Wurlitzer One More Time Vinyl, Руководство по эксплуатации

Страница: 26 / 42

Failures with the tone arm or the tone system
OMT VINYL – edition: 13.08.2007
24
18.7 Failures with the tone arm or the tone system
18.8 Record not properly returned to carrier
Symptom Cause Possible faults
!
First second of music missing
because pick-up jumps off
starting groove
!
Tone arm release lever and
bushing assembly opening too
late
!
Tone arm release adjusting screw not
far enough in
!
Starting point of pick-up
floating (varies from record to
record)
!
Tone arm release lever and
bushing assembly opening too
early or tone arm loose on
shaft
!
Tone arm release adjusting screw not
far enough in. 2 worm screws M3x4 not
tight
!
Record not played completely
- tone arm lifts off too early
!
Main cam motor restarted too
early by tone arm trip switch
K3
!
Tone arm trip switch K3 maladjusted.
Remove adjusting screw to have play
time extended
!
Record playing but no sound
from the speakers
!
Defect in the system pick-up -
amplifier - speakers
!
Pick-up connector or speaker plug not
set at amplifier
!
Fuse Si4 open (= +30vDC missing.
This, however, would also disable motor
MM)
!
Grey line (pole) of amplifier-to-changer
cable broken off wiper K1 but shorted to
ground
Symptom Cause Possible faults
!
Gripper arm does not move to
take the record home
!
Main cam motor MM not
starting
!
Tone arm trip switch K3 not making,
maladjusted or open circuited. Refer to
chapter 18.7, on page 24 for faults if
symptom could have developed while a
record was playing
!
Retuned record not properly
unclamped (not freed) in the
carrier
!
Main cam motor MM switched
off too early
!
Wiper switch K6 wrongly adjusted
(compare with symptom 4 in
chapter
18.6, on page 22 and chapter 18.9.6,
on page 26 .
!
Record missing in
compartment is found in other
compartment or somewhere
about the chassis
!
Gripper arm delayed and
retarded by record binding
with the turntable (refer to
chapter 18.9.11, on page 27 )
!
Gripper arm generally moving
too fast
!
Maladjusted turntable chassis linkage
!
Burr at the turntable pilot or at the
records’ centerring hole
!
Series resistor R15 (with motor MM)
shorted