akira PTV-50H08 Скачать руководство пользователя страница 56 | Manualshive

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Model No.: PTV-50H08
Version: 1.0

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Содержание PTV-50H08

Страница 1: ...Projection TV Service Manual...

Страница 2: ...2 Model No PTV 50H08 Version 1 0 MODEL PTV 50H08...

Страница 3: ...3 Model No PTV 50H08 Version 1 0 CONTENTS SAFE NOTICE 4 SPECIFICATION 7 TV SET OVERVIEW 8 MAINTENANCE ADJUSTEMENT 9 NOTICE FOR MAINTENANCE 21 CIRCUIT DIAGRAM 35...

Страница 4: ...in this manual Improper maintenance may affect the safety and reliability of the product If you are not qualified to maintain the product never take a risk trying to maintain it find a qualified main...

Страница 5: ...the polarity of the plug exchanged Any leakage current values beyond the limits may cause electric shocks which shall be tackled before returning the TV set to the costumer or connecting antenna or ac...

Страница 6: ...efore maintenance shall also be made with an isolating transformer connected for better safety 6 Pay attention to the original lead covers especially those in the following areas to assure proper lead...

Страница 7: ...Yes Teletext Yes BBE Yes SRS Yes S VIDEO input terminals One side set and one back set Video input terminals One side set and two back sets Chromatic deviation input YprPb YcrCb One back set Audio L...

Страница 8: ...8 Model No PTV 50H08 Version 1 0 TV SET OVERVIEW...

Страница 9: ...justment Turn on the TV set with Key SK01 pressed to enter the status of under convergence adjustment now the three color squares displayed on the screen Press SK01 or Key CONV on the side panel to ex...

Страница 10: ...rse adjustment with the default mode being the coarse adjustment and with additional line adjustment function in the 13X16 mode 12 How to write the data of convergence adjustment In the status of conv...

Страница 11: ...oller to enter the status of a bright line 2 Adjust Clockwise slowly the red green and blue screen control potentiometers on the focusing assembly respectively until corresponding bright red green and...

Страница 12: ...and the green raster or the blue and the green raster 4 Adjust the deflecting coils of the red and the blue projection tubes on the TV set to make the red and the blue raster inclination degrees as sh...

Страница 13: ...ing finished adjust the lens focusing roughly 3 The contrast is set to maximum and others to medium 4 Receive the PAL video dot signal or the square signal Adjustment Procedure 1 Cover the red and the...

Страница 14: ...ole screen so as to make the beam shape of the whole screen best 3 Adjust the electron beam shape of the red and the blue tubes with the same method as above 4 After finishing the adjustment turn the...

Страница 15: ...and TXT on the remoter controller in sequence to enter the M status Adjustment procedure Adjust the field breadth HIT the row breadth WID the pincushion DPC the echelon KEY the upper corner UCNR and t...

Страница 16: ...t on the lens support to allow the lens support to turn Note do not over loosen The torque to screw the bolt or the butterfly screw is 1 18N m 12kgf cm 1 67N m 17kgf cm 4 Adjust the red the green and...

Страница 17: ...Lens Specification Unit Screen size 43 50 Feet Square 5 0 3 0 Square of the mesh At the edge I inner side max 2mm max 2mm Color distortion O external side max 2mm max 2mm Note Note slight orange or c...

Страница 18: ...ing Manual Adjustment of digital convergence Preparation of Adjustment 1 Receive the PH graphic card signal of the PAL system and make the following adjustment in the scanning modes of 60P 100I and 12...

Страница 19: ...rgence Adjustment for Users adjust with three scanning modes of 60P 100I and 1250I YPRPB signal respectively 1 Enter Nine dot Convergence Adjustment for Users In the TV mode press Key CONV on the side...

Страница 20: ...gh voltage distribution box with a good touch 3 Power up the TV set and regulate the high voltage potentiometer RH17 to get a voltage of 30 2 0 2kV indicated on the high voltage meter 4 Power off and...

Страница 21: ...2V5 and 3V3 STBY 7V Supply 5VA through IP71 to N812 PI5V330 the decoding board and IY01 HD74HC221FP SW 11V Get SW 9V 1 on the diagram 9V through IP73 ON OFF of the fine sound board and IP71 and the VI...

Страница 22: ...ng 28VP P SW 12V To the convergence plate via Jumper 4 of PDK3 12V To the high voltage generating circuit IH01 the pincushion correction circuit Q657 to the convergence plate via Jumper 1 of PDK4 28V...

Страница 23: ...23 Model No PTV 50H08 Version 1 0 Power Supply Diagram...

Страница 24: ...24 Model No PTV 50H08 Version 1 0 Diagram of the Protection Circuit...

Страница 25: ...oltage of the power supply 10 VSS Power Supply Ground 11 VDD3 3 Power Supply Voltage of input and output ports 12 CVBS_IN Input Input of color composite television signal 13 VDDA2 5 Power Supply Volta...

Страница 26: ...ing off etc 33 RESET Input Enter the reset status high level in order and low level reset 34 XIN Input Clock input 35 XOUT Output Clock output 36 VSSA Power Supply Ground 37 VDD2 5 Power Supply Voltag...

Страница 27: ...tandby 49 P1 4 Input NC 50 P1 5 BTSC_RST Input BTSC_RST level output RESET fine sound chip MSP3410G 51 P1 6 BUSY Input BUSY convergence module detecting the level input When the convergence module out...

Страница 28: ...28 Model No PTV 50H08 Version 1 0 Flowchart of Maintenance Troubles...

Страница 29: ...29 Model No PTV 50H08 Version 1 0...

Страница 30: ...30 Model No PTV 50H08 Version 1 0...

Страница 31: ...31 Model No PTV 50H08 Version 1 0...

Страница 32: ...rizontal DC deflexion 2 G CENTER V 00H 00H FFH Green vertical DC deflexion 3 B CENTER H 00H 00H FFH Blue horizontal DC deflexion 4 B CENTER V 00H 00H FFH Blue vertical DC deflexion 5 R COARSE H 06H 00...

Страница 33: ...CENTER H 00H 00H FFH Blue horizontal DC deflexion 4 B CENTER V 00H 00H FFH Blue vertical DC deflexion 5 R COARSE H 06H 00H 0FH Horizontal gain of red coarse adjustment 6 R COARSE V 06H 00H 0FH Vertic...

Страница 34: ...eflexion 3 B CENTER H 00H 00H FFH Blue horizontal DC deflexion 4 B CENTER V 00H 00H FFH Blue vertical DC deflexion 5 R COARSE H 06H 00H 0FH Horizontal gain of red coarse adjustment 6 R COARSE V 06H 00...

Страница 35: ...35 Model No PTV 50H08 Version 1 0 CIRCUIT DIAGRAM...

Страница 36: ...36 Model No PTV 50H08 Version 1 0...

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