Test Mode - Boss Dr. Rhythm DR-3 Service Notes

Feb.2003

TEST MODE

Required equipment
1.
AC Adaptor PSA Series
2.
Foot Switch x2 (such as an FS-5U)
3.
Foot Switch Cable (Roland PCS-31)
(1/4inch Phone Plug (stereo)-1/4inch Phone Plug (mono) x 2)
4.
MIDI keyboard (such as an PC-300)
5.
MIDI Cable
6.
Oscilloscope
7.
Noise Meter (WEIHGT JIS-A or IHF-A)
8.
Headphone
9.
AA-size dry-cell Battery x6
Prior Preparations for Test Mode
fig.test0-0
White Red
PCS-31
MIDI IN
MIDI OUT MIDI KEYBOARD
1.
Connect the AC adapter to DC IN on the DR-3.
2.
Use a MIDI cable to connection MIDI OUT on a MIDI device capable of
NOTE ON output to MIDI IN on the DR-3.
3.
Using connector cords (PCS-31), connect foot switches (FS-5U x 2) to the
FOOT SW jacks on the DR-3.
Set the [POLARITY SW] on each FS-5U to JACK.
4.
Make the following settings on the connected device.
• Oscilloscope settings: VOLTS 1 V/DIV, TIMES 0.2 S/DIV
• Noise meter setting: WEIGHT JIS-A or IHF-A
• DR-3 VOLUME setting: MAX
Test items
1.
SRAM Check
2.
FLASH Check
3.
GA Check
4.
MR3 Check
5.
BATTERY Check
6.
MIDI Check
7.
LED Check
8.
LCD Check
9.
Encorder Check
6
AC Adaptor
10. FOOT SW Check
11. PIEZO Check
12. SQUAEW Check
13. SINE Check
14. MUTE Check
15. Ending the Test Mode
16. Checks for Normal Operation
17. Residual-noise Check
18. Battery-operation Check
fig.test0-1
Starting the Test Program
Hold down the [VARIATION PTN] and [VARIATION MUTE] buttons and
switch on the power on the DR-3.
Continue to hold down the buttons until the following display appears on the
LCD screen.
fig.test0-2
A = Version number of the mask CPU (IC7)
B = Version number of the firmware written to the flash memory (IC8)
Check the following:
• The LCD backlight must light up (upper row; four locations).
• LED brightness must be without fluctuation.
Turning the encoder to select the test item.
1.RAM Check
1.
Press the [ENTER] button.
If there is no problem, the display will indicate "OK."
fig.test1-2
Press