Yamaha DTXPRESS IV Service Manual page 20

DTXPRESS
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C-01. ROM
[Test code]
01
[Initial indication]
1 ROM
[Test content]
Read the P2ROM data and verify it.
[Test method]
Press the [SAVE/ENTER] key to execute the test.
[Check item]
Check the LCD test result.
(When the result is OK, testing proceeds to the next test and so
it is not possible to check the result by LCD indication.)
[Indication of judgment result]
When the result is OK
C-02. FLASH test is started automatically.
When the result is NG (example)
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1 ROM
FAIL 9110
[Content of FAIL judgment]
None
[MIDI code output of judgment result]
OK A0 01 02
FAIL A0 01 03
[Completing the test]
When the result is OK, testing proceeds to the next test.
For the procedure when the test is judged as FAIL before its
completion, refer to "B. Carrying on the test"
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C-02. FLASH
[Test code]
02
[Initial indication]
2 FLASH
[Test content]
Check the manufacture code and device ID of FLASH ROM.
[Test method]
Press the [SAVE/ENTER] key to execute the test.
Execute C-01. ROM test and if its result is OK, the test is started
automatically.
[Check item]
Check the LCD test result.
(When the result is OK, testing proceeds to the next test and so
it is not possible to check the result by LCD indication.)
[Indication of judgment result]
When the result is OK
C-03. SRAM test is started automatically.
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3 6 7 1 3 1 5
When the result is NG
2 FLASH
FAIL
[Content of FAIL judgment]
None
[MIDI code output of judgment result]
OK A0 02 02
FAIL A0 02 03
[Completing the test]
When the result is OK, testing proceeds to the next test.
For the procedure when the test is judged as FAIL before its
completion, refer to "B. Carrying on the test"
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