors are used in the output stage because of the absence of second breakdown. 4.3.1 TDA8358J Features : Few external components Highly efficient fully DC-coupled vertical bridge output circuit Vertical flyback switch with short rise and fal times Built-in guard circuit Thermal protection circuit Improved EMC performance due to differential inputs East-west output stage

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CP-650 Service Manual

Pinning Pin 1 2 3 4 5 6 7 8 9 10 11 12 13 Symbol INA INB VP OUTB INEW VGND EWGND OUTEW VFB OUTA GUARD FEEDB COMP Description Positeve vertical input Negative vertical input Supply voltage Vertical output voltage B East-west input voltage Vertical ground East-west ground East-west output voltage Flyback supply voltage Vertical output voltage A Guard output voltage Input measuring resistor Input compensation current

Block diagram TDA8358J

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CP-650 Service Manual 4.4 TDA6107AJF

The TDA6107AJF includes three video output amplifiers and is intended to drive the three cathodes of a colour CRT directly. The device is contained in a plastic DIL-bent-SIL 9-pin medium power(DBS9MPF) package, and uses high-voltage DMOS technology. To obtain maximum performance, the amplifier should be used with black-current control. 4.4.1 Features Typical bandwidth of 5.5 MHz for an output signal of 60 Vpp High slew rate of 900V/µs No external components required Very simple application Single supply voltage of 200V Internal reference voltage of 2.5 V Fixed gain of 81. Black-current stabilisation (BCS) circuit with voltage window from 1.8 to 6 V and current window form 100uA to -10mA Thermal protection Internal protection against positive flashover discharges appearing on the CRT 4.4.2 Pin description Pin 1 2 3 4 5 6 7 8 9 Symbol Vi(1) Vi(2) Vi(3) GND Iom VDD VOC(3) VOC(2) VOC(1) Description inverting input 1 inverting input 2 inverting input 3 ground (fin) black current measurement output supply voltage cathode output 3 cathode output 2 cathode output 1

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Block diagram TDA6107AJF 4.5 24WC16 - 16 KB EEPROM

Features : 16 Kbit serial I2C bus EEPROM 400KHz I2C Bus Compatible supply voltage : 1.8 V to 6.0 V Low Power CMOS Technology 1 Million Erase/Write cycles (minimum) 100 year data retention (minimum) Pin description Pin No. Name 1, 2, 3 A0, A1, A2 5 SDA 6 SCL 7 WP 8 Vcc 4 Vss

Description Device address not used Serial Data/Address Input/Output Serial clock Write control Supply voltage Ground

The memory device is compatible with the I2C memory standard. This is a two wire serial interface that uses a bi-directional data bus and serial clock. The memory carries a built-in 4-bit unique device type identifier code (1010) in accordance with the I2C bus definition. Serial Clock (SCL) The SCL input is used to strobe all data in and out of the memory. Serial Data (SDA) The SDA pin is bi-directional, and is used to transfer data in or out of the memory.

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CP-650 Service Manual 4.6 STR W6754

4.6.1 GENERAL DESCRIPTION The STR-W6700 series is a Hybrid IC (HIC) designed for Quasi-Resonant type Switching Mold Power Supply built-in a Power MOSFET and Control IC. 4.6.2 FEATURES operation mode turns blocking oscillation by reducing output voltage at stand-by mode. In addition to the existing Quasi-Resonant Operation, the Bottom-Skip Function is added in order to be efficient from light to medium load. Soft-Start Operation is provided at the SMPS start-up. Switching noise is reduced by Step-Drive Function. Avalanche energy of the MOSFET is guaranteed. Overcurrent Protection (OCP), Overvoltage Protection (OVP), Overload Protection (OLP), and Maximum ON-Time control circuits are incorporated. It is possible to save the SMPS design time by utilizing the present designs and evaluation processes. 4.6.3 BLOCK DIAGRAM

VCC

Reg& Iconst
Burst Control

Abnormal latch R Q S

DRIV E Reg

D

Delay

OVP

Start Stop Burst

S/GND

FB

FB
R Q S OSC MaxON Q S R

OCP

BSD

OLP Soft Start

BD

Bottom Selector Counter

OCP/BD SS/OLP

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4.6.4 PIN DESCRIPTION Pin No. Symbols Terminal Descriptions Drain Terminal Source/Grand Terminal
Power Supply Terminal
Delay at Overload/SoftStart set up Terminal

Functions

1 2 3 4 5

D S/GND VCC SS/OLP

MOSFET Drain MOSFET Source and Ground
Control Circuit Power Supply Input

6

FB

Feedback Terminal
Overcurrent Protection Input/Bottom Detection Terminal

7

OCP/BD

Overload Protection and Soft- Start Operation Time set up Constant Voltage Control Signal Input, Blocking Oscillation Control Overcurrent Detection Signal Input / Bottom Detection Signal Input

4.6.5 MOSFET ELECTRICAL CHARACTERISTICS Parameters Terminal Symbols Ratings
MIN TYP MAX

Units

Conditions

Drain-Source Voltage 7 Drain Leakage Current ON Resistance 7 Switching Time Thermal Resistance 7

1-3 1-3 1-3 1-3

VDSS IDSS RDS(ON) f ch-F

650

V µA Nsec /
6

300 0.73

Channel Internal Frame

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4.6.6 ELECTRICAL CHARACTERISTICS
Ratings Parameters
ower Supply Start-up Operation Operation Start-up Voltage Operation Stop Voltage Operation Circuit Current Non Operation Circuit Current Oscillation Frequency Soft-Start Operation Stop Voltage Soft-Start Operation Charging Current ormal Operation Overcurrent Detection Threshold Voltage Bottom-Skip Operation Threshold Voltage 1 Bottom-Skip Operation Threshold Voltage 2 OCP/BD Terminal Outflow Current Quasi-Resonant Operation Threshold Voltage 1 Quasi-Resonant Operation Threshold Voltage 2 Minimum Quasi-Resonant Signal Input Time FB Terminal Threshold Voltage FB Terminal Inflow Current (Normal Operation) tand-by Operation Stand-by Operation Start-up Power Supply Voltage Stand-by Power Supply Voltage Interval Stand-by Non-Operational Circuit Current FB Stand-by Operation Threshold Voltage FB Terminal Inflow Current (Stand-by) Minimum ON Time otection Operation Maximum ON Time OLP Operation Threshold Voltage OLP Operation Charging Current Normal Operation Discharging Current OLP Delay Time OVP Operational Voltage Latch Circuit Holding Current 10 Latch Circuit Releasing Power Supply Voltage 10

Terminal

Symbols
MIN TYP MAX

Units

4-3 4-3 4-3 4-3 1-3 5-3 5-3 7-3 7-3 7-3 7-3 7-3 7-3 7-3 6-3 6-3 4-3 4-3 4-3 6-3 6-3 1-3 1-3 5-3 5-3 5-3 1-3 4-3 4-3 4-3

VCC(ON) VCC(OFF) ICC(ON) ICC(OFF) fOSC VSSOLP(SS) ISSOLP(SS) VOCPBD(LIM) VOCPBD(BS1) VOCPBD(BS2) IOCPBD VOCPBD(TH1) VOCPBD(TH2) TOFF(MIN) VFB(OFF) IFB(ON) VCC(S) VCC(SK) ICC(S) VFB(S) IFB(S) TON(MIN) TON(MAX) VSSOLP(OLP) ISSOLP(OLP) ISSOLP(NOR) TOLP VCC(OVP) ICC(H) VCC(La.OFF)

18.2 9.6 22 1 -450 -0.95 -0.66 -0.44 0.4 0.8 1.5

6 100

V V mA µA kHz V µA V V V µA V V µsec V mA V V A V µA µsec µS V µA µA ms V µA V

1

11.2 1.5 30

1 34 5 -10 40 27.5 7.3

150

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CP-650 Service Manual
5 CIRCUIT DESCRIPTION

5.1

BLOCK DIAGRAM

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5.2

FUNCTIONAL DESCRIPTION OF VIDEO PROCESSOR

5.2.1 Vision IF amplifier

The vision IF amplifier can demodulate signals with positive and megative modulation. The PLL demodulator is completely alignment-free. The VCO of the PLL circuit is internal and the grequency is fixed to the required value by using the clock ftequency of the TCG u-Controller as a reference. The setting of the various frequencies (e.g. 38, 38.9, 45.75 and 58.75MHz) can be made via the control bits IFA-IFC in subaddress 2FH. Because of the internal VCO the IF circuit has a high immunity to EMC interferences. The output of the AFC detector can be read from output byte o4H and has a resolution of 7bit(25kHz per step). By means of this information a fast tuning algorithm can be designed. The IC contains a group delay correction circuit which can be switched between the BG and a uncompensated group delay response characteristic. This hasthe advantage that in multistandard receivers no compromise has to be made for the choice of the SAW filter. This group delay corection is realised for the demodulated CVBS output signal. The IC contains in addition a sound trap circuit with a switchable centre frequency.
5.2.2 QSS sound circuit

The sound IF amplifier is similar to the vision IF amplifier and has an external AGC decoupling capacitor. ThesinglereferenceQSSmixerisrealisedbyamultiplier. In this multiplier the SIF signal is converted to the intercarrier frequency by mixing it with the regenerated picture carrier from the VCO. The mixer output signal is suppliedtotheoutputviaahigh-passfilterforattenuation of the residual video signals. With this system a high performance hi-fi stereo sound processing can be achieved. TheAMsounddemodulatorisrealisedbyamultiplier.The modulated sound IF signal is multiplied in phase with the limited SIF signal. The demodulator output signal is supplied to the output via a low-pass filter for attenuation of the carrier harmonics. SwitchingbetweentheQSSoutputandAMoutputismade by means of the AM bit in subaddress 33H.
5.2.3 FM demodulator

TheFMdemodulatorisrealisedasnarrow-bandPLL with internal loop filter, which provides the necessary selectivity without using an external band-pass filter. To obtain a good selectivity a linear phase detector and a constant input signal amplitude are required. For this reason the intercarrier signal is internally supplied to the demodulator via a gain controlled amplifier and AGC circuit. To improve the selectivity an internal bandpass filter is connected in front of the PLL circuit. The nominal frequency of the demodulator is tuned to the required frequency (4.5/5.5/6.0/6.5 MHz) by means of a calibration circuit which uses the clock frequency of the TCG(1)-Controller as a reference. It is also possible to frequencies of 4.72 and 5.74Mhz so that a second sound channel can be demodulated. In the latter application an external bandpass filter has to be DTV R&D Europe 35

CP-650 Service Manual applied to obtain sufficient selectivity (the sound input can be activated by means of the setting of CMB2-CMB0 bits in subaddress 4AH). The setting to the wanted frequency is realised by means of the control bits FMA, FMB and FMC in the control bit 33H. From the output status bytes it can be read whether the PL Lfrequency is inside or outside the window and whether thePLL is in lock or not. With this information it is possible to make an automatic search system for the incoming sound frequency. This can be realised by means of a software loop which switches the demodulator to the various frequencies and then select the frequency on which a lock condition has been found. The amplitude deemphasis output signal changed with 6dB by means of the AGN bit. In this way output signal differences between the 4.5 MHz standard (frequency deviation25 kHz) and the other standards (frequency deviation50 kHz) can be compensated.
5.2.4 Audio input selector and volume contro

5.2.4.1 STEREO AND AV STEREO VERSIONS The audio input selector circuit has 4 external stereo inputs, a stereo output for SCART/CINCH and stereo outputs for headphone and audio power amplifiers. The selection is made with the bits SAS2/0, SO2/0 and HPO2/0. AV stereo versions without Audio DSP have no headphone output. The input signal selection for the volumecontrolledaudiooutputsisrealisedbytheHPO2/0 bits. The gain from an external audio input to each of the (non-controlled) analog output is 0 or +6dB(controlled by the DSG bit). A supply voltage of 5V allows input and output amplitude of 1VRMS full scale, as required to comply with the SCART specification, the audio supply voltage must be 8V. In that case the gain of the audio amplifier must be doubled. This can be realised with the DSG bit in subaddress 32H. The circuit contains an analogue stereo volume control circuit with a control range of about 70dB. This volume control circuit is used for the headphone channel (stereo versions with Audio DSP) or for the main channel (AV stereo versions without Audio DSP). The analogue control circuit also contains an Automatic Volume Levelling(AVL) function. When this function is activated it stabilises the audio output signal to a certainl evel so that big fluctuations of the output power are prevented. 5.2.4.2 MONO VERSIONS The audio input selector circuit has 4 inputs for mono signals. The selection is made with the HPO2/0 bits. The circuit contains an analogue volume control circuit with a control range of about 70dB and an AVL circuit.
5.2.5 CVBS and Y/C input signal selection

5.2.5.1 ALL VERSIONS

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CP-650 Service Manual The Ics have 3 inputs for external CVBS signals. All CVBS inputs can be used as Y input for the insertion of Y/C signals.However, the CVBS(Y)2 input has to be combined with the C3 input. It is possible to add and extra CVBS(Y/C) input via the pins which are intended to be used for YUV interface (or RGB/YPrPb input). The selection of this additional CVBS(Y/C) input is made via the YC bit. The function of the IFVO/SVO/CVBSI pin is determined by the SVO1/SVO0 bits. When used as output a selection can be made between the IF video output signal or the selected CVBS signal (monitor out). This pin can also be used as additional CVBS input. This signal is inserted in front of the group delay / sound trap circuit. It is also possible to use the group delay and sound trap circuit for the CVBS2 signal (via the CV2 bit). For the CVBS(Y/C) inputs the circuit can detect whether a CVBS or Y/C signal is present on the input. The result can be read from the status register (YCD bit in subaddress 03H) and this information can be used to put the input switch in the right position (by means of the INA-IND bits in subaddress 38H). The Y/C detector is only active for the CVBS(Y)3/C3, CVBS(Y)4/C4 and CVBS(Y)x/Cx inputs. It is not active for the CVBS(Y)2/C3 input. The video ident circuit can be connected to all video input signals. This ident circuit is independent of the synchronisation and can be used to switch the synchronisation and can be used to switch the presence of a video signal (via the VID bit). In this way a very stable OSD can be realised. The result of the video ident circuit can be read from the output bit SID (subaddress 00).
5.2.6 Synchronisation circuit

The IC contains separator circuits for the horizontal and vertical sync pulses. To obtain an accurate timing of the displayed picture the input signal of the sync separator is not derived from the various CVBS/Y or RGB/YPrPb inputs but from the YOUT pin. For this reason the YOUT pin must be capacitively coupled to the YSYNC pin. The delay between the various inputs and the YOUT signal can have rather large differences (e.g. comb filter active or not). By choosing the YOUT signal as input signal for the sync separator these delays have no effect on the picture position. Only for RGB signals without sync on green the input of the sync separator has to be connected to one of the CVBS inputs. This selection is made by means of the SYS bit. The horizontal drive signal is obtained from an internal VCO which is running at a frequency of 25 MHz. This oscillator is stabilised to this frequency by using the clock signal coming from the reference oscillator of the TCG -Controller. To obtain a stable On-Screen-Display (OSD) under all conditions it is important that the first control loop is switched off or set to low gain when no signal is available at the input. The input signal condition is detected by the video identification circuit. The video identification circuit can automatically switch first control loop to a low gain when no input signal is available. This mode is obtained when the VID bit is set to "0". When the VID bit is "1" the mode of the first control loop can be switched by means of the FOA/FOB or POC bits. For a good performance during normal TV reception (display of the front-end signal) various connections are active between the vision IF amplifier and the synchronisation circuit (e.g. gating pulses for the AGC detector and noise gating of the sync separator). These connections are not allowed when external video signals are displayed. The switching of these connections can be coupled to the input signal selection bits (INA-IND). This mode is obtained when the VDXEN bit is "0". Due to the input signal selector configuration it is possible that the internal CVBS signal is DTV R&D Europe 37

CP-650 Service Manual available on one of the other CVBS inputs.In this condition the connections between the vision IF amplifier and the synchronisation circuit can be switched on and off by means of the VDX bit. The VDXEN bit must be set to "1" for this mode. The vertical synchronisation is realised by means of a divider circuit.
5.2.7 Horizontal and vertical drive

The horizontal drive is switched on and off via the soft start/stop procedure. The soft start function is realised by means of variation of the TON of the horizontal drive pulses. During the soft-stop period the horizontal output frequency is doubled resulting in a reduction of the EHT so that the picture tube capacitance can easily be discharged. In addition the horizontal drive circuit has a `low-power start-up' function. The vertical ramp generator needs an external resistor and capacitor. For the vertical drive a differential output current is available. The outputs must be DC coupled to the vertical output stage. The IC has the following geometry control functions: Vertical amplitude Vertical slope S-correction Vertical shift Vertical zoom Vertical scroll Vertical linearity correction. When required the linearity setting for the upper and lower part of the screen can have a different setting. Horizontal shift EW width EW parabola width EW upper and lower corner parabola correction EW trapezium correction Horizontal parallelogram and bow correction. When the East-West geometry function is not required (e.g. for 90 picture tubes) the EW output pin can be used for the connection of the AVL capacitor. This function is chosen by means of the AVLE bit.
5.2.8 Chroma, luminance and feature processing

Someversionscontaina4H/2H(2D)adaptivePAL/NTSC comb filter. The comb filter is automatically activated when standard CVBS signals are received.A signal is considered as "standard signal" when a PAL or NTSC signal is identified and when the vertical divider is in the modes `standard narrow window' or `standard TV norm'.For non-standard signals and for SECAM signals the comb filter is bypassed and the signal is filtered by means of bandpass and trap filters. The chroma band-pass and trap circuits (including the SECAM cloche filter) are realised by means of internal filters and are tuned to the right frequency by comparing the tuning frequency with the reference frequency of the colour decoder.

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CP-650 Service Manual The circuit contains the following picture improvement features: Peaking control circuit. The peaking function can be activated for all incoming CVBS, Y/C and RGB/YPrPb signals. Various parameters of the peaking circuit can be adapted by means of the I2C-bus. The main parameters are: Peaking centre frequency (via the PF1/PF0 bits in subaddress 19H). Ratio of positive and negative peaks (via the RPO1/RPO0 bits in subaddress 47H). The peaks in the direction "white" are the positive peaks. - Ratio of pre- and aftershoots (via the RPA1/RPA0 bits in subaddress 47H). Video dependent coring in the peaking circuit. The coring can be activated only in the lowlight parts of the screen. This effectively reduces noise while having maximum peaking in the bright parts of the picture. Black stretch. This function corrects the black level for incoming signals which have a difference between the black level and the blanking level. The amount of stretching (A-A in Fig. 72) and the minimum required back ground to activate the stretching can be set by means of the I2C-bus (BSD/AAS in subaddress 45H). Gamma control. When this function is active the transfer characteristic of the luminance amplifier is made non-linear.Thecontrolcurvecanbeadaptedbymeans of I2C-bus settings (see Fig. 74). It is possible to make the gamma control function dependent on the picture content (Average Picture Level, APL). The effect is illustrated in Fig. 75. Previously this function was mentioned under the name "white stretch function". Blue-stretch. This circuit is intended to shift colour near `white' with sufficient contrast values towards more blue to obtain a brighter impression of the picture. Dynamic skin tone (flesh) control. This function is realised in the YUV domain by detecting the colours near to the skin tone. Scan-Velocity modulation output. Also the SVM function can be activated for all incoming CVBS, Y/C and RGB/YPrPb signals. The delay between the RGB output signals and the SVM output signal can be adjusted (by means of the SVM2-SVM0 bits in subaddress 48H) so that an optimum picture performance can be obtained. Furthermore a coring function can be activated. It is possible to generate Scan Velocity Modulation drive signals during the display of `full screen' teletext (not in mixed mode). Another feature is that the SVM output signal can be made dependent on the horizontal position on