NEXT MA3200 Hi-Power Stereo Professional Amplifier full schematic

 

NEXT MA3200 Hi-Power Stereo power supply schematic

NEXT MA3200 Hi-Power Stereo CH1 Power amplifier schematic

NEXT MA3200 Hi-Power Stereo CH2 Power amplifier schematic

Samsung BN44-00339A Power supply (SMPS) circuit diagram

 SAMSUNG SMPS BN-44-00339A

Schematic diagram

Philco VISTA EXPLODIDA – PHT5000 Schematic diagram - Exploded View

 

Schematic diagram

SMPS schematic

Exploded view

715G6550 P03 000 0020 Philips SMPS , RSA G7 820 8349 SMPS and EAX65423701 LGP 3942 LED backlight supply board schematic

 

715G6550 P03 000 0020 Philips SMPS Schematic

RSA G7 820 8349 SMPS schematic

EAX65423701 LGP 3942 LED backlight supply board schematic

Yamaha T4n, T5n, T3n - stereo power amplifier schematic (circuit diagram)

 Yamaha T3n, T4n, T5n Power amplifier circuit diagram

ITT Touring Professional 107 and 107A-AM FM Radio - 9Volt – Circuit Diagram - printed circuit boards - Vintage Radio - 1975

 

VINTAGE RADIO of (1975)

Touring professional 107 schematic

Printed circuit boards of Touring Professional 107

Touring professional 107A circuit diagram

Touring professional 107A printed circuit boards

Drive chord assembly - Touring 107

Drive chord assembly – Touring 107A

Roland XPS-10 EXPANDABLE SYNTHESIZER circuit diagram, factory reset, data backup and more

 

Preset Memory
Patches: 1,273 + 256 (GM2)
Drum Kits: 19 + 9 (GM2)
Performances: 16
User Memory
Patches: 256
Drum Kits: 8
Performances: 128
Favorites: 100
Effects
Multi-Effects: 3 systems, 78 types
Chorus: 3 types
Reverb: 5 types

Sample Import Function
File Format
Audio File: WAV (44.1 kHz, 16 bits)
AUDIO PAD Section
File Format
Audio File: WAV, AIFF, MP3
External Memory
USB Flash Memory (supports USB 2.0 Hi-Speed Flash Memory: Sold
Separately)
Other
Rhythm Pattern
Preset: 24 groups x 6
Arpeggio
Preset: 128
Controllers
Pitch Bend/Modulation lever
Sound Modify slider x 9

Disassembly Procedure

1. Remove screws a (13) and b (5) in View 1 (Plane View (1)
2.  Lift the top case slightly and detach the wiring connecting the main board and the pedal board and the wiring connecting the keyboard and the panel board.

Verifying the Version

Use the procedure described below to verify the version of the application program. If the version of the boot program is also required,
refer to Test Mode

Press the MENU button.  The MENU appears

Press the Cursor Left or Right to select the Version Info, and then press Enter.  The version information screen appears.

Formatting a USB Memory Device
1. Insert a USB memory device into the USB MEMORY connector.

2.	Press MENU. The MENU screen appears.

3. Press CURSOR Left or Right to select UTILITY, then press ENTER.  The UTILITY screen appears.
4. Press CURSOR Left or Right to select USB MEM FORMAT, then press ENTER.  Format USB Mem? is displayed.
5. To execute formatting, press ENTER. To cancel it, press EXIT.
6. When formatting has finished, detach the USB memory device.

Data Backup Operations
Items Required
• USB memory device (recommended: M-UF2G)
Procedure
1. Format the USB memory device (as described earlier).

2.	Press MENU. The MENU screen appears.

3. Press CURSOR Left or Right to select UTILITY, and then press ENTER.  The UTILITY screen appears.
4. Press CURSOR Left or Right to select BACKUP, and then press ENTER.
NAME [ENT] flashes.
5. Press ENTER.
Backup is displayed.
6. To execute the backup operation, press ENTER. To cancel it, press EXIT.
When the backup finishes, the display returns to the original screen.

Data Restore Operations
Procedure
1. Insert the USB memory device containing the backed-up data into the USB MEMORY connector.

2.	Press MENU. The MENU screen appears.

3. Press CURSOR Left or Right to select UTILITY, then press ENTER.  The UTILITY screen appears.
4. Press CURSOR Right or Right to select RESTORE, then press ENTER.
5. Press ENTER again.
RESTORE: [ENT] flashes.
6. To execute the restore operation, press ENTER. To cancel it, press EXIT.
When the restore operation finishes, Completed. Turn off power. Is displayed.
7. Detach the USB memory device and reset the power.

Performing a Factory Reset

1.	Press MENU. The MENU screen appears.

2. Press CURSOR Left or Right to select UTILITY, then press ENTER.  The UTILITY screen appears.
3. Press CURSOR Left or Right  to select FACTORY RESET, then press ENTER.
Factory Reset is displayed.
4. To execute the factory reset, press ENTER. To cancel it, press EXIT.
When the factory reset has finished, Completed. Turn off power. Is displayed.
5. Reset the power.

Updating the System

Items Required
• USB memory device (recommended: M-UF2G)
• Update program (obtained via Service Net)
Procedure
1. Format the USB memory device. (Refer to Formatting a USB Memory Device
2. Copy the update program (xps10_up.bin) to the root directory of the USB memory device just described.
3. While the power to the unit is switched off, insert the USB memory device just described into the USB MEMORY connector.
4. Hold down ENTER and switch on the power.
The update starts automatically.
* Never switch off the power or detach the USB memory device while the update is in progress. Doing so may cause malfunction.
When finished. appears, the update has finished.
5. Detach the USB memory device and reset the power.
6. Verify that the version has been updated. (Refer to Verifying the Version

Circuit Diagram (Main Board)

Circuit Diagram (Panel Board: 1/3)

Circuit Diagram (Panel Board: 2/3)

Circuit Diagram (Panel Board: 3/3)

Circuit Diagram (Master Volume Board)

NVK 350A schematic diagram

 NVK 350 A -  USB circuit diagram