Yamaha DX21 - TEST 4: A;D and Footswitch Check

DX21
TEST 4: A/D and Footswitch check
For this test you operate the controls as indicated by
the LCD display. Once the control is operated
throughout its range LCD display will indicate the
next control that to be checked. If a control or
controller is malfunctioning then the test will not
advance to the next control. It should also be noted
that all controls and controllers must be checked for
the Test Routine continue on to the next test. This
test checks the following controls and controllers
listed below:
1. The PITCH BEND control
2. The MOD. WHEEL control
3. The DATA ENTRY control
4. The FOOT VOL. controller
5. The BREATH controller
6. The SUSTAIN footswitch
7. The PORTAMENTO footswitch
The test routine automatically increments to the
TEST 5, once all checks have been completed.
TEST 5: Keyboard check
Test 5 checks the keyboard contacts. The LCD dis¬
plays the keys to be depressed and once the key is
depressed and released the LCD will indicate the next
key to be depressed. No error message occurs when a
key contact is bad or a key is depressed in error. Once
all key contacts have been verified by depressing and
releasing the appropriate keys, the Test Routine
advances to TEST 6, the Panel Switch check.
TEST 6: Panel Switch check
For this test, press the switch indicated by the LCD
display. The numbering order of the panel switch
sequence is shown below.
After the panel switch test has been completed, the
test routine automatically exits the Test Mode and
the unit returns to its normal operating mode.
4
DX21