Yamaha RCX40, User Manual

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9
T
roubleshooting
1. Error Messages
1.2 MPB Error Messages
When a hardware error or a software error occurs in the MPB, the following messages are highlighted (shown with
reversed background) on the guideline of the lowest line of the screen.
M P B T R A P ! !
Contents : Undefined operation code was executed.
Cause : A hardware error occurred.
Action
: Replace the MPB.
M P B R e c e i v e E r r o r ! ! ( D a t a R e g i s t e r F u l l )
Contents : Data receive register is full.
Cause : A hardware error occurred.
Action : Replace the MPB.
M P B R e c e i v e E r r o r ! ! ( O v e r r u n E r r o r )
Contents : An overrun occurred while receiving data.
Cause : a. Malfunction occurred due to noise.
b. The cable is broken or disconnected.
c. The connector is not making contact.
Action : 1. Separate equipment away from noise source.
2. Replace the MPB cable.
3. Replace the MPB.
M P B R e c e i v e E r r o r ! ! ( P a r i t y E r r o r )
Contents : Parity error occurred during communication.
Cause : a. Malfunction occurred due to noise.
b. The cable is broken or disconnected.
c. The connector is not making contact.
Action : 1. Separate equipment away from noise source.
2. Replace the MPB cable.
M P B R e c e i v e E r r o r ! ! ( F r a m i n g E r r o r )
Contents
: Framing error occurred during communication.
Cause : Malfunction occurred due to noise.
Action : Separate equipment away from noise source.
M P B R e c e i v e E r r o r ! ! ( B u f f e r O v e r f l o w )
Contents
: Remaining area in receive buffer fell below 1% during commu-
nications.
Cause : a. Large amount of data was sent from the controller.
b. Communication control error.
Action
: 1. Replace the MPB.
2. Replace the controller.