Step 2 Remove 1 screw.Step 3 Remove the switch regulator IC (IC5701) from theheatsink unit B.Caution: Handle the heatsink unit B with caution due to itshigh temperature after prolonged use. Touching it maylead to injuries.Note : Refer to the diagrams of SMPS P.C.B. (Item 10.17.) forlocation of the parts.10.19. Disassembly of RegulatorDiode (D5803)•••• Follow (Step 1) to (Step 3) of Item 10.3.•••• Follow (Step 1) to (Step 3) of Item 10.4.•••• Follow (Step 1) to (Step 4) of Item 10.5.•••• Follow (Step 1) to (Step 4) of Item 10.7.•••• Follow (Step 1) to (Step 7) of Item 10.17.Step 1 Desolder pins of the regulator (D5803) on the back sideof SMPS P.C.B.Step 2 Remove 1 screw.Step 3 Remove the diode (D5803) from the heatsink unit C.Caution: Handle the heatsink unit C with caution due to itshigh temperature after prolonged use. Touching it maylead to injuries.Note : Refer to the diagrams of SMPS P.C.B. (Item 10.18.) forlocation of the parts.10.20. Disassembly of RegulatorDiode (D5801/D5802)•••• Follow (Step 1) to (Step 3) of Item 10.3.•••• Follow (Step 1) to (Step 3) of Item 10.4.•••• Follow (Step 1) to (Step 4) of Item 10.5.•••• Follow (Step 1) to (Step 4) of Item 10.7.•••• Follow (Step 1) to (Step 7) of Item 10.17.Step 1 Desolder pins of the regulator diode (D5801/D5802) onthe back side of SMPS P.C.B.59SA-PT750PL