Marantz SR4500, Service Manual

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Note :
Step3, 4 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 8 is to manage the 16 codes for DSP.
• When the unit is once turned into Service Mode, the unit
keeps this mode until the main power is turned off. (Turn-
ing into stand-by mode does not make it quit from Service
Mode.) When the unit quits from Service Mode, Informa-
tion 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 ATT and 7.1CH INPUT 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 de-
fault status,
µ
-com is reset and the unit returns to the nor-
mal status.
Note :
When the unit is shipped from the factory, the procedure
above must be done to set the unit to initial status after the
tests.
Personal notes: