Akai PDP4249G Service Manual Download Page 1 | Manualshive

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Akai PDP4249G Service Manual Download Page 1

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Summary of Contents for PDP4249G

Page 1: ...AKAI Dl u u u V SERVIC ...

Page 2: ...P L Y V I D E O D I S P L A Y BOARD 7 CHAPTER BLOCK DIAGRAM B LO C K D IA G R A M AC F I L T E R E M I BOARD DC POWER BOARD V I D E O BOARD A M P L I F I E R BOARD TUNER BOARD A S S E M B L Y D R AW IN G 8 TROUBLE SHOOTING FLOW CHART A S S E M B L Y CHART S E T T E S T CHART V I D E O D I S P L A Y CHART 9 CLEANING AND MAINTENANCE HANDY TIP S 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 1 ...

Page 3: ...UCT TO RAIN O R MOISTURE IMPORTANT A This lightning flash with arrowhead symbol within anequilateraltriangle is intended toalerttheuserto thepresenceofuninsulated dangerousvoltage within theproduct senclosurethatmay beofsufficient magnitude to constitutearisk ofelectric shock Theexclamation pointwithin anequilateraltriangle is intended to alert theuserto thepresenceofimportantoperating andmaintena...

Page 4: ...nessin colourinsomeparts ofthescreen Thiscanbeeliminatedby switching offthesetwith themainpowerbutton rearsite andwaitforlO minutesbefore switching onagain Ifthesituationremains callforService FrontView D D 0 0 0 0 0 0 0 I P o we r L E D I Me n u 1 E nter I S electU p I SelectD ow n I ____________ Volum e Volum e Rear View 3 ...

Page 5: ...ce personnel When the following situations happen please contact qualified engineer A The power cord or the power sockethas damages B If any liquid or solid objectfa ll into the machine through the ventilation holes C Expose the machine to rain or excessive moisture D The function does notfollow the user manual E The machine has ever been dropped or the glass has been broken F The function of mach...

Page 6: ...N D SUB DVI D S Video RCA Jack Speaker Jack AV Shielded Video cable 9 OSD controls Video a section 1 Picture H V Position NBrightness NContrastNSharpness N Color NTint NFrequency NPhase NAuto Image 2 Advanced Gamma NColor Temperature NColor Management 3 Source Analog RGB NDVI NComponent1 NComponent2 N S Video Video TV 4 Function Scaling NZoom NWhite Pattern NClose Caption N PIP Source N PIP Size N...

Page 7: ... T C A B L B 2I2N IN P U T ite n n a Ca b le m D l DVI D Output AnalogRGB Output V C R 1 1 r e D V DS Video Output C O M P O N E N T Y Pb C b Pr C r C M O F F D V DVideo Output D V DYPb Cb Pr Cr Output D V D Audio Output A N A L O G D V I IN P U T V G AIN S V ID E O IN P U T RS 232 INPUT A m plifier P Audio Inpu 6 ...

Page 8: ...he PDP in which Cn1 connected with alternating current AC through inductance filter L1 rectification bridge BD1 IC transformer T1 D3 D4 to CN2 output with 5V and 12V direct current The range of the AC output is from 90V to 264V and frequency is from 50Hz to 60Hz The largest detrition 7 ...

Page 9: ... n a l enters from J12 JP18 to U46 to perform signal then transform to U47 to decode perform s ig n a l then transform to U49 to deinterlace perform signal and enter to U29 the sig n a l passed to U33 fo r the o u tp u t o f v is u a l signal S Video S Video sig n a l in p u t from J12 to U47 to decode perform sig n a l then transform to U49 to deinterlace preform sig n a l and enter to U29 the si...

Page 10: ...CHAPTER BLOCK DIAGRAM 1 BLOCK DIAGRAM 9 ...

Page 11: ...2 A CFILTER 1 AC INPUT TO C1 2 C2 TO EMI BOARD J1 10 ...

Page 12: ...3 E M I B O A R D 1 AC F IL T E R C2 TO J1 2 J 2 TO PANEL DC POWER CN1 11 ...

Page 13: ...4 D CP O W E RB O A R D 1 1 EMI F IL T E R J2 TO CN1 2 CN2 TO MONITOR BOARD 12 ...

Page 14: ...5 V ID E OD IS P LA Y B O A R D J p 1 8 1 J 17 TO PANEL 2 J P 1 7 JP3 TO TUNER BOARD 3 J 2 5 TO DC POWER 4 J P 1 1 TO KEYPAD 5 J 4 TO A M P L IF IE R BOARD 6 J 5 TO RS232 CONNECTOR 13 ...

Page 15: ...6 A M PLIFIER B O A R D 1 VIDEO BOARD J4 TO J P 1 2 DC POWER BOARD CN2 TO JP2 3 JP3 TO RIGHT SPEAKER JACK 4 JP4 TO LEFT SPEAKER JACK 14 ...

Page 16: ...7 T U N E RB O A R D Jp 1 CABLE IN 1 VIDEO BOARD JP17 TO J P 1 2 VIDEO BOARD JP3 TO J1 3 CABLE TO CABLE INPUT 15 ...

Page 17: ......

Page 18: ...0 0 ASSEMBLY DRAWING ...

Page 19: ...TR O U B L ES H O O T IN GF L O WC H A R T 1 ASSEMBLY CHART 17 ...

Page 20: ...2 S E T T E S T C H A R T 18 ...

Page 21: ...3 V ID E OD IS P LA Y C H A R T 19 ...

Page 22: ...es not indicated that the display has a problem Therearespotsonthescreen Check whether your A V equipment is affected by interference from automobiles trains high voltage transmission lines neon signs or other potential sources of interference Degradedcolour tints Check whether all picture adjustment have been properly made Improperscreenposition size Check whether screen position and size have be...

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