| Board Name | Contents | |------------|----------| | | ARM Cortex‑A9 (dual‑core), DDR3 RAM, NAND Flash, audio codec (AKM), USB host/device, HDMI (for external display) | | Sub/Key Scanner Board | 61‑key matrix, aftertouch sensing, joystick/pitch bend, EC5 pedal input | | Analog Audio Board | Line outputs (L/MONO, R), headphone amplifier, microphone input with preamp and gain control | | Power Management Board | DC‑DC converters: +3.3V, +5V, ±12V, 1.35V (core) | | Display Backlight Inverter | LED driver for LCD backlight (touch panel separate) | Korg Pa700 Service Manual
: Useful for calibration procedures, such as resetting the TouchView™ display if pointing becomes inaccurate. | Board Name | Contents | |------------|----------| |
If your RH-3 keybed registers notes at full volume or not at all, the manual provides the . It shows you which diode on the PCB corresponds to which note (e.g., D4 is row 3, column 7). Without this map, you cannot test the keyboard matrix with a multimeter. Without this map, you cannot test the keyboard