21
DR-880
4-4. PATTERN check
fig.lcdencordercheck4.eps
Check the text encircled in the illustration.
[SONGPATTERN PRESET USER]
Press [BANK].
4-5. PATTERN No. check
fig.lcdencordercheck5.eps
Check the text encircled in the illustration.
[8 8 8]
Press [BANK].
4-6. TEMPO check
fig.lcdencordercheck6.eps
Check the text encircled in the illustration.
[8 8 8]
Press [BANK].
4-7. KEY check
fig.lcdencordercheck7.eps
Check the text encircled in the illustration.
[8 1 #b m]
Press [BANK].
4-8. All Lit check
fig.lcdencordercheck8.eps
Verify that there is no inconsistency, missing characters, gaps, or light patches
in the LCD.
Press [BANK].
4-9. All Dark check
fig.lcdencordercheck9.eps
Verify that no display elements are lit.
Press [BANK].
4-10. Checkerboard pattern check
fig.lcdencordercheck10.eps
fig.lcdencordercheck11.eps
Verify that the checkerboard pattern is not distorted.
fig.lcdencordercheck12.eps
Drop the rear edge of the unit (marked [] in the illustration) three times from a
height of 5 cm, and verify that there is no abnormality in the display.
Press [BANK] to proceed to the next test item.
Summary of Contents for DR-880
Page 11: ...11 DR 880...
Page 29: ...31 Dec 2004 DR 880 CIRCUIT BOARD MAIN BOARD fig b main1 eps View from components side...
Page 30: ...33 Dec 2004 DR 880 CIRCUIT BOARD MAIN BOARD fig b main2 eps View from foil side...
Page 34: ...41 Dec 2004 DR 880 CIRCUIT BOARD SW fig b sw1 eps View from components side...
Page 35: ...43 Dec 2004 DR 880 CIRCUIT BOARD SW fig b sw2 eps View from foil side...
