low voltage at CPU pin 31
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Read the manual to see if your question is answered there before posting. Many users will not reply if the answer is already available in the manual.
If your question is about troubleshooting, configuration, or tuning, you MUST include your processor type (MS-I or MS-II) and code version in your post. If your question is about PCB assembly or modifications, you must also include the main board version number (1.01, 2.2 or 3.0).
If you have questions about MS1/Extra or MS2/Extra code configuration or tuning, please post them at www.msextra.com Such questions posted here will be moved to: a temporary MSextra sub-forum, where they will be removed after 7 days
The full forum rules are here: Forum Rules, be sure to read them all regularly.
low voltage at CPU pin 31
I have 3.7v at CPU pin 31. CPU pins 1 and 20 have 5v.
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msiddalingaiah
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Re: low voltage at CPU pin 31
Which board?
Madhu
1990 Suzuki DR350S EFI Conversion
Returnless, adjustable electronic Fuel Pump Controller requires less power
1990 Suzuki DR350S EFI Conversion
Returnless, adjustable electronic Fuel Pump Controller requires less power
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Matt Cramer
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Re: low voltage at CPU pin 31
First check for any bad solder joints on the socket or stray flux, then check if D19 is getting hot.
Re: low voltage at CPU pin 31
It is a V3 board. I replaced D19 all ready and tuched up all the CPU pins .
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Matt Cramer
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Re: low voltage at CPU pin 31
Please measure the resistance across L2 - what do you find there?
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msiddalingaiah
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Re: low voltage at CPU pin 31
Also check if you have C22 backwards. It might be a tantalum. If so, they do bad things when connected backwards.
Madhu
1990 Suzuki DR350S EFI Conversion
Returnless, adjustable electronic Fuel Pump Controller requires less power
1990 Suzuki DR350S EFI Conversion
Returnless, adjustable electronic Fuel Pump Controller requires less power