Master Electronics Repair !: SAMSUNG MX-F730, MODEL CODE MX-F730/ZD MINI-COMPACT SYSTEM MICOM INITIALIZATION, REGION CODE SETTING, ELECTRIC SCHEMATIC DIAGRAM

Operation of Power Block Protection Circuit

Cases of the SMPS Protection.
1) If there is over current at the AMP IC. (Speaker Wire Short)
2) If temperature of the AMP IC is over 150 ℃.
3) There is no power supply for amp.

Check AMP in Power Protection. [Do not connect the power cord during the test]

MICOM, MPEG Initialization & Update

MICOM Reset
During STANDBY mode, push the ‘STOP” Button 5 Seconds. If VFD blinking, reset is finished.
Micom Update (Only for Flash Micom)
Method 1) MAIN PCB UTCN1 for update JIG. To update MICOM, it need Computer, Rom Writer, USB Cables. Method 2) Insert USB Memory, and play. “Update” will be displayed. Set will be power off when finish.
Method 3) Insert Update DISC, and play. “Update” will be displayed. Set will be power off when finish.
Micom & MPEG Version Check
1) Power On.
2) CD open status.
3) Push the number NEXT for 5 seconds, check the MICOM version.
4) Push the number PREVIOUS for 5 seconds, check the MPEG version.
MPEG Update
1) Insert USB Memory or Update DISC which have Update file, and play. “Update” will be displayed.
2) When finish the Set will be power off → on automatically.
3) And then the Deck is automatically open.
MPEG Reset
1) During “No Disc” Displayed, push the stop Button 5 seconds. After displayed “INITIALIZE” set will power off automatically.

The inserting method of Region Code after replacing the Main PBA

[When replacing the Main PBA and System Micom should be inserted the region code.
The set is not working properly if you don't insert the region code.
The region code is inserted by the remote control.]

1) During “AUX” status.
MX-F730/F730CB : Push the “ENTER” button 10 Second.
MX-F730D : Push the “D” button (blue key) 10 Second.

2) When displayed ‘TEST”, import 46 to set the buyer.

3) When displayed ‘– – –’, import the buyer code.
The buyer setting code can find in the table named “MX-F7**- Option-Table”.

4) It will show the buyer that you set up. Then the buyer setting is succeed.