11.12. Disassembly of Main P.C.B.,
AC-Inlet P.C.B. & Tuner Extent
P.C.B.
·
Follow the Item 11.3.
·
Follow the (Step 1) of Item 11.5.
·
Follow the (Step 1) of Item 11.8.
·
Follow the (Step 1) of Item 11.9.
·
Follow the (Step 1) of Item 11.10.
Step 1 Unscrew 2 screws.
Step 2 Detach fan unit. (CN5714)
Step 3 Remove 2 tie wraps (used for blue/brown wires between
AC-inlet P.C.B, and Power P.C.B.) to the side of bottom
chassis.
Caution: Please tie wraps for the wires after repair to avoid
the wires touching the nearby heatsink.
Step 4 Remove 5 screws.
Step 5 Detach FFC cables from the connectors. (CN2001,
CN2004, CN2006, CN2008, CN2012)
11.13. Disassembly of Digital Amp IC
·
Follow (Step 1) to (Step 2) of Item 11.11.
Step 1 Desolder all IC5000, IC5200, IC5300 pins.
Step 2 Release the claws.
Step 3 Remove the D. Amp IC.
Note: Refer to the diagrams of Power P.C.B. (Section 19.2) for
location of the parts.
11.14. Disassembly of Digital Amp IC
(IC5400)
·
Follow (Step 1) to (Step 2) of Item 11.11.
Step 1 Desolder all pins of IC5400.
Step 2 Desolder 2 pins of Heat Sink B.
Step 3 Remove the Digital Amp IC (IC5400).
Note: Refer to the diagrams of Power P.C.B. (Section 19.2) for
location of the parts.
11.15. Disassembly of Regulator IC
·
Follow (Step 1) to (Step 2) of Item 10.11.
Step 1 Desolder all pins of D5711, D5716, D5717, D5718.
Step 2 Desolder 2 pins of Regulator IC.
Step 3 Remove the Regulator IC.
39
SA-HT855E / SA-HT855EB / SA-HT855EG
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