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SONY PFM42B2
Service Manual


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  • Contains Circuit Diagrams
  • Download
  • PDF Format
  • Complete manual
  • Language: English
Price: $4.99

Description of SONY PFM42B2 Service Manual

Complete service manual in digital format (PDF File). Service manuals usually contains circuit diagrams, printed circuit boards, repair tips, wiring diagrams, block diagrams and parts list. Service Manual ( sometimes called Repair Manual ) is used mainly by technicians.

If You just want to know how to use Your tv, video, mp3 player etc. You should look for Owner's Manual. After placing order we'll send You download instructions on Your email address.

The manual is available in languages: English

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Text excerpt from page 27 (click to view)
c) AUTO PLL PIXEL Selects the functions that are automatically adjusted when PIXEL ADJUST is executed. ON : Both the TOTAL H PIXEL and DOT PHASE are automatically adjusted. OFF : Only the DOT PHASE is automatically adjusted. In the case that the PFM-42B2/B2E is used under the environment where input signal contains much noise, there are cases that the PIXEL ADJUST mis-operations. Therefore, set the AUTO PLL PIXEL to the OFF position. In such a case, the TOTAL H PIXEL can be adjusted only manually. This function becomes valid only when the signal that enables the PIXEL ADJUST is inputted to the PFM42B2/B2E. Set the AUTO PLL PIXEL item to the ON position normally. d) H/V SHIFT Selects the method to control the horizontal and vertical picture shift. EDGE : When EDGE is selected, a picture is shifted by changing the starting position when reading data into memory. Using this function, the entire area including blanking of all pictures can be displayed by shifting. The variable range of shifting is 1 horizontal and vertical period respectively. CAPT : When CAPT is selected, the picture that is already written into memory is shifted by a scan converter. Using this function, a picture can be shifted as much as ± 50 % of a picture. When a picture is partly lacked at an end of a picture, the lacked portion of a picture cannot be displayed. Set the H/V SHIFT item to the EDGE position normally.

e) VIDEO SHARP SW Sets analog aperture ON or OFF. The two methods are used for the aperture correction of the video signals (NTSC/PAL/SECAM/NTSC4.43/ PAL60/PAL-M and YUV signal having horizontal frequency of 15 kHz). These two methods are the scaling filter and the analog aperture of the scan converter. ON : Both the scaling filter and the analog aperture of the scan converter are used for aperture correction. OFF : Only the scaling of the scan converter is used for aperture correction. This function becomes valid only when the signal (NTSC/PAL/SECAM/NTSC4.43/PAL60/PAL-M and YUV signal having horizontal frequency of 15 kHz) is inputted to the PFM-42B2/B2E. Set the VIDEO SHARP SW item to the ON position normally. f) AUTO FT CANCEL Sets the FT (field tearing) cancel circuit ON or OFF. The PFM-42B2/B2E has the FT (field tearing) prevention circuit caused by the overrun of memory while it is displaying the moving picture (video and DTV). However, there can be cases that noise appears on screen when the FT (field tearing) prevention is being executed. ON : The FT (field tearing) is cancelled in every picture size and in every shift conditions as long as the PFM-42B2/B2E is receiving the moving picture. When this item is set to ON, noise may appear only once after the size/ shift is adjusted. (Noise does not last long but appears only once when the size/shift adjustment is complete.) OFF : The FT (field tearing) cancel circuit is disabled. When OFF is selected, there can be a case that the FT (field tearing) appears on screen depending on the adjustment conditions of picture size/shift. However, the noise due to operation of the processing circuit does not occur. Set the AUTO FT CANCEL item to the ON position normally.

PFM-42B2/42B2E

2-5

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