I need a user manual for a Leader LBO 522 oscilloscope

Question edited for clarity full 'maker model (what it is)'.
Question moved form Cellphones.

Are you sure it isn't a Leader 220? The 210 refers to an Arc Welder Power Supply.

Manual for the 220 is here, or ask the company

https://www.telwin.com/en/prodotti/index.html?id=807539&clmer=84&clpro=62&cltec=01&clali=01&descProdotto=LEADER%20220%20START&lingua=E

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eBay sale item may be similar to yours with a manual:

https://www.ebay.com/itm/VINTAGE-OSTER-Double-Action-Electric-Knife-Sharpener-W-Manual-USA-Model-522-/153587369882



For link below, registration is required, and I have not personally registered to verify it. Apparently a 1950's device that may need to be serviced or replaced.

https://free-downloads.online/7711-0-c5e0c2f6/signup-blitz/#/theme=dark/c_bg={c_bg_enc}/z=51155/dp=2906786074.538571.44fa3ae453.33665.1c1e01e67e064c41c94abed63baaec57/q=Oster+knife+sharpener+manual/

Yahoo Web Search bernadette I hope this helps you. Did what I could! 8 minutes long. you'll find something. Thank you and leave feedback

http://www.eserviceinfo.com/fulltext.php?search_ft=service%20manual%20for%20Leader%20oscilloscope%20model%201041%2040Mhz
see if tht links helps it has all sorts of types of downloads choose the one you would prefer hope this helps..

@s_b_adams

You can get the user manual, drivers, and applications at the Acer's website here.

Cheers.

Hi! Welcome to www.fixya.com.
You could try this website and download the Aiwa NSX 522.
http://www.filecrop.com/nsx-522.html

Thanks for contacting Fixya. Bye for now.

Manual Link

Bought one last week - no trouble using it (my wife is blind so she needs it) I bought mine from Lidls. I have a user manual - where do you live?

Download a service manual for the Leader LMV-181A millivoltmeter free of charge from the Elektrotanya site. You're permitted two downloads daily without registration; it's a very useful service.
LEADER LMV 181A AC MILLIVOLTMETER SM Service Manual free download...