Marantz SA8004/K1SG Service Manual page 18

Serial number is displayed.
MZ_XXXXXXXXX
(11) Press 7 / 9 button
[A] SA-CD payback time is displayed.
PTime : 00021h
(12) Press 7 / 9 button
[A] CD payback time is displayed.
BTime : 00021h
Backup time (BTime) :
When replacing SA-CD module and reset playback times (total), the software is available that automatically backs up
(saves) playback times (total). You can check the information before replacing SA-CD module.
Press the ON/STANDBY button to quit Service Mode.
Factory Mode
To reset the back up memory of the unit into the default status, follow the procedure below.
(1) Turn on the unit and press 2 and ON/STANDBY button simultaneously more than 3 seconds.
(2) "Reset" is displayed, after "Reset OK" displayed on the display, and EEPROM is cleared to the default status,
microprocessor is reset and unit returns to the normal status.
Press 6 / 8 button
SA CD
Press 6 / 8 button
CD
[B] SA-CD backup time is displayed.
Press 1 button
Press 3 button
[B] CD backup time is displayed.
Press 1 button
Press 3 button
18
SA CD
PTime : 00021h
CD
BTime : 00021h