Roland JD-XA Service Notes page 26

Jul. 2015
2. Device
Various devices are checked automatically.
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|S NOR Flash :---|
|S SDRAM-L :---|
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1. SSC NOR Flash
2. SSC SDRAM-L
3. SSC SDRAM-H
4. SSC DSP
5. SSC DSP RAM
6. SSC WAVE ROM
7. SSC USB MEMORY
8. ESC2A Serial Flash
9. ESC2A SDRAM
10. ESC2A DSP
11. ESC2A Serial I/O (ESC2A <-> ESC2E)
12. ESC2A Keyboard CPU (FM3 <-> ESC2A)
13. ESC2E Serial Flash
14. ESC2E SDRAM
15. ESC2E DSP
16. ESC2E DSP RAM
17. ESC2E Serial I/O (ESC2E <-> SSC)
18. WAVE CHECK SUM
The test result (OK or *NG (not OK)) is displayed next to the
corresponding device.
When all devices become OK, Remove USB Mem. is displayed. When
the USB memory device is disconnected, after several seconds, execution
automatically advances to the next test item.
* The check results for the entire Wave ROM area are not displayed here. Checking
starts here and continues in the background while the other tests are executed.
For the test results, check 18. Wave ROM (p. 30).
3. USB Over Current
This test is not required in servicing.
Use Shift + to advance to the next test item.
4. MIDI
This verifies the operation of the MIDI IN and OUT connectors.
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|MIDI
|
+————————————————+
1.
Using the MIDI cable, connect the MIDI IN and MIDI OUT connectors.
The message Connect is displayed.
2.
Detach the MIDI cable.
Disconnect is displayed, and execution automatically advances to the
next test item.
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5. ROTARY SW
This verifies the rotary switch operation.
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|ROTARY SW
|1.LFO : <<< 24|
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1.
Turn the rotary switch of LFO counterclockwise.
Value on the screen decreases from 24 to 0 in sequence.
2.
Turn the rotary switch of LFO clockwise.
Value on the screen increases from 0 to 23, and then OK is displayed.
3.
For the rotary switches of A-OSC1/D-OSC, A-OSC2 and FILTER, execute
steps 1 and 2.
When OK is displayed for the rotary switch of FILTER, execution
automatically advances to the next test item.
6. Switch/LED
This verifies the operations of LED-equipped switches.
+————————————————+
| 1.A_PART_SEL1
| 1/102
+————————————————+
Press the buttons which LEDs light up in sequence and verify that the
value displayed on the screen increases.
* The following buttons have 2-color LEDs. Verify that pressing once makes the
button change color, and pressing again makes it go dark.
• ANALOG PART 01–04
• DIGITAL PART 01–04
• PARTIAL 01–03
• 01 A–16 P
• PATTERN SEQ Play
• TEMPO Tap
When all buttons have been pressed, execution automatically advances to
the next test item.
7. Switch
This verifies the operations of switches that have no LED.
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| 1.OSC1_VARI
| 1/11
+————————————————+
Press the following buttons in sequence. The name of buttons are also
displayed on the screen.
A-OSC1/D-OSC Variation,
PITCH ENV Select,
MIXIER AUX Select,
Filter Variation,
, , -, +,
Shift, Exit, Enter
When all buttons have been pressed, execution automatically advances to
the next test item.
JD-XA
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