Yamaha PSR-E343 - DMLCD Circuit Board Test Method; Symptoms and Check Items

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PSR-E343/PSR-E344/YPT-340
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DMLCD Circuit Board Test Method
The DMLCD Circuit Board is provided with test points for service check purposes.
Check the test points on the DMLCD Circuit Board if the following symptoms appear.
Symptoms and check items
1) No LCD display with Power SW ON
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> Check items 1 to 7 sequentially
2) No sound or distorted sound
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> Check items 3, 5, 8 and 9, and OUTPUT check items.
Test Point
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Note : Use the standard AC adapter PA-130 or PA-130A for check operation.
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