DTX-MULTI 12
34
35. RAM
[Test Code]
A0 23 00
[Initial indication]
35:RAM
Press [ENTER]
[Test contents]
Executes Write/Read/Verify test of the SDRAM.
Specifi c data is written on specifi c address group, then the data
is read and is compared with the written data.
All address lines and all data lines used by RAM are used for
the test.
[Test method]
Press the [ENTER] button to execute the test.
[Check item]
Check the test result indicated on the LCD.
[Judgment indication]
In case of OK:
35:RAM
OK
In case of NG:
35:RAM
NG
[MIDI code output for judgment result]
OK: A0 23 02
NG: A0 23 03
[How to quit test]
Press the [+/INC] button to proceed to next test.
36. Trig(S) IN04, 37. Trig(S) IN05,
38. Trig(S) IN06, 39. Trig(S) IN07,
40. Trig(S) IN08, 41. Trig(S) IN09
[Test Code]
36. A0 24 00 37. A0 25 00 38. A0 26 00
39. A0 27 00 40. A0 28 00 41. A0 29 00
[Initial indication (Example)]
36:Trig(S) IN04
Press [ENTER]
[Test contents]
Add signal looped from the [PHONES] terminal to the JK
circuit board PH connector (CN305.310) and check the
followings:
· The inputted signal is inputted to the CPU at the proper value
· No signal is leaked to other inputs
· Attenuation value of waveform is normal
The loopback destination of each test is:
36. Trig(S) IN04: CN305
37. Trig(S) IN05: CN306
38. Trig(S) IN06: CN307
39. Trig(S) IN07: CN308
40. Trig(S) IN08: CN309
41. Trig(S) IN09: CN310
* Output waveform from [PHONES] terminal is sine
wave with frequency of 4 kHz, +12.0 dBu (load of
10 kΩ)
* This test is executed only during circuit board
check.
[Test method]
Press the [ENTER] button to execute the test.
The following screen (example) will appear when the test is
started.
36:Trig(S) IN04
Waiting...
Set the [PHONES] volume to the MAX. Input the signal
outputted from the [PHONES] terminal to the CN305 to
CN310.
[Check item]
Check the test result indicated on the LCD.
[Judgment indication (Example)]
In case of OK:
36:Trig(S) IN04
OK
In case of NG:
36:Trig(S) IN04
NG tooHi:XX
too Hi XX:
NG due to input level of XX
36:Trig(S) IN04
NG XtIN ○○:XX
XtIN○○XX:
NG due to signal leak of XX to the channel ○○.
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TEL 13942296513 QQ 376315150 892498299
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