Marantz NR1506 /U1B Service Manual page 42

3.6. Operation Info Mode
3.6.1. Actions
This mode enables the unit to display the accumulated operating time, power on count and each protection count.
3.6.2. Starting up
While holding down buttons "ZONE2 SOURCE" and "STATUS" simultaneously, press the power button to turn on the
power.
Select the "4. OP INFO" using the "TUNER PRESET CH+" button, then press the "STATUS" button to confirm.
3.6.3. Operations
Press the "STATUS" button after starting up this device in Operation Info mode.
The following information is displayed 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
(e) Current Protection count
FLD
C u r r e n t :
(Returns to normal display)
"STATUS"
T i m e
"STATUS"
/ A S O :
"STATUS"
A : / B :
"STATUS"
"STATUS"
H
↑ Time display
↑ Count display
42