Bang & Olufsen BeoLab 9 6217, Service Manual

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Final check after repair
Final check after repair
The final check after repair describes the activities that are needed to ensure the
product will be returned in perfect condition to the customer.
The content is:
– Insulation test.
– Restore setup.
– Final cleaning of the product.
Insulation test
The product must be insulation tested after having been dismantled. Make the
test when the set has been reassembled and is ready to be returned to the
customer.
Flashover must not occur during the test.
Make the insulation test as follows:
Short-circuit the two pins of the mains plug and connect them to one of the
terminals of the insulation tester.
Connect the other terminal to ground on the Power Link socket.
NOTE!
To avoid damaging the product it is essential that both terminals of the insulation
tester have good contact.
During the test the current must not exceed 5 mA.
Slowly increase the voltage on the insulation tester until a voltage of 2.5 kV (ac) is
obtained. Maintain the voltage level for one second, then slowly decrease the
voltage to 0 V (ac).
Restore setup
Ensure that,
– The F/W/C switch is in correct position.
– The plug is inserted over the standby LED.
– The Power Link cable is a MK III or higher.
Check sound
Ensure that all speakers are OK.
Clean the product
Clean dusty surfaces using a dry soft cloth. If necessary, remove grease stains or
persistent dirt with a lint-free, firmly wrung cloth, dipped in a solution of water
containing only a few drops of mild detergent such as washing-up liquid.
The loudspeaker front grill may be cleaned with a vacuum cleaner with a soft
brush nozzle, and set to the lowest level.
Final check after repair 3.3