PianoDisc HD User Manual

PianoDisc HD/Prodigy Troubleshooting Guide
Table of Contents
1. System will not power up.
2. Driver board light are flashing.
3. System powers up but will not play. Driver board lights on and not flashing.
4. Six key solenoids do not play.
5. Pedal solenoid does not work.
6. Pedal solenoid is binding.
7. Cannot connect wirelessly to piano (HD-iQ system)
8. Prodigy troubleshooting
• Cannot connect with Bluetooth
• Music plays erratic and/or bad volume control
• Piano will not play, only symphony
• iPad settings for Prodigy
• Digital sound (squeal) on speakers
• No volume increase
When troubleshooting this system I try to do the easiest and obvious things first.
At the end of this guide there is instruction how to make a simple data test cable. This is a great
tool for checking for the 12 VDC power.
1. System will not power up.
1. Check to see if CPU light is on.
2. Check the power switch on plug strip.
3. Check power cord is plugged into wall socket.
4. Check voltage at the wall socket or if it is a switched plug socket.
5. Check the large and small power supplies for DC voltage
• The large power supply should have about 48 VDC. (See pic)
• The small power supply should have about 12 VDC. (See pic)
6. Check all plug connections.
Checking large power supply Checking small power supply

PianoDisc HD Specifications

General

Compatibility	Acoustic pianos
Type	Player system
Control	Remote Control
Features	High Definition Playback
Playback	MIDI
Recording	MIDI
Playback Quality	High-resolution

Summary

System will not power up

Power and Connection Verification

Check CPU light, power switch, wall socket, voltage, and all plug connections.

Power Supply Voltage Checks

Inspect large power supply (approx. 48 VDC) and small power supply (approx. 12 VDC).

Driver board lights flashing

Data Cable and Board Diagnosis

System powers up but won't play

Power Supply and Driver Board Voltage

Check small (12 VDC), large (48 VDC), CPU output (12 VDC), and driver board voltages.

Six key solenoids not playing

Key Solenoid and Driver Board Check

Pedal Solenoid does not work

Pedal Solenoid Grounding and Resistance

Test pedal solenoid resistance (6-7 ohms) and grounding; replace driver board if grounded.

Pedal solenoid is binding

Pedal Solenoid Resistance and Plunger Service

Cannot connect wirelessly to piano (HD-iQ system)

Prodigy Troubleshooting

Bluetooth Connectivity Issues

Troubleshoot Bluetooth connection: check selector, device count, iPad settings, and re-connect.

Erratic Music Playback / Volume Control

Piano will not play, only symphony