Service manual

YSP-500/HTY-750
28
YSP-500/HTY-750



プロテクション履歴がない場合:
The FL display of the main unit displays the protection
function history data and the version (1 alphabet) and the
self-diagnostic function menu [sub-menu (THR ALL) of
main menu No.1 DSP THROUGH] a few seconds later.
When there is no history of protection function:
NO PROTECT C 1.DSP THR ALL
Version (1 alphabet)

• Display provided when Self-Diagnos-
tic Function started
When the monitor is connected, the list of main menu
items is displayed on the monitor screen as shown below.
(This list remains on display until the self diagnostic
function is cancelled.)
● ダイアグ起動時の表示



When there is a history of protection function: プロテクション履歴がある場合:




















After a 5 seconds / 
Main menu display / Opening message / 
PS PRT:000 C
Version (1 alphabet)

Voltage display in %

P2 PRT:000 C
P3 PRT:000 C
Cause: The voltage in the power supply section is abnormal.
Supplementary information: The abnormal voltage is
displayed in % based on 3.3V as 100%.
Turning on the power without correcting the cause will
trigger the protection function to work 1.5 second later to
shut off the power supply.




