Haier TV-8888-42, Service Manual

Page 1: ...1 HAIER COLOUR TELEVISION SERVICE MANUAL PART TV 8888 42 HAIER AMERICA TRADING LLC www haieramerica com ...

Page 2: ... Functions 15 Remote Controller Functions 16 Program Diagram 17 22 Maintenance Service and Troubleshooting 23 27 Circuit Diagram 28 29 PCB Diagram 30 Circuit Explanation 31 33 Service Mode and Adjusting Items and Data 34 36 Circuit Signals Processing 37 40 Adjustment 41 42 Information of Resistors and Capacitors 43 Abbreviation of Part Name and Description 44 Terminal View of Transistors 45 ...

Page 3: ...3 PRODUCT CODE EXPLANATION AND SERIES INTRODUCTION BH 2004 D Color television appearance CRT cater corner 20inch Appearance serial BRAND ...

Page 4: ...balancer 13 NICAM 14 Multi audio modes 15 Tone adjuster 16 MTS SAP 17 AUDIO Auto volume leveling 18 AV input Y 19 AV output 20 DVD terminal 21 S video jack 22 Headphone socket Y 23 JIC SCART socket 24 Digital curtain 25 Slow fading on off 26 Semitransparent menu 27 Non flashing channel changing 28 ZOOM 29 16 9 mode 30 Games 31 Calendar 32 Child lock 33 Multi functional lock Y 34 No picture listeni...

Page 5: ...nge V 120V 43 Power frequency Hz 60HZ 44 Time of sleep timer mins 120MIN 45 Net weight lbs 46 2 46 Gross weight lbs 50 7 47 Net dimension MM 48 Packaged dimension MM 49 Quantity for 20 container 50 Quantity for 40 container 51 PARAMETER Quantity for 40 high container 52 Acquired certificate 53 APPROVAL Suitable market ...

Page 6: ...e circuitry that might be inadvertently introduced during the service operation If any fuse or Fusible Resistor in this TV receiver is blown replace it with a specified one When replacing a high wattage resistor Oxide Metal Film Resistor over 1W keep the resistor 0 39inch away from PCB Keep wires away from high voltage or high temperature parts Due to the high vacuum and large surface area of the ...

Page 7: ...set rain ormoisture 2 In order to prolong the using life of the TV set please place it on a ventilated place 5 Don t open the back cover otherwise it is possible to damage the components in the TV set and harmyou 3 Don t place the TV set in the sunshine or near heatsource 6 When the TV set isn t going to be used for long time or it is in thunder and lightening please pull out the plug fromAC outle...

Page 8: ...e any cleanser Avoid using a hard cloth the tube surface will be damaged CAUTION Before servicing receivers covered by this service manual and its supplements and addenda read and follow the SAFETY PRECAUTIONS NOTE If unforeseen circumstances create conflict between the following servicing precautions and any of the safety precautions always follow the safety precautions NB Remember Safety First ...

Page 9: ...f the insulated clip lead to the picture tube anode button using an insulating handle to avoid personal contact with high voltage 4 Do not spray chemicals on or near this receiver or any of its assemblies 5 Unless specified otherwise in this service manual clean electrical contacts only by applying the following mixture to the contacts with a pipe cleaner cotton tipped stick or comparable nonabras...

Page 10: ...s 5 Do not use freon propelled chemicals These can generate electrical charges sufficient to damage ES devices 6 Do not remove a replacement ES device from its protective package until immediately before you are ready to install it Most replacement ES devices are packaged with leads electrically shorted together by conductive foam aluminum foil or comparable conductive material 7 Immediately befor...

Page 11: ...ating the circuit board printed foil d Closely inspect the solder area and remove any excess or splashed solder with a small wire bristle brush Removal Replacement Some chassis circuit boards have slotted holes oblong through which the IC leads are inserted and then bent flat against the circuit foil When holes are of slotted type the following technique should be used to remove and replace the IC...

Page 12: ...ansistor from the heat sink of the circuit board Insert new transistor in the circuit board Solder each transistor lead and clip off excess lead Replace heat sink Diode Removal Replacement Remove defective diode by clipping its leads as close as possible to diode body Bend the two remaining leads perpendicularly to the circuit board Observing diode polarity wrap each lead of the new diode round th...

Page 13: ... gauge jumper wire and carefully crimp it around the IC pin Solder the IC connection 4 Route the jumper wire along the path of the out away copper pattern and let it overlap the previously scraped end of the good copper pattern Solder the overlapped area and clip off any excess jumper wire At other connections Use the following technique to repair the defective copper pattern at connections other ...

Page 14: ...14 NET DIMENSION ...

Page 15: ...15 PARTS AND FUNCTIONS Front and side panel of TV Set TV AV MENU VOLUME CHANNEL EARPHONE VIDEO AUDIO POWER When using the S terminal please pull out the Video 1 input terminal ...

Page 16: ...16 REMOTE CONTROLLER FUNCTIONS 1 6 7 8 9 2 3 4 5 0 RECALL TV AV RATING MUTE P STD SLEEP DISPLAY MENU CH VOL VOL CH 1 2 3 4 5 6 7 8 9 10 11 12 ...

Page 17: ...roma retarding lines and additional functions of black level extension bus geometric figure adjustment I2 C bu control on the basis of the 7687 resulting in test point free assembly reduced components of test point and peripheric components and improved picture quality The CPU LC863424 uses SANYO LC863432B 535A series for reprogramming In the design functions of CCD and V CHIP as well as various f...

Page 18: ... on the remote controller is pressed the menu will appear on the screen The CH and VOL buttons are used for setup 3 Press of CH or CH button will result in moving the icon up or down for function options The designated item will turn green 4 Pressing the VOL or VOL button can change the designated item VIDEO setup 1 Press MENU button for VIDEO option 2 Press CH or CH button to designate desired it...

Page 19: ... or VOL button to add or delete some channel 7 Input Press CH or CH button for option of INPUT Press VOL or VOL button or press AV TV button on the remote controller for option of AV TV 8 Press MENU button again to quit the main menu TIME setup 1 Press MENU button and the main menu appear on the screen 2 Press CH or CH button to move the icon for TIME setup The designated CLOCK under the icon will...

Page 20: ...OFFSET the digital value of the designated item can be adjusted by pressing VOL or VOL Function of this item is to change the location of the menu 6 Press MENU button again to quit the main menu V CHIP setup This function is designed for television program limitation The TV set user is allowed to control the usage of the TV set in accordance with the regulations of US Federal Communications Commis...

Page 21: ...NU button for option of UNBLOCK or BLOCK state 7 When ENTER PASSWARD is selected press MENU button then a dialog box will appear at bottom left corner of the screen and then a 4 digit password can be input Press RATING button again to return to the main menu The password must be input when entering the V CHIP submenu TV RATING 1 Press RATING button 2 When TV RATING is selected press MENU button an...

Page 22: ... RATING button and the RATING main menu will appear on the screen 2 When BLOCK turns bright red and MENU button is pressed BLOCK will display BLOCK OFF and BLOCK ON Caution BLOCK OFF Indicating lock on status Regardless setup of TV RATING and MPAA RATING even V CHIP signals are received during TV programs this TV set dos not have the V CHIP function BLOCK ON Indicating lock off status When TV RATI...

Page 23: ...heck N701 N101 etc Check to see if 9v 5v is normal Check the control Voltage of V552 or CPU power The failure of Horizontal unit or N101 Normal Normal Normal Abnormal Checktosee103Vetc Voltageisnormal Testtoseeallterminal Resistanceofload Isnormal Checkswitchof Powerunit Check to see if rectifying tube is normal Change rectifying tube Check the Loader Abnormal Normal Abnormal Normal Abnormal Norma...

Page 24: ...in13 of N201 to H drive No raster Whether G2 voltage is normal Video amplifying board is abnormal V433 is not well welded or open T431 V433 Or C415 C416 Care broken Higher Lower Inspect the circuit from pin19 20 and 21 of N201 to video amplifying board Check the voltage of V433 collector is normal Inspect T431 R434 etc Normal Abnormal Replace bad components Check N201 Check N201 and H Vibration Ch...

Page 25: ...401 with black probe Bright line flashes for a moment Horizontal bright line Check if the vertical deflection Deflection yoke plug Inspect 24V power circuit Check N201 and N701 Replace components There is trouble in V circuit There is trouble in V output circuit Yes No Check 451R451 Check the voltage at Pin2 of N401 ...

Page 26: ... in Color Replace CRT 66118618 Check circuit between Pin19 of N201 and XS202 No Yes Change V902 or weld V902 again Check to see if voltages of XP902 are normal Lack of red Check to see if V902 is open or not well welded ...

Page 27: ... is snapping Picture exists but no sound Power amplifier is normal Check N101 and external SIF circuit Check muting circuit and V601 V602 Check to see if 19V exists Check SIF circuit and speaker Inspect 19V power supply Cut off collection electrode of V602 use black pen of multimeter tap Pin1 of N601 if there is snapping sound Yes No ...

Page 28: ...ound IF Amplifier Video and audio signal Processing RGB Output Circuits and H V Sync pulse segregation SA W Sound Power Amplifier Main Processor Infrared Receiver Remote Controller ROM Audio Video In Out Horizontal Scan Output Vertical Scan Output CR ...

Page 29: ...29 2 CIRCUIT DIAGRAM R L 5 5 1 S D T S S 1 1 2 L M R T 1 0 1 H A 6 0 1 9 ...

Page 30: ...30 3 PCB Diagram ...

Page 31: ...can color decoding 2 LA78040 Vertical output integrated circuits 3 LA4225 Sound power amplifying integrated circuits A3 Electrical circuit analysis 1 Microprocessor and Small signal processing super monolithic integrated circuits LA76814A LA76814A is super large integrated circuit decoder containing intermediate image amplifying intermediate sound amplifying horizontal and vertical scan small sign...

Page 32: ...eft channel sound volume PWM output port 0 01 13 CPU reset port 5 1 31 Blank 14 OSD filter 3 55 32 Demagnetize 0 007 15 Video signal input 3 2 33 Blank 16 POWER ON OFF control signal output 0 03 34 Blank 17 Field pulse input 4 8 35 Blank 18 Line pulse input 4 3 36 Blank 2 N101 LA76814K PIN Leads Function Working Voltage V PIN Leads Function Working Voltage V 1 Video output 2 23 28 Reciprocal pulse...

Page 33: ...side video input 2 55 16 B input 0 15 43 Power 5 17 Beam limit 0 08 44 Inside video input 2 77 18 RGB Power 7 94 45 lack strech delay filter 2 6 19 R input 2 21 46 Video output 2 12 20 G input 2 36 47 Auto phase control filter 3 5 21 B input 2 28 48 VCO COLL 4 3 22 Line synchronized output 0 49 VCO COLL 4 3 23 Field sawtooth wave output 2 47 50 FILL FILTER 2 24 24 Field incline gain 2 65 51 Outer ...

Page 34: ... c Press VOL or VOL button to alter the value of selected adjustment items d In the factory production process the factory adjuster is used for accelerated adjustment Notices for adjustment OSD Range Ref B W BALANCE S BRI 0 127 80 R BIA 0 255 82 G BIA 0 255 180 B BIA 0 255 144 R DRV 0 127 58 G DRV 0 15 7 B DRV 0 127 63 C B W 0 3 0 ADJUST H PHASE 0 31 17 H BLK LEFT 0 7 7 H BLK RIGHT 0 7 0 V SIZE 0 ...

Page 35: ...Def 0 1 0 1 1 MID STP DEF Mid Stp Def 0 1 0 1 1 R Y B Y G BL R Y B Y Gain Balance 0 15 LA76814 no this function 0 15 8 R Y B Y ANG R Y B Y Angle 0 15 0 15 8 C KILL OFF C_Kill OFF 0 1 0 1 0 SND TRAP Sound Trap 0 7 0 7 4 VOL FIL Volume Filter Defeat 0 1 0 VIF SYS SW 0 45 75M 1 58 75M LA76814 0 1 0 VIDEO LEVEL Video Level 0 7 0 7 7 FM LEVEL FM Level 0 31 0 31 16 POWER OPTION 0 2 starts 1 memory 2 or ...

Page 36: ...0 CCD not used 1 CCD used 0 1 1 V CHIP OPTION 0 V CHIP not used 1 V CHIP used 0 1 1 PASSWORD OPT 0 V CHIP not used 1 V CHIP used 0 1 1 TUNER OPTION 0 TDF 3M3 not used 1 PHILIP UV1336B used 0 1 1 SCREEN OPTION 0 w out curtain 1 w at start 2 w at close 3 w at start close 0 3 0 SCREEN TIME 0 7 6 SCREEN HDC 0 63 0 BAND SELECT 0 1 0 ...

Page 37: ...controlled by CPU A swith inside I2C bus control LA76814 can be used for options of internal and external signals The sound signals are transmitted via LA76814 pin 1 to LA4225A pin 1 via C601 coupling and transmitted from its pin 4 after being amplified by LA4225A to the speaker The mute circuit 1 is comprised of V601 V602 and other components for Power On and Off mute Circuit 2 is comprised of CP...

Page 38: ...CRT board and then to the cathode of the TV tube after being amplified by videoamplifier which is comprised of V902 V912 and V922 CCD performance The CVBS signals produced by LA76814 pin 40 will be amplified and sent to N701 pin 19 via V821 and then processed by software and hardware inside CPU The decoded CCD signales will be transmitted to LA76814 pin 14 15 and 16 via CPU pin 22 23 and 24 V CHIP...

Page 39: ...2 7 CPU Crystal oscillation port 2 75 25 Blank 5 07 8 Power 5V 5 1 26 AV2 0 01 9 Plate control input 0 25 27 Av option control 1 0 01 10 AFT signal input 0 3 28 Control signal input 5 1 11 Blank 29 Right channel sound volume PWM output port 0 01 12 S terminal input test 5 1 30 Left channel sound volume PWM output port 0 01 13 CPU reset port 5 1 31 Blank 14 OSD filter 3 55 32 Demagnetize 0 007 15 V...

Page 40: ...8 2 87 12 Clock bus 4 85 39 Auto color filter 3 2 13 Beam input 4 76 40 Video output option 2 43 14 R input 3 92 41 Earth 0 15 G input 0 14 42 Outside video input 2 55 16 B input 0 15 43 Power 5 17 Beam limit 0 08 44 Inside video input 2 77 18 RGB power 7 94 45 Black strech delay filter 2 6 19 R output 2 21 46 Video output 2 12 20 G output 2 36 47 Auto phase control filter 3 5 21 B output 2 28 48 ...

Page 41: ...nt method is as follows B 104 1V adjustment 1 Switch on the power and connect NTSC circular signals to the tuner 2 Adjust variable resistor RP551 until the voltage of the main power is 104 1V Screen voltage adjustment 1 Switch on the power and receive NTSC system circular signal Warm up the TV set for 15 min 2 Enter the adjustment state Press the MUTE button then a bright horizontal line appears A...

Page 42: ... tuner to receive NTSC system circular signal 2 Enter the D state Adjust HPOS to change the horizontal position and V POSE to change the vertical position Adjust V SIZE to change the vertical size until the vertical size is 90 92 Horizontal size is related to the capacitor C436 Hold the horizontal size is 90 92 ...

Page 43: ...K 1000Ω M 1000KΩ 3 The unit of capacitance is µF microfarad P 10 6 µF Numbering system of Capacitor Example CL42 17 50V 2F4 104 Z Type Voltage Value PF Tolerance CL21X 100V 223 J Type Voltage Value PF Tolerance CL110X 25V 100µF 20 Type Voltage Value Tolerance 104 10 104 223 22 103 Numbering system of Capacitor Example RY17S 2W 390 J 05 E A Type Wattage Value Ω Tolerance RS11 1 2W 1 8K K Type Watta...

Page 44: ... RESISTOR CAPACITOR PART NAME DESCRIPTION TYPE ALLOWANCE T Carbon F 1 S Solid J 5 J Metal K 10 Y Oxide M 20 F Fuse G 2 PART NAME DESCRIPTION TYPE ALLOWANCE C Ceramic J 5 T Ceramic K 10 L Film L 15 D Electro analysis M 20 A Tantalum P 100 0 Z 80 0 ...

Page 45: ... C B 2SD18887YD 2SC4544 B A 2SB1569A E B A EXPORT 2SP2400A E B A EXPORT 2SC3853 2SC3852 E A 3DD2553 B A 3CA688 E A 2SC3853 2SC3852 B A 2SC1815 Y F 2SA1015 Y F 2SC752GTM Y F EXPORT 2SC2878 A TEM F EXPORT RN1204 DTC144ESATP EXPORT 2SA562TM Y F 2SC3355 F EXPORT ...