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Daewoo DTU-29M5ME, Service Manual, Page: 72 / 77

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Daewoo DTU-29M5ME Service Manual Download Page 72

-71-

TROUBLE SHOOTING CHARTS

4. NO PICTURE

CHECK
28,29 OF I701

CHANGE INPUT MODE
RF --> AV --> RF

CHECK SIGNAL OUT AT 
R,G,B OF I701

CHECK
189V Line Heater Voltage

CHECK/REPLACE
CRT

CHECK SIGNAL AT
R,G,B INPUT AND
R,G,B OUTPUT OF I901

CHECK/REPLACE
SCL, SDA, B+
OF TUNER

CHECK / REPLACE
I701

CHECK SIGNAL AT
IF OF TUNER

CHECK
AV Signal

CHECK
Connection of AV JACK

ABNORMAL

ABNORMAL

ABNORMAL

ABNORMAL

NORMAL

NORMAL

NORMAL

NORMAL

NORMAL

ABNORMAL

Summary of Contents for DTU-29M5ME

Page 1: ...L Parts Price List in Service Information Center Service Manual Color Television CHASSIS Model CM 500 500F DTU 29M5ME MP MT MZ DTU 29M6ME MP MT MZ DTU 29M7ME MP MT MZ DTU 29U1ME MP MT MZ DTU 29U5ME MP...

Page 2: ...TYPICAL SERVICE DATA 15 6 ELECTRICAL PARTS LIST 16 7 EACH MODEL PARTS LIST 24 8 SCHEMATIC DIAGRAM 25 9 PRINTED CIRCUIT BOARD 26 10 MECHANICAL EXPLODED VIEW AND PARTS LIST 29 11 IC DESCRIPTION 38 12 T...

Page 3: ...W FLAT 7 5W 7 5W at EQUILIZER CENTER Channel Conerage VHF BAND I CH 02 CH04 48 25MHz 62 25MHz BAND II CH05 CH12 175 25MHz 224 25MHz CABLE BAND S01 S03 69 25MHz 83 25MHz S01 S20 105 25MHz 294 25MHz HYP...

Page 4: ...e the picture tube to avoid the shock harzard before removing the anode cap 3 Discharge the high potential of the picture tube before handling the tube The picture tube is highly evacuated and if brok...

Page 5: ...4 3 CIRCUIT BLOCK DIAGRAM...

Page 6: ...Gunpo RND V1 01 25 11 04 Tuner option revision Byte1 bite2 1 0 V1 02 29 11 04 Curtain beep option added Byte3 bits1 Curtain ON OFF bit setting corrected V1 03 02 12 04 Local key option bit changed Dig...

Page 7: ...ervice e g SERVICE V1 00 To exit SERVICE menu press menu key or Stand By key 4 2 SERVICE MODE NAVIGATION Pr Up Down remote keys cycle through the service items available Vol remote keys Dec Increment...

Page 8: ...are two option bytes available 16 bits in all These option bits are available from FACTORY and SERVICE mode First find the OPTION1 OPTION2 or OPTION3 control and then use the UP DOWN and PLUS MINUS k...

Page 9: ...EXTING OPTION BITS MENU Push the button OPT a third time The full sequence enter to exit is FACTORY OPTION1 OPTION2 OPTION3 FACTORY 4 4 6 AFTER SETTING OPTION BITS Before pushing on the shipping key B...

Page 10: ...zoom selection in features menu WSS is also disabled Dolby Virtual Bit 3 Allows Doby Virtual trademark 3D effect to be available from the user control button 3D Note Dolby Virtual is only available w...

Page 11: ...icture setting according to the table below PARS Logo ON OFF Bit 0 Enables disables the display of PARS logo at power on 4 5 3 OPTION 3 BITS Curtain function at power ON Bit 7 Enables disables the cur...

Page 12: ...tin German East 1 0 0 Cyrillic Latin Russia East 1 0 1 Cyrillic Latin Ukrainian East 1 1 0 Latin Latin Czech Slovak East 1 1 1 Latin Latin Rumanian East Arabic 0 0 0 Latin Latin English West Persian 0...

Page 13: ...djust RED GRN and BLUE GAIN to the desired colour temperature 3 FOCUS Adjust the Focus volume on FBT to have the best resolution on screen 4 VERTICAL GEOMETRY Adjust V LINEAR linearity S CORRECT S Cor...

Page 14: ...itted on the chassis See above how to change option bits Adjust the antenna signal level at 62 dB V 2 Tune a colour bar pattern Find the AGC LEVEL item in service mode Press the key OK on the remote k...

Page 15: ...URSOR RIGHT PROGRAM DOWN CURSOR DOWN MODE OK PRESET PIP ON PIP PICTURE SWAP PIP POSITION PIP PICTURE SOURCE TV TELETEXT PIP PICTURE SIZE SLEEP ZOOM 3D SOUND EFFECT TELETEXT MODE POWER SOUND MUTE NUMBE...

Page 16: ...15 5 CM 500 F TYPICAL SERVICE DATA...

Page 17: ...TDA8358J 0000A 4857028227 HEAT SINK AL EX BK 0000B 7174301011 SCREW TAPPTITE TT2 RND 3X10 MFZN LOC PARTCODE PARTNAME DESCRIPTION REMARK I601 PTA2SW8232 HEAT SINK ASS Y 1LA42152 E 7174301011 11LA42152...

Page 18: ...LL R406 RS02Z203JS R M OXIDE FILM 2W 20K OHM J SMALL R407 RS02Z102JS R M OXIDE FILM 2W 1K OHM J SMALL R408 RF01Z100J R FUSIBLE 1W 10 OHM J TAPPING R409 RS01Z103J R M OXIDE FILM 1W 10K OHM J TAPPING R4...

Page 19: ...M14006LB TAPE MASKING 3M 232 6 0X2000M LOC PARTCODE PARTNAME DESCRIPTION REMARK 20 2TM10006LB TAPE MASKING 3M 232 MAP C 6 2X2000M A001 4859810993 PCB MAIN 330X246 D1B C101 CCZB1H102K C CERA 50V B 1000...

Page 20: ...20 RD AZ102J R CARBON FILM 1 6 1K OHM J J321 85801060GY WIRE COPPER 1 0 6 TIN COATING J405 85801060GY WIRE COPPER 1 0 6 TIN COATING J406 85801060GY WIRE COPPER 1 0 6 TIN COATING J407 85801060GY WIRE C...

Page 21: ...ING J854 85801060GY WIRE COPPER 1 0 6 TIN COATING LOC PARTCODE PARTNAME DESCRIPTION REMARK J857 85801060GY WIRE COPPER 1 0 6 TIN COATING J879 85801060GY WIRE COPPER 1 0 6 TIN COATING J888 85801060GY W...

Page 22: ...ARBON FILM 1 6 10K OHM J R739 85801060GY WIRE COPPER 1 0 6 TIN COATING LOC PARTCODE PARTNAME DESCRIPTION REMARK R740 85801060GY WIRE COPPER 1 0 6 TIN COATING R741 RD AZ101J R CARBON FILM 1 6 100 OHM J...

Page 23: ...02 COIL PEAKING 10UH K AXIAL 3 5MM LP04 5CPZ100K02 COIL PEAKING 10UH K AXIAL 3 5MM LP05 5CPZ100K02 COIL PEAKING 10UH K AXIAL 3 5MM LOC PARTCODE PARTNAME DESCRIPTION REMARK LP06 5CPZ100K02 COIL PEAKING...

Page 24: ...05 RD AZ101J R CARBON FILM 1 6 100 OHM J R906 RD AZ101J R CARBON FILM 1 6 100 OHM J R907 RD AZ101J R CARBON FILM 1 6 100 OHM J R908 RC 2Z102K R CARBON COMP 1 2 1K OHM K R909 RC 2Z102K R CARBON COMP 1...

Page 25: ...CVSNDF SV Q O C811 C CERA AC 4 0KV 2200PF M AD AC250V 4 0KV 3300PF M SD AC250V C831 C MYLAR N C 630V PU 0 047MF J D820 DIODE N C RL4A 015 308 D821 DIODE N C RL4A 015 308 J803 J804 WIRE COPPER 1 0 6 TI...

Page 26: ...25...

Page 27: ...26...

Page 28: ...27...

Page 29: ...28...

Page 30: ...29 DTU 29M5...

Page 31: ...30 DTU 29M6...

Page 32: ...31 DTU 29M7...

Page 33: ...32 DTU 29U1...

Page 34: ...RUBBER SCREW CRT FIX 4 4 CR T2 0 SWRM SK5 L 35 4852163101 COVER BACK 1 1 HIPS GY 4851114003 SIDE AV PCB PANEL AV ASSY 1 1 CM 500F CM 500F 2326802 5934301 7178301212 SCREW TAPTITE 2 TT2 WAS 3X12 MFZN...

Page 35: ...34 CM 500F 4858311110 DTU 29U8 4859645360 12W 8 SP 58126F DTU 29U8...

Page 36: ...35 DTU 29F1 CM 500F 4859845360 CPT A68AKY13X CM 500F CM 500F DTU 29F1...

Page 37: ...36 DTU 29F2 CM 500F 4859845360 CPT A68AKY13X CM 500F DTU 29F2...

Page 38: ...37 DTU 29F3 CM 500F 4859845360 CPT A68AKY13X CM 500F CM 500F DTU 29F3...

Page 39: ...together with a FLASH embedded TEXT Control Graphics m Controller TCG m Controller and US Closed Caption decoder In addition the following functions can be added Teletext decoder with 10 page text me...

Page 40: ...39 IC DESCRIPTION...

Page 41: ...0 port 2 1 or PWM0 output 12 P3 0 ADC0 port 3 0 or ADC0 input 13 P3 1 ADC1 port 3 1 or ADC1 input 14 P3 2 ADC2 port 3 2 or ADC2 input 15 P3 3 ADC3 port 3 3 or ADC3 input 16 VDDA 3 3V supply 3 3V 17 VR...

Page 42: ...ssor 5V 46 IFVO SVO CVBSI 2 IF video output selected CVBS output CVBS input 47 AUDIOIN4L audio 4 input left signal 48 AUDIOIN4R audio 4 input right signal 49 CVBS4 Y4 CVBS4 Y4 input 50 AUDIOIN2L audio...

Page 43: ...West drive output or AVL capacitor 76 VDRA vertical drive A output 77 VDRB vertical drive B output 78 VGUARD SWIO V guard input I O switch e g 4mA current sinkingcapability for direct drive of LEDs 7...

Page 44: ...ecoder 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 signa...

Page 45: ...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...

Page 46: ...l Dolby Surround VDS 422 423 SRS 3D and SRS TruSurround RDS RBDS Only possible with external FM RADIO DEMOD Demodulation of the European Radio Data system RDS or the USA Radio Broadcast Data System RB...

Page 47: ...ical 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 sc...

Page 48: ...tion circuis Portection from shorting to ground shorting to Vcc load shorting and overheating 2 2 BLOCK DIAGRAM 5 2 12 OUT1 IN1 Input amplifier Input amplifier Output amplifier Output amplifier Ri 20k...

Page 49: ...h 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 b...

Page 50: ...cal output voltage B 5 INEW East west input voltage 6 VGND Vertical ground 7 EWGND East west ground 8 OUTEW East west output voltage 9 VFB Flyback supply voltage 10 OUTA Vertical output voltage A 11 G...

Page 51: ...slew rate of 900V ms 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...

Page 52: ...at 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...

Page 53: ...ators and control IC designed for flyback converter type switch mode power supply applications 6 2 FEATURES Small SIP fully isolated moulded 6 pins package Many protection functions Pulse by pulse ove...

Page 54: ...ply for control circiut 5 SS OLP Delay at Overload Soft Overload Protection and Soft Start set up Terminal Opetation Time set up 6 FB Feedback terminal Constant Voltage Control Signal Input Burst inte...

Page 55: ...oltage1 7 3 VOCPBD TH1 0 25 0 40 0 52 V Quasi Resonant Operation Threshold Voltage2 7 3 VOCPBD TH2 0 67 0 80 0 93 V FB Terminal Threshold Voltage 6 3 VFB OFF 1 32 1 45 1 58 V FB Terminal Inflow Curren...

Page 56: ...ier 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 supplied to the output via a...

Page 57: ...ade 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 volume controlled audio outputs is realised by the HPO2 0 bit...

Page 58: ...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...

Page 59: ...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...

Page 60: ...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 7 9 Colour decoder The ICs decode PAL N...

Page 61: ...icture The black level control is active on the Red and the Green output signal It is also possible to control the black level of the Blue and the Green output signal OFB bit 1 In the Vg2 adjustment m...

Page 62: ...h an additional output crossbar Master volume function The control concept for the demodulator and decoder DEMDEC is based on the following new features Easy demodulator setup for all implemented stan...

Page 63: ...MSWITHNICAM Table NICAM standards Note 1 See EBU specification or equivalent specification 9 FUNCTIONAL DESCRIPTION SOUND PROCESSOR 9 1 The UOC III TV Sound Concept The UOCIII sound concept is impleme...

Page 64: ...o signal out of the AM demodulator is connected to the analogue crossbar at the video processor All other inputs to this multiplexer audio switch come from external either from a PIP frontend or SCART...

Page 65: ...Logic processing In standard TV applications the main channel signal L R will be connected to the DAC2 for reproduction at the speakers With multichannel signals centre surround or subwoofer channels...

Page 66: ...rier For NICAM demodulation a feedback signal is added to the control word of the second carrier mixer to establish a carrier frequency loop FM AND AM DEMODULATION An FM or AM input signal is fed via...

Page 67: ...728 specification After locking to the frame alignment word the data is de scrambled by applying the defined pseudo random binary sequence the NICAM decoder will then synchronize to the periodic fram...

Page 68: ...ill switch the output sound from NICAM to what ever sound is on the first sound carrier FM or AM When the error count is smaller thanthe lower error limit the NICAM sound is restored The auto mute fun...

Page 69: ...HECK REPLACE D802 D805 R803 CHECK REPLACE I802 LTV 817C CHECK VOLTAGE AT PIN I701 CHECK VOLTAGE AT PIN 21 OF I701 ST BY L POWER ON H ABNORMAL ABNORMAL NORMAL NORMAL NORMAL CHECK Horizontal AT PIN 73 O...

Page 70: ...80 OF I701 CHECK REPLACE Q502 Q503 Q504 Q505 CHECK SIGNAL AT CATHODE OF CRT CHECK REPLACE CRT BOARD CHANGE SIGNAL IF OF TUNER CHECK SIGNAL AT PIN 72 76 77 OF I701 CHECK REPLACE SCL SDA B OF I701 CHEC...

Page 71: ...HARTS CHECK SIGNAL AT 28 29 PIN OF I701 CHANGE THE SYSTEM PAL SECAM CHECK REPLACE IF OF TUNER CHECK REPLACE Z701 Z702 CHECK R G B SIGNAL 83 84 85TH OF I701 CHECK REPLACE CRT PART NORMAL NORMAL ABNORMA...

Page 72: ...OF I701 CHECK 189V Line Heater Voltage CHECK REPLACE CRT CHECK SIGNAL AT R G B INPUT AND R G B OUTPUT OF I901 CHECK REPLACE SCL SDA B OF TUNER CHECK REPLACE I701 CHECK SIGNAL AT IF OF TUNER CHECK AV S...

Page 73: ...701 CHECK REPLACE I701 CHECK REPLACE R313 R314 C313 C314 R305 R312 C305 C306 CHECK VERTICAL INPUT Vin OF I301 NORMAL NORMAL NORMAL NORMAL NORMAL ABNORMAL ABNORMAL ABNORMAL ABNORMAL CHECK VERTICAL OUTP...

Page 74: ...2 4 OF I601 CHECK SIGNAL AT PIN 57 58 I701 NORMAL NORMAL NORMAL NORMAL NORMAL ABNORMAL ABNORMAL ABNORMAL ABNORMAL CHECK SIF OUT OF I701 CHECK Speaker Connector Replade I601 CHECK REPLACE R602 R604 R6...

Page 75: ...AV2 DVD1 DVD2 CHECK SIGNAL AT PIN 49 52 55 68 69 70 OF I701 CHECK SIGNAL AT PIN R G B 83 84 85 OF I701 ABNORMAL ABNORMAL ABNORMAL NORMAL NORMAL NORMAL CHECK SIGNAL AT R G B Input and R G B Ouput of I9...

Page 76: ...G CHARTS 8 REMOTE CONTROL UNIT TROUBLE CHECK BATTERY AND LED OF REMOCON CHECK IR OF PREAMP AND VCC OF PREAMP IC IF01 CHECK REPLACE 2 nd PIN OF I701 ABNORMAL ABNORMAL NORMAL NORMAL REPLACE BATTERY REPL...

Page 77: ...DAEWOO ELECTRONICS CORP PRINTED DATE 686 AHYEON DONG MAPO GU SEOUL KOREA C P O BOX 8003 SEOUL KOREA JULY 2005...

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