Brother TD-4000 Service Manual page 59

(9) Remove the head cable black and head cable white from the head ASSY.
(10) Remove the ferrite core from the head cable black and head cable white.
Head ASSY
Figure 3.4-44 Disassembling the Mecha ASSY (7)
(11) Remove the two head springs from the sub plate.
(12) Remove the two tapes from the sub plate.
NOTE: Keep the tape to use by the reassembly operation after removing it.
Figure 3.4-45 Disassembling the Mecha ASSY (8)
Head cable white
Sub plate
III - 34
Ferrite core
Tapes
Head springs
Head cable black