Yamaha Motif 8 Service Manual

61 MOTIF6 / MOTIF7 / MOTIF8
Measuring Requirements
When testing the unit in the MANUAL or AUTO mode,
the following Instruments and jigs are required:
Instruments: Frequency Counter, Oscilloscope, Level
Indicator (JIS-C curve), Distortion Meter
(Flat), Oscillometer, Keyboard Amplifier,
PLG100-VH, etc.
Jigs: MIDI Cable, Proprietary Expansion Board, etc.
A. Entering Test Mode
Push
Turn on power with the [REMOTE CONTROL ON/OFF]
and [REC] buttons pressed and held. The following screen
appears. Press [ENTER]...

62MOTIF6 / MOTIF7 / MOTIF8
T03: LED Check
Initial Screen:
        //// MOTIFx Test Program ////
  03:LED         :Press [ENTER]
Description:
This test turns LED’s in sequence, roughly every 0.5 sec.
Make sure the LED’s normally operate and glow consis-
tently.
Procedure:
Turn all the LED’s on the unit in sequence following the
instructions below to make sure they all light up:
        //// MOTIFx Test Program ////
  03:LED         :Checking (xxxxxxx)
xxxxxxx : LED Name
When the LED’s stay on, sound a...

63 MOTIF6 / MOTIF7 / MOTIF8
11 →12 →13 →
14 →15 →16 →
MUTE
* Only MOTIF6, 7
Check Item:
Make sure all the switches operate normal.
Display of Test Conclusion:
OK
        //// MOTIFx Test Program ////
 04:Panel SW    :OK
NG        //// MOTIFx Test Program ////
  04:Panel SW    :Press [xxxxxxx]  NG
Ending Process:
If all the switches are successfully tested, OK appears on
the LCD, the test ends and returns to the item select status.
For NG determined on the way of the test, see “C.
Procedure for NG”.
∗...

64MOTIF6 / MOTIF7 / MOTIF8
        //// MOTIFx Test Program ////
  07:Slider      :
     Slider-1    : xxx
     Slider-2    : xxx
     Slider-3    : xxx
     Slider-4    :OK
yyy : Target value
xxx : Current value
Display of Test Conclusion:
OK
        //// MOTIFx Test Program ////
  07:Slider      :OK
     Slider-1    :OK
     Slider-2    :OK
     Slider-3    :OK
     Slider-4    :OK
NG No display
∗
 For NG determined on the way of the test, see “C.
Procedure for NG”.
T08: 1KeyOn Check
Initial Screen:...

65 MOTIF6 / MOTIF7 / MOTIF8
Display of Test Conclusion:
OK
        //// MOTIFx Test Program ////
  09:Keyboard + AT :OK
     Scaling     :OK
     After Touch :OK
NG No display
∗
 For NG determined on the way of the test, see “C.
Procedure for NG”.
T10: PB, MW, BC Check
Connect the breath controller before starting this test.
Initial Screen:
        //// MOTIFx Test Program ////
  10:PB,MW,BC    :Press [ENTER]
Description:
Make sure “Pitch Bend, “Modulation Wheel” and “Breath
Controller” operate...

66MOTIF6 / MOTIF7 / MOTIF8
Check Item:
Make sure IN and OUT are OK, and THRU outputs a test
pattern.
Display of Test Conclusion:
OK
        //// MOTIFx Test Program ////
  12:MIDI :OK
NG        //// MOTIFx Test Program ////
  12:MIDI :NG
If an unexpected data is received:
        //// MOTIFx Test Program ////
  12:MIDI :NG             TIME OUT
If the reception does not complete within a certain time:
Ending Process:
The test ends after displaying the test conclusion and
enters the item selection status....

67 MOTIF6 / MOTIF7 / MOTIF8
T15: 1 kHz OUTPUT R Check
Initial Screen:
        //// MOTIFx Test Program ////
  15:OUTPUT-R    :Press [ENTER]
Procedure:
Insert plugs into OUTPUT-L, OUTPUT-R, Assignable-L,
Assignable-R, PHONES (L) and PHONES (R) to monitor
the frequencies, output waveforms and output levels using
a frequency counter, oscilloscope and level indicator (with
JIS_C filters).
Set Master Volume to max.
When sounding, the LCD displays as follows:
        //// MOTIFx Test Program ////
  15:OUTPUT-R...

68MOTIF6 / MOTIF7 / MOTIF8
T18: CARD (WRITE/READ) Check
Initial Screen:
        //// MOTIFx Test Program ////
  18:Card        :Press [ENTER]
Description:
Make sure the Smart Media is protected.
Checks the Format, Write, Read and Verify on the Smart
Media.
Make sure the Smart Media is removable.
Procedure:
First, insert a protected Smart Media into the slot and run
the test.
Then, insert a not-protected Smart Media into the slot and
run the test.
Run the test without a Smart Media inserted.
Check Item:...

69 MOTIF6 / MOTIF7 / MOTIF8
Error code :
NG_BOARD: Board other than VH is inserted.
NO_BOARD: No board (No board is inserted)
MIDI: MIDI LINE faulty
Ending Process:
Press [EXIT] button once to stop sounding, twice to
determine OK or NG or three times to enter the status
waiting for a test number.
T21: Plug-In 2 Check
Initial Screen:
        //// MOTIFx Test Program ////
  21:PLG2        :Press [ENTER]
Description:
Checks for connection at Plug-in Slot 2, sending/reception
through Control Line, MIDI Line...

70MOTIF6 / MOTIF7 / MOTIF8
Procedure:
Loop between the AIEB1 Digital input and output to sound
a sine wave to the Digital output.
Make sure the following level outputs are sent out from the
ChStatus, and Outputs R and L.
        //// MOTIFx Test Program ////
  23:Digital In  :ON
     Ch Status   :xx
xx : OK/NG
Check Item:
Ch Status: OK/NG
OUTPUT-L: Sine wave, 1 kHz ± 5 Hz, + 1.0 ± 2 dBm
(loading, 10 kΩ; distortion factor, 0.1% or less)
Display of Test Conclusion:
NG
        //// MOTIFx Test Program ////...