Brother GTX-4 Service Manual page 357

(14) Take out the CN13 (POWER SW) drawn toward the inside of the main unit at Step 5 from the main unit.
(15) Separate the panel unit from the main unit.
(16) Open the three M clamps of the main circuit board plate and detach all the three harnesses.
(17) Remove the two screws of the main circuit board plate to detach it.
Main circuit board plate
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Assembly
(1) To perform the assembly, take the reverse procedures to disassembly operation.
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Disassembly / Replacement / Adjustment
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