Roland Boss GT-10 Service Notes page 23

Mar. 2008
EXP Pedal Operation-load Test
Testing of Load at Which Movement of the
Expression Pedal Starts
* The power does not need to be on.
1.
Depress the heel of the expression pedal all the way.
2.
Apply a load near the tip of the expression pedal and verify that the pedal
begins to move at a load within the range of 500 to 700 g.
* If the load value is outside the range of 500 to 700 g, adjust by turning BOLT
HEX M6X67 (#H5069003R0). If the bolt has been overtightened, first loosen it,
then adjust by tightening it while measuring the load. Never quit adjustment
while the bolt is in a loosened state.
Muting and Play Mode Test
Testing of Muting Circuitry and Verification of
Product Startup
1.
Using the two cables with 1/4-inch phone plugs, connect the OUTPUT L
and R jacks to the left- and right-channel monitor speakers.
2.
Connect headphones to the PHONES jack.
3.
Verify that no abnormal noise is heard from the monitor speakers or
headphones at the moment the power is switched on.
4.
Verify that the unit starts up in the Play mode.
5.
Verify that no abnormal noise is heard from the monitor speakers or
headphones at the moment the power is switched off.
Current-consumption Test
Verification of Current-consumption Value for DC IN
1.
Hold down [OUTPUT SELECT] and [SYSTEM] and switch on the power.
* Continue holding down these buttons until a screen like the one shown below
appears.
fig.1version.eps
2.
Verify that all LEDs light up.
* For which LEDs light up, refer to step 3 in "0. Starting the Test Mode ."
3.
Connect the cable for measurement of DC IN current consumption to the
DC IN connector on the GT-10, then connect the AC adaptor.
fig.connect-cable.eps
* The photograph mentioned above is connection example of GT-10B, but the
connection method is the same in the case of GT-10.
4.
Verify that the current-consumption value is from 550 to 620 mA.
GT-10
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