Replacement Of Digital Amp Ic (Ic5400) - Panasonic SA-PT860E Service Manual

SA-PT860E / SA-PT860EB / SA-PT860EG
9.19. Replacement of Digital Amp IC
(IC5400)
• • • • Follow (Step 1) to (Step 3) of Item 9.3.
• • • • Follow (Step 1) to (Step 2) of Item 9.16.
Step 1 Desolder pins of the digital amp IC (IC5400) on the
reverse side of D-Amp P.C.B.
Step 2 Remove 1 screw at the TR spring.
Step 3 Remove the TR spring in the direction of arrows.
Step 4 Remove the digital amp IC (IC5400) from the heatsink
unit A.
Caution: Handle the heatsink unit A with caution due to its
high temperature after prolonged use. Touching it may
lead to injuries.
Note: Refer to the diagrams of D-Amp P.C.B. (Item 20.4) for
location of the part.
9.19.1. Assembly of Digital Amp IC
(IC5400)
Step 1 Fix the digital amp IC (IC5400) to the heatsink unit A.
Step 2 Screw the TR spring to the heatsink unit A.
Step 3 Use a blower to remove the minute particles that might
be caused after the process of the screwing TR spring to the
heatsink unit A.
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