Denon AVR-X2100W Service Manual page 50

3.5. Protection History Display Mode
3.5.1. Actions
This mode records and displays an event in which the THERMAL, ASO or DC protection was activated.
If protections have been activated multiple times, the latest protection operation is recorded.
3.5.2. Starting up
AVR-X2100W
·Hold down buttons "ZONE2 SOURCE", "DIMMER" and "STATUS" at the same time and press the power button to turn on
the power.
AVR-S900W
·Hold down buttons "TUNER PRESET CH+", "TUNE -" and "PRESET +" at the same time and press the power button to
turn on the power.
Select the "2. PROTECTION" using the button "TUNER PRESET CH+ / -", and press the button "STATUS" to commit the
selection.
3.5.3. Protection information and displays
·Press the "STATUS" button in Protection History Display Mode.
·The protection history can be checked.
(1) If no protections have occurred.
FLD
N O P R O T E C T
(2) ASO / DC (if the last protection was ASO / DC)
FLD
P R T : A S O / D C
Cause: A short circuit occurred between the speaker terminals, or speakers with an impedance outside the rating were
connected.
Abnormal DC output from the power amp.
Note: Short circuits in speaker terminals or speakers can be identified.
If the power is turned on during this abnormality, protection is activated after around 6 seconds and the power is turned off.
(4) THERMAL (if the last protection was THERMAL(A) or THERMAL(B) or THERMAL(E))
FLD
P R T : T H E R M A L
FLD
P R T : T H E R M A L
FLD
P R T : T H E R M A L
Cause: Abnormal heat sink temperature.
If the power is turned on during this abnormality, protection is activated after around 2 minutes and the power is turned off.
(4) Case of CURRENT (when the last protection incident was CURRENT protection)
FLD
: C U R R E N T
Caution： These protections may also be activated due to causes such as disconnection of connectors or operations
around the microcomputer.
After viewing the above protection history, press the button "STATUS" to return to the normal display.
A
B
E
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