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HP 48S IR Loop-Back Test fail
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HP 48S IR Loop-Back Test fail
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HP 48S IR Loop-Back Test fail
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03-12-2021, 04:39 PM
Post: #1
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HP 48S IR Loop-Back Test fail
I've just acquired a 48S that fails the IR Loop-Back test. The screen reads "IRLB 20000". What does this indicate, apart from failure? The calculator communicates perfectly well with my 82240B printer.
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HP 48S IR Loop-Back Test fail - calculon - 03-12-2021 04:39 PM
RE: HP 48S IR Loop-Back Test fail - Jonathan Busby - 03-12-2021, 07:45 PM
RE: HP 48S IR Loop-Back Test fail - toml_12953 - 03-12-2021, 10:36 PM
RE: HP 48S IR Loop-Back Test fail - calculon - 03-12-2021, 08:44 PM
RE: HP 48S IR Loop-Back Test fail - Jonathan Busby - 03-12-2021, 08:46 PM
RE: HP 48S IR Loop-Back Test fail - John Keith - 03-12-2021, 10:24 PM
RE: HP 48S IR Loop-Back Test fail - Jonathan Busby - 03-13-2021, 07:08 PM
RE: HP 48S IR Loop-Back Test fail - calculon - 03-12-2021, 11:10 PM
RE: HP 48S IR Loop-Back Test fail - Jonathan Busby - 03-13-2021, 09:20 PM
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