• Replacement of the Power Amplifier IC and Regulator
Transistor.
Step 1 Follow the procedures in “Checking procedure for each
major P.C.B.
Step 2 Remove the wires at CN302, CN303 and H603A/W603
and pull out the Main P.C.B..
Step 3 Remove 4 screws fixed to the Power Amplifier IC and
Transistor Holders.
Step 4 Unsolder the terminals of Power Amp IC and replace
the component.
9.4. Disassembling the Middle
Chassis
Step 1 Remove the holder pins.
Step 2 Remove the tab.
Step 3 It lifts while pulling it in the direction of the arrow.
• Checking for Power P.C.B.
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SA-DK20