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Jun. 2010
Verifying the Version
1.
Turn all controls all the way counterclockwise.
2.
Hold down the pedal and insert a 1/4-inch stereo phone plug into the
INPUT jack.
The power comes on and the CHECK LED lights up.
After approximately 2 seconds, the CHECK LED flashes, and the number
of flashes indicates the version.
Examples:
1 flash:
Version 1.00
2 flashes: Version 1.01
3 flashes: Version 1.02
3.
Release the pedal.
After the version display, the unit automatically changes to the Test
Mode.
Data Backup and Restore
Operations
This product cannot save user data. Backing up user data during servicing is
not required.
Performing a Factory Reset
This product has no factory-reset feature.
Updating the System
A system update cannot be performed for this product. If an update is
required, replace with an updated circuit board. Updates can be accomplished
only at the factory.
Operation Test
Items Required
• AC adaptor (PSA-series device)
• Amp-equipped monitor speaker x 1
• Signal generator x 1
• Oscilloscope x 1
• Noise meter x 1
• Stabilized power supply x 1
• Ammeter x 1
• 47-kΩ dummy plug (1/4-inch mono phone type) x 1
Inspection Items
1. Measurement of Current Consumption (p. 12)
2. Volume and AD/DA Test (p. 12)
3. Noise Test (p. 12)
4. MODE Test (p. 13)
5. DIRECT OUT Test (p. 13)
6. BYPASS Test (p. 13)
7. LED and Battery Operation Test (p. 13)
The tests just described can safely be carried out in any sequence. Also, some
items involve testing while in the Test Mode, and others involve testing in the
normal usage state. For detailed information, refer to the procedures for the
respective test items described later in this document.
Entering the Test Mode and Verifying the
Version
1.
Turn all controls all the way counterclockwise.
2.
Hold down the pedal and insert a 1/4-inch mono phone plug into the
INPUT jack.
The power comes on and the CHECK LED lights up.
After approximately 2 seconds, the CHECK LED flashes, and the number
of flashes indicates the version.
Examples:
1 flash:
Version 1.00
2 flashes: Version 1.01
3 flashes: Version 1.02
3.
Release the pedal.
After the version display, the unit automatically changes to the Test
Mode.
Quitting the Test Mode
After entering the Test Mode and displaying the version, depress the pedal.
Alternatively, disconnect the plug from the INPUT jack to switch off the
power.
DD-3(T)
11
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