Denon AVR-X3500H Service Manual page 145

3-2.4. Clearing the Protection History
There are two ways to clear the protection history.
(1) Activate Protection History Display Mode. Press the "STATUS" button to display the protection
history.
PRT:DC
Press and hold the "DIMMER" button for 3 seconds.
PRT:CLEAR
The above message is displayed and the protection history is cleared.
NO PROTECT
(2) Initialize this unit. (See "Initializing this Unit")
b Use the method in 3-2.4. (1) if you do not want to erase your settings from this unit.
Warning Displays by POWER LED
If the power is turned Off while a protection is being detected, the POWER LED flashes in red to warn
you depending on the protection status as follows.
(1) ASO/DC protection: Flashes at 0.5-second intervals (0.25 seconds lit, 0.25 seconds unlit)
(2) THERMAL (A/E/F) protection: Flashes at 2-second intervals (1 seconds lit, 1 seconds unlit)
(3) CURRENT protection: Flashes at 4-second intervals (2 seconds lit, 2 seconds unlit)
3-3. 232C Standby Clear Mode
3-3.1. Actions
Switches from 232C standby mode to normal standby mode.
3-3.2. Starting up
While holding down buttons "ZONE2 SOURCE", "DIMMER" and "STATUS" simultaneously, press the
power button to turn on the power.
Select the "3.RS232C RESET" using the "TUNER PRESET CH +/-" button, then press the "STATUS"
button then to confirm.
3.RS232C RESET
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