Roland RS-70 Service Notes page 16

May 2003
4. SOUND Test
• Connect monitor speakers to OUTPUT L/R, and connect headphones.
(L-ch Test)
L-ch Test.eps
SOUND Test:
Left >>>>>
• Verify that a sine wave is output from Output-L and the left side of the
headphones.
• Press the [ENTER] button to proceed to the R-ch test.
(R-ch Test)
R-ch Test.eps
SOUND Test:
<<<< Right
• Verify that a triangle wave is output from Output-R and the right side of
the headphones.
• Press the [ENTER] button to proceed to the L/R-ch test.
(L/R-ch Test)
L/R-ch Test.eps
SOUND Test:
Left >>>>><<<< Right
• Verify that a sine wave is output from Output-L and the left side of the
headphones, and a triangle wave from Output-R and the right side of the
headphones.
• Press the [ENTER] button to proceed to the next test.
5. LCD Test
• Verify that all pixels of the LCD are lit.
• Press the [ENTER] to proceed to the "all LCD unlit" test.
• Verify that all pixels of the LCD are unlit.
• Press the [ENTER] button to proceed to the LCD Contrast Test.
(LCD Contrast Test)
LCD Contrast Test.eps
LCD Test:
LCD Contrast: 5
• Verify that pressing (and holding down) the [VALUE+] button /
[VALUE-] button will adjust the contrast.
• The contrast value is displayed in the LCD.
• Press the [ENTER] button to proceed to the next test.
6. A/D Test1 (Bender, Modulation)
• This checks the operation of the bender and modulation.
• Make sure that the bender is upright (i.e., released) when you enter this
test.
(This is because the A/D value is read as the central voltage when you
enter this test.)
A/D Test 1.eps
A/D Test 1:
BEND:
• Move the Bender fully left; a click will sound if the value of -128 is
reached.
• Move the Bender fully right; a click will sound if the value of 127 is
reached.
• When both left and right tests are completed, the display will indicate
OK.
• Move the Modulation all the way away from yourself; if the value of 127
is reached, a click will sound.
• Return the modulation lever toward yourself; if a value of 0 is reached, a
click will sound, the display will indicate OK, and you will proceed to
the next test.
16
0 MOD: 0
(The OK result will not appear unless you perform the tests in the order
of Bender left, Bender right, and Modulation.)
7. A/D Test2 (Control Knob)
A/D Test 2.eps
A/D A--- D--- R---
Tst2: C--- R---
A: ATTACK or BALANCE
D: DECAY or RATE
R: RELEASE or DEPTH
C: CUTOFF
R: RESONANCE
• Perform this test in the order of A, D, R (RELEASE), C, R
(RESONANCE).
• Turn the knob fully left; a click will sound if 0 is reached.
• Turn the knob fully right; a click will sound if 127 is reached.
• Set the knob to the center; if 63/64 is reached, a click will sound and the
OK indication will appear.
• If all knobs are OK, you will automatically proceed to the next test.
8. A/D Test3 (Hold Pedal, Expression
Pedal)
A/D Test 3.eps
A/D Test 3:
HOLD:
• Connect a Hold pedal to the rear panel HOLD jack, and connect an
Expression pedal to the rear panel CONTROL jack.
• Press the Hold pedal; a click will sound when the display indicates 127.
• Release the Hold pedal; a click will sound and the display will indicate
OK.
• Advance the Expression pedal; a click will sound when the display
indicates 127.
• Return the Expression pedal; when the display indicates 0, a click will
sound and OK will appear.
• If both HOLD and CTL are OK, you will automatically proceed to the
next test.
9. D BEAM ADJUSTMENT
D BEAM ADJUSTMENT.eps
D BEAM ADJUSTMENT:
LOW: 0
• This test makes D BEAM settings.
• Before you begin this test, make sure that there are no objects closer than
50 cm above the RS-70. (If there is any such object, the setting cannot be
made correctly.)
• Do not perform the test in direct sunlight.
• Hold your hand 5 cm above the D BEAM and press the [ENTER] button.
If the setting was accomplished correctly, the display will indicate OK.
• Hold your hand 45 cm above the D BEAM and press the [ENTER]
button. If the setting was accomplished correctly, the display will
indicate OK and you will automatically proceed to the next test.
10. D BBEAM Test
D-BEAM Test.eps
D-BEAM Test:
• This tests the operation of the D BEAM.
• Move your hand upward and downward in a range 5~40 cm above the D
0 CTL: 0
HIGH: ---
0