Read Sharp PG-M20X (serv.man7) Service Manual online
13
PG-M20X
REMOVING OF MAJOR PARTS
1. Removal of the top body
1-1. Detach the terminal block cover.
1-2. Remove the five lock screws from the top body.
1-3. Slightly lift the front of the top body and disconnect the speaker connector.
1-2. Remove the five lock screws from the top body.
1-3. Slightly lift the front of the top body and disconnect the speaker connector.
2. Removal of the power PWB unit and cooling fan
2-1. Disconnect the specified connectors.
2-2. Detach the cooling fan.
2-3. Remove the four lock screws from the power unit.
2-4. Remove the three lock screws from the PFC PWB.
2-2. Detach the cooling fan.
2-3. Remove the four lock screws from the power unit.
2-4. Remove the three lock screws from the PFC PWB.
Top body
Terminal cover
1-2
1-1
1-2
1-2
1-2
1-3
1-2
2-4
2-2
2-1
2-3
2-1
Power Unit
PFC Unit
Cooling fan
14
PG-M20X
3. Removal of the PC I/F PWB and input PWB
3-1. Disconnect the specified connectors.
3-2. Remove the three lock screws and two hex screws from the PC I/F PWB.
3-3. Disconnect the connector from the input PWB.
3-4. Remove the three lock screws from the input PWB.
3-5. Remove the lock screw from the terminal block cover.
3-2. Remove the three lock screws and two hex screws from the PC I/F PWB.
3-3. Disconnect the connector from the input PWB.
3-4. Remove the three lock screws from the input PWB.
3-5. Remove the lock screw from the terminal block cover.
3-2
3-4
3-1
3-3
3-5
3-3
3-2
PC I/F Unit
Input Unit
15
PG-M20X
4. Removal of the operation PWB, optical unit and ballast unit
4-1. Disconnect the specified connectors from each PWB.
4-2. Remove the two lock screws from the operation PWB.
4-3. Remove the six lock screws from the optical unit.
4-4. Remove the lock screw from the ballast unit.
4-2. Remove the two lock screws from the operation PWB.
4-3. Remove the six lock screws from the optical unit.
4-4. Remove the lock screw from the ballast unit.
5. Removal of the formatter PWB
5-1. Remove the two lock screws from the heat sink.
5-2. Remove the four lock screws from the backer plate assembly, and detach the formatter PWB.
5-2. Remove the four lock screws from the backer plate assembly, and detach the formatter PWB.
4-1
4-2
4-2
4-3
4-4
4-1
Optical mechanism Unit
KEY Unit
Bottom body
Ballast Unit
5-1
5-1
Formatter Unit
Backer plate Assy
DMD Unit
Heat sink
