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Looking for schematic and repair info for a B&K Precision 1420 Oscilloscope

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Mick-M

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I need a schematic and repair info for a B&K Precision 1420 Oscilloscope

This is a Mini-Scope.

Thanks

Mick-M
 

If you still need the schematic, I have a copy laying around somewhere I could scan in.
 

jklasdf said:
If you still need the schematic, I have a copy laying around somewhere I could scan in.
Click to expand...

Hello, that would be great.
I have searched all over with no luck at all.

Mick M.
 

I'll try to get it scanned in this weekend.
 

The schematics with parts list should be attached. For the power supply, vertical and horizontal schematics I had to split the scan into 4 pieces and stitch them together. I think the results turned alright, but this was my first time trying to stitch scans together, so if you can't read anything just ask. The originals are pretty easy to read.
 

Attachments

  • parts.pdf.zip
    5.1 MB · Views: 138
  • horizontal.pdf.zip
    5.6 MB · Views: 152
  • vertical.pdf.zip
    5.9 MB · Views: 126
  • power.pdf.zip
    6 MB · Views: 161
hi, the diagrams a very helpfull to me too, sorry if my english i not so good, i´m from venezuela, and i have a bk 1420 scope, but y need information about how to calibrate this osciloscope, the scope turn on but the signal is very isnestable and erratic, if you can help me with more information about the service manual for the procedure for calibrating the scope i will be very grateful.

tanks.
 

The scans I posted are the complete service manual. Unfortunately, the manual doesn't really include a detailed calibration procedure or troubleshooting procedure. I haven't really done too much work with this oscilloscope, and can't really provide any more help than the schematics and parts list that I posted.
 

Hello;
I found a bad copy of the manual.
It has calibration info in it.

MickM
 

Attachments

  • 1420_manual.pdf
    1.3 MB · Views: 94

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