Marantz MM8003 - Page 7

5
CHART OF FACTORY MODE
Start
Press Factory Key
(SW41)
Turn on all CPU Version Indication LED
V1(D407)/V2(D406)/V3(D405)
Is all Temperature Sensor IC
(IC51/IC52/IC53/IC54) output voltage
0 °C  X  10 °C ?
10 °C  X  60 °C ?
Is all Temperature Sensor IC
(IC51/IC52/IC53/IC54) output voltage
Press Factory Key
(SW41)
Switch the Power Supply voltage switching
Relay(RY21/RY22) High voltage and Low
Voltage.
The fan is rotated at
Low speed.
The fan is rotated at
high speed.
YES
NO
YES
NO