DR-880 Test items 2. LED check 1. Device check 2. LED check fig.ledcheck1.eps 3. SW check 4. LCD and encoder check 5. Piezo check 6. Volume check 7. Foot switch check 8. Expression check 9. MIDI and USB check Verify that all LEDs are lit. Lit button LED color 10. Output D/A check 1. EFFECT red: 1 11. AF Gain check 12. Input A/D check 2. LOOP red: 1 3. PLAY green: 2 Entering test mode 4. REC red: 1 While holding down the [KIT] and [DISPLAY] buttons, power-on the DR-880. If the unit is operating correctly, the following display will appear. 5. FAVORITE 1 red: 1 6. FAVORITE 2 red: 1 fig.devicecheck0.eps 7. FAVORITE 3 red: 1 8. FAVORITE 4 red: 1 9. TSC red:
1 fig.ledcheck2.eps fig.devicecheck1.eps Press [ENTER] to begin the first test; 1. Device check. Note any inconsistency in the brightness of the left and right green LEDs. Press [BANK] to proceed to the next test item. Hold down [SHIFT] and press [FAVORITE 1] to return to the preceding test item. Note any inconsistency in the brightness of the various red LEDs. LED/LCD shock test 1. Device check Drop the rear edge of the unit (marked [] in the illustration) three times from a height of 5 cm. Then drop the front edge of the unit (marked O in the illustration) three times from a height of 5 cm. Verify that the LEDs do not go dark, and that there is no change in the LCD display.
• Press [FAVORITE 1] to begin the SDRAM check. Verify that a result of OK appears. • Press [FAVORITE 2] to begin the FLASH check. Verify that a result of OK appears. fig.ledcheck3.eps • Press [FAVORITE 3] to begin the ESP check. Verify that a result of OK appears. • Press [FAVORITE 4] to begin the XP check. Verify that a result of OK appears. Press [BANK] to proceed to the next test item. Press [BANK] to proceed to the next test item. 19