Marantz SR7009/U1B Service Manual page 76

3.6.4. Clearing the Protection History
There are two ways to clear the protection history.
(a) Start Protection History Display Mode. Press the button "STATUS" to display the protection history. Press and hold
the button "ENTER" for 3 seconds.
L1
P R O T E C T
FLD
L2
: D C
FLD L2
FLD L2
: N O
(b) Initialize this unit. ( "See "Initializing AV SURROUND RECEIVER"
Use the method in 3.6.3.(1) if you do not want to erase your settings from this unit.
b
Warning Displays by POWER LED
If the power is turned off while a protection is detected, the POWER LED (red) flashes in the following ways as a warning
according to the protection status.
(a) ASO/DC protection: Flashes in 0.5-second cycles (0.25 seconds lit, 0.25 seconds unlit)
(b) THERMAL (E/F) protection: Flashes in 2-second cycles (1 second lit, 1 second unlit)
(c) CURRENT protection: Flashes in 4-second cycles (2 seconds lit, 2 seconds unlit)
3.7. 232C Standby Clear Mode
3.7.1. Actions
Switches from 232C standby mode to normal standby mode.
3.7.2. Starting up
Hold down buttons "ZONE SELECT" and "BACK" at the same time and press the power button to turn on the power.
Select the "3.RS232C RESET" using the button "CURSOR f / d ", and press the button "ENTER" to commit the selection.
L1
2 . P R O T E C T I O N
FLD
L2
– 3 . R S 2 3 2 C
H I S T O R Y
Press and hold the button "ENTER" for 3 seconds.
C L E A R
The above is displayed and the protection history is cleared.
P R O T E C T
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