Disassembly Of Smps & Ac-Inlet P.c.b; Replacement Of Switch Regulator Ic & Diode (Ic5701/D5702) - Panasonic SA-PT550E Service Manual

SA-PT550E / SA-PT550EB / SA-PT550EG
Note : For replacement of IC5200, IC5300 & IC5400, repeat
the (Step 1) to (Step 4). Refer to the diagrams of D-Amp P.C.B.
(Item 10.16) for location of the parts.
10.18. Disassembly of SMPS & AC-
Inlet P.C.B.
· Follow (Step 1) to (Step 3) of Item 10.3.
· Follow (Step 1) to (Step 2) of Item 10.16. for Disassembly
of D-Amp P.C.B. Bracket.
Step 1 Remove 3 screws from SMPS P.C.B.
Step 2 Remove 1 screw from AC-Inlet P.C.B.
Step 3 Remove the wire clamper to detach FFC cable from the
connector (CN5801) on SMPS P.C.B.
Step 4 Detach FFC cable from the connector (CN5802) on
SMPS P.C.B.
Step 5 Remove the lead clamper.
Step 6 Remove 1 screw from the rear panel.
Step 7 Release the tab of the rear panel in the direction of
arrow.
Step 8 Remove SMPS & AC-Inlet P.C.B.
10.19. Replacement of Switch
Regulator IC & Diode
(IC5701/D5702)
· Follow (Step 1) to (Step 3) of Item 10.3.
· Follow (Step 1) to (Step 8) of Item 10.18.
Step 1 Desolder pins of the switch reguIator IC & diode
(IC5701 & D5702) on the back side of SMPS P.C.B.
Step 2 Remove 1 screw from the switch regulator IC (IC5701).
Step 3 Remove 1 screw from the switch regulator diode
(D5702).
Step 4 Remove the switch regulator IC (IC5701) & diode
(D5702) from the heatsink unit B.
Caution : Handle the heatsink unit B with caution due to its
high temperature after prolonged use. Touching it may lead to
injuries.
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