Teac MT-20D-IO - Page 183

4-4-4 Replacement of LED hole sensor Ass'y
(1) Articles to be used
(a) Phillips screwdriver No. 1
(b) Nipper
(c) Tweezers
(d) Other articles required in "Check and Adjustment" item.
(2) Replacement procedure
(a) Detach the PCBA Interface Control in accordance with Item 4-4-10.
(b) Push in the ejector with the finger to bring about the cassette
loading status (Figs. 302, 303).
Remark If the cassette unloading status is kept as it is, there
is a danger that the motor base is bent during
installation of the LED hole sensor Ass'y.
Be sure to proceed with work in the cassette loading
status.
(c) Extract the connector J8.
(d) Cut with the nipper the cable tie, which clamps the cables of the
LED hole sensor Ass'y (Fig. 436).
(e) Extract the contacts (terminal Nos. 9, 10) of the LED hole sensor
Ass'y from the connector housing.
(f) Remove the two cables of the LED hole sensor Ass'y from the PCBA
holder and bead to make them free (Fig. 436).
(g) Remove the mounting screws of the LED hole sensor Ass 'y, and
detach the LED hole sensor Ass'y. At this time, remove the tube
from the cables (Fig. 441).
(h) Attach the new LED hole sensor Ass'y in the reverse procedure to
the above. Then, thread the cables through the tube removed in
step (g).
(i) Thread the cables of the hole sensor Ass'y through the beads, and
insert the contacts into the connector housing.
Remark The white cable and blue cable of the LED hole sensor
ASs'y correspond to pins 9 and 10, respectively.
(j) Connect the connector J8.
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