Aug.2001 DR-670 TEST MODE Selecting Test Items You can select the desired test item by rotating the Encoder control. Equipment items 1. Version/Power Voltage fig.1-1 1.AC Adaptor PSA series 2.MIDI Cable 3.Foot Switch x2pcs. (FS-5U x2) 4.Foot Switch Cord PCS-31 (Stereo Phone Jack Phone Jack x2) 5.Oscilloscope 6.Noise Meter 7.Headphones 8.Monitor Amp (Stereo) Test items 1.Version / Power Voltage 2.Lithium Battery 3.Gate Array 4.Mask ROM 5.SRAM 6.Flash Memory 7.MIDI 8.LED 9.LCD 10.Switch Test: Supply 9.0 V ± 0.1 V to TEST DC IN JACK, and check if “T-B” is displayed on the LCD.
11.Pad 12.Encoder The source voltage supplied to the DR-670’s main board (via the CN3 connector with +9V pin 1 and GND pin 2) is measured by the CPU and indicated on the display. 13.Foot SW 14.Output 15.Factory Reset 16.Normal operation check When 9.0V power is supplied to the DC IN jack, the Power Voltage of 750 to 893 (7.50 to 8.93V) is indicated due to a slight voltage drop in the jack board circuit or a device error. 17.PAD test The LCD display shows the “T-B” within this range. 18.Battery operation check Cautions: The Test programs are executed in the flash memory. A precise 9.0-volt reading may not be output due to the PSA series adapter used for the test.
Items 1 to 15 are executed in the Test mode. During these tests, all user memory data are LOST. However, you can perform other tests normally even if power voltage “NG” is shown. Save your data by Bulk Dump before starting the tests. 2. Lithium Battery Preparation fig.2-1e Power supply : Plug the PSA series Power Adapter (optional) into the DR-670. | | | | | | FOOT SW : Connect two FS-5Us via PCS-31. Set the POLARITY switch to “Jack side” on each FS-5U. The Lithium battery voltage is shown. MIDI : Loop the IN and OUT terminals. "OK" (Normal) or "NG" (Low voltage) is displayed. Selecting the Test Mode Operation : You can select another test by rotating the Encoder control.
While holding down [REC] and [6] buttons, turn on the DR-670’s power. Test : Make sure that “OK” is displayed. “OK” means that the current Lithium battery voltage is 2.70 to 3.70V (270 to 370). The power voltage and version A/B will appear on the display. You can select another test by rotating the Encoder control regardless of the voltage test result. 12