Toshiba 28YT56 Service Manual Download

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YAV1

S-No

OSD

Description

MinMax

Def.

054 YAV1

Y-delay adjustment for

AV-1

0..15

YAV2

S-No

OSD

Description

MinMax

Def.

055 YAV2

Y-delay adjustment for

AV-2

0..15

Y_S1

S-No

OSD

Description

MinMax

Def.

056 Y_S1

Y-delay adjustment for

S-VHS-1

0..15

Y_S2

S-No

OSD

Description

MinMax

Def.

057 Y_S2

Y-delay adjustment for

S-VHS-2

0..15

COMB

S-No

OSD

Description

MinMax

Def.

058 COMB

Comb filter mode

comb filter active 1

comb filter not active 0

Depends on
the chassis
selected.

BLUBKG

S-No

OSD

Description

MinMax

Def.

060 BLUBKG

Determines

background

colour and mute option

0 = No Mute

1 = Black Mute

2 = Blue Mute

Blue Mute

NOMT

S-No

OSD

Description

MinMax

Def.

061

NOMT

Enables Blue mute when BLUBKG

disabled user item for the menu

0 = No Mute

1 = Blue Mute

BLCS

S-No

OSD

Description

MinMax

Def.

062

BLCS

Adjusts Black stretch functions

0 = Disable

1 = Enable

Summary of Contents for 28YT56

Page 1: ...SERVICE MANUAL PRINTED IN UK 2003 C COLOURTELEVISION 28YT56 32YT56 TOSHIBA ...

Page 2: ...9 2 2 1 7 Port Allocations 10 2 2 1 8 Power Management 11 2 2 1 9 Input Output Performance 12 2 2 1 10 Feature Board 14 2 2 2 Audio Block 15 2 2 2 1 Audio Power Amplifier 15 2 2 2 2 Headphone Amplifier 17 2 2 2 3 Pop Noise Protection Circuit 18 2 2 3 Deflection Display Block 19 2 2 3 1 Horizontal Deflection 19 2 2 3 2 Vertical Deflection 20 2 2 3 3 CRT Board 22 2 2 3 4 Rotation 23 2 2 3 5 X RAY Pr...

Page 3: ...BSVM 37 2 2 7 SAW FILTER 39 2 2 8 TUNER 40 3 AK49 CHASSIS MANUAL ADJUSTMENTS PROCEDURE 41 3 1 SMPS B ADJUSTMENT 41 3 2 AFC ADJUSTMENT 41 3 3 FOCUS ADJUSTMENT 41 3 4 SCREEN ADJUSTMENT 42 4 AK49 CHASSIS PRODUCTION SERVICE MODE ADJUSTMENTS 43 5 MENU LANGUAGE TABLE 74 6 PICTURE MODES 75 7 CIRCUIT DIAGRAMS 79 8 APPENDIX 84 DVB T MODUL SERVICE MANUAL ...

Page 4: ...3 Document History Versi on Date Document Revision and Review History Status Prepared by Approved by v0 1 14 12 2004 Draft YAVUZ İNCE SERDAR GÜLTEN KAGAN M PANCAR File Name AK49_SM_VO1 ...

Page 5: ...capable of driving CRT sizes in the range of 24 33 including realflat and 16 9 CRT s The chassis has the following main features Remote Control Colour Standards PAL SECAM NTSC Transmission standards B G L L I I DK Teletex 10 pages Intercarier QSS sound proccessing Multi standard alignment free PLL tuning PIP PAP POP PAT TAT CTI option 2D Comb Filter 2D 4H Headphone with volume control SubWoofer op...

Page 6: ...T Vertical Amplifier Line Driver EW Amp AUDIO Audio Amp DAC Comperator CRT BOARD RGB Amp Feature Board PIP CTI IC s 2 2 2 UOC III ULTIMATE ONE CHIP UOC3 is composed of microcontroller video proccessor sound proccessor and IF blocks So there are digital and anolog parts in it named as Picasso and Cosmic respectively as shown below UOC3 has standard and face down versions pin squence differs between...

Page 7: ...6 Block diagram of the TV System with face down version is ...

Page 8: ...7 ...

Page 9: ...9 FBLK 52 SCART1 AUDIO input is AUDIOin_3 L R 73 72 SCART1 AUDIO output is AUDIOout_SR SL 93 92 Same output also used as SCART3 Audio output 2 2 2 3 SCART2 SCART2 video input is CVBS4 78 SCART2 video input is also applied to Video Switch IC TEA6415C for PIP application SCART2 supports SVHS input SVHS C input is C4 77 Y input is use same video input SCART2 video output is CVBSO PIP 65 That video ou...

Page 10: ...deo Switch IC TEA6415C for PIP application SCART3 video output will be SCART1 video output via a buffer circuit SCART3 audio inputs are AUDIOin_4 L R 80 79 These audio inputs will also used for optional BAV L R and VESTELBUS L R audio inputs SCART3 audio out will be through SCART1 audio outputs via a buffer circuit 2 2 2 5 VESTELBUS IDTV DVD Combi VESTELBUS video input is CVBS1 81 so VESTELBUS wil...

Page 11: ...k 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 SCL 20 SDA SDA 18 PWM ROT TILT 17 PWM0 PAP_LOW 16 PWM1 SW 15 PWM2 S_RESET 14 ADC0 AV1_STAT 13 ADC1 AV2_STAT 10 ADC2 AV3_STAT DVD SENSE 9 ADC3 KEYB SERV 7 PWM3 MUTE 6 PWM4 SAW_SW 3 INT2 IRQ DVB 2 UARTBUS RXD 1 UART BUS TXD ...

Page 12: ... 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 for UOC3 We don t have 8V even for audio outputs 1 2V RMS achieved with 5V All the voltages are produced by SMPS except 1 8V RESET 1V8 digital and 1V8 analogue are produced by using 2V5 DECDIG signal DECDIG signal is given ...

Page 13: ...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 While S_Reset port is active FETs become ON 1V8 digital is shorted to ground All the supply architecture of the UOC3 is as follows ...

Page 14: ...EDANCE maximum 1 KΩ PIN 8 SWITCHING Standard PRIORITY BETWEEN SCARTS Vestel Standard RECEPTION PERFORMANCE USABLE MINIMUM SIGNAL LEVEL 50 dBµV USABLE MAXIMUM SIGNAL LEVEL 90 dBµV COLOUR KILLER LEVEL 32 dBµV SOUND KILLER LEVEL 30 dBµV SYNCHRONISING SENSITIVITY LEVEL 35 dBµV FM GERMAN STEREO SENSITIVITY LEVEL 40 dBµV NICAM STEREO SENSITIVITY LEVEL 40 dBµV BTSC STEREO SENSITIVITY LEVEL NO BTSC NOISE ...

Page 15: ...application with PIP PAP and CTI feature There are switches on the board for adaptation of application configurations Only CTI Application YUV output from UOC3 comes to CTI IC TA1366FG and goes back to UOC3 CTI IDTV or DVD CTI PIP Application YUV output from UOC3 comes to CTI IC TA1366FG then inputs to PIP IC SDA9488 Any desired external CVBS signal is directed to PIP IC via video switch and used ...

Page 16: ...15 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: ...UDIO OUTPUT POWER EXTERNAL INPUT 3 IC spec SIGNAL TO NOISE RATIO RF INPUT 50 db SIGNAL TO NOISE RATIO EXTERNAL INPUT 40 dB SIGNAL TO BUZZ RATIO 40 dB CROSSTALK TV TO AV AV TO TV 60 dB RESIDUAL SOUND RF INPUT 20 mW rms RESIDUAL SOUND EXTERNAL INPUT 20 mW rms FREQUENCY RESPONSE RF INPUT 100 Hz 10 kHz FREQUENCY RESPONSE EXTERNAL INPUT 100 Hz 10 kHz BASS FREQUENCY RESPONSE RF INPUT 10 2 dB BASS FREQUE...

Page 18: ...rd DAC CS4334 will work at a rate of 32Fs MCLK LRCK 512 256 or 128 and De emphasis feature of CS4334 is disabled HEADPHONE PERFORMANCE MAXIMUM AUDIO OUTPUT POWER RF INPUT 22 5 2 5 mWrms MAXIMUM AUDIO OUTPUT POWER EXTERNAL INPUT 22 5 2 5 mWrms THD AT MAXIMUM AUDIO OUTPUT POWER RF INPUT 10 THD AT MAXIMUM AUDIO OUTPUT POWER EXTERNAL INPUT 10 THD AT 0 5 mW AUDIO OUTPUT POWER RF INPUT 1 THD AT 0 5 mW A...

Page 19: ... 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: ...pplied to line driver transistor by a capacitor Line driver produces necessary base currents parallel diode to base series resistor speeds up the reverse base current UOC3 has soft start and soft stop features to have more safe operation There are two base current adjustment resistors on the circuit Collector current differs according to CRT sizes Tube dependent components are choosen to fit best ...

Page 21: ...ility 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 Power resistor R633 R634 values will change according to CRT sizes ...

Page 22: ...21 ...

Page 23: ...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: ...uit pulls G1 to 200V by Q700 at turn off instant BSVM amplifier circuit modulates the beam to have sharper images at the adges of CRT Basicly it amplifies the software delayed controlled BSVM signal and apply it to BSVM winding of neck 2 2 3 4 ROTATION PWM rotation output of UOC3 is first converted to DC then applied to rotation circuit OPAMP LM358N IC600 and medium power transistors Q601 Q602 per...

Page 25: ...ecomes negative While Anode voltage is above 33 kv 80 voltage increases it becomes approximately 90 volt At that condition T1 is ON due to 90 volt because BE voltage of T1 becomes positive so it drives protection 2 2 3 6 DYNAMIC FOCUS E W injection signal is converted to sinus shape after it passes LC circuit Then the signal is amplified via coil and applied to Dynamic focus ...

Page 26: ...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 When any short circuit occurs at focus or screen the base voltage is decreased to a value lower then zener voltage that forces transistor to conduction and trigers another circuit which will force UC to protection mode In protection mode LED becomes RED and...

Page 27: ...CRT spec EHT REGULATION 1 5 HORIZONTAL FLYBACK VOLTAGE HOT spec HORIZONTAL FLYBACK TIME 12 usec Max VERTICAL FLYBACK VOLTAGE Vertical IC spec VERTICAL FLYBACK TIME 1 msec Max SCREEN VOLTAGE CRT spec FOCUS VOLTAGE CRT spec FOCUSING PICTURE PERFORMANCE IMAGE CALL UP TIME 9 sec Max WHITE BALANCE x 285 3 y 293 3 MAXIMUM LUMINANCE 120 10 Cd m VIDEO BANDWIDTH 3 5 Mhz Min SIGNAL TO NOISE RATIO 40 dB min ...

Page 28: ...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 No foldover in the picture allowed CURTAIN EFFECT No oscillation in picture allowed MANHEIM EFFECT 1 5 max MISCONVERGENCE 1 8 max ...

Page 29: ...n supplied by shunt regulator and opto coupler according to that information adjusts on time of MOSFET for required power After the start up in normal operation mode SMPS controller is supplied by SMT Primary block consist of following main parts AC Inlet PL800 Fuse F800 Varistor R800 and R802 Line Filter For EMC C801 L800 C802 SMPS Controller IC804 SMPS Controller supply for first Start up and at...

Page 30: ...840 R850 R838 Q806 R851 R853 C850 D813 Audio and Supply Rectifiers and DC line Components D818 C829 C831 R839 C841 D820 C830 C832 R840 C842 14 Supply Rectifiers and DC line Components D819 C833 C843 8V Supply Rectifiers and DC line Components D808 C834 C844 8V Controller Supply Rectifiers and DC line Components at Normal Mode D809 C836 8V Controller Supply Rectifiers and DC line Components at Stan...

Page 31: ... VOLTAGES 170 V 270V 170 V min 270 V max DROP OUT VOLTAGE 155 V START UP VOLTAGE 170 V POWER CONSUMPTION 1W in Stand by 160W max SMPS OUTPUT VOLTAGES 0 5 V of design value SMPS FET DRAIN VOLTAGE 90 of MOSFET spec SMPS FET GATE VOLTAGE 90 of MOSFET spec SMPS FET OPERATING FREQUENCY Fix S M T 20 150V 800mA 21 GND 18 13 5V 1 5A 19 GND 17 13 5V 1 5A 15 14V 1A 14 8V 1A 16 GND 13 22V 800mA ...

Page 32: ...31 2 2 5 CABELING RGB cables are shown below First is the RGB signal cable Second is the RGB power cable Pin NO Signal 1 Blue 2 Green 3 Red 4 GND 5 BLKIN 6 GND 7 BSVM ...

Page 33: ...32 Pin NO Signal 1 14 volt 2 80 volt 3 EHTINFO 4 HEATER 5 GND 6 7 200 volt ...

Page 34: ...33 2 2 6 CABLE SPECs 2 2 6 1 RGB CABLE ...

Page 35: ...34 ...

Page 36: ...35 2 2 6 2 200V CABLE with BSVM ...

Page 37: ...36 ...

Page 38: ...37 2 2 6 3 200V CABLE without BSWM ...

Page 39: ...38 ...

Page 40: ... MHz Constant group delay Terminal and Pin configuration are the same with K3953M K9356M Standard B G D K I L Features TV IF audio filter with pass band for sound carriers at 32 40 MHz D K L 32 90 MHz I and 33 40 MHz B G Terminal and Pin configuration are the same with K3953M K9656M Standard B G D K I L L Features TV IF audio filter with two channels Channel 1 L with one pass band for sound carrie...

Page 41: ... has been designed for direct drive of a wide variety of SAW filters with sufficient suppression of triple transient Features of UV1316 1 Member of the UV1300 family small sized UHF VHF tuners 2 Systems CCIR B G H L L I and I OIRT D K 3 Digitally controlled PLL tuning via I2 C bus 4 Off air channels S cable channels and Hyperband 5 World standardized mechanical dimensions and world standard pinnin...

Page 42: ... adjusted to specified value below SYSTEM VOLTAGE TYPE OF CRT 145 V 0 5V 32 16 9 RF Panasonic W76EKW10X21 145 V 0 5V 28 16 9 RF Thompson THO021X131 3 2 AFC ADJUSTMENTS AFC is automatically adjusted from software when f IF is selected 38 9MHz for negative modulation and 33 9MHz for positive modulation from the service menu 3 3 FOCUS ADJUSTMENTS TV is tuned to the signal Then focus potantiometer the...

Page 43: ...42 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: ...e the settings press OK button Entire service menu parameters of AK49 CHASSIS are listed below FAPS The option of APS Automatic Program Searching item are ON and OFF In order to active APS installation procedure when TV is turned for the very first time select ON Inorder to start TV without APS installation procedure select OFF S No OSD Description MinMax Def 001 FAPS First APS activates factory s...

Page 45: ...CSPD IF AGC speed 0 3 1 AGCTO S No OSD Description MinMax Def 009 AGCTO AGC Take over Also used as TOP when an internal AGC tuner is used 0 63 33 VERT ZOOM S No OSD Description MinMax Def 010 VERT ZOOM Vertical zoom for 16 9 0 63 35 VERT SLOP S No OSD Description MinMax Def 011 VERT SLOP Vertical slope 0 63 37 VERT SHIFT Change Vertical Shift by pressing buttons till the test pattern is vertically...

Page 46: ...rection by pressing buttons till the size of squares on both the upper and lower part of test pattern become equal to the squares laying on the vertical center of the test pattern Check and readjust S COR item if the adjustment becomes improper after some other geometric adjustments are done S No OSD Description MinMax Def 014 SCORRECTION S Correction 0 63 11 V LINC S No OSD Description MinMax Def...

Page 47: ...n MinMax Def 018 HOR SHIFT Horizontal shift 0 63 31 EW PARAB Change EW Parabol by pressing buttons till vertical lines close to the both sides of the picture frame become parallel to vertical sides of picture tube without any bending to left or to right side of the screen Check and readjust PARAB item if the adjustment becomes improper after some other geometric adjustments are done S No OSD Descr...

Page 48: ...Check and readjust L COR item if the adjustment becomes improper after some other geometric adjustments are done S No OSD Description MinMax Def Lower Corner Parabola for 16 9 0 63 5 022 LC PARAB Lower Corner Parabola for 4 3 0 63 16 HOR BOW Change Horizantal Bow by pressing buttons till the vertical lines especially ones close to the left and right sides will of equal and symmetrical bending i e ...

Page 49: ... Vertical Shift offset 0 63 31 60HZ VZ S No OSD Description MinMax Def 029 60HZ VZ 60Hz Vertical Zoom offset 0 63 31 TRCKE S No OSD Description MinMax Def 030 TRCKE EHT Tracking mode Vertical only Vertical and EW Vertical only ROT This adjustment only works when the TV has rotation option Change TILT by pressing buttons to rotate the complete raster clock wise and counter clock wise depending on t...

Page 50: ...t S No OSD Description MinMax Def 033 HBL RGB Blanking Mode On Off On WBF A wide blanking pulse can be activated in the RGB outputs by means of the HBL bit in subaddress 43H The start of this blanking can be adjusted by means of the WBF S No OSD Description MinMax Def 034 WBF start of wide blanking 0 15 10 WBR A wide blanking pulse can be activated in the RGB outputs by means of the HBL bit in sub...

Page 51: ...8P75 45P75 38P9 38P0 33P4 33P9 43P008 38P9 OFR S No OSD Description MinMax Def 040 OFR Option Enable Frequency in Install Menu 0 1 1 FFI Fast filter IF PLL increased time constant normal time constant S No OSD Description MinMax Def 041 FFI Fast filter IF PLL 0 1 0 BS1 S No OSD Description MinMax Def 042 BS1 Tuner Band VHF1 0 15 1 BS2 S No OSD Description MinMax Def 043 BS2 Tuner Band VHF3 0 15 2 ...

Page 52: ...dary High Byte 0 255 30 B2 L S No OSD Description MinMax Def 049 B2 L Tuner VHF3 Boundary Low Byte 0 255 2 FRAV S No OSD Description MinMax Def 050 FRAV Peaking center frequency for AV 0 3 0 YSCM S No OSD Description MinMax Def 051 YSCM Y delay adjustment for SECAM 0 15 12 YNTS S No OSD Description MinMax Def 052 YNTS Y delay adjustment for NTSC 0 15 2 YPAL S No OSD Description MinMax Def 053 YPAL...

Page 53: ...VHS 2 0 15 4 COMB S No OSD Description MinMax Def 058 COMB Comb filter mode comb filter active 1 comb filter not active 0 Depends on the chassis selected BLUBKG S No OSD Description MinMax Def 060 BLUBKG Determines background colour and mute option 0 No Mute 1 Black Mute 2 Blue Mute Blue Mute NOMT S No OSD Description MinMax Def 061 NOMT Enables Blue mute when BLUBKG disabled user item for the men...

Page 54: ...scription MinMax Def 069 SVM Delay of RGB output to SVM output 00 ns 25 ns 50 ns 75 ns 100 ns 125 ns 150 ns 175 ns 100 ns VMA S No OSD Description MinMax Def 070 VMA Amplitude of SVM output 0 Off 1 0 8 Vp p 2 1 2 Vp p 3 1 8 Vp p 1 2 Vp p S No OSD Description MinMax Def 066 OVSH Adjusts peaking ratio 0 3 0 S No OSD Description MinMax Def 067 TNTD Default base band tint value 0 63 32 S No OSD Descri...

Page 55: ...y Modulator text output to Video processor earlier than R G and B signals 0 7 7 WPRC S No OSD Description MinMax Def 074 WPRC White point Red for Cold 0 63 32 WPGC S No OSD Description MinMax Def 075 WPGC White point Green for Cold 0 63 32 WPBC S No OSD Description MinMax Def 076 WPBC White point Blue for Cold 0 63 31 BLORC S No OSD Description MinMax Def 077 BLORC Black level offset Red for Cold ...

Page 56: ...Normal 0 63 19 BLORN S No OSD Description MinMax Def 082 BLORN Black level offset Red for Normal 0 63 33 BLOGN S No OSD Description MinMax Def 083 BLOGN Black level offset Green for Normal 0 63 33 WPRW S No OSD Description MinMax Def 084 WPRW White point Red for Warm 0 63 49 WPGW S No OSD Description MinMax Def 085 WPGW White point Green for Warm 0 63 40 WPBW S No OSD Description MinMax Def 086 WP...

Page 57: ...S No OSD Description MinMax Def 090 FSL Forced slicing level for vertical sync 0 1 0 MUS S No OSD Description MinMax Def 091 MUS NTSC Matrix position Japan USA Japan PWL S No OSD Description MinMax Def 092 PWL Peak White limiting 0 15 8 BPS S No OSD Description MinMax Def 093 BPS Bypass chroma temel band On Off On CLPL S No OSD Description MinMax Def 094 CLPL Soft Climping level 0 above PWL level ...

Page 58: ... OSD Description MinMax Def 098 OSVE the black current measuring lines in the overscan Enable Disable Enable COR S No OSD Description MinMax Def 099 COR Coring 0 3 2 WSS S No OSD Description MinMax Def 101 WSS Wide screen signalling 0 Disable 1 Enable 1 GSCRT S No OSD Description MinMax Def 102 GSCRT Golden scart activate zoom accordingly pin8 0 Disable 1 Enable 1 AV2SI S No OSD Description MinMax...

Page 59: ... VESI S No OSD Description MinMax Def 107 VESI Enable disable Vesbus 0 FSVI S No OSD Description MinMax Def 108 FSVI Enable disable FAV S 0 Disable Front SVHS if Op_SVHS is enabled 1 Enable Front SVHS if Op_SVHS is enabled 0 BSVI S No OSD Description MinMax Def 109 BSVI Enable disable BAV S 0 Disable Back SVHS if Op_SVHS is enabled 1 Enable Back SVHS if Op_ SVHS is enabled 0 DVDI S No OSD Descript...

Page 60: ... SSTDL Enable disable Sound Standard L 0 1 1 CNFG S No OSD Description MinMax Def No Audio SSD functions only Mono 0 Mono All Audio SSD except stereo decoder 1 AV Stereo 115 CNFG All Audio SSD functions 2 Stereo 2 CMUTE S No OSD Description MinMax Def 116 CMUTE Enable disable mute when no audio carrier 132 BLNG S No OSD Description MinMax Def 117 BLNG Adjusts Bi Language for Mono and AV stereo 0 D...

Page 61: ...Pro Logic için 0 OTRU S No OSD Description MinMax Def 122 OTRU Adjusts SRS Tru Surround 0 Disable 1 Enable 0 ODUB S No OSD Description MinMax Def 123 ODUB Bass Management 0 OFF 1 DBEMainOn 2 DUBMainOn 3 DBESubWooferOn 4 DUBSubOn 5 BBEOn 0 AVLL S No OSD Description MinMax Def 124 AVLL AVL level 0 15 2 AVLW S No OSD Description MinMax Def 125 AVLW AVL weight 0 1 0 AVLM S No OSD Description MinMax De...

Page 62: ... MNLV S No OSD Description MinMax Def 130 MNLV Mono output level adjust 0 31 15 ADCAM S No OSD Description MinMax Def 131 ADCAM Audio ADC Level for Secam AM 0 31 10 ADCAV S No OSD Description MinMax Def 132 ADCAV Audio ADC Level for AV 0 31 13 NICL S No OSD Description MinMax Def 133 NICL Nicam output level adjust 0 31 15 AV1 PRESCL S No OSD Description MinMax Def 134 AV1 PRESCL External AM level ...

Page 63: ...reen 1 Split screen Split screen TXHPOS S No OSD Description MinMax Def 138 TXHPOS Teletext Single page start point setting 0 63 0 TXEWW S No OSD Description MinMax Def 139 TXEWW Teletext East West Width 0 63 48 TXHPA S No OSD Description MinMax Def 140 TXHPA Teletext left Twin page start point setting 0 63 0 TXHPB S No OSD Description MinMax Def 141 TXHPB Teletext right Twin page start point sett...

Page 64: ...iznatal Shift 0 63 32 TXTBRI S No OSD Description MinMax Def 146 TXTBRI Teletext Brightness 0 63 32 TXTCON S No OSD Description MinMax Def 147 TXTCON Unused 0 1 0 TXTRGB S No OSD Description MinMax Def 148 TXRGB Teletext Contrast 0 15 0 LSEL 1 S No OSD Description MinMax Def 149 LSEL 1 Available Language Selection 0 255 255 LSEL 2 S No OSD Description MinMax Def 150 LSEL 2 Available Language Selec...

Page 65: ... over Timer UNUSED 0 Disable 1 Enable Depends on the chassis selected TOFF S No OSD Description MinMax Def 154 TOFF Enable disable Switch Off Timer UNUSED 0 Disable 1 Enable Depends on the chassis selected TSKP S No OSD Description MinMax Def 155 TSKP Enable disable Commercial skip Timer UNUSED 0 Disable 1 Enable Depends on the chassis selected TRT S No OSD Description MinMax Def 156 TRT Enable di...

Page 66: ...e 1 Enable Enable PWON S No OSD Description MinMax Def 159 PWON The number of keys to switch from STANDBY to POWERON 0 STANDBY and SERVICE 1 UP DOWN Digits 0 9 STANDBY and SERVICE Digits 0 9 STANDBY SERVIS DCXO S No OSD Description MinMax Def 160 DCXO DCXO adjustment 0 127 79 DCXOA S No OSD Description MinMax Def 161 DCXOA Automatic DCXO adjustment On Off Off SSL S No OSD Description MinMax Def 16...

Page 67: ...ness 0 63 32 PVBRSP S No OSD Description MinMax Def 167 PVBRSP Preset Video Sports Brightness 0 63 32 PVCTSP S No OSD Description MinMax Def 168 PVCTSP Preset Video Sports Contrast 0 63 32 PVCLSP S No OSD Description MinMax Def 169 PVCLSP Preset Video Sports Colour 0 63 32 PVSHSP S No OSD Description MinMax Def 170 PVSHSP Preset Video Sports Sharpness 0 63 32 PVBRWK S No OSD Description MinMax Def...

Page 68: ...63 32 PABAVO S No OSD Description MinMax Def 175 PABAVO Preset Audio Voice Bass 0 63 32 PATRVO S No OSD Description MinMax Def 176 PATRVO Preset Audio Voice Treble 0 63 15 PAB1VO S No OSD Description MinMax Def 177 PAB1VO Preset Audio Voice Equalizer Band 1 0 63 20 PAB2VO S No OSD Description MinMax Def 178 PAB2VO Preset Audio Voice Equalizer Band 2 0 63 40 PAB3VO S No OSD Description MinMax Def 1...

Page 69: ...0 63 39 PATRMU S No OSD Description MinMax Def 183 PATRMU Preset Audio Music Treble 0 63 34 PAB1MU S No OSD Description MinMax Def 184 PAB1MU Preset Audio Music Equalizer Band 1 0 63 40 PAB2MU S No OSD Description MinMax Def 185 PAB2MU Preset Audio Music Equalizer Band 2 0 63 50 PAB3MU S No OSD Description MinMax Def 186 PAB3MU Preset Audio Music Equalizer Band 3 0 63 55 PAB4MU S No OSD Descriptio...

Page 70: ...H S No OSD Description MinMax Def 191 PAB1TH Preset Audio Theatre Equalizer Band 1 0 63 30 PAB2TH S No OSD Description MinMax Def 192 PAB2TH Preset Audio Theatre Equalizer Band 2 0 63 55 PAB3TH S No OSD Description MinMax Def 193 PAB3TH Preset Audio Theatre Equalizer Band 3 0 63 63 PAB4TH S No OSD Description MinMax Def 194 PAB4TH Preset Audio Theatre Equalizer Band 4 0 63 50 PAB5TH S No OSD Descr...

Page 71: ...6 PAB2SP S No OSD Description MinMax Def 199 PAB2SP Preset Audio Speech Equalizer Band 2 0 63 44 PAB3SP S No OSD Description MinMax Def 200 PAB3SP Preset Audio Speech Equalizer Band 3 0 63 44 PAB4SP S No OSD Description MinMax Def 201 PAB4SP Preset Audio Speech Equalizer Band 4 0 63 40 PAB5SP S No OSD Description MinMax Def 202 PAB5SP Preset Audio Speech Equalizer Band 5 0 63 24 CTI1 S No OSD Desc...

Page 72: ...nMax Def 210 P BS2 PIP Tuner Band VHF3 0 15 2 P BS3 S No OSD Description MinMax Def 211 P BS3 PIP Tuner Band UHF 0 15 4 P CB S No OSD Description MinMax Def 212 P CB Control byte for PIP Tuner 0 255 142 P B1H S No OSD Description MinMax Def 213 P B1H PIP Tuner VHF1 Boundary High Byte 0 255 12 P B1L S No OSD Description MinMax Def 214 P B1L PIP Tuner VHF1 Boundary Low Byte 0 255 32 P B2H S No OSD D...

Page 73: ...ption MinMax Def 219 P AGC PIP IF AGC 0 255 23 P YPAL S No OSD Description MinMax Def 220 P YPAL Y Delay for PIP 0 15 0 P YSCM S No OSD Description MinMax Def 221 P YSCM Y delay SECAM for PIP 0 15 0 NICAM S No OSD Description MinMax Def 222 NICAM NICAM stereo ON OFF ON OFF 1 WPR RGB S No OSD Description MinMax Def 229 WPR RGB White point Red offset for RGB 0 63 32 WPG RGB S No OSD Description MinM...

Page 74: ...Def 233 MAXCOL MAX allowed user colour 0 63 45 MAXBRI S No OSD Description MinMax Def 234 MAXBRI MAX allowed user brightness 0 63 45 MAXCON S No OSD Description MinMax Def 235 MAXCON MAX allowed user contrast 0 63 28 SAVEFS S No OSD Description MinMax Def 236 SAVEFS Save to factory settings from MENU 0 1 0 LOADFS S No OSD Description MinMax Def 237 LOADFS Load factory setting to MENU 0 1 0 ...

Page 75: ... Rumanian Dutch Group 1 WEST 1 0 0 0 0 0 1 Group 2 EAST 0 1 1 1 1 1 0 Group 3 ARABIC 1 0 0 0 0 0 0 Group 4 IDTV 0 0 0 0 0 0 0 Finnish Slovakian Slovenian Bulgarian Russian Hebrew Arabian Group 1 WEST 1 0 0 0 0 0 0 Group 2 EAST 0 1 1 1 1 0 0 Group 3 ARABIC 0 0 0 0 1 1 1 roup 4 IDTV 1 0 0 0 0 0 0 Greek Ukrainian Danish Norwegian Persian Group 1 WEST 1 0 1 1 0 Group 2 EAST 0 1 0 0 0 Group 3 ARABIC 0 ...

Page 76: ...75 6 PICTURE MODES ...

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Page 80: ...79 7 CIRCUIT DIAGRAMS ...

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Page 85: ...S BlacK Stretch BTSC Broadcast Television Systems Committee USA standard CC Closed Captioning CCC Continuous Cathode Calibration CE Configuration Element CLUT Colour Look Up Table COR Contrast Reduction CVBS Combined Video Blanking and Sync DAC Digital to Analogue Converter DBE Dynamic Bass Enhancement DDEP DEMDEC Easy Programming operation mode of DEMDEC DEMDEC Stereo demodulator decoder part of ...

Page 86: ...Locked Loop PMT Power ManagemenT PP Personal Preferences PS MTS Mainstream Television Solutions PSW Program Status Word PWM Pulse Width Modulation RC 5 Remote Control system RCP Remote Control Preprocessor RF Radio Frequency TV signal broadcast RGB Red Green Blue The colour signals Round robin A style of scheduling where each task is executed in turn provided it is ready to run RPMS Resource Persi...

Page 87: ... SCAVEM SCAn VElocity Modulation User 1 User defined setting for height of a 16 9 picture setting User 2 User defined setting for the zoom and the scroll of a 16 9 picture setting Indicator An on screen object giving textual or graphical information on user commands or system events NVM Non Volatile Memory used to store user and service factory settings Program A broadcasted TV signal received via...

Page 88: ...the program information Last status A variable can be classified as last status setting Settings that are classified as last status are stored in NVM The following settings are part of the last status Program number Volume Audio Preset Video Preset Aspect ratio WSS Wide Screen Signalling Letterbox When a 14 9 or 16 9 format movie or picture on 4 3 transmission displayed on 4 3 set black bars on to...

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Summary of Contents for 28YT56

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Toshiba 28YT56, Service Manual

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Summary of Contents for 28YT56

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