• The move to the new server is done. There are some software and database maintenance updates in process. This has us passing the hat around to help out. We appreciate any donations. Seriously, even a dollar helps. The payment page may be found here - https://www.audiokarma.org/support.html

Marantz 5020 modification question

jrfhoutx

Member
I have recently been working on brining a 5020 back to life, and with my recent success in doing so, and the amount of time I've spent looking over the 5220 service manual and schematics (the only ones i could find or had available), I've noticed that one of the few differences between the two units (5020 and 5220) is the 5020's lack of a Peak Indicator.

So, I figured I'd pose the question to the resident Marantz gurus: Would it be possible to add a Peak Indicator to the 5020?

as far as I can tell and the only difference I see is that the 5020 would need a pair of wires run from J301 and J302 to J663 and J662 (respectively) and then a set of leads from P600 points 5 & 6 to an LED. and then to remove some of the black covering the plexi front the meters are shown through so that the LED could be seen.

Is this correct, or would there be more to be done?
 
Register to hide this ad
Very sorry, forgot to add those. All I have is a few bits and pieces for the 5220, and nothing for the 5020, but here is what I do have...

just in case the attached files can't be read here are some links (dropbox download links) to better quality scans of the schematic and diagram pages from the 5220 service manual:

5220schem_001.jpg
5220schem_002.jpg
5220schem_003.jpg
5220schem_004.jpg
5220schem_006.jpg


Any and all help or input is greatly appreciated.

-James
 

Attachments

  • 5220schem_001.jpg
    5220schem_001.jpg
    59 KB · Views: 9
  • 5220schem_002.jpg
    5220schem_002.jpg
    81.3 KB · Views: 5
  • 5220schem_004.jpg
    5220schem_004.jpg
    71.8 KB · Views: 5
  • 5220schem_006.jpg
    5220schem_006.jpg
    73.9 KB · Views: 4
  • 5220schem_003.jpg
    5220schem_003.jpg
    49.9 KB · Views: 5
Back
Top Bottom