Yamaha DTXT2S, Service Manual

Page: 34 / 95

DTXTREME IIS
34
B. CARRYING ON THE TEST
1. After setting each parameter in "A. TEST ENTRY",
press the "ENTER/ YES" key. The following appears.
[Indication screen]
Use this indication as a [Test No. Selection Screen].
If using [
▲
] and [
▼
], or the leftmost encoder, the test
No. is selected and the [ENTER/ YES] key is pressed,
the test is automatically carried on in test No. sequence
starting with the selected test. In case of any failure,
[FAIL] appears and the test stops.
2. Carrying on the test which is judged to be FAIL.
For each test which is judged to be FAIL, press the
[EXIT/ NO] key and the test No. selection screen appears.
C-01. MAIN ROM
[Initial indication]
[Test content]
Read data from MAIN ROM and perform Verify Check.
[Test method]
Perform the test.
[Check item]
Check LCD test results.
[Indication of judgment result]
In case of OK
In case of NG
Checksum in case of XXXX
None
[Content of FAIL judgment]
[Completing the test]
OK: The test will proceed to the next one automatically.
NG: For handling the FAIL judgment,
see "B. CARRYING ON THE TEST".
C- 02. SUB ROM
[Initial indication]
[Contend of test]
Read data from SUB ROM and perform Verify Check.
[Test method]
Perform the test.
[Check item]
Check LCD test results.
[Indication of judgment result]
In case of OK
In case of NG
Checksum in case of XXXX
[Content of FAIL judgment]
None
[Completing the test]
OK: The test will proceed to the next one automatically.
C- 03. MAIN SRAM
[Initial indication]
[Test content]
WRITE/ READ data to MAIN SRAM (IC21) and
perform Verify Check.
[Test method]
Perform the test.
[Check item]
Check LCD test results.
[Indication of judgment result]
In case of OK
In case of NG
[Content of FAIL judgment]
None
[Completing the test]
OK: The test will proceed to the next one automatically.
1 MAIN ROM
2 SUB ROM
2 SUB ROM
OK
2 SUB ROM
FAIL (XXXX)
3 MAIN SRAM
3 MAIN SRAM
OK
3 MAIN SRAM
FAIL
1 MAIN ROM
1 MAIN ROM
OK
1 MAIN ROM
FAIL csum (XXXX)
NG: For handling the FAIL judgment,
see "B. CARRYING ON THE TEST".
NG: For handling the FAIL judgment,
see "B. CARRYING ON THE TEST".