Advertisement
OLED connector
OLED backlight booster circuit
5. Cannot save the data
For the SPI FLASH issues, please refer to the A1 chip part in this section Cannot turn on the power. Check if
the SPI FLASH is properly soldered, or if the chip is damaged.
6. MIDI issues
1)
Check whether MIDI block and MIDI line are normal.
2)
Check if the MIDI Out circuit is properly soldered. If the triode is damaged, replace it.
32
Advertisement
