Panasonic TC-42PD1F, Service Manual

Page 1: ... 7W Power off condition 0 7W Plasma Display panel Drive method AC type 42 inch 16 9 aspect ratio Screen size 42 106cm diagonal 920mm W x 518mm H x 1056mm diagonal No of pixels 408 960 852 W x 480 H 2 556 x 480 dots Operating conditions Temperature 0 40 C Humidity 20 80 Applicable signals Colour System NTSC PAL PAL 60 SECAM Modified NTSC signals cannot be displayed Scanning fomrat 525i 525p 625i 62...

Page 2: ...ma Display Technology 8 Service Hints 13 Adjustment Procedures 14 Alignment Setting 17 Self Check 22 Trouble shooting guide 22 Location of Lead Wiring 25 Dimentions of the display unit 25 Connector Connection Signal Name 26 Block Diagram 27 Parts Location 28 Replacemant Parts List 30 ...

Page 3: ... AC cord and connect a jumper between the two prongs on the plug 2 Turn on the Projection Monitor s power switch 3 Measure the resistance value with an ohmmeter between the jumpered AC plug and each exposed metallic cabinet part on the projection monitor such as screw heads connectors control shafts etc When the exposed metallic part has a return path to the chassis the reading should be between 4...

Page 4: ... 4 Operation Instruction ...

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Page 8: ...ed Green and Blue colour phosphors are formed on the data electrode with the ribs However to improve colour reproduction and brightness each colour phosphors are formed different width This is called Asymmetrical cell as Panasonic original technology Front Glass Structure Fig D On the front glass scan and sustain transparent electrodes are mounted in pair The dielectrics is coated on the front gra...

Page 9: ...e discharge become small gradually Then any electric charge is cleared Write Fig H Data Pulse which is positive polarity is input to data electrode and Scan pulse which is negative polarity is input to scan electrode simultaneously That means sum of data and scan pulses voltage is applied between two electrodes as discharge start voltage Discharge is started into the pixel and gas is ionized Durin...

Page 10: ...ustain pulse is input between sustain and scan electrodes and voltage potential between two elec trodes becomes sum of Sustain pulse and wall voltage Then discharge start Sustain Step 2 Fig K When sustain pulse is stopped Ions and Electrons are remained again as Wall voltage However polarity of wall voltage is reversed Sustain Step 3 Fig L Positive polarity s Sustain pulse is input between sustain...

Page 11: ...d Therefore depend on sustain dis charge time brightness of pixel is controlled Sub Field drive Fig P Sub Field drive is PDP unique system While one TV field period 8 bits digital video signal compo nent is reproduced by 8 sub fields operation Each Sub Field s address period are all same Consist of one initialization and 480 scanning operation But Sustain period of each Sub Field are different 1st...

Page 12: ...l sub field drive operation which is called Multi Sprit Sub Field drive control system Depend on the picture contents APL Average Picture Level number of sub field are changed from 10 to 12 Vari able Sub field Sustain time format of each sub field are also rearranged from binary format to linear cording sustain time Linear cod ing sub field Plasma AI select the best display condition for Plasma di...

Page 13: ...ion C2 board Data drive Upper Right P8 board Processing voltage protection C3 board Data drive Lower Right H2 board PC input terminal C4 board Data drive Lower Left F board Line filter SU board Scan out Upper H4 board Speaker terminal SD board Scan out Lower SS2 board Sustain connection Upper SS3 board Sustain connection Lower Remove 4 screws A 6 screws B 10 screws C 9 screws D C1 SU C2 C4 C3 F SD...

Page 14: ...e specified voltage Test Point Voltage Volume Name P4 pin 1 Hot 400 V 1 V R548 PFC Confirmation Cold P1 pin 10 15 V 0 5 V 15 V P5 pin 1 13 V 0 5 V 13 V P6 pin 1 13 V 0 5 V Audio 13 V P6 pin 3 13 V 0 5 V Audio 13 V P5 pin 5 5 V 0 5 V 5 V P5 pin 8 3 4 V 0 5 V 3 3 V P7 pin 1 14 V 1 V STB 14V P7 pin 6 5 V 0 5 V STB 5 V Adjust driver section voltages referring the panel data on the panel data label Tes...

Page 15: ...tment Volume Location Test Point Location R6565 R6501 R6597 R6587 R6754 230V 110V Switch R541 R528 R494 R639 R6654 Panel Data Label TPDA3 TPDA1 TPDA2 TPDA5 TPDA4 TPDA6 TPVSUS TPVE TPSC1 TPSCN TPSET TPSS2 TPSS1 ...

Page 16: ... balance Normal Confirm the indicated test point for the specified wave form Adjust the angle of the erase pulse Adjust the indicated test point for the specified wave form Test Point Volume Name TPSS1 SS Sustain Pulse Test Point Volume Name TPSS1 SS R6754 SS Erase Pulse Test Point Volume Name TPSC1 R6565 SC Initialize Pulse TPSC1 R6654 SC Initialize Pulse 2 6 sec 1 6 sec 185 V 5 3 sec 205 5 V 15 ...

Page 17: ...emote control 4 Select the alignment item by the LEFT or RIGHT buttons of the Cross buttons on the remote control 5 Adjust optimum setting by Volume Up and Down buttons The reference figures below are normal and used for representative purpose only Exit 6 To exit the IIC mode press the menu button on the remote control To exit the CAT mode access the ID mode by the down button of cross buttons and...

Page 18: ... Y Axis Gain Sub Colour DS contrast Sub Contrast SG Hold Sub Tint Pos Size H Position V Position V Size H Size Panel APL ABL APL Shift Level ABL Point ABL Bank select ABL Gain B Drive Sub Contrast Panel W B Brightness R Cutoff B Cutoff Contrast Aging Panel Color 0 White 1 Blue 2 Green 3 Red 0 Other 1 NTSC 2 PAL 3 SECAM 4 525i 5 625i 6 525p 7 HD 8 Not used Scroll Bar R Drive B Drive Volume ...

Page 19: ...as follow 2 Record the setting data of Sub Tint and Sub Colour 3 Access the SG Hold mode Forced signal system set mode and set the system to NTSC 4 Return to the Chroma Control mode and copy the Data 2 for each item 5 Repeat item 3 and 4 for SECAM and 525i system Sub colour data for SECAM system should be reduced 5 steps from data 2 Alignment Item Reference Setting Special feature Sub Contrast 66 ...

Page 20: ... Cool mode data 5 Change the Manual W B to Warm by the Menu button and set the white balance data by Increasing the R Drive data 30 steps and reducing the B drive data 35 steps B cutoff 2 step from Cool mode data 6 Access the SG Hold mode Forced signal system set mode and set the system to NTSC 7 Return to the Panel W B mode and copy the Data 3 for each item 8 Repeat item 6 and 7 for 525i 625i and...

Page 21: ...oll bar approximately 15 minutes after alignment is competed 1 Access the Scroll bar menu by Left or Right button of cross button and press the STR button 2 To exit press the Menu button Note CAT Computer Aided Test mode Alignment Item Reference Setting Special feature APL Shift Leve E2 Confirmation only ABL Point 10 Confirmation only ABL Gain E0 Confirmation only ABL Bank Select 3F Confirmation o...

Page 22: ...C2 IC8501 OK H51 IC8516 OK H52 IC8506 OK H53 IC8509 OK H54 IC8002 OK H55 IC8004 OK H51 IC8010 OK H59 IC8013 OK H57 IC8007 OK H58 IC9100 OK H60 IC9210 OK H61 IC9410 OK H62 IC9801 OK H63 IC9804 OK H91 Trouble shooting guide LED Indication 1 The Power LED indicates faulty status of power supply circuit by flashing When one of secondary supply volatage is decreased under 2 3 of orignal voltage the pow...

Page 23: ...r P board What signal Check OSD Check drive pulses DS input HG board D board HG board HG board SC or D board SS or D board RGB Component PC 525p 625p All Input Display OK No SC pulse on TPSC1 No SS pulse on TPSS1 No signal OK Component AV A 15 17 19 A 7 9 Check AV NTSC PAL SECAM Component 525i 625i No signal both SC SS When drive pulses are oscillated correctly slight hum noise can be heard from t...

Page 24: ... C B Item Volume Test point Level P board VDA R528 TPDA1 C1 75V 0 5V VSUS R639 TPVSUS VSUS 1V VE R494 P1 TPVE VE 1V DS board DS contrast IIC mode TP216 0 7 Vp p SC board Vset R6587 TPVSET VSET 0 5V Vscn R6595 TPVSCN 80V 0 5V SS board Erase pulse R6754 TPSS1 Waveform D board Re confirmation of all alignment setting ...

Page 25: ... 6 5 4 2 1 15 12 14 13 3 8 9 CORE CORE CORE CORE CORE Dimentions of the display unit 1030 444 5 63 5 920 2 53 9 633 5 518 50 210 275 633 5 89 36 REMOTE TUNER IN PC IN AV SPEAKERS 8 COMPONENT RGB IN P R SEPIAL R VD S VIDEO VIDEO IN OUT AUTO AUDIO 60MHz HD AUDIO P B Y G L R L R B L R 178 15 15 15 15 18 36 129 184 275 234 53 9 To connect the power cord and others refer to the documentation that comes...

Page 26: ...2 DET GND ALL OFF TUNER OFF STB 14 V 1 2 3 4 5 6 7 8 STB 5 V IIC CONT GND SCL1 SDA1 SCL2 SDA2 GND TXD GND RXD VTR STS 1 2 3 4 5 6 7 8 9 10 11 12 GND KEY GND REMOCON GND STB 5 V LED G LED R RESET CABLE DET 1 2 3 4 5 6 7 8 9 10 SP L GND SP R NC HP L GND HP R 1 2 3 4 5 6 7 STB 5 V IIC CONT GND SDA1 SCL1 SDA2 SCL2 1 2 3 4 5 6 7 SP L GND SP R GND 1 2 3 4 R GND G GND B GND HD VD SCL SDA 1 2 3 4 5 6 7 8 ...

Page 27: ...SYNC RGB VOLTAGE 3 3V SUSTAIN 21 6 PROCESSING PROCESSOR PROTECTOR P PROCESS 5V VOLTAGE P H D 5 INTERLACE 81 VOLTAGE 15V PROTECTOR P 17 7 PROGRESSIVE 15V 71 CONVERTER 13V VPC CIP VSUS AMDP AUDIO Section PRIMARY SUSTAIN VE VSUS 20V RGB DFU CIRCUIT VOLTAGE VDA 70V P H SWITCHCS 17 BBE AUDIO AMP STAND BY 5V H26 H12 H77 H5 H6 H24 H22 H27 H11 PRIMARY 110 230 VOLTAGE SWITCH CONTROL P5 P3 P VIDEO RGB TUNER...

Page 28: ...rts Location 26 Cabinet with Filter glass 14 S1 Board AC Cord Power Button 13 35 Bracket 32 28 Front Button 29 V1 Board 15 S2 Board Back cover Bracket 30 Bracket 31 27 Remote Control Transmitter 34 Bracket 33 ...

Page 29: ...oard 3 D Board 20 P8 Board 1 DS Module 2 HG Board 23 H4 Board 5 SC Board 8 C2 Board 18 P6 Board 17 P5 Board 16 P3 Board 22 F Board Fuse 9 C3 Board 25 SS3 Board 19 P7 Board 10 C4 Board 4 Power Assembly 21 H2 Board 6 SS Board 24 SS2 Board ...

Page 30: ...on Upper 25 TNPA1419 SS3 board Sustain connection Lower Important Safety Notice Components identified by mark have special characteristics important for safety When replacing any of these components use only manufacturer s specified parts Ref No Parts Number Description Mechanical Parts 26 TTEA0015 2 Cabinet with Filter glass 27 TTUA0277 Back Cover 28 TBXA21101 Power Button TBXA21202 Front Button ...

Page 31: ...MEMO 31 ...

Page 32: ...Printed in Japan 99060250 H 0615 ...