Technical information

OPERATIONS ANO TIMING RSSZ
3. Lens Drive Motor Circuit
The lens drive motor is a stepping motor and
rotatesin responsetothedrivepowersignal(LNSTB)
and pulse signals (LNA. LNA, LNB, LNB).
Tostartthelensdrivemotor, LNSTBgoes’l’; and
the motor is rotated by applying pulses on each
phase in sequence.
When the lens drive motor is at rest, LNSTB is ‘0’;
the motor is supplied with current by way of R418 so
as to hold the lens in place.
5308
5401 ! ,k i”“‘” 1
-12 LNA -3’
1
~.
DC controller PCB
Motor driver PCB
Figure 3-15
-1 B I
I
Lens drive motor
COPYRIGHT 0 1992 CANON IHC.
CANON HPZ120/ZMO RN.0 MAY 1990 PAINTEO IN JAPAN IIMPRIME AU JAPOHI
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