Microsoft Office 2010 Product Key HP Network ScanJ
 

This segment is for commercial purchasers. D.I.Y. men and women can naturally also implement significantly less,Microsoft Office 2010 Product Key, the identical, far more, or variants. But individuals purchasing a conversion value a description of what is usually furnished. I also intention to supply precisely what the customer needs or desires, not a prepackaged answer, so never be frightened to inquire for that which you will need. Description topic to vary without observe (normally bug fixes & enhancements etc).
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Here is a final update (I hope) regarding the malfunctioning power supply. A short recap:
My scanjet resets during scanning. After some searching I found out that the -12 v supply collapses during scanning causing a reset of the mother board via the orange power_good signal. Connecting power_good to a constant +5V signal reduced the problem to the display. My first assumption was that the capacitors involved in the -12v circuit were bad. Replacing them however did not solve the problem.
A closer look at the -12 v supply reveals that the voltage is stabilised using a KA 78R12 voltage regulator. This IC has a voltage disable pin (pin 4) which disables the output voltage. Pin4 is connected using an opto- couple to another circuit. After connecting pin 4 with a stable voltage the reset problem disappeared. Bingo! Conclusion the -12v supply was not the cause of the problem but was merely resetting as a consequence of another problem.
Following the opto coupler I found out that it was connected to pin 11 of KA3501. Pin 11 is the power good output signal of the +12 +5 v regulator.
This signal triggered the reset of both the -12 v circuit as the mainboard.
Measuring VCC at pin 7, I measured around 18 V. Then I saw a small trimmer (potmeter as we say in Holland) close to the KA 3501. Turning this trimmer clockwise I was able to increase the VCC to 20 V. After that the problem was over.
So my recommendation with similar powersupply issues is to measure the voltage at pin 7 of the KA 3501. If it is below 20 v. Try increasing it using the trimmer and check whether symptoms disappear.