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RX-Z11/DSP-Z11
•
Starting Self-Diagnostic Function
Press the "MASTER ON/OFF" key while simultaneously
pressing the "PROGRAM" knob and "MENU" key of this
unit as indicated in the figure below.
The self-diagnostic function is activated.
Knob and key of this unit /
"PROGRAM" knob
Turn on the power while pressing these knob and key.
•
Starting Self-Diagnostic Function in the
protection cancel mode
If the protection function works and causes hindrance to
trouble shoot, cancel the protection function as described
below, and it will be possible to enter the self-diagnostic
function mode. (The protection functions other than the
excess current detect function will be disabled.)
Press the "MASTER ON/OFF" key while simultaneously
pressing the "PROGRAM" knob and "MENU" key of this
unit as indicated in the figure above. At this time, keep
pressing the "PROGRAM" knob and "MENU" key for 3
seconds or longer.
The self-diagnostic function is activated in the protection
cancel mode.
In this mode, the "SLEEP" segment of the FL display of
this unit flashes to indicate that the mode is self-diagnostic
function mode with the protection functions disabled.
CAUTION!
Using this product with the protection function disabled
may cause damage to itself. Use special care when us-
ing this mode.
•
Canceling Self-Diagnostic Function
1 Before canceling self-diagnostic function, execute
setting for PRESET of main menu No. 27 (Memory ini-
tialization inhibited or Memory initialized).
*
In order to keep the user memory stored, be sure
to select PRESET INHIBIT (Memory initialization
inhibited).
2 Turn off the power by pressing the "MASTER ON/
OFF" key of this unit or the "STANDBY" key of the re-
mote control.
42
"MENU" key
DIAG:RRT-INH
NO PROTECTION H
•
Display provided when Self-Diagnos-
tic Function started
The FL display of this unit displays the protection function
history data and the version (1 alphabet) then the main
menu (sub-menu MARGIN of main menu No. 1 DSP
THROUGH) a few seconds later.
When there is no history of protection function:
Opening message /
When there is no protection history
After a few seconds /
DIAGNOSTIC
NO PROTECTION H
When there is a history of protection function:
When there is a history of protection function due
to excess current
When there is a history of protection
function due to excess current
DIAGNOSTIC
I PROTECT H
Cause: An excessive current flowed through the power
amplifier.
Supplementary information: As current of the power
transistor is detected, the abnormal channel can be
identified by checking the current detect transistor.
Turning on the power without correcting the abnormality
will cause the protection function to work immediately and
the power supply will instantly be shut off.
Note)
• Applying the power to this unit without correcting
the abnormality can be dangerous and cause ad-
ditional circuit damage. To avoid this, if protection
function has been activated 3 times continuously,
the power will not turn on even when the "MAS-
TER ON/OFF" key is pressed. In order to turn on
the power again, disconnect the power cable of
this unit from the AC outlet once and then recon-
nect it again.
• The output transistors in each power amplifier
should be checked for damage before applying
power to this unit.
• Power amplifier current should be monitored by
measuring DC voltage across the emitter resistors
for each channel.
Main menu display /
1.DSP THROUGH
MARGIN
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