Teac MT-20D-IO - Page 204

4-4-9 Replacement of PCBA Drive Control
(1) Articles to be used
(a) Phillips screwdriver No. 1
(b) Conventional type screwdriver small size
(c) Connector jig
Cd) SOA
(e) DC power supply (+12 V, +5 V)
(f) 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) Detach the protector guide in accordance with Item 4-2-3.(1).
(c) Extract all the connectors from the PCBA Drive Control in
accordance with Item 4-2-2.
(d) Remove the three clamping screws from the PCBA Drive Control, and
detach the PCBA Drive Control from MTU.
(e) Attach the new PCBA Drive Control in the reverse procedure to the
above.
(f) Check and adjust the BOT/EOT hole sensor in accordance with Item
4-3-10.
(g) Check and adjust the tape speed in accordance with Item 4-3-11.
(h) Check and adjust the read preamplifier level in accordance with
Item 4-3-14.
(i) Check and adjust the read level in accordance with Item 4-3-15.
(j) Attach the PCBA Interface Control in accordance with Item 4-4-10.
(k) Attach the protector guide in accordance with Item 4-2-3.(2).
(1) Perform the overall check in accordance with Item 4-3-22.
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