Removing The Main Pwb Unit; Removing The Speaker, Fan, And Power Supply Ballast Unit - Sharp PG-MB56X Service Manual

[3] Removing the main PWB unit

1. Remove all connectors from the main PWB unit.
2. Remove 2 terminal fixing screws.
3. Remove 3 main PWB fixing screws to detach the main PWB unit.

[4] Removing the speaker, fan, and power supply ballast unit

1. Remove the speaker.
2. Remove 2 fans for the power supply ballast unit and 1 fan for the optical mechanism unit.
3. Remove 2 bimetal fixing screws to detach the bimetal.
4. Remove 2 lamp socket fixing screws to detach the lamp socket.
5. Remove 1 inlet fixing screw.
6. Remove 4 ballast unit fixing screws to detach the power supply ballast unit.
7. Remove 4 ballast shield (upper) fixing screws to detach the ballast shield (upper).
8. Remove 2 ballast PWB fixing screws and 1 clip to detach the power supply PWB unit from the ballast shield (lower).
POWER SUPPLY BALLAST Unit
Lamp Socket
Fans for power supply
ballast unit
Fan for
optical
mechanism
unit
4-2
4-3
PG-MB56X/PG-MB66X/XG-MB55X-L/XG-MB65X-L/XG-MB67X-L
3-3
[CW]
[RC]
[SO]
3-2
4-6
4-4
4-1
Speaker
Bimetal
3-1
[FA]
[MO]
[LF] MAIN PWB Unit
[BB]
[FD]
[FC]
[EA]
[FB]
3-3
4-7
POWER SUPPLY
BALLAST PWB
Unit
4-5
2 – 2
Ballast shield (upper)
4-7
4-8
Ballast
shield
(lower)
4-8