Marantz SR7500/A1B Service Manual page 12

Note: Step4, 5 is to check if CPU software is capable of
DSP code. "Software Type No" is to show what "DSP
Code Group" CPU is capable of. And vice versa.
Step 9 is to manage the 40 codes for DSP.
• When the unit is once turned into Service Mode, the
unit keeps this mode until the main power is turned
off. (Turning into stand-by mode does not make it
quit from Service Mode.) When the unit quits from
Service Mode, Information in the memory is also
cleared and the unit returns to the status when it is
out from the factory.
Product Reset
To reset the back up memory of the unit into the default sta-
tus, follow the procedure below.
1. Turn of the unit and press SPEAKERS A/B and MULTI
button simultaneously more than 1.5 seconds.
2. After "DEFAULT" is displayed on FLD, power is turned
off once and turned of again, EEPROM is cleared to
the default status, µ-com is reset and the unit returns to
the normal status. (Software Serial Number will not be
cleared.)
Note: When the unit is shipped from the factory, the proce-
dure above must be done to set the unit to initial sta-
Personal notes:
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