4. KEY PART REPLACEMENT & WIRE DRESSING
4-1 Top Cover
Loosen 3 screws on the front of top cover.
Loosen 3 screws on the back of top cover.
Loosen 4 screws on the right of top cover.
Loosen 4 screws on the left of top cover.
Open the top cover.
Take out the top cover.
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