When There Is No History Of Protection Function; When There Is A History Of Protection Function; Diagnostic Menu - Loewe INDIVIDUAL SOUND PROJECTOR Service Manual

SP-1
The FL display of the main unit displays the protection
function history data and the version (1 alphabet) and the
DIAG menu [sub-menu (THR ALL) of DIAG menu No.1
DSP THROUGH] a few seconds later.

When there is no history of protection function:

When there is a history of protection function:

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 abnormality
will cause the protection function to work 1 second later
and the power supply will be shut off.
When there is a history of protection function due to
excess current of the amplifier IC (P.C.B. AMP IC516,
IC716) or abnormal voltage of the amplifier (+5VP)
Cause: Failure of amplifier IC or abnormal power voltage.
Turning on the power without correcting the abnormality
will cause the protection function to work 2 second later
and the power supply will be shut off.
28
DIAGNOSTIC MENU
1.DSP THR
2.RAM THR
3.PRO LOGIC
4.MIC CHECK
5.VFD CHECK
6.MAN LTEST
7.RS232C
Opening message /
オープニング表示
When there is no history
of protection function
Version (1 alphabet)
When there is a history of protection
function due to abnormal voltage in
the power supply section
Voltage display in %
8.PRESET
9.AD CHECK
10.IF STATUS
11.MODEL
12.VER/SUM
13.DATE
14.DSP CHECK
プロテクション履歴がない場合:
ダイアグメニュー表示
After a few seconds
プロテクション履歴がある場合:
Version (1 alphabet)
Version (1 alphabet)