Head Up/Down (Hl) Axis Motor Removal - Yamaha SIGMA-G5SII Service Information

4.9. Head Up/Down (HL) Axis Motor Removal

(1) When the motor is to be changed, record the measured values of the head up/down
height before the motor change.
Find the reference and measure that position.
Also, record the head up/down offset in advance.
* In the case that the motor zeroing operation is not available, this operation is not
required.
(2) Loosen the coupling fixing bolt (M2L8) on the ball screw side of the HL-axis so that
the motor can be removed. (One bolt each in the upper and lower sections)
* When the coupling set bolt is to be loosened, approach from the section framed in
red lines in the following figure. This is because the tool can be inserted only from
the head side.
(3) Separate the HL-axis motor cables which have tied up with a harnessed belt.
(4) Loosen the motor fixing bolt (M2. 5L10) on the HL-axis and remove the motor.
Fig.D48
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Service Information
Approach area to the
coupling fixing bolt
SI1705004E-00=SIGMA-G5SII Service Manual
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