Very good service Within one day i received a pdf of the users manual and electric circuits so I was able to measure the different voltages in the printed circuit and find out the fault Payment was also reliable and easy.Without the manual i could not have repaired.So thanks to "Search for a manual"
you are doing great job guys.....my father ask me to find out the schematics of Sony KV25R1D to sort out the problem ..(he was electrical technician, and excperianced with TV and simillar stuff). finally he found the cause and change all necessary parts....now he has got working old dog..and is very happy!!... thank you all.. NB..he also saved the repair cost.
Item as described, very well detailed manual with complete schematics. I've received the download information shortly after payment, very good support.
Really good and well scanned. File is complete the full service manual for 5$
Text excerpt from page 224 (click to view)
A790 N/B Maintenance
8.12 Modem Test Error
An error occurs when run the modem.
MODEM Test Error 1.Check if the driver is installed properly. 2.Check if the notebook connect with the phone LAN properly.
Test OK? No
Yes
Replace a known good modem
t ent e cr m Se cu c Do al iT ia Mt n e d fi n o C
Board-level Troubleshooting Correct it. Replace Motherboard
U506 J10 J14 J7 F505 L531 L527 H1 H2 H3 H4
Check the following parts for cold solder or one of the parts one at a time and test after each replacement.
following parts on the mother-board may be defective, use an oscilloscope to check the following signal or replace the
