Hitachi 42HDF52A Service Manual page 23

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Check if RS-232 Cable
has been well connected
to the PDP?
Take off the back cover.
Check if all wires have
been well connected to the
PCB-RS232 & PCB-Main?
Change the PCB-RS232
and see if it works?
Change the PCB-Main.
Yes
Yes
No
No
Connect RS-232
Cable properly.
No
Connect the wires
properly.
Yes
23
Test
again