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Haier ULT-15M Service Manual
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Haier ULT-15M Service Manual

Haier ULT-15M Service Manual

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ULT-15M

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Summary of Contents for Haier ULT-15M

  • Page 1 ULT-15M...
  • Page 2 1. Features 2. Safety Precautions 3. Images of Module and Circuit Boards 4. Key IC Description& Trouble Shooting Guide 5. Signal Flowing Chart 6. Bus Control Adjustment 7. Circuit Diagram...
  • Page 3 Features Model Functions ULT-15M Screen size 15inch Aspect ratio Resolution 1024×768 Brightness 250cd/m Contrast(Darkroom) 400:1 Response time(ms) Color system PAL/SECAM NO. of preset channels Picture mode Angel of view H:120 / V:100 Color display 16,777,216 Color level OSD languages optional...
  • Page 4 Model Functions ULT-15M D-SUB jack DVI socket SCART socket Ear-Phone Out TELETEXT Semitransparent menu ZOOM 16:9 mode Child Lock Quick View NO. of built-in speakers Audio output power(Built-in)(W) 2*1.5 Total power input W Voltage range V 150-240 Power frequency Hz...
  • Page 5 Safety Precautions Warning High voltages are used in the operation of this product. Do not romove the cabinet back from your set. Refer servicing to qualified service personnel. Warning To prevent fire or electrical shock hazard, Do not expose the main unit to rain or moisture. Warning Do not drop or push objects into the television cabinet slots or openings.
  • Page 6 Caution Never stand on, lean on, push suddenly the product or its stand. You should pay special attention to children to children. Caution Do not place the main unit on an unstable cart stand, shelf or table. Serious injury to an individual, and damage to the television, may result if it should fall.

  • Page 7: Images Of Module And Circuit Boards

    Images of Module and Circuit Boards 1.images of Remote Board Subassembly 2.images of Control Panel Subassembly 3.images of Main Board...
  • Page 8 5 images of Inverter...
  • Page 9 Key IC Description 1.UOC3 Function TV signal processor with Teletext and Nicam PIN SYMBOL DESCRIPTION VSSP2 ground VSSC4 ground VDDC4 Digital supply to SDACs(1.8V) VDDA3(3.3V) Supply(3.3V) VREF_POS_LSL Positive reference voltage SDAC(3.3V) VREF_NEG_LSL+HPL Negative reference voltage SDAC(0V) VREF_POS_LSR+HPR Positive reference voltage SDAC(3.3V) VREF_NEG_HPL+HRP Negative reference voltage SDAC(0V) VREF_POS_HPR Positive reference voltage SDAC(3.3V)
  • Page 10 AUDIOIN5L Audio-5 input(left signal) AUDIOIN5R Audio-5 input(right signal) AUDOUTSL Audio output for SCART/CINCH(left signal) ADUOUTSR Audio output for SCART/CINCH(right signal) DECSDEM Decoupling sound demodulator QSS0/AMOUT/AUDEE inter-carrier output/AM output/deemphasis(front-end audio out) GND2 Ground 2 for TV processor PLLIF IF-PLL loop filter AGC sound IF/internal-external AGC for DVB SIFAGC/DVBAGC applications...
  • Page 11 YIN(G/YIN2/CVBS-Yx Y-input for YUV interface(2th G input/Y input or CVBS/Yx input) YSYNC Y-input for sync separator YOUT Y-output (for YUV interface) U-output for YUV interface(2 RGB/YPbPr insertion UOUT(INSSW2) input) V-output for YUV interface(general purpose switch VOUT(SWO1) output) INSSW3 RGB/YPbPr insertion input R/PRIN3 R input/Pr input G/YIN3...
  • Page 12 Supply periphery on-chip voltage 110 VDDP(3.3V) regulator(3.3V) 111 P2.0/TPWM Poet 2.0 or tuning PWM output 112 P2.1/PWM0 Port 2.1 or PWM0 output 113 P2.2/PWM1 Port 2.2 or PWM1 output 114 P2.3/PEM2 Port 2.3 or PWM2 output 115 P3.0/ADC0 Port 3.0 or ADC0 input 116 P3.1/ADC1 Port 3.1 or ADC1 input 117 VDDC1...
  • Page 13 AHS0 ADC horizontal sync input Adjustable Schmidt trigger 5V tolerance Power from PIN 13 ADC_VDD ADC Power ADC_GND ADC Ground 1st Positive BLUE analog input (Pb+) 1st Negative BLUE analog input (Pb-) SOG0 1st Sync on Green 1st Positive GREEN analog input (Y+) 1st Negative GREEN analog input (Y-) 1st Positive RED analog input (Pr+) 1st Negative RED analog input (Pr-)
  • Page 14 BBLU7 Display B-port Blue Data 7 BBLU6 Display B-port Blue Data 6 BBLU5 Display B-port Blue Data 5 BBLU4 Display B-port Blue Data 4 BBLU3 Display B-port Blue Data 3 BBLU2 Display B-port Blue Data 2 BBLU1 Display B-port Blue Data 1 BBLU0 Display B-port Blue Data 0 BGRN7...
  • Page 15 104 ARED4 Display A-port Red Data 4 105 ARED3 Display A-port Red Data 3 106 ARED2 Display A-port Red Data 2 107 Pad 3.3V Ground PGND 108 Pad 3.3V Power PVCC 109 33VPNLOUT Panel on/off switch ot(Max current driving 1A) 110 COUT Crystal out 111 ARED1...
  • Page 17 4.TPA1517NE Function: Audio power amplifier IN1 is the audio input for channel 1 SGND SGND is the input signal ground reference SVRR SVRR is the midrail bypass mode enable OUT1 OUT1 is the audio output for channel 1 PGND PGND is the power ground refernce OUT2 OUT2 is the audio output for channel 2 VCC is the supply voltage input.

  • Page 29: Bus Control Adjustment

    BUS Control Adjustment Factory Menu: AUTO COLOR > ADC GAIN ADC OFFSET COLOR TEMP VIDEO COLOR ADJ BRIGHTNESS CONTRAST PAL AGC SECAM AGC DCXO DISCO AUTO > AUTO POWER AUTO BURNING 1. If you want to adjust some factory setting value you must enter the factory menu The method of entering the factory menu is that pressing “DISPLAY red key green key yellow key DISPLAY”...
  • Page 30 1. AUTO COLOR > ADC GAIN White Balance value{0-255} ADC OFFSET 128 Black Balance value{0-255} When the color is partial, AUTO COLOR is quite convenient, but if the result is not satisfied you, and you could adjust carefully ADC GAIN or ADC OFFSET. 2.

  • Page 31: Auto Power

    If the picture is very poor with some spot ,maybe AGC is not enough. You can adjust the corresponding PAL AGC or SECAM AGC DCXO DISCO AUTO > It`s used for adjusting NICAM. It`s ok when DISCO is set up to 127±2. 6.
  • Page 40 0.1uF-0603-Y5V-+80%-20%-50V 47uF-50V-±20%-5*12-105 0.1uF-0603-Y5V-+80%-20%-50V...
  • Page 41 Tel:86-532-88938356...