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Toshiba 28YT56 Service Manual

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TOSHIBA
SERVICE MANUAL
COLOUR TELEVISION
28YT56/32YT56
PRINTED IN UK. 2003 C

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  • Page 1 TOSHIBA SERVICE MANUAL COLOUR TELEVISION 28YT56/32YT56 PRINTED IN UK. 2003 C...

  • Page 2: Table Of Contents

    Service Manual AK49-001 TABLE OF CONTENTS INTRODUCTION 1.1. Purpose 1.2. Scope 1.3. General Features GENERAL DESCRIPTION 2.1. Introduction 2.2. System Building Blocks 2.2.1. UOC-III (Ultimate-One-Chip) 2.2.1.1. Fav & B_Svhs & F_Svhs 2.2.1.2. Scart1 2.2.1.3. Scart2 2.2.1.4. Scart3 2.2.1.5. VestelBus 2.2.1.6. Audio 2.2.1.7.
  • Page 3 2.2.4.2. Secondary Block 2.2.5 CABELING 2.2.6 CABLE SPECs 2.2.6.1 RGB CABLE 2.2.6.2 200V CABLE (with BSVM) 2.2.6.3 200V CABLE (with BSVM) 2.2.7 SAW FILTER 2.2.8 TUNER 3. AK49 CHASSIS MANUAL ADJUSTMENTS PROCEDURE 3.1 SMPS B+ADJUSTMENT 3.2 AFC ADJUSTMENT 3.3 FOCUS ADJUSTMENT 3.4 SCREEN ADJUSTMENT 4.
  • Page 4 Document History Document Versi Revision and Date Status Prepared by Approved by Review History v0.1 14.12.2004 Draft YAVUZ İNCE KAGAN M. PANCAR SERDAR GÜLTEN File Name: AK49_SM_VO1...

  • Page 5: Introduction

    1. Introduction 1.1. Purpose This document is prepared for the UOC3 TV project and describes the whole system features and operating principles to be used in hardware design phase. The document is based on “Device Specification UOCIII-Version 2.5” and “Introducing UOC-III” from Philips Semiconductors.

  • Page 6: General Description

    2. General Description 2.1. Introduction This chapter describes system building blocks and their detailed discriptions. 2.2. System Building Blocks AK49 chassis main block are; • UOC3 : Microcontroller + Video Proccessor + Sound Proccessor + IF+Teletext • SMPS : SMPS Controller, SMT, Bridge Rect., Line Filters •...
  • Page 7 Block diagram of the TV System with face-down version is;...

  • Page 9: Scart1

    2.2.2.1 FAV & BAV & B_SVHS & F_SVHS B_SVHS and F_SVHS inputs can not be supported at the same time. FAV & B_SVHS_Y & F_SVHS_Y inputs use same CVBS input. (cvbs2/74) B_SVHS_ C & F_SVHS_C input is C2/C3(70). FAV audio input is AUDIOin_5 L,R (94,95) and shared with F_SVHS. BAV video input is CVBS1 (81) and can not be supported with SCART3 at the same time.

  • Page 10: Scart3

    YPbPr input is possible via SCART2 RGB lines with an adaptor. In this case R/Vin(59), G/Yin(57), B/Uin(58) inputs can be used as; RGB, YUV, YPbPr inputs. SCART2 audio inputs are AUDIOin_2 L,R ( 75) . SCART2 audio outputs are AUDIOout_HPR,HPL (67,66). That output is also selectable . 2.2.2.4 SCART3 SCART3 video input is CVBS1 (81) .

  • Page 11: Port Allocations

    2.2.2.7 PORT ALLOCATIONS (32) (INT-0) REMOTE (31) (INT-1) TV_LINK (30) (Counter-Timer) PROTECTION (27) (I2S Word Select) I2S_WS (26) (I2S Clock) I2S_CLK (25) (I2S OUT2) I2S_Swoofer (24) (I2S OUT1) I2S_HP (23) (I2S-IN/OUT) WRITE-PROT. (22) (ON/OFF) ON/OFF+LED (21) (SCL) (20) (SDA) (18) (PWM) ROT/TILT (17)

  • Page 12: Power Management

    2.2.2.8 POWER MANAGEMENT The power consumption of UOC3 is ; Only 3,3V_Stb is necessary for the start-up. IC internally produces 2,5V and 1,8V at the Standby mode. After start-up necessary 1,8V are produced by external regulators. So, we have 3,3V_Stb, 5V, 5V_Stb and 1,8V.
  • Page 13 to base of Q108 Transistor and base of Q114 Transistor. The collector voltage becomes 1v8. When the +3V3_stb voltage decreases below the 2V6 Q110 Transistor goes OFF condition so FETs become ON. Q107 FET shorts 1V8 digital to ground and system is reset condition. Another reset condition becomes when the S_Reset port is active.

  • Page 14: Input & Output Performance

    2.2.2.9 INPUT & OUTPUT PERFORMANCE EXTERNAL INPUT - OUTPUT PERFORMANCE 1 ± 0.15 V CVBS INPUT VOLTAGE Luminance 700 ± 15 % mV Sync 300 ± 15 % mV CVBS OUTPUT VOLTAGE Burst 300 ± 15 % mV DC level 2 V dc 75 ±...

  • Page 15: Feature Board

    PIP&PAP and CTI applications performed with that feature board. For PIP&PAP application Micronas SDA9488/SDA9489 and for CTI application Toshiba TA1366FG is used. There is a socket on the board for external YUV input which will be used for DVD or IDTV application with PIP&PAP and CTI feature.

  • Page 16: Audio Block

    2.2.3 AUDIO BLOCK 2.2.3.1 AUDIO AMPLIFIER TDA8928J 2X10W class D amplifier is used for audio amplification. It is supplied by +14V and –14V to give 2X10W output to 8ohm. loads by %10 THD.
  • Page 17 Audio inputs Main_L and Main_R is applied via voltage comparator LM393 to amplifier. swicthing outputs are then filtered by 33UH and 470NF. SOUND PERFORMANCE SOUND CALL UP TIME Max. 4 sec. MAXIMUM AUDIO OTPUT POWER (RF INPUT) MAXIMUM AUDIO OTPUT POWER (EXTERNAL INPUT) THD AT MAXIMUM AUDIO OUTPUT POWER (RF INPUT) THD AT MAXIMUM AUDIO OUTPUT POWER (EXTERNAL INPUT) THD AT 50 mW AUDIO OUTPUT POWER (RF INPUT)

  • Page 18: Headphone Amplifier

    2.2.3.2 HEADPHONE AMPLIFIER Headphone output is achieved by I2S out. I2S output is converted to anolog signal by DAC CS4334 and then applied to TDA1308T amplifier. SubWoofer output is achieved by the same way, I2S ouptut is converted to analog signal by DAC CS4334 and applied to external SubWoofer amplifier board.DAC CS4334 will work at a rate of 32Fs CS4334 is disabled.

  • Page 19: Pop Noise Protection Circuit

    2.2.2.3 POP NOISE PROTECTION CIRCUIT This circuit is used to prevent pop noise in AC turn-off. While TV is working due to +14V. T1 is OFF . In turn-0ff situation BE voltage of T1 becomes negative and transistor goes to ON condition ,so it drives T2 and T2 pull-down mute pin to perform muting.

  • Page 20: Deflection & Display Block

    2.2.3 DEFLECTION & DISPLAY BLOCK 2.2.3.1 Horizontal Deflection Deflection block consist of following main parts, Horizontal driver transistor (Q601), Horizontal driver (TR600), HOT (Horizontal Output Transistor) (Q600), FBT (TR601), E/W transistor (Q602), E/W coil (L601), E/W injection Coil (Bridge Coil) (L602), Linearity Coil (L603), Flyback Capacitors (C608, C607), S-correction capacitor (C615 ve C613),...

  • Page 21: Vertical Deflection

    2.2.3.2 Vertical Deflection TDA8359J (IC502) vertical amplifier is used for vertical deflection. It’s 3,2A. current capability makes it enable to drive all 50Hz. CRT screen sizes. Differential vertical drive signals; resistor network at inputs are chosen CF type to minimize temperature sensitivity of TV set. Those resistors can be changed to MF type in case of heat run failure.

  • Page 23: Crt Board

    2.2.3.3 CRT Board TDA6108AJF is used as RGB amplifier. Main feature of that triple amplifier is the increased fixed gain of 81. It’s 8 MHz. Bandwidth at 100Vpp video signal makes it enable to use in all 50Hz. TV applications.

  • Page 24: Rotation

    CRT board have single and double focus CRT socket options. There are CC type 1,5K series flash current limiting resistors (R903, R904, R905) on the RGB lines. In addition to resistors BAV21 clamp diodes (IC901,IC902,IC903) are introduced. Spot Killer circuit pulls G1 to –200V by Q700 at turn off instant.

  • Page 25: X-Ray Protection

    2.2.3.5 X-RAY PROTECTION This circuit is used to protect the system X-ray caused by HV. While Anode voltage is bellow 33kv, T1 is off due to 80 volt because BE voltage of T1 becomes negative. While Anode voltage is above 33 kv. 80 voltage increases, it becomes approximately 90 volt.

  • Page 26: Screen & Focus Short Circuit Protection

    2.2.3.7 SCREEN & FOCUS SHORT CIRCUIT PROTECTION Above circuit is used for protection against screen & focus grounding. Basicly the base of PNP transistor Q609 is connected to screen&focus potentiometer of FBT, in another words FBT focus pack is connected to ground via R654. The voltage at the base of that transistor is normally higher then the zener voltage at the emitter.
  • Page 27 GEOMETRY PERFORMANCE ASPECT RATIO NON-LINEARITY (Horizontal & Vertical) % 10 DE-CENTERING (Horizontal & Vertical) OVER-SCANNING (Top, Bottom, Left, Right) % 2,5 UNDER-SCANNING (Top, Bottom, Left, Right) % 97,5 RASTER ROTATION / TILT 3 mm. PARALELLOGRAM (Left counter, Right Counter) % 1,5 TARPEZIUM (Horizontal, Vertical) % 1,5 OUTLINE DISTORTION (Top, Bottom, Right, Left outline distortion)
  • Page 28 RINGING No visible effect allowed SMEARING % 10 No flicker effect caused by brightnes FLICKER control allowed INTERLACE AND JITTER No jitter is allowed HANOVER BLIND No hanover blind is allowed HUM ON VISION No hum bars allowed in picture FLYBACK LINES No visible flyback line allowed FOLDOVER...

  • Page 29: Smps Block

    2.2.4 SMPS BLOCK 2.2.4.1 PRIMARY BLOCK AC power applied via AC inlet, line filter components prevent chassis from incoming noise of AC line, also prevents AC line against created noises by TV. Bridge rectifier and bulk capacitor converts AC voltage to DC voltage. Applied DC voltage to primary winding is then swicthed via MOSFET by primary controller in a controlled manner.

  • Page 30: Secondary Block

    2.2.4.2 SECONDARY BLOCK Switching primary winding of SMT induces voltages to secondary windings of SMT. Induced voltages are then rectified by secondary recitification diodes and capacitors. Secondary block consist of following main parts, Optocoupler for feedback (IC805), Shunt Requlator for Requlation at Normal Mode (IC806), B+ Sense Resistors for Apply Shunt Requlator (R833, R834, VR800, R831), Rectifier and DC line Components for B+ (D817, C827, C828, C826, L805, D811, R867), B+ Over Current Sense Components (R837,C840,R850, R838, Q806, R851, R853, C850,D813),...
  • Page 31 150V / 800mA +13,5V / 1,5A - 13,5V / 1,5A + 14V / 1A 8V / 1A 22V / 800mA Stand-by and Normal-mode controlled by microcontroller. On/Off port is high when TV is in stand-by and low at normal-mode. POWER SUPPLY PERFORMANCE USABLE MINIMUM AND MAXIMUM OPERTAING VOLTAGES 170 V.

  • Page 32: Cabeling

    2.2.5 CABELING RGB cables are shown below. First is the RGB signal cable. Second is the RGB power cable. Pin NO Signal Blue Green BLKIN BSVM...
  • Page 33 Pin NO Signal +14 volt +80 volt EHTINFO HEATER 200 volt...

  • Page 34: Cable Specs

    2.2.6 CABLE SPECs 2.2.6.1 RGB CABLE...

  • Page 36: 200V Cable (With Bsvm)

    2.2.6.2 200V CABLE (with BSVM)

  • Page 38: 200V Cable (With Bsvm)

    2.2.6.3 200V CABLE(without BSWM)

  • Page 40: Saw Filter

    2.2.7. SAW FILTER K3953M: Standard B/G, D/K, I, L/L’ Features TV IF video filter with Nyquist slopes at 33,90 MHz and 38,90 MHz Constant group delay Suitable for CENELEC EN 55020 Terminals Tinned CuFe alloy Pin configuration 1 Input 2 Input - ground 3 Chip carrier - ground 4 Output 5 Output...

  • Page 41: Tuner

    2.2.8. TUNER The hardware and software of the TV is suitable for tuners, supplied by different companies, which are selected from the Service Menu. These tuners can be combined VHF, UHF tuners suitable for CCIR systems B/G, H, L, L´, I/I´, and D/K. The tuning is available through the digitally controlled I bus (PLL).

  • Page 42: Ak49 Chassis Manual Adjustments Procedure

    AK49 CHASSIS MANUAL ADJUSTMENTS PROCEDURE Before starting with the alignment procedure, make sure that all the potentiometers on the chassis and also screen and focus pots are in the medium position. 3.1. SMPS B+ ADJUSTMENT Prior to first run of TV chasis , FBT screen and focus potentiometers should be set to middle positions then B+ voltage is measured.

  • Page 43: Screen Adjustment

    3.4 SCREEN ADJUSTMENTS For screen adjustment VG2 item should be selected at the service menu. then the screen potentiometer is gently adjusted until the “STABLE IN” sign appears.

  • Page 44: Ak49 Chassis Production Service Mode Adjustments

    4 15.AK49 CHASSIS PRODUCTION SERVICE MODE ADJUSTMENTS All system, geometry and white balance alignments are performed in production service mode. Before starting the production mode alignments, make sure that all manual adjustments are done correctly. To start production mode alignments enter the MAIN MENU and then press the digits 4, 7, 2 and 5 To store the settings press “OK”...
  • Page 45 INIT S-No Description MinMax Def. INIT Initialise NVM On/Off COFF S-No Description MinMax Def. COFF Cut off S-No Description MinMax Def. Vertical scan disable 0..63 S-No Description MinMax Def. 0..63 Adjustment Vg2 voltage. AGCSPD S-No Description MinMax Def. AGCSPD IF AGC speed 0..3 AGCTO S-No...
  • Page 46 tube. Check and readjust V-SHIFT item if the adjustment becomes improper after some other geometric adjustments are done. S-No Tanım MinMax Def. VERT SHIFT Vertical shift for Wide Screen 4:3, 16:9 0..63 VERT AMP Change Vertical Amplitude by pressing “◄/►” buttons till horizontal black lines on both the upper and lower part of the test pattern become very close to the upper and lower horizontal sides of picture tube and nearly about to disappear.
  • Page 47 EW WIDTH Change EW width by pressing “◄/►” buttons till no under-scan condition will happen, i.e. no white bars on the left and right side of the test pattern will be visible nor picture will be so wide. Check and readjust H-SIZE item if the adjustment becomes improper after some other geometric adjustments are done.
  • Page 48 UC PARAB Change Upper Correction by pressing “◄/►” buttons till vertical lines at the upper corners of the picture frame become vertical and parallel to vertical corner sides of picture tube. Check and readjust U.COR item if the adjustment becomes improper after some other geometric adjustments are done.
  • Page 49 TUBE S-No Description MinMax Def. TUBE 0 = 16:9 4:3 picture tube used or 16:9 Depends 1 = 4:3 picture tube used chassis selected. 60HZ EWW S-No Description MinMax Def. 60HZ EWW 60Hz EW Width offset 0..63 60HZ HSH S-No Description MinMax Def.
  • Page 50 ROT-M S-No Description MinMax Def. ROT-M Enable Rotation item in the menu. 0..1 When the reproduction of 4 : 3 pictures on a 16 : 9 picture tube is realised by means of a reduction of the horizontal scan amplitude the edges of the picture may slightly be disturbed. This effect can be prevented by adding an additional blanking to the RGB signals.
  • Page 51 The IF-PLL demodulator uses an internal VCO (no external LC-circuit required) which is calibrated by means of a digital control circuit which uses the clock frequency of the m-Controller as a reference. The required IF frequency for the various standards can be set S-No Description MinMax...
  • Page 52 B1-H S-No Description MinMax Def. B1-H Tuner VHF1 Boundary High Byte 0..255 B1-L S-No Description MinMax Def. B1-L Tuner VHF1 Boundary Low Byte 0..255 B2-H S-No Description MinMax Def. B2-H Tuner VHF3 Boundary High Byte 0..255 B2-L S-No Description MinMax Def.
  • Page 53 YAV1 S-No Description MinMax Def. YAV1 Y-delay adjustment for AV-1 0..15 YAV2 S-No Description MinMax Def. YAV2 Y-delay adjustment for AV-2 0..15 Y_S1 S-No Description MinMax Def. Y_S1 Y-delay adjustment for S-VHS-1 0..15 Y_S2 S-No Description MinMax Def. Y_S2 Y-delay adjustment for S-VHS-2 0..15 COMB S-No...
  • Page 54 BLUS S-No Description MinMax Def. BLUS Adjusts Black stretch functions 0 = Disable 1 = Enable WHTS S-No Description MinMax Def. WHTS Adjusts Black stretch functions 0..3 CLPR S-No Description MinMax Def. CLPR Soft Clipping Level 0..3 OVSH S-No Description MinMax Def.
  • Page 55 S-No Description MinMax Def. Scan velocity Modulation mode 0:Off Video/OSD 1:Video 2:TXT/OSD 3:Video/OSD SOPW S-No Description MinMax Def. SOPW SCAVEM ( Scan Velocity Modulator) 0..3 text signal pulse width SOTM S-No Description MinMax Def. SOTM SCAVEM ( Scan Velocity Modulator) 0..7 text output to Video processor...
  • Page 56 WPRN S-No Description MinMax Def. WPRN White point Red for Normal 0..63 WPGN S-No Description MinMax Def. WPGN White point Green fpr Normal 0..63 WPBN S-No Description MinMax Def. WPBN White point Blue for Normal 0..63 BLORN S-No Description MinMax Def.
  • Page 57 BLORW S-No Description MinMax Def. BLORW Black level offset Red for Warm 0..63 BLOGW S-No Description MinMax Def. BLOGW Black level offset Green for Warm 0..63 S-No Description MinMax Def. Switch-off in vertical overscan On/Off S-No Description MinMax Def. Forced slicing level for vertical sync 0..1 S-No Description...
  • Page 58 S-No Description MinMax Def. Cathode drive level 0..15 S-No Description MinMax Def. Black current stabilization On/Off S-No Description MinMax Def. Enable vertical guard (RGB blanking) On/Off OSVE S-No Description MinMax Def. OSVE the black current measuring lines in the Enable Enable overscan Disable...
  • Page 59 AV3I S-No Description MinMax Def. AV3I Enable/disable AV3 0 = Disable 1 = enable FAVI S-No Description MinMax Def. FAVI Enable/disable Front AV 0 = Disable 1 = Enable BAVI S-No Description MinMax Def. BAVI Enable/disable BAV VESI S-No Description MinMax Def.
  • Page 60 SSTDBG S-No Description MinMax Def. SSTDBG Enable/disable Sound Standard BG 0..1 SSTDI S-No Description MinMax Def. SSTDI Enable/disable Sound Standard I 0..1 SSTDDK S-No Description MinMax Def. SSTDDK Enable/disable Sound Standard DK 0..1 SSTDDL S-No Description MinMax Def. SSTDL Enable/disable Sound Standard L 0..1 CNFG S-No...
  • Page 61 OPEQ S-No Description MinMax Def. OPEQ Adjusts Equalizer functions 0 = Disable 1 = Enable DLBY S-No Description MinMax Def. DLBY 0 =Disable Adjusts Dolby modes 1 =Virtual Dolby Sur.422 2 =Virtual Dolby Sur.423 3 = Dolby Pro Logic için OTRU S-No Description...
  • Page 62 OPAVL S-No Description MinMax Def. OPAVL 0..1 S-No Description MinMax Def. AVL is OFF/ON 0..1 DECL S-No Description MinMax Def. DECL FM Stereo decoder output level adjust 0..31 MNLV S-No Description MinMax Def. MNLV Mono output level adjust 0..31 ADCAM S-No Description MinMax...
  • Page 63 AV2 PRESCL S-No Description MinMax Def. AV2 PRESCL External AV level adjust 0..31 S-No Description MinMax Def. Selection of audio output signal on AUDEEM pin TXSPLT S-No Description MinMax Def. TXSPLT Select only Full screen or 0 = Full screen Split Split screen available 1 = Split screen...
  • Page 64 PATVA S-No Description MinMax Def. PATVA PAT Vertical Amplitude 0..63 PATVZ S-No Description MinMax Def. PATVZ PAT Vertical Zoom 0..63 PATHS S-No Description MinMax Def. PATHS PAT Horiznatal Shift 0..63 TXTBRI S-No Description MinMax Def. TXTBRI Teletext Brightness 0..63 TXTCON S-No Description MinMax...
  • Page 65 TSLP S-No Description MinMax Def. 0 = Disable Enable/disable Sleep 1 = Enable Timer TREM S-No Description MinMax Def. TREM Enable/disable Timer 0 = Disable Depends 1 = Enable (UNUSED) on the chassis selected S-No Description MinMax Def. Enable/disable Switch 0 = Disable Depends 1 = Enable...
  • Page 66 PWPRF S-No Description MinMax Def. The startup behaviour can be aligned 0 = Fast PWPRF Perfect between fast startup and perfect startup. 15 = Perfect PWRES S-No Description MinMax Def. PWRES Enabled: The TV will be 0 = Disable Enable 1 = Enable restored to the last state at power on.
  • Page 67 PVCTMV S-No Description MinMax Def. PVCTMV 0..63 Preset Video Movie Contrast PVCLMV S-No Description MinMax Def. PVCLMV Preset Video Movie Colour 0..63 PVSHMV S-No Description MinMax Def. PVSHMV 0..63 Preset Video Movie Sharpness PVBRSP S-No Description MinMax Def. PVBRSP Preset Video Sports Brightness 0..63 PVCTSP S-No...
  • Page 68 PVCTWK S-No Description MinMax Def. PVCTWK Preset Video Weak Contrast 0..63 PVCLWK S-No Description MinMax Def. PVCLWK Preset Video Weak Colour 0..63 PVSHWK S-No Description MinMax Def. PVSHWK 0..63 Preset Video Weak Sharpness PABAVO S-No Description MinMax Def. PABAVO 0..63 Preset Audio Voice Bass PATRVO S-No...
  • Page 69 PAB4VO S-No Description MinMax Def. PAB4VO 0..63 Preset Audio Voice Equalizer Band 4 PAB5VO S-No Description MinMax Def. PAB5VO Preset Audio Voice Equalizer Band 5 0..63 PABAMU S-No Description MinMax Def. PABAMU 0..63 Preset Audio Music Bass PATRMU S-No Description MinMax Def.
  • Page 70 PAB5MU S-No Description MinMax Def. PAB5MU 0..63 Preset Audio Music Equalizer Band 5 PABATH S-No Description MinMax Def. PABATH Preset Audio Theatre Bass 0..63 PATRTH S-No Description MinMax Def. PATRTH 0..63 Preset Audio Theatre Treble PAB1TH S-No Description MinMax Def. PAB1TH 0..63 Preset Audio Theatre Equalizer Band 1...
  • Page 71 PABASP S-No Description MinMax Def. PABASP 0..63 Preset Audio Speech Bass PTRSP S-No Description MinMax Def. PTRSP Preset Audio Speech Treble 0..63 PAB1SP S-No Description MinMax Def. PAB1SP 0..63 Preset Audio Speech Equalizer Band 1 PAB2SP S-No Description MinMax Def. PAB2SP 0..63 Preset Audio Speech Equalizer Band 2...
  • Page 72 CTI2 S-No Description MinMax Def. CTI2 Second control byte for CTI 0..255 CTI3 S-No Description MinMax Def. CTI3 Third control byte for CTI 0..255 P BS1 S-No Description MinMax Def. P BS1 PIP Tuner Band VHF1 0..15 P BS2 S-No Description MinMax Def.
  • Page 73 P B2L S-No Description MinMax Def. P B2L PIP Tuner VHF3 Boundary Low Byte 0..255 P BRI S-No Description MinMax Def. P BRI PIP IC Brightness 0..15 P CON S-No Description MinMax Def. P CON PIP IC Contrast 0..15 P AGC S-No Description MinMax...
  • Page 74 WPB-RGB S-No Description MinMax Def. WPB-RGB White point Blue offset for RGB 0..63 V-3D S-No Description MinMax Def. V-3D Virtual Dolby MAXCOL S-No Description MinMax Def. MAXCOL MAX allowed user colour 0..63 MAXBRI S-No Description MinMax Def. MAXBRI MAX allowed user brightness 0..63 MAXCON S-No...

  • Page 75: Menu Language Table

    5. MENU LANGUAGE TABLE English German French Spanish Portuguese Italian Swedish Group 1 WEST Group 2 EAST Group 3 ARABIC Group 4 IDTV Turkish Hungary Czech Polish Croatian Rumanian Dutch Group 1 WEST Group 2 EAST Group 3 ARABIC Group 4 IDTV Finnish Slovakian Slovenian...

  • Page 76: Picture Modes

    6. PICTURE MODES...

  • Page 80: Circuit Diagrams

    7.CIRCUIT DIAGRAMS...

  • Page 85: Appendix

    8 APPENDIX DEFINITIONS, ACRONYMS AND ABBREVIATIONS Dual Carrier Stereo a.k.a. German Stereo. Automatic Channel Installation, Automatic Colour Limiting Analogue to Digital Converter Audio Frequency Automatic Frequency Control Automatic Gain Control Auto Kine Biasing Application Programmers Interface. Automatic Standard Detection Audio Signal Processor (on Picasso) Automatic Tuning System, External Audio and Video TV peripheral.
  • Page 86 Horizontal Shift Intermediate Frequency. Normally the output of the tuner. Inter Integrated Circuit Inter Integrated Sound LibCoMa Library Configuration Manager. Loudspeaker MIPS Million Instructions Per Second Japanese multiplexed sound standard Multi Standard NICAM Near Instantaneously Compacted Audio Multiplex. NTSC National Television System Committee. Colour encoding system. Non-Volatile Memory On Screen Display OSRP...
  • Page 87 Static Standard Selection State The condition of a component that results in a particular observable behaviour. Status Handler A step that handles a status change, by managing the response to the change. SetTop Box TOP(TEXT) Table Of Pages, Special way of accessing teletext pages Teletext Ultra High Frequency User Interface...
  • Page 88 not skipped marked as . When all program numbers are skipped then the highest program number is used. Program number: A program number identifies a location in NVM. At this location all program information, like frequency, lock, AFC, etc., can be found. Selecting a program invokes activating the program information.

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