I'm sure that I am just missing this but cannot see any instruction to add diode D3 to my V3 board.
Sheet 4 of the V3 schematic shows all the other components of this particular circuit installed.
Any info (step#) appreciated.
Diode D3
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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.
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kjones6039
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Re: Diode D3
107merc wrote:I'm sure that I am just missing this but cannot see any instruction to add diode D3 to my V3 board.
Sheet 4 of the V3 schematic shows all the other components of this particular circuit installed.
Any info (step#) appreciated.
D3 is part of the injector output circuit. I found this at step 58........
Hope it helps......58. Install and solder D3 {1N4001DICT-ND}. This is located near the center of the PCB, near R14 and R17. Observe the proper polarity.
Ken
1979 Corvette - 383 CID SBC w/ Holley Pro-Jection 900 CFM TBI, 4-85 lb lo-z injectors & Walbro 255 pump
MS2 v3 w/ms2extra 3.4.0 Release
36-1, Delphi LS2/7 coils in wasted spark, driven by v2.0 logic board from JBPerformance
Spartan Lambda Sensor from 14point7
MS2 v3 w/ms2extra 3.4.0 Release
36-1, Delphi LS2/7 coils in wasted spark, driven by v2.0 logic board from JBPerformance
Spartan Lambda Sensor from 14point7
Re: Diode D3
It is part of the 12 volt supply filter to U4. The purpose is to protect U4 if MS is connected with the wrong polarity.107merc wrote:I'm sure that I am just missing this but cannot see any instruction to add diode D3 to my V3 board.
Sheet 4 of the V3 schematic shows all the other components of this particular circuit installed.
Any info (step#) appreciated.
Dave P, London UK.
Rover V-8
MSII V3
EDIS
Tech Edge Wideband
Rover V-8
MSII V3
EDIS
Tech Edge Wideband
Re: Diode D3
Thanks. Don't know how I missed that. No more late night sessions!