Boss RC-30, Service Notes

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16
Mar. 2011 RC-30
3. LED & SW Check
1.
Verify that all LEDs and the 7-segment LED display are dark.
2.
Press each button in the sequence shown in the table below, and verify
that the corresponding LED lights up.
* Pressing LOOP FX TYPE once makes the corresponding LEDs described above
light up in sequence, one at a time.
* Depressing the left pedal once makes the two digits of the 7-segment LED
display light up one segment at a time.
3.
Finally, depress the right pedal to advance to the next test item.
4. VR Test
1.
Verify that 10 is shown on the 7-segment LED display.
2.
Slowly move the TRACK 1 slider from minimum to maximum, and
verify that the reading on the 7-segment LED display changes as shown
below.
10
->
11
->
12
->
13
->
14
->
15
->
16
->
17
->
18
* When the slider is at center, 14 is displayed.
When the values from
MIN
to
MAX
have been detected correctly,
execution automatically advances to the next VR (potentiometer) test.
3.
Verify that
20
is shown on the 7-segment LED display.
4.
Slowly move the
TRACK 2
slider from minimum to maximum, and
verify that the reading on the 7-segment LED display changes as shown
below.
20 -> 21 -> 22 -> 23 -> 24 -> 25 -> 26 -> 27 -> 28
* When the slider is at center,
24
is displayed.
When the values from MIN to MAX have been detected correctly,
execution automatically advances to the next VR (potentiometer) test.
5.
Verify that r0 is shown on the 7-segment LED display.
6.
Slowly turn the RHYTHM OUTPUT LEVEL control from MIN to MAX ,
and verify that the reading on the 7-segment LED display changes as
shown below.
r0
->
r1
->
r2
->
r3
->
r4
->
r5
->
r6
->
r7
->
r8
* When the control is at center, r4 is displayed.
When the values from
MIN
to
MAX
have been detected correctly,
execution automatically advances to the next test item.
5. CTL PEDAL Test
1.
Verify that F1 is shown on the 7-segment LED display.
2.
Depress the FS-5U connected to the FOOT SW jack (tip end).
The reading on the 7-segment LED display changes to
F2
.
3.
Depress the other FS-5U pedal (ring end).
The reading on the 7-segment LED display changes to FJ .
4.
Detach the plug from the FOOT SW jack.
When correct detection occurs, execution automatically advances to the
next test item.
6. USB Test
1.
Verify that US is shown on the 7-segment LED display.
2.
Disconnect the USB cable.
When correct detection occurs, execution automatically advances to the
next test item.
7. DA Test (A1)
1.
Verify that A1 is shown on the 7-segment LED display.
2.
Make the following settings on the oscilloscope.
Channel 1 (
OUTPUT L
): 200 mV/DIV, 1.00 ms/DIV
Channel 2 ( OUTPUT R ): 200 mV/DIV, 1.00 ms/DIV
Coupling: DC
The mute circuit is repeatedly switched on and off automatically.
3.
Verify the waveforms on channel 1 and channel 2. Also verify that the
peak value is at
700 to 800 mVp-p .
fig.audio-1.eps
fig.audio-2.eps
Button Illuminated LED
1 LOOP FX TYPE BEND DOWN
STEP PHASER
SWEEP FILTER
TEMPO DELAY
Lo-Fi
2 LOOP FX ON/OFF LOOP FX ON/OFF
3 TRACK 1 SELECT TRACK 1 SELECT
4 TRACK 2 SELECT TRACK 2 SELECT
5 WRITE TRACK 1 STATUS
6 DELETE TRACK 2 STATUS
7 RHYTHM TYPE RHYTHM TYPE
8 RHYTHM ON/OFF RHYTHM ON/OFF
9 RHYTHM TAP TEMPO RHYTHM TAP TEMPO (red)
10 REC
11 PLAY
12 Left pedal 7-segment LED display