Owner's Manual
Page 140
... for service should be prepared to provide proof purchase date (sales receipt, credit card copy, etc.) when requesting service and/...DGX, YPG SERIES OF Portable Grand ELECTRONIC KEYBOARDS If during the first 90 days that immediately follows the purchase date, your responsibility to be serviced under warranty. 3. IMPORTANT: Do NOT ship anything to extremes in temperature or humidity. 2. or in any retail outlet authorized by Yamaha... to sell the product, an authorized service center, or an authorized service representative of Yamaha. 3. DO NOT MAIL! 140 DGX-620/520...
... for service should be prepared to provide proof purchase date (sales receipt, credit card copy, etc.) when requesting service and/...DGX, YPG SERIES OF Portable Grand ELECTRONIC KEYBOARDS If during the first 90 days that immediately follows the purchase date, your responsibility to be serviced under warranty. 3. IMPORTANT: Do NOT ship anything to extremes in temperature or humidity. 2. or in any retail outlet authorized by Yamaha... to sell the product, an authorized service center, or an authorized service representative of Yamaha. 3. DO NOT MAIL! 140 DGX-620/520...