Olivetti CMS 140 B euro, Руководство по обслуживанию

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686770R Service Manual 2-5
Select mechanism
(See Fig. 2-2 and 2-4)
As shown in Fig. 1-4, the select mechanism consists
of the selective gear assembly, trigger coil, trigger
plate, trigger lever, and selective pawl. The select
mechanism operates during rotation of the reduction
gear series. When a drive signal is input (9) to the
trigger coil in conformance with the timing signal output
from the sensor, the trigger plate is drawn (10) to the
yoke fixed on the selective gear assembly so that the
trigger plate (11), trigger lever (12), and selective pawl
(13) rotate together with the selective gear assembly.
At the same time as the print changeover cam is
unlocked, the selective pawl locks (15) the tooth
section corresponding to the character of the selective
gear assembly. When the selective gear assembly is
stopped, the print wheel mounted on the same shaft
also is stopped, and the character selected.
Print gear series
(See Fig. 2-2 and 2-4)
The print gear series consists of the print changeover
cam and the print gear. When the selective gear
assembly is stopped by the select mechanism, the
interlocked selective drive gear is also stopped. At the
same time, the unlocked (14) print changeover cam is
coupled and is rotated (16) by the planet gear of the
totalling reduction gear series. The print gear thus
rotates (17) and transmits its movement to the printing
mechanism.
Fig. 2-4 Select Mechanism and Print Gear Series