Operating instructions

Figure 6-5
Tape Lifter Adjustment
NOTE: Components shown are an "x-ray" view, i.e., as though seen looking
down on top of the deck plate. In fact, only the airpot adjustment screw is
accessible from the top with the deck cover plate removed, while all parts are
accessible below the deck plate.
4. The L-shaped bracket securing the solenoid is screwed to the deck plate
with 2 phillips screws. The mounting holes in this bracket are slotted so
the solenoid can be moved back and forth after loosening the screws.
Tighten the screws securely after moving the solenoid to achieve the
proper clearance between the lifters and the reproduce head.
5. Place the transport in Fast Forward mode and allow the tape to reach full
winding speed. Press the PLAY button and observe the tape lifters. The
tape should be lowered gently onto the heads. If it is not, turn the
damping adjustment screw on the end of the air pot (accessible beneath
the deck plate) clockwise to increase damping. If it take more than 1.5
to 2 seconds for the lifters to retract when going from Wind to Stop
modes, turn the damping adjustment screw counterclockwise to
decrease the damping. The time required for the lifters to retract should
be between 0.5 and 1.5 seconds.
LIFTER
SOLENOID
LIFTER PIN
ADJUSTMENT SCREWS FOR
"L" BRACKET ON LINKAGE
(LIFTER IN RESTING POSITION)
AIRPOT
LINKAGE TO OTHER TAPE LIFTER ASSEMBLY
(THIS PROCEDURE ADJUST BOTH LIFTERS AT THE SAME TIME)
MTR-90III Operation and Maintenance Manual
October 1990
Section 6 Alignment
6 - 9