Electrohelponline: Samsung MX-F730 - MINI-Compact System - How to disassemble, SMPS protection, MICOM , MPEG update and initialization, Country region code insertion, SMPS and POWER AMP schematic and more

Be careful to follow the disassembly sequence described here.Otherwise, the product may be damaged.
Be sure to carefully read and understand the safety instructions before performing any work as the IC chips on the PCB are vulnerable to static electricity.
In order to assemble reverse the order of disassembly.

Main Disassembly

1. Power on and Open the Deck, Separate CD-Door.

2. Unfasten 4 screws on the 2 side Cover. : BH 3*10 BLACK

(Be careful not to make any scratches as you remove them.)

4. Separate the Front panel

5. Unfasten 5 Screws in SMPS and detach AC-CORD & 15P shield wire. : BH 3*10 WHITE

6. Unfasten 2 screws up the DECK, Separate DECK from MECHA. : BH 3*10 BLACK

7. Unfasten 2 screws and detach DECK wire. : BH 3*10 WHITE

8. Unfasten 10 screws, and then separate the front PCB from Front Panel. : BH 3*10 WHITE

DECK Disassembly

1. Separate Tray - Disc from DECK.

2. Lift up Holder-Cable, separate Traverse-DECK.

3. Disassemble complete.

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.

How to check AMP in Power Protection

CAUTION
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.

Region code setting.

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.

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.