Specifications - Marantz NR1504 /U1B Service Manual

3.5.3.Clearing the protection history
There are two ways to clear the protection history, as described below.
(1) Start up the set in error (protection display) mode and display the error, then press and hold down the "DISPLAY"
button for 3 seconds.
FLD
P R T : D C
FLD
P R T : C L E A R
FLD
N O
(2) Initialize. (Refer to "Initializing AV Surround Receiver"
If you want to save a backup, perform the method in 4.1.(1).
b
Warning indication by the POWER LED
If the power is turned off when a protection incident has been detected, the POWER LED (red) flashes as a warning
according to the conditions in which the protection incident occurred.
(1) ASO/DC PROTECTION : Flashes at intervals of 0.5 seconds (0.25 seconds lit, 0.25 seconds off)
(2) THERMAL (A/B) PROTECTION : Flashes at intervals of 2 seconds (1 second lit, 1 second off)
3.6. Operation Info mode

3.6.1. Specifications

This mode displays the accumulated operating time, power on count, counts for each protection on the set.
3.6.2. About the display on the FL display
When the set has started in the Operation Info mode, press the "STATUS" button to display information in the following
order.
(a) Accumulated operating time
FLD
O P T i m e
(b) Power on count
FLD
P . O n
(c) DC /ASO Protection count
FLD
D C :
(d) Thermal Protection count
FLD
T H M
Press and hold down "DISPLAY" button for 3 seconds.
The above is displayed and the protection history is cleared.
P R O T E C T
"STATUS"
T i m e
"STATUS"
/ A S O :
"STATUS"
A : / B
"STATUS"
(Returns to normal display)
11 page.)
H
↑ Time display
↑Count display
44