Acer AL702 AL702 Monitor Service Guide - Page 23

Checking the operation of CPU

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11. Checking the operation of CPU Is there +5.0V supply on I303 pin 44 OK NG Failure point Printed wire broke between output of FB320 and I300 power supply pin. Is 12MHz clock input to I303 pin 21 and 20 at TTL level? OK NG Failure point X301 failure. Check the input of 5V "H" pulse from I310 pin 4 are same as I303 pin 10. (14 msec Typ) NG OK Failure point 1) Printed wire broke between I310 pin 4 and I303 pin 10. I303 failure. A LC502 Page 14 Trouble Sh ooting

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