Daewoo DDT-21H9ZZF Service Manual Download Page 51

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Service Manual CP-099F

T801

SMPS

Low Q802

High

R827

R828

Y801

INPUT

R555

ST-BY

5 V

Q503

R557

I501

ST-BY

5 V

Low

If the TV set was on normal run mode before switching off, the microcontroller delivers horizontal drive
voltage at pin 24 picture appears on screen.

If the TV set was on stand-by mode before switching off, the microcontroller switches TV set to stand-
by mode, decreasing power pin voltage (pin5)

5-10-2 TV normal run and stand-by mode operations

Depending on remote cnotrol commands, I501 microcontroller part pin 5 (power) is set to :

- low for normal run mode.
- high for stand-by mode.
a) TV on normal run mode

* I501 microcontroller part pin 5 (power) effect
I501 microcontroller part pin 5 (power) is connected to the following circuit :

Fig : I501 microcontroller part pin 5 (POWER) effect

Summary of Contents for DDT-21H9ZZF

Page 1: ...Service Manual TV DVD Combination CHASSIS CP 099F Model DDT 21H9ZZF DDT 21H9ZZR S M No TCP099FEF0 May 2002 DAEWOO ELECTRONICS CO LTD http svc dwe co kr DDT 21H9ZZF DDT 21H9ZZR...

Page 2: ...ustment of pincusion 13 3 5 7 1 The adjustment of parabola 13 3 5 7 2 The adjustment of corner 13 3 5 7 3 The adjustment of H parabola 13 3 5 7 4 The adjustment of H bow 14 3 5 7 5 The adjustment of E...

Page 3: ...5 2 3 VIF AGC detector 36 5 2 4 Frequency phase Locked Loop FPLL detector 36 5 2 5 VCO and divider 36 5 2 6 Digital acquisition help and AFC 37 5 2 7 Video demodulator and amplifier 37 5 2 8 Sound ca...

Page 4: ...scrimination 44 5 6 4 NICAM decoder 44 5 6 5 DSP section 44 5 6 6 Sound Mode switching 44 5 7 Sound amplification 45 5 7 1 Power amplifier 45 5 7 2 Mode selection 45 5 8 Vertical deflection 45 5 8 1 F...

Page 5: ...en 51 Cm Channel indication On Screen Display Porgram Selection 100 programs 00 99 EURO SCART AV1 Auto Video In and Out R G B In Slow and Fast switching Aux terminal AUDIO OUT DVD COAXIAL OUT and RCA...

Page 6: ...een In NC Red Earth NC Red In Rapid Blanking Switching Video Earth Rapid Blanking Earth Video Out Video In Common Earth 0 5Vrms lmp 1k RF 60 MOD 0 5Vrms lmp 10k 0 5Vrms lmp 1k RF 60 MOD 0 5Vrms lmp 10...

Page 7: ...C28 527 25 527 25 527 25 527 25 C29 535 25 535 25 535 25 535 25 C30 543 25 543 25 543 25 543 25 C31 551 25 551 25 551 25 551 25 C32 559 25 559 25 559 25 559 25 C33 567 25 567 25 567 25 567 25 C34 575...

Page 8: ...09 S10 S11 S12 S13 S14 S15 S16 S17 S18 S19 S20 S21 S22 S23 S24 S25 S26 S27 S28 S29 S30 S31 S32 S33 S34 S35 S36 S37 S38 S39 S40 S41 161 25 168 25 231 25 238 25 245 25 252 25 259 25 266 25 273 25 280 25...

Page 9: ...more programs with the same code are found only the strongest or if they have the same level the one with the lowest frequency is listed in group I II or III The others are listed in group IV Program...

Page 10: ...list SAFETY PRECAUTION 1 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 fro...

Page 11: ...ER OFF V SLOPE H WIDTH V CENTER H CENTER V SIZE PARABOLA DVD ON OFF SVC OFF 4 3 16 9 NORMAL MODE SERVICE MODE NAME AFTER SVC MODE POWER STAND BY POWER ON PR UP PR UP PR DOWN PR DOWN VOL UP REGION SELE...

Page 12: ...ODE and push DVD ON SVC OFF Then insert the UPGRADE CD Upgrde is doing automatically For a while push the power switch off after screen is twinkled Then switch on upgrde is done perfectly 3 4 1 The ad...

Page 13: ...nt of vertical slope Apply PAL RETMA pattern Go to SERVICE MODE Press V SLOPE or V SLOPE key and V LINEAR OSD will be displayed Referring to the upper side and lower side adjust with V SLOPE V SLOPE k...

Page 14: ...duction in the factory keeping the default value is recommended for the adjustment of CORNER Default Value 00022 3 5 6 The adjustment of horizontal width Adjust Horizontal width only CRT of non pin pr...

Page 15: ...W or H BOW key In case of mass production in the factory keeping the default value is recommended for the adjustment of H bow Ddfault value 00000 3 5 7 5 The adjustment of EW TRAPEZIUM Apply PAL CROSS...

Page 16: ...ator 16 kB Text RAM 3 kB OSD RAM TPU DMA CPU 1 kB Reset Audio Video Back end Pict Improv Display Processor Panorama Scaler Color Decoder Video Front end Comb Filter Logic Clock Oscillator CPU RAM 96 k...

Page 17: ...16 Service Manual CP 099F...

Page 18: ...anking Signal CVBS and from this extracts the required data which is then decoded and stored in memory The extraction of the data is performed in the digital domain The first stage is to select and co...

Page 19: ...gian Swedish Greek Polish Hungarian Romanian Russian 4 1 11 IC marking and version Chassis OSD languages ATSS countries Text CP 099F VCT3834 Pan European Latin Cyrillic Greek GB France Germany Italy B...

Page 20: ...OUTPUT 35 VERT OUT DIFFERENTIAL VERTICAL SAWTOOTH OUTPUT 36 EW OUT VERTICAL PARABOLA OUTPUT 37 SENSE IN SENSE ADC INPUT 38 GND SUPPLY 39 RSW1 OUT RANGE SWITCH1 FOR MESUREMENT ADC 40 RSW2 OUT RANGE SW...

Page 21: ...5 16 6 VCT 383X KEY1 KEY2 ST BY 5V GND PWR L SB LED OCP IR INPUT MUTE L SLOW SW V OUT VRT S GND GND B 5V Cb IN C1 IN C2 Cr IN IF V IN SCART V IN RCA V IN DVD Y IN TEST H OUT B 3 3V GND FBL IN R IN G I...

Page 22: ...Improved AM demodulation Reduction of necessary controlling Less external components 4 2 1 Basic Features of the MSP 341x 4 2 1 1 Demodulator and NICAM Decoder Section The MSP 341x is designed to simu...

Page 23: ...ian Spanish and French TV standards high quality stereo sound is transmitted digitally The systems allow two high quality digital sound channels to be added to the already existing FM AM channel The s...

Page 24: ...F 1 Sound IF 2 I2S1 I2S I2S2 SCART 1 Loudspeaker Headphone Subwoofer SCART 1 SCART 2 SCART 2 SCART 3 SCART 4 MONO Pin connections and short description Pin No Pin Name Type Short description 1 AUDIO C...

Page 25: ...VREF1 36 SC1 R OUT OUT SCART AUDIO R OUT 37 SC1 L OUT OUT SCART AUDIO L OUT 38 VOL CAP A 39 Avcc 8v 40 VOL CAP M 41 AHVss 42 AREF 43 SC4 L IN IN 44 SC4 R IN IN 45 ASGND4 46 SC3 L IN IN AV2 AUDIO L IN...

Page 26: ...AFC detector with 4 bit digital to analog converter AFC bits via I2C bus readable TakeOver Point TOP adjustable via I2C bus or alternatively with potentiometer Fully integrated sound carrier trap for...

Page 27: ...TOP TAGC VIF PLL filter external reference crystal or AGC neg C BL VAGC pos 1 C C VAGC VPLL REF AFC 4MHz 14 16 19 22 11 10 7 12 C AF de emphasis network CVBS 17 8 5 6 SUPPLY SINGLE REFERENCE QSS MIXER...

Page 28: ...tive input2 4 4 TDA894xJ Stereo AudioAmplif ier The TDA8944J is a dual channel audio power amplifier with an output power of 2 x 5W at an 8 load and a 12V supply The circuit contains two Bridges Tied...

Page 29: ...CP 099F Block diagram TDA8944J VCC1 IN1 8 6 3 16 OUT1 4 17 9 20 k VCC 12 10 11 2 GND1 GND2 MBK933 14 1 OUT1 OUT2 OUT2 SHORT CIRCUIT AND TEMPERATURE PROTECTION STANDBY MUTE LOGIC TDA8944J IN1 IN2 IN2...

Page 30: ...bsence of second breakdown 4 5 1 TDA8358J An East West output stage is provided that is able to sink current from the diode modulator circuit Features Few external components Highly efficient fully DC...

Page 31: ...12 11 10 9 8 7 6 5 4 3 2 1 Tab connected to Pin 8 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Blue Input Vcc Green Input Red Input Vpp Red Cathode Current Red Output Ground Red Feedback Green Output Green Cat...

Page 32: ...31 Service Manual CP 099F BLOCK DIAGRAM OF EACH CHANNEL 2 1 8 GND 3 4 35 35 1k 0 8k 20k 12 9 11 6 10 7 15 14 13 40k 5 Vpp REFERENCE VOLTAGE 350...

Page 33: ...ire serial interface that uses a bi directionnal 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...

Page 34: ...O C P F B Input of over current detection signal and feedback signal 2 Source S MOSFET source 3 Drain D MOSFET drain 4 Supply VIN Input of power supply for control circuit 5 Ground GND Ground 4 START...

Page 35: ...0 78 V threshold voltage 1 O C P F B terminal 1 5 VTH 2 1 3 1 45 1 6 V threshold voltage 2 O C P F B terminal extraction 1 2 IOCP FB 1 2 1 35 1 5 mA current O V P operation voltage 4 5 VIN OVP 20 5 2...

Page 36: ...Service Manual CP 099F 35 5 Circuit desription 5 1 Block diagram...

Page 37: ...ge time constant for VIF gain increase in needed caused by the fact the peak whith level may appear only once in a field In order to reduce this time constant an additional level detector increases th...

Page 38: ...at pin 17 is 2 V p p In case of bypass mode the preamplifiers output signal is fed direct through the post amplifier to pin 17 The output video level is 1 1 V p p for using an external sound trap with...

Page 39: ...To achieve good selectivity a linear phase detector and constant input level are required The gain controlled intercarrier signal from the FM amplifer is fed to the phase Detector PD The PD controls v...

Page 40: ...I 2 C bus slave interface 5 3 2 Video Front end This block provides the analogue interfaces to all video inputs and mainly carries out analogue to digital conversion for the following digital video p...

Page 41: ...s of horizontal and vertical locking thus allowing a completely independent search of the line and colour standard of the input signal The following standards can be distinguished PAL B G H I NTSC M S...

Page 42: ...use the small bandwidth setting 5 3 15 CRT Measurement and Control The display processor is equipped with an 8 bit ADC for all measuring purposes The ADC is connected to the SENSE input pin Cutoff and...

Page 43: ...o more than 64 kB memory a bootloader software is included to allow in system downloading of external code to Flash memory via the I 2 C interface The TV controller runs the complete software necessar...

Page 44: ...nd Greek languages a major character set change a change of character mapping needs to effected for correct display These codes represent for a given broadcaster the intended language that the teletex...

Page 45: ...A D converter whose output is used to control an analogue automa tic gain circuit AGC providing an optimal level for a wide range of input levels 5 6 2 Quadrature Mixers The digital input coming from...

Page 46: ...orced or Autodetect is stored for each programme 5 7 2 Mode selection The TDA894xJ has several functional modes which can be selected by applying the proper DC voltage to pin MODE Mute In this mode th...

Page 47: ...trol IC designed for flyback converter type switch mode power supply applications 5 9 2 Power supply primary part operations An oscillator generates pulses signals which turn on and off a MOSFET trans...

Page 48: ...e before VIN voltage drops to the shutdown voltage at 11V the control circuit continues operating see below VIN voltage at start up R809 resistor prevents that VIN pin voltage varies according to the...

Page 49: ...ed by C1 and R1 is the OFF time of the MOSFET When C1 voltage falls to around 3 7V the STR F6654 internal oscillator is reversed again and the MOSFET turns ON C1 is quickly charged to around 6 5V The...

Page 50: ...iagram for start up operations TV start up and microcontroller initialization When AC POWER is on rectified voltage is applied to transformer T802 That voltage is rectified by D801 D802 D803 and D804...

Page 51: ...and by mode before switching off the microcontroller switches TV set to stand by mode decreasing power pin voltage pin5 5 10 2 TV normal run and stand by mode operations Depending on remote cnotrol co...

Page 52: ...143 V 12 V 8 V 2 5 V 3 3 V 5 3 V 5 V Sound B H drive Trans 18 T801 SMPS Trans former T802 16 15 13 12 10 I811 I810 I806 I805 I807 I808 POWER SUPPLY Voltage during TV set normal run FBT VOLTAGE VIDEO...

Page 53: ...02 EEPROM T801 ST BY TRANS SW01 ON IQ01 Remocon IR DQ01 DQ02 LED Keymatrix AC INPUT I503 Q516 I501 microcontroller 8 25 3 3 V 5 V 2 11 5 4 I802 5 I804 Photo Coupler 1 4 45 15 3 54 5 V 5 V 3 3 V Fig Po...

Page 54: ...11 4 Sled 4Screws 1 2 6 8 GearAssmbly 1Connector Feed 1LockingTabs 1 2 6 8 9 GearMiddle 1 2 6 10 GearAssembly 1Screw 8 9 Rack 1 2 7 11 RubberRear 1 2 7 12 FrameAssembly 1Screw Bottom 1 2 13 BeltLoadin...

Page 55: ...Assembly Disc 1 Place the Clamp Assembly Disc as Fig A 2 Lift up the Clamp Assembly Disc in direction of arrow A 3 Separate the Clamp Assembly Disc from the Holder Clamp 1 1 1 Plate Clamp 1 Turn the...

Page 56: ...2 in direction of arrow 3 2 Gear Middle 3 3 Gear Assembly Rack 1 Release the Scerw S3 4 Rubber Rear Fig 5 11 3 GEAR MIDDLE MOTOR ASSEMBLY SPINDLE MOTOR ASSEMBLY SPINDLE PICK UP ASSEMBLY GENERAL RUBBER...

Page 57: ...oading Fig 5 11 4 9 Guide Up Down Fig 5 11 4 1 Move the Guide Up Down in direction of arrow A as Fig A 2 Push the Locking Tab L5 down and then lift up the Guide Up Down to separate it from the Base Ma...

Page 58: ...r to Audio part Refer to MPEG part Replace B D AUDIO ABNORMAL 5 11 2 ELECTRICAL TROUBLESHOOTING GUIDE A Open Close abnormal B Video abnoraml Check the connection of P5101 Check IC501 Pins 13 14 YES NO...

Page 59: ...noraml C Disc Error Check the disc If OK YES If OK YES If OK Refer to Servo part Check PLLIC of MPEG part Check DSP Check MPEG YES If OK Replace B D PICTURE ABNORMAL Check Disc YES If OK YES If OK Ref...

Page 60: ...Service Manual CP 099F 59 5 11 3 SCHEMATIC DIAGRAM 5 11 3 1 AUDIO...

Page 61: ...Service Manual CP 099F 60 5 11 3 2 DRIVE RF...

Page 62: ...Service Manual CP 099F 61 5 11 3 3 DSP...

Page 63: ...Service Manual CP 099F 62 5 11 3 4 MICOM...

Page 64: ...Service Manual CP 099F 63 5 11 3 5 MPEG...

Page 65: ...C MEMORY CAT24WC16P I503 1LP295033 IC REGULATOR LP2950 3 3V I504 1K1A7025AP IC RESET KIA7025AP I601 1MSP3410V3 IC SOUND MSP3410G V3 LOC PARTS CODE PARTS NAME DESCRIPTION REMARK I602 PTC2SW4422 HEAT SI...

Page 66: ...11 TP C618 CBXF1H104Z C CERA SEMI 50V F 0 1MF Z TAPPING C619 CEXF1H339V C ELECTRO 50V RSS 3 3MF 5X11 TP C620 CEXF1H100V C ELECTRO 50V RSS 10MF 5X11 TP C621 CEXF1H100V C ELECTRO 50V RSS 10MF 5X11 TP C6...

Page 67: ...1K C CERA 50V B 100PF K AXIAL C644 CCZB1H101K C CERA 50V B 100PF K AXIAL LOC PARTS CODE PARTS NAME DESCRIPTION REMARK CA01 CBZR1C152M C CERA 16V Y5R 1500PF M AXIAL CA02 CBZR1C152M C CERA 16V Y5R 1500P...

Page 68: ...COATING J071 85801065GY WIRE COPPER AWG22 1 0 65 TIN COATING J072 85801065GY WIRE COPPER AWG22 1 0 65 TIN COATING LOC PARTS CODE PARTS NAME DESCRIPTION REMARK J073 85801065GY WIRE COPPER AWG22 1 0 65...

Page 69: ...ILM 1 6 22K OHM J R109 RD AZ331J R CARBON FILM 1 6 330 OHM J R110 RD AZ331J R CARBON FILM 1 6 330 OHM J R111 RD AZ123J R CARBON FILM 1 6 12K OHM J R112 RD AZ104J R CARBON FILM 1 6 100K OHM J R113 RD A...

Page 70: ...1 6 11K OHM J RA12 RD AZ680J R CARBON FILM 1 6 68 OHM J RA13 RD AZ750J R CARBON FILM 1 6 75 OHM J RA14 RD AZ750J R CARBON FILM 1 6 75 OHM J LOC PARTS CODE PARTS NAME DESCRIPTION REMARK RA15 RD AZ101J...

Page 71: ...9J R M OXIDE FILM 1W 3 9 OHM J SCT01 4859304130 SOCKET CRT ISHG93S T401 50D10A2 TRANS DRIVE TD 10A2 T402 50H0000235 FBT 1352 5060 LOC PARTS CODE PARTS NAME DESCRIPTION REMARK T801 50M4445B1 TRANS SMPS...

Page 72: ...73JS R METAL FILM 2W 47K OHM J SMALL R406 RN02B222JS R METAL FILM 2W 2 2K OHM J SMALL R409 RN02B222JS R METAL FILM 2W 2 2K OHM J SMALL R410 RN02B103JS R METAL FILM 2W 10K OHM J SMALL R411 RN02B479JS R...

Page 73: ...85801065GY WIRE COPPER AWG22 1 0 65 TIN COATING J035 85801065GY WIRE COPPER AWG22 1 0 65 TIN COATING LOC PARTS CODE PARTS NAME DESCRIPTION REMARK J036 85801065GY WIRE COPPER AWG22 1 0 65 TIN COATING J...

Page 74: ...CARBON FILM 1 6 430 OHM J R914 RD AZ431J R CARBON FILM 1 6 430 OHM J R915 RD AZ431J R CARBON FILM 1 6 430 OHM J R916 RD AZ272J R CARBON FILM 1 6 2 7K OHM J R917 RD AZ272J R CARBON FILM 1 6 2 7K OHM J...

Page 75: ...301011 SCREW TAPPTITE 4 TT2 WAS 3X10 MFZN 4 6 8 4855800018 BADGE DVD 1 Ni Cr 13 12 TT2 WAS 3X10 MFZN 2 SCREW TAPPTITE 7178301011 ABS GY 1 PANEL AV 4852328701 30 SCREW TAPPTITE 7178301011 2 TT2 WAS 3X1...

Page 76: ...X10 MFZN SP 50110F03 TT2 TRS 4X12 MFZN BK ABS GY HIPS GY PMMA MILKY SWPA PIE0 5 TT2 WAS 3X10 MFZN 1 4 2 1 5 8 2 2 1 1 1 4 BRACKET EARTH HEAT SINK HEAT SINK POWER PCB FRAME POWER HEAT SINK SHIELD CASE...

Page 77: ...Service Manual CP 099F 76 9 PRINTED CIRCUIT BOARD 9 1 DVD PCB The upper...

Page 78: ...Service Manual CP 099F 9 2 DVD PCB The lower 77...

Page 79: ...Service Manual CP 099F 9 3 POWER PCB 78...

Page 80: ...Service Manual CP 099F 9 4 MAIN PCB 79...

Page 81: ...80 Service Manual CP 099F 10 SCHEMATIC DIAGRAM 10 1 POWER CRT...

Page 82: ...81 Service Manual CP 099F 10 SCHEMATIC DIAGRAM 10 2 PCB MAIN...

Page 83: ...686 AHYEON DONG MAPO GU SEOUL KOREA C P O BOX 8003 SEOUL KOREA TELEX DWELEC K28177 8 CABLE DAEWOOELEC E mail djkoo web dwe co kr...

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