Yamaha CS6x Service Manual page 24

CS6X
T7. KEYBOARD
This test is used to check that the keyboard functions
properly by scaling 88 keys from A1 to C7.
(The above shows the C1 check.)
x x x x: velocity value of the key being pressed
When the key on the LCD display works at a velocity of
0X10 to 0X6F, it is considered normal and that keys note
is output. The test will then proceed to the next key test.
If a wrong key is played, "NG" will appear and that note's
sound will not be output. If a correct key is played after
that, however, the test will proceed to the next key test.
If the test results of all the keys are satisfactory, "OK"
will appear on the LCD display.
DISPLAY OF RESULTS
OK
NG
TEST END
If the test results of all the keys are satisfactory, "OK"
will appear and testing will end.
When the test result is "NG", refer to "C. TEST
S E L E C T I O N W H E N A N E R R O R H A S B E E N
DETECTED".
T8. A. KNOB A-2
Move each knob gradually in the following order: Center
64 (63-65); Left 127 (126-127); Right 0 (0-1); Center 64
(63-65), according to the instruction on the LCD as shown
below. Check that the numbers change sequentially and
that "OK" appears as the result.
Begin the check from the specified knob. The mark [>] will
appear to the left of the value of the knob being checked.
x x x: current knob value
y y y: next target value
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DISPLAY OF RESULTS
OK
NG (No change in the message on the display)
TEST END
The test ends after the results have been displayed.
When the test result is "NG", refer to "C. TEST
S E L E C T I O N W H E N A N E R R O R H A S B E E N
DETECTED".
T10. A. KNOB1-4
Move each knob gradually in the following order: Center
64 (63-65); Left 127 (126-127); Right 0 (0-1); Center 64
(63-65), according to the instruction on the LCD as shown
below. Check that the numbers change sequentially and
that "OK" appears as the result.
Begin the check from the specified knob. The mark [>] will
appear to the left of the value of the knob being checked.
x x x: current knob value
y y y: next target value
DISPLAY OF RESULTS
OK
NG (No change in the message on the display)
TEST END
The test ends after the results have been displayed.
When the test result is "NG", refer to "C. TEST
S E L E C T I O N W H E N A N E R R O R H A S B E E N
DETECTED".
T11. A. KNOB 5-14
Move each knob gradually in the following order: Center
64 (63-65); Left 127 (126-127); Right 0 (0-1); Center 64
(63-65), according to the instruction on the LCD as shown
below. Check that the numbers change sequentially and
that "OK" appears as the result.
Begin the check from the specified knob. The mark [>] will
appear to the left of the value of the knob being checked.