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アンプ Yamaha DP-U50のPDF サービスマニュアルをオンラインで閲覧またはダウンロードできます。Yamaha DP-U50 46 ページ。 Personal sound processer
Yamaha DP-U50 にも: セットアップマニュアル (47 ページ), サービスマニュアル (46 ページ)

Yamaha DP-U50 サービスマニュアル
G Starting DIAG
While the opening message appearing at the power ON is on display, press the "DSP" key 3 times; quickly at
the first and second times and keep pressing it at the third time until the DIAG function is started.
G Display when DIAG function is started
First, "DIAG" appears on the FL display of the main unit, followed by the version of the
microcomputer for 1 second (e.g., 1.000f), the checksum of the microcomputer for 2 seconds
(e.g., 7720) and finally the DIAG menu (e.g., 1: ALL). Also, all the function LED segments light
up.
DIAG started
When there is no protection function history (*1)
D I A G
Some seconds
later
Version of the microcomputer
1 . 0 0 0 f
1 second
later
Checksum of microcomputer
7 7 2 0
2 seconds
later
DIAG menu
1 :
A L L
(*1) When there is a history of the protection function
recorded, the type of the last protection function in the
record appears.
DP-U50
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