Auto-Return Adjustment - Sanyo TP 477 Service Manual

/ ADJUSTMENT _
AUTO-RETURN ADJUSTMENT
When the distance between the center of center shaft and
_ the needle tip becomes 64 ae mm, the outer periphery
of pawl of pinion should begin to touch the claw of engage-
ment lever.
METHOD OF ADJUSTMENT
(1) Preparation | |
After removing the turntable, etc. and pressing the
lower trip lever in the dirction of arrow, take the arm
-towrd :the danter shaft to let the rip lever push the
. lower tip bratket, move the arm slowly.
(2) Adjustment
According to the foliowing method, adjust the distance
Pinion
between the center of center shaft and the needle tip
to the aforementioned range under the condition (of
the above figure) that the claw part of engagement
lever touches the pawl outer periphery of pinion when
the lower trip lever and engagement lever move as
pushed by the trip lever. |
Method
Insert a blade screwdriver into the concave part: of —
lower trip lever bracket, and turn the screwdriver to
adjust the said distance. If turned clockwise, a position —
at a start of contact delays by about 0.72 mm at a time.
per 1¢ ; if turned counterclockwise, it advances by the
same rate.
(3) Confirmation
Confirm of your auto-return mechanism (RG652/
RG653) as based on the Product Specifications.
ADJUSTMENT OF STYLUS HEIGHT
Setting the record disk in place, raise the tonearm lift
lever. | |
Bring the tonearm to above the disk, and insert a screw- |
driver into the "'stylus height adjust'' hole (see drawing for
ADJUSTMENT OF AUTO-RETURN) and turn it right or
left until the distance between the disk and stylus becomes
8+ imm.
ADJUSTMENT OF TURNTABLE SPEED
Play a wow flutter checking record, and adjust by turning
SVR1 (45 rpm) and SVR2 (33 rpm) so as to obtain the
specified frequency. |
Engagement Lever
record disk
| Touch
Center Shaft
OF
Lower Trip Lever
= Lower
Ngee Trip Bracket
Trip Lever
SVR2____
33rpm ADJUST
SVR1 | =|
45rpm ADJUST
33 45 REJECT
SPEED