The Software Upgrade way (Update software via USB):
1. Download the Software into the root directory of a USB storage device.
2. Rename the download software file, such as rename the "PCM_MCU_V12.bin"to"PCM_MCU.bin“.
3. Turn on the unit and switch to the USB source. ‐‐>"NO USB" is displayed.
4. Connect the USB storage device to the USB socket on the unit. ‐‐>"MCU UPD"(MCU update) is displayed.
5. Press ">|| " key to start upgrade. ‐‐>"UPGING"(upgrading) is displayed during upgrade. At completion of upgrade, the unit reboots automatically.
6. Delete the "PCM_MCU.bin" in the USB storage device, and repeat step 1.>/2.>/3.>/4.>/5.> to upgrade MPEG S/W, Rename software file, such as rename "PCM_MPEG_FX20_55_V13.bin"to"PCM_MPEG.bin". ‐‐>"MPEG UPD" is display.
Do not turn off the power or remove the USB storage device when the software update is in progress because you might damage the unit.
The Software Version to view:
1.Turn on the unit and switch to the DISC source. ‐‐>"NO DISC" is displayed.
2. Press "EJECT" key to open the door. ‐‐>"OPEN" is displayed.
3. Press the key STOP > PROG > NEXT in turn on remote control, the VFD will show such as “M1220P13”
Note: When view software version type, VFD can be show below information:
M0820P16
M08 MCU version
20: FX20 model, if this unit is 15/25/30/50/55,mean is FX15/FX25/FX30/FX50/FX55 model
P16: Mpeg version.
Restore default settings:
You can also restore the default settings of the unit.
Turn on the unit, in any source, press and hold both the key >|| and PRESET‐ on the front panel for more than three seconds. ‐‐>after a while, "RESET OK" is displayed. Then, the unit reboots automatically.
Disassembly
Step 1: Open the top cover. Remove 5 screws on the back panel and 2 screw on the left and right sides,
then open the cover from the back panel side.
Step 2: Dismantle the loader. Disconnect the connectors on main board. Remove 2 screws besides the loader. Pull up the loader from the back panel side, the CD door will be separated at the same time.
How to dismantle the player
Step 3: Dismantle the loader bracket. Remove 1 screw on the bracket then remove the bracket directly.
Step 4: Dismantle the front panel. Disconnect the connectors on the main and power board. Release 2 buckles under the bottom plate and 2 screws on the left and right sides.
Step 5: Dismantle the USB board. Remove 2 screws on the board.
Buckles under the bottom plate and 2 screws on the left
Step 6: Dismantle the IN board. Remove 2 screws on the board.
Step 7: Dismantle the support board. Remove 2 screws on the board.
Step 8: Dismantle the key board. Remove 2 screws on the board and disconnect the connector.
Step 9: Dismantle the front control board. pull out the volume knob. Remove 9 screws on the board. Release the buckles on the board. Then pull out the board
Step 10: Dismantle the power board. Remove 4 screws on the board.
Step 11: Dismantle the main board. Remove 4 screws on the back panel and 2 screws on the board.
Block diagram for FX20
Circuit diagram – Front control board
Power board schematic
Main board schematic – SP8104WW
Schematic – Main board MCU
Schematic – Main board AMP ST518*2
Exploded view – FX20
