Test After Repair Of Beosound 1 - Bang & Olufsen beosound 1 2581 Service Manual

2.10 Test after repair of BeoSound 1, English
#6

Test after repair of BeoSound 1

Reassemble BeoSound 1
Perform an AC leakage test
Connect mains voltage to BeoSound 1
Read-out and clear error codes
Check keyboard functions
Check Radio functions
Check CD functions
Check speakers
Check surfaces and clean these if necessary
For information on the general use of BeoSound 1 please refer to the BeoSound 1
Guide.
- Reassemble BeoSound 1 if not done already. See 11.1 Dissambly/Assembly of
BeoSound 1 if necessary.
Check the antenna terminals and other exposed metal parts for AC leakage.
- Remove the line cable from the AC source (the wall outlet).
- Place a jumper across the two AC plug prongs.
- Use a multi-meter, set for measurements in the Ohm-area.
- Place one lead from the multi-meter on the AC plug and place the other lead on
each of the exposed metal parts, that is antenna connection, aerial and front
cover.
- The resistance during these measurements must be of 1 Mega Ohm or more. If
resistance is below 1 Mega Ohm, this indicates an abnormal situation and
corrective actions must be taken.
Please note: Avoid any skin contact either with the AC plug nor the metal parts
while performing the test, as it may infl uence the measurement.
- Reconnect mains voltage and turn on BeoSound 1. See #4 Theft protection if
necessary.
- Enter TM27 and read-out the errors for service use. Clear errors when done.
See #3 Test mode if necessary.
- Check that all keyboard buttons are OK.
- Tune in and store at least one radio station. Check other radio functions as well.
- Insert a CD in the CD-loader. The test-CD SBC 444A can be used. Ensure that
tracks 10, 17 and 19 on the CD are being played correctly.
- Ensure that all speakers are playing correctly and without dissonance.
- Use a dry, soft cloth. If necessary remove persistent dirt with a lint-free, fi rmly
wrung cloth, dipped in a solution of water containing only a few drops of mild
detergent. The front may also be cleaned with a soft brush mounted on a vacuum
cleaner set to the lowest level.