Panasonic DMR-BS750EG Service Manual

Panasonic DMR-BS750EG Service Manual Manual pdf 58 page image

5810.3. Standard Inspection Specifications after Making RepairsAfter making repairs, we recommend performing the following inspection, to check normal operation.Use the following checklist to establish the judgement criteria for the picture and sound.No. Procedure Item to Check1 Turn on the power, and confirm items pointed out. Items pointed out should reappear.2 Insert RAM disc. The Panasonic RAM disc should be recognized.3 Enter the EE (TU IN / AV IN - AV OUT) mode. No abnormality should be seen in the picture, sound or operation.4 Model with the HDD: Perform self-recording and playback for oneminute using the HDD.No abnormality should be seen in the picture, sound or operation.5 Perform copy a program to disc and playback for one minute usingthe BD-RE (V2.0) and RAM discs.No abnormality should be seen in the picture, sound or operation.*Panasonic BD-RE (V2.0) and DVD-RAMs disc should be usedwhen copying and playback.6 If a problem is caused by a VCD, DVD-R, DVD-Video, Audio-CD, orMP3, playback the test disc.No abnormality should be seen in the picture, sound or operation.7 Models with SD Card Slot or DV Input Jack or USB Input Jack: Incase of that the trouble is caused by SD card and/or DV terminaland / or USB terminal.Models with SD Card or DV Input Jack;1) SD Card: Check to be able to display and copy the picture.2) DV terminal: Check to be able to record from DVC.3) USB terminal: Check to be able to display and copy the picture.8 After checking and making repairs, upgrade the firmware to the lat-est version.Do not turn the power off until writing is complete (The tray automat-ically opens when writing is complete.)."NoUPDATE" message indicates that updating the version is notnecessary since the version is the latest or the same one.9 Transfer [9][9] in the service mode setting, and initialize the servicesettings (return various settings and error information to theirdefault values. The laser time is not included in this initialization).Make sure that [CLR] appears in the LCD display.After checking it, turn the power off.Item Contents Check Item Contents CheckPictureBlock noiseSoundDistorted soundCrosscut noise Noise (static, background noise, etc.)Dot noise The sound level is too low.Picture disruption The sound level is too high.Not bright enough The sound level changes.Too brightFlickering colorColor fading