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DVD5500

DVD PLAYER

SERVICE MANUAL

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Summary of Contents for DVD5500

Page 1: ...DVD5500 DVD PLAYER SERVICE MANUAL ...

Page 2: ...D Video VCD 1 1 2 0 and SVCD Unified track buffer and A V decoding buffer Direct interface of 32 bit SDRAM Servo controller and data channel processing Video Related Features Macrovision 7 1 for NTSC PAL interlaced video Simultaneous composite video and S video outputs or composite and YUV outputs or composite and RGB outputs 8 bit CCIR 601 YUV 4 2 2 output Decodes MPEG video and MPEG2 main profil...

Page 3: ...is based around an Futaba VFD and a common NEC front panel controller chip uPD16311 The MT1379 controls the uPD16311 using several control signals clock data chip select The infrared remote control signal is passed directly to the MT1379 for decoding 1 5 REAR PANEL A typical rear panel is included in the reference design This rear panel supports Six channel or two channel audio outputs Optical and...

Page 4: ...hRW2 1 or is digital output for TRWMEN27hRW2 0 PWMOUT1 2 Analog Output 15 16 1st and 2nd general PWM output DVDD2 Power 17 42 72 82 120 140 182 2 5V power pin for internally fully digital circuitry DMO Analog Output 18 Disk motor control output PWM output FMO Analog Output 19 Feed motor control PWM output FG Input 21 Motor Hall sensor input HIGHA0 5 Inout 2 16MA SR PU 22 27 Microcontroller address...

Page 5: ... PD SMT 149 Audio L R channel clock Trap value in power on reset 1 ext 0 int ACLK Inout 4MA 151 Audio DAC master clock 384 256 audio sample frequency MC_DATA Input 152 Microphone serial input SPDIF Output 2 16MA SR ON OFF 153 SPDIF output ASDATA0 Inout 4MA PD SMT 154 1 Audio serial data 0 L R 2 Trap value in power on reset 1 factory test mode 0 normal mode ASDATA1 Inout 4MA PD SMT 155 Audio serial...

Page 6: ...ect data input status ADCVSS Ground 199 Ground pin for ADC circuitry ADIN Analog Input 200 General A D input RFSUBI Analog Input 201 RF subtraction signal input terminal TEZISLV Analog Input 202 Tracking error zero crossing low pass input TEI Analog Input 203 Tracking error input CSO Analog Input 204 Central servo input FEI Analog Input 205 Focus error input RFLEVEL Analog Input 206 Sub beam add i...

Page 7: ...ransfer of video frames stored in memory to the internal TV encoder of the MT1379 The output section consists of a programmable CRT controller capable of operating either in Master or Slave mode The video output section features internal line buffers which allow the outgoing luminance and chrominance data to match the internal clock rates with external pixel clock rates easily facilitating YUV4 2 ...

Page 8: ... S interface supports the 112 128 192 256 384 and 512 sampling frequency formats where sampling frequency Fs is usually 32 kHz 44 1 kHz 48 kHz 96 kHz or 192 kHz The audio samples for the I 2 S transmit interface can be 16 18 20 24 and 32 bit samples For Linear PCM audio stream format the MT1379 supports 48 kHz and 96 kHz Dolby Digital audio only supports 48 kHz The MT1379 incorporates a built in p...

Page 9: ...shielded co ax cable become essential Scart Signals Audio signals 0 5V RMS 1K output impedance 10K input impedance Red Green Blue 0 7Vpp 2dB 75R input and output impedance Note that the Red connection pin 20 can alternatively carry the S Video Chrominance signal which is 0 3V Composite Video CSync 1Vpp including sync 2dB 75R input and output impedance Bandwidth 25Hz to 4 8MHz for normal TV Video d...

Page 10: ...y using diodes D1 D2 D3 and D4 Using capacitor C3 470µf a DC voltage is produced 310 320VDC The current in the primary side of the transformer TR3 comes to the SMPS IC IC3 TOP223Y The SMPS IC has a three pin TO 220 case and a cooler is mounted on it It has a built in oscillator overcurrent and overvoltage protection circuitry and runs at 100kHz It starts with the current from the primary side of t...

Page 11: ... JK3 and 1 laser digital audio output PL5 on the back panel TOTX176 is used for laser output For coaxial audio output SPDIF is used Q22 Q27 transistors are to mute the audio outputs while switching the state of the unit power on off There are two op amps in U14 U16 and U18 They are used for left right rear left and right subwoofer center audio channels The feedback resistor is amplifying the gain ...

Page 12: ...xample 02 01 EF65 5th line contains hardware option example A6AO bin 7th line contains Region Code Management Press DISPLAY button on remote control to exit hidden menu 5th line also shows CD update file name It defines also Hardware options 12 3 Build Names for Hardware Options DVD5500 MTK Concept has 3 different hardware option 1 2 OPU Option 2 2 VFD Option TV DVD 3 4 DAC Option This means there...

Page 13: ...OSD message 5 Press Play button to start upgrade 6 You can see File copying OSD message for a few second 7 Tray is open automatically 8 No need for CD in tray Take it from tray 9 During upgrade procedure CD upgrade start Please wait indicator at OSD and UPG indicator at VFD 10 Upgrade procedure takes about a few minutes please wait if tray is open 11 When CD update is finished tray is closed scree...

Page 14: ...14 13 CIRCUIT SCHEMATICS Appendix A ...

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