Yamaha Silent Piano GPS-SH Series, Maintenance Handbook

Page: 15 / 24

6. Test Mode
[Start ‐ up]
[REC] + [PLAY] + POWER ON
[29C#], [33F], [36G#] + POWER ON
[Testing items]
Key sensor test (GP/UP common)
Hammer sensor test (Grand Piano)
Shift pedal sensor test (Grand Piano)
Soft pedal sensor test (Upright Piano)
Sosutenuto pedal sensor test (Grand Piano)
Damper pedal sensor test (GP/UP common)
Piano type selection (GP/UP common)
Leave test mode (GP/UP common)
* For additional information about the rest of testing item, please refer to Service Manual.
[Test mode operation procedure]
1) Start ‐ up the test mode.
2) Push the [+/YES] or [ ‐ /NO] button to select desired testing item.
3) Push the [PLAY] button to start ‐ up the selected testing item.
4) Execute the selected testing item according to the procedure.
5) Push the [PLAY] button to terminate the testing item and return to step 2.
6) Turn the power off or select "t49" to terminate the test mode.
Display
Test No.
Testing item
t02
t04
t07
Mode
Method Operation
Test mode
Panel button
Keyboards
t06
t47
t05
t49
…
Upright Piano Grand Piano
Execute the
selected testing
item
Complete test
[+/YES]
[PLAY]
[PLAY]
[+/YES]
[+/YES]
[+/YES]
[ ‐ /NO]
[ ‐ /NO]
[ ‐ /NO]
[PLAY]
Test mode is a program for inspecting the operation of the electric system . The test mode is equipped
with test items that check the detection position of the key sensor, hammer sensor and pedal sensor.
The test mode can be executed by pushing buttons on a control panel or by pressing some keys and
power button.
Please use headphones with an appropriate volume level when you check the buzzer sound.
Inspection by test mode shall be required in the following case:
・
If the piano performance is not good enough in Silent mode .
Test mode consists of 49 testing items. The testing items that piano technician shall chiefly
utilize in the field are listed below.
t49
Test No.
Test mode
Test No.
[Turn the power off]
‐ 15 ‐