Panasonic SA-AK250, Service Manual

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Step 1 Remove the 4 screws on Power P.C.B..
Step 2 Detach cable at connector (CN5950) on Transformer
P.C.B..
Step 3 Remove Power P.C.B..
Note:
Insulate the Power P.C.B. with insulation material to avoid short
circuit.
· Replacement of Power Amp IC (IC5301).
Step 1 Detach FFC cables at connectors (CN2803 & CN2806)
on Main P.C.B..
Step 2 Detach cable at connector (CN5951) on Transformer
P.C.B..
Step 1 Flip the Power P.C.B. over and desolder the pins.
Step 2 Remove 1 screw and IC clip (For IC5301 only).
Step 3 Remove IC5301 from heat sink unit.
Note: For disassembly of IC5101, Q5101, Q5102, Q5111
and Q5112 repeat (Step 1) to (Step 2) . (For information,
IC5101, Q5101, Q5102, Q5111 and Q5112 does not have
IC clip.)
10.9. Disassembly of Power P.C.B.
· Follow the (Step 1) - (Step 5) of Item 10.4
· Follow the (Step 1) - (Step 4) of Item 10.5
· Follow the (Step 1) - (Step 4) of Item 10.6
· Follow the (Step 1) - (Step 3) of Item 10.7
10.10. Disassembly of Front Panel Unit
· Follow the (Step 1) - (Step 5) of Item 10.4
· Follow the (Step 1) - (Step 4) of Item 10.5
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SA-AK250PL