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A very easy to understand and use manual. Well worth the money.
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Very good information with clear drawings. Thanks!
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The ease of this purchase was a good start. The content of this manual was exactly all I needed to retore my Tandberg 64.
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GH688,GA628, Standard Electrical Repairs
* Measure the resistance from X602 pad 5 to ground (>100 kohms). * If it�s too low, make sure there�s no dirt or oxide between the components in the marked area (�g. 4.5). Clean thoroughly and measure again.
Fig. 4.5 * If the resistance still is too low, remove R601 (class A, �g. 4.4). * If the resistance increased, replace D600 (class B, �g. 4.2) and mount a new R601. * If the resistance didn�t increase when removing R601 or it didn�t help by replacing D600, send the phone to the next level.
* Measure the resistance from X602 pad 3 to ground (>100 kohms). * If it�s too low, make sure there�s no dirt or oxide between the components in the marked area (�g. 4.5). Clean thoroughly and measure again. * If the resistance still is too low, remove R605 (class A, �g. 4.4) and measure again. * If the resistance increased, replace D600 (class B, �g. 4.2) and mount a new R605. * If the resistance didn�t increase when removing R605 or it didn�t help by replacing D600, send the phone to the next level.
If all the above measured resistances are correct, but some of the voltages at R601 or R605 are low it�s either caused by a slight short circuit due to dirt at the marked area in fig. 4.5, broken F603 or broken F604.
� If the voltages at R601 and R605 are correct, connect a handsfree to the system connector. � Measure the voltages at both sides of R601 (~0V, �g. 4.4) and at D600 pin 70 (~0V, �g. 4.2).
4/00021-2/FEA 209 544/1.G
26 (112)
 $4.99 GH688 ERICSSON
User Guide It's a complete guide ( also known as operating manual or owner's manual), and it's in PDF format. A…
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