Sharp LC-28HM2U Service Manual page 12

Lcd av monitor
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LC-28HM2
AN-28SP2
Ë
AVC System
1. Remove the top cabinet fixing screws (4 pcs.) from right and left sides and those (5 pcs.) from the rear side.
2. Remove the front terminal cover fixing screws (2 pcs.), and disconnect the cable connecting the front terminal
PWB and the main PWB.
3. Disengage the front terminal cover fixing tabs at 3 locations on top, one location each at right and left sides,
and 2 locations at bottom.
4. Remove the rear terminal cover fixing screws (4 pcs.), and detach the cover.
5. Remove the shield plate fixing screws (5 pcs.). (Among the five screws, two are used also to fix the power
supply PWB fixing angle.)
6. Remove the power supply PWB fixing screws (4 pcs.), detach the connectors from the power supply PWB and
the main PWB, and then remove the power supply PWB.
7. Remove the rear terminal PWB fixing screws.
7-1. Remove the fixing screws (2 pcs.) from the dedicated display output terminal.
7-2. Remove the hexagonal shaft (2 pcs.) fixing the control terminal.
7-3. Remove the hexagonal shaft (2 pcs.) fixing the PC input terminal.
8. Remove the fixing screws (3 pcs.) to detach the main PWB, the rear terminal PWB and the PC I/F PWB. When
detaching the rear terminal PWB, lift up the front part of PWB and pull out the PWB terminals from the terminal
slots.
9. Remove the front terminal PWB fixing screws (3 pcs.), and detach the PWB.
3
Front terminal PWB
Top cabinet
1
Shield plate
8
Rear terminal PWB
Main PWB
Rear terminal cover
4
2
3
2
3
3
3
3
3
2
Front terminal cover
9
1
5
1
5
PC I/F PWB
7-1
Bottom cabinet
12
1
4
7-2
7-3
Power PWB
fixing angle
Power PWB
6

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