ST15S1 marantz DAB-FM-AM TUNER - Circuit Daigram - Full
Used ICs: NM74LCX244
– AD1852 – ST232CDR – MB90350 – M24C64 – BU1924F – AK4103A – 74VHCU04 –
74HCT153 – NJM2068M
Factory
mode – Service mode
To
reset all settings to default status:
1. Press
the Power On/Off button to turn On the power.
2. Press
the Menu button and the Band select button at the same time; and pull the mains
cord out from the wall AC socket.
3. Insert the Mains
cord in again.
During
the initialization, it is converted to DAB Auto Tuning state.
[if
step 3 does not work, start over from step 1.
If
the microprocessor has been initialized all the button settings are reset to
the default values; the values set upon shipment from the factory.
Schematic (Circuit Daigram) - Click on the Schematics to Zoom In
Service
Mode
Microprocessor
version check
1. Connect
the mains cord to the unit.
2. Press
the Power On/Off button, while pressing the Menu and the Display button.
All
segment of FLD will be light on.
Turn
Gyro Tuning dial. Version is displayed
on FLD.
Turn
off the power to quit Service Mode.
