Checking & Repair Smps P.c.b; Checking & Repair D-Amp P.c.b - Panasonic SA-PT750PL Service Manual

Step 17 Connect the AC cord and switch on the power.
Step 18 Place a CD/DVD onto the tray base assembly and play
it by selecting one of the DISC SELECTOR button on Power
Button P.C.B.
Step 19 While the CD/DVD is being played, remove the tray
base assembly in the direction of arrow by repeating the
(Step1) to (Step 4) of Item 10.7.
Step 20 Turn over Main P.C.B. vertically and place it according
to the diagram shown below.
12.3. Checking & Repair SMPS
P.C.B.
• • • • Follow (Step 1) to (Step 19) of Item 12.2.
Step 1 Turn over SMPS P.C.B. vertically and place it according
to the diagram shown below.
Note: AC-Inlet P.C.B can be placed on an object (eg. box) to
avoid its contact with mechanism base assembly.
Caution: Be careful of power heatsinks located on SMPS
P.C.B., which has high temperature after prolonged use,
when servcing the P.C.B.
12.4. Checking & Repair D-Amp
P.C.B.
• • • • Follow (Step 1) to (Step 19) of Item 12.2.
Step 1 Turn over D-Amp P.C.B. vertically and place it
according to the diagram shown below.
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SA-PT750PL