marantz ST15S1 - Schematic (Circuit Diagram) - How to enter Service Mode
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.