Yamaha spx2000 Service Manual page 40

SPX2000
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10. PANEL LED test
Whether the LEDs on the panel light up in the specified
order or not is checked visually.
Example of execution screen.
PANEL LED
LEDs light up in the lighting order as specified.
All LEDs light up at the end or the lighting order.
If LEDs light properly, press the [NEXT] switch but if
not press the [BACK] switch.
"OK" appears on the screen when the PANEL LED test
ends with a satisfactory result and "NG" when it ends
with an abnormality detected.
Caution
1) For the lighting order, refer to Fig. 1.
2) Only the meter L/R segments light up at the same time.
All the others light up independently.
3) The 7 seg LEDs light up in the order of 0, 1, 2 on the
left and 0, 1, 2 on the right.
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LED lighting order: Fig. 1
11. PANEL ALL LED test
When only red LEDs light up, check that no different
color exists.
When only green LEDs light up, check that no different
color exists.
When only orange LEDs light up, check that no different
color exists.
Example of execution screen
PANEL ALL LED
"RED LEDs" appears on the screen and all red LEDs
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light up.
"GREEN LEDs" appears on the screen and all red LEDs
light up.
.
"ORANGE LEDs" appears on the screen and all red
LEDs light up.
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If LEDs light up by each color correctly, press the
[NEXT] switch but if not, press the [BACK] switch to
make this test end.
"OK" appears on the screen when the PANEL ALL LED
test ends with satisfactory test result but "NG" when it
ends with an abnormality detected.
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