Final check after repair, English 1.29
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 contents is:
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AC leakage test.
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Check product information.
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Restore the setup and check connections, picture and sound.
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Final cleaning of the product.
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PIN-code setting.
AC leakage test
The scope of the test is, to check the antenna terminals and other exposed metal
parts for AC leakage.
1. Remove the line cable from the AC source (the wall outlet).
2. Place a jumper across the two AC plugs prongs.
3. Use a multi-meter, set for measurements in the ohm-area.
4. 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 connections and other exposed
metal parts on the rear panel of the product.
5. 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.
Insulation test
Each set 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.
Flashovers must not occur during the testing procedure!
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
aerial socket.
NOTE!
To avoid damaging the set it is essential that both terminals of the insulation tester
have good contact.
Slowly turn the voltage control of the insulation tester until a voltage of 1.5 kV
and max. 10mA is obtained. Maintain that voltage for one second, then slowly
turn it down again.
Monitor information
The scope of this check is, to ensure the following:
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The product has maintained the correct identity.
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Is set to correct option.
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The error code register is cleared.
Procedure
1. Enter Service menu – monitor service menu – monitor information .
2. Check the serial number is correct.
3. Check option setting is correct.
4. Clear the error code.
5. Select error code and press
GO
.
