Picture Is Not Displayed; No Sound - Hitachi CPX1 Service Manual

Picture is not displayed.

Are
the splash
screen and the user menu
displayed correctly?
Yes
PWB assembly MAIN
the speaker from the
PWB assembly Main, and
PWB assembly Main
CPX1(M1-20)
Confirm
No
the LCD Panels
connection to the MAIN
board.
PWB assembly MAIN

No sound

Check at operating mode
(Make sure the state of MUTE and Volume)
Disconnect
infinity
measure its
resistance.
about 8
14
NG
CPC40 connector 54104/54132
OK
LCD/Lens prism assembly
Speaker