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It's a grate service manuals.Have many details and the writing it's so clear.You have all you want in manual,nothing missing,belive me.I'm verry satisfied of this manual.
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Great scanned service manual
Usefull informations.
I will buy again!
Best Regards
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The manual describes this product very good. It has the basic things to know and also a more detailed look. Very well made!
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An excellent document to assist in the repair of my old personal tape player. It includes full circuit diagrams and physical layout drawings and full instructions on disassembly and fault finding.
Well worth the meagre price.
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Very good conversation, Pretty fast Service, wood do it again,
Have paid by Paypal, so i got the Service Manual online after 15 Min.
Very helpfully.
Greeting from Germany,
Hans
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
Parts:
Signals:
ACZ_SDOUT0 ACZ_SDOUT1 ACZ_RST# ACZ_SYNC0 ACZ_SYNC1 ACZ_BIT_CLK0 ACZ_BIT_CLK1 ACZ_SDIN0
Re-test OK? No
Yes
Correct it.
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