Kurzweil K2500 - PERFORMANCE GUIDE REV F PART NUMBER 910252 CHAP 9 Maintenance And Troubleshooting Manual

Kurzweil K2500 - PERFORMANCE GUIDE REV F PART NUMBER 910252 CHAP 9 Maintenance And Troubleshooting Manual

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Chapter 9
Maintenance and Troubleshooting
Preventitive Maintenance
With a modicum of care, your K2500 will give you years of use and enjoyment. There are just a
few important points to keep in mind.
Proper installation is essential to the health and welfare of your K2500. It should be mounted in
a standard 19-inch MIDI rack, or should rest on a hard flat surface. In this case it must rest on its
rubber feet, and NOT on the bottom panel. NEVER block the ventilation openings on the rear
panel; doing so can cause overheating that will seriously damage your K2500! To provide
adequate ventilation, the rear panel should be at least four inches from any vertical surface. If
you install an internal hard disk, the ventilation opening on the underside of the K2500 must
remain unobstructed so the cooling fan can operate properly. Care should be taken to minimize
the amount of dust in the environment.
There are no user-serviceable parts in the K2500. Under no circumstances should you attempt
to remove any panels (except for battery replacement). If you attempt to open your K2500,
you'll risk electric shock, and you'll void your product warranty.

Cleaning your K2500

It's a good idea to remove dust from your K2500 occasionally. You may also want to remove
fingerprints. You can clean the K2500's front panel with a soft damp cloth, and use a mild soap
or detergent. Never use strong cleaners or solvents, and never spray anything on the front
panel or into the ventilation holes! Any cleaners you may want to use should be applied to your
cleaning cloth; you can then carefully wipe the surfaces of the K2500.

Floppy Disk Drive Maintenance

As long as you're reasonably careful to keep dirt and dust out of the floppy disk drive, you
shouldn't have any problems. If, however, you start to experience errors or failures in loading
or saving, it may be due to dirt in the floppy drive mechanism. See your dealer for information
regarding products and techniques for floppy drive cleaning.

Battery selection and Replacement

The K2500 uses batteries to preserve its internal memory when the power is turned off. The
original batteries should last up to two years before they need replacing. Replacement is
necessary when the LCD says "BATTERY VOLTAGE IS LOW" during power-up, or when you
notice that the LEDs flash three times instead of once during power-up. Once these warnings
begin to occur, the batteries should be replaced within a couple of weeks to ensure continued
safety of your RAM objects.
To replace the batteries, you'll need access to the rear panel. Remove the battery compartment
cover, which is located at the lower right corner of the rear panel as you face it. You may wish to
use a small screwdriver. Replace the batteries with three high quality AA size "heavy duty" or
alkaline batteries. A capacitor will keep the memory alive for about 30 seconds while changing
the batteries, so don't remove the old ones until the new ones are available. Alternatively, it is
permissible to have the power cable plugged in and the power on while changing the batteries,
in which case memory will be retained as long as power is on. Be sure to insert the new
Maintenance and Troubleshooting
Battery selection and Replacement
9-1

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Summary of Contents for Kurzweil K2500 - PERFORMANCE GUIDE REV F PART NUMBER 910252 CHAP 9

  • Page 1 Maintenance and Troubleshooting Battery selection and Replacement Chapter 9 Maintenance and Troubleshooting Preventitive Maintenance With a modicum of care, your K2500 will give you years of use and enjoyment. There are just a few important points to keep in mind. Proper installation is essential to the health and welfare of your K2500.
  • Page 2 Maintenance and Troubleshooting User-callable Diagnostics batteries in the proper direction (the positive terminals should be pointing out). Incorrect insertion won’t damage anything but the memory won’t receive any power from the batteries. Most quality brand-name batteries now have “sell by” dates printed on their package. Carbon- zinc batteries will last for at least a year after installation while alkaline batteries should last for at least 2 years provided they are installed before the date on the package.
  • Page 3 Maintenance and Troubleshooting Maximizing Music and Minimizing Noise adjustments, it’s best to increase the output level digitally (by editing programs) instead of increasing the gain of your amplifier or mixing board. This is because a digital gain increase is completely noiseless whereas an analog increase will proportionally increase hum and noise from the connecting cabling and from the K2500 itself.
  • Page 4: Troubleshooting

    Maintenance and Troubleshooting Power Problems and Solutions Finally, magnetic fields can be a source of interference. The area surrounding the K2500’s Alpha Wheel and alphanumeric pad is sensitive to fields from large transformers in power amps; keep them at least a foot away from the K2500’s front panel. Smaller gear like drum machines and hardware sequencers can also cause interference.
  • Page 5 Maintenance and Troubleshooting Troubleshooting Make sure your audio cables are fully connected to the K2500 and to your sound system. You may want to switch your audio cables, unless you’re sure they’re functioning properly. Make sure that your MIDI connections are correct, and that your MIDI cables are functional. You should have at least one MIDI cable, which should be connected from the MIDI Out port of your MIDI controller to the MIDI In port of the K2500.
  • Page 6 Maintenance and Troubleshooting Troubleshooting Left MIX output seems louder than Right MIX output when used individually. This is normal. When a cable is plugged into the left MIX output alone, both the left AND the right audio signals are routed to the jack. When a cable is plugged into right MIX output alone, only the right channel audio signal is heard.

This manual is also suitable for:

K2500

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