Read Sharp AL-840 (serv.man8) Service Manual online
(6) Remove the screw, and remove the power PWB unit (S009/
Ua001) from the base plate.
(7) Remove the power switch (S009/Ua001/P001) and the fuse
(S009/Ua001/P002) from the power PWB unit.
*
After-work
1) Output voltage adjustment (When any part i the power unit is
replaced.)
*
Troubles caused by improper work
1) Power abnormality
S009/Ua002
MCU (PCU) PWB unit
(1) Remove the rear cabinet S001/P001 .
(2) Remove the front upper cabinet S001/P002 .
(3) Remove the right cabinet S001/P003 .
(4) Remove the fan motor unit S010/P001 .
(5) Remove the screw and the connector.
(6) Remove the connector, and push the MCU (PCU) PWB unit
(S009/Ua002) inside then remove.
*
Troubles caused by improper work
1) Machine malfunction
S009/Ua003
ICU PWB interface PWB unit
S009/Ua004
High voltage/motor drive PWB unit
(1) Remove the base bottom base plate S001/P008 .
(2) Remove the screw and the connector, and remove the ICU PWB
interface PWB unit (S009/Ua003) and the high voltage/motor drive
PWB unit (S009/Ua004).
PWB unit (S009/Ua004).
S009/Ua001
S009/Ua001/P001
S009/Ua001/
P002
P002
S009/Ua002
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