Teletype 43K001/AAA, Руководство по ремонту, Страница: 49 / 82

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Keyboard Holding Fixture
To aid in disassembly and reassembly procedures
of the 50K122 keyboard the use of a keyboard
holding fixture is recommended .
Holding fixture for low volume keyboard repair:
(a) The holding fixture is assembled using the
28277PK wooden end plates which are
part of the keyboard packing material. (Fig. 53)
WOODEN
END PLATES
MANUAL 525, 3-17
(b) To secure the wooden end plates to the
keyboard drill a hole in each end plate as
shown in Fig. 53.
(c) Insert a 6-40 hex screw 3/4 inch in length
through the hole drilled in the end plate
and screw it into the threaded hole normally
used for the 181240 mounting screw.
(d) When bqth end plates are secured to the
keyboard housing the keyboard can be
turned over and the circuit card removed .
.1405 DIAMETER
DRILL SIZE
3"
2i6
0
2
16
Fig. 53-Holding Fixture For Low Volume Keyboard Repair
Note:
The bottom pan must be removed before the wooden end plates are mounted on the keyboard.