Read Sharp QT-CD150H (serv.man4) Technical Bulletin online
Sharp Electronics (UK) Limited CE Technical Support Group
Originator
$Y:
$Y:
Supervisor
Approval Date / / Reference EAA-850
White - Carry out as required Yellow - Carry out as required and whenever unit comes in for service Red - Carry out on all units
AUD980607
Month of Issue : June 1998
Classification : White
AUDIO TECHNICAL BULLETIN
Page 1 of 2
MODELS
QTCD50H
QTCD150H
QTCD40E
SYMPTOM
During playback of the compact disc, intermittent dropout may occur due to
vibration.
vibration.
CAUSE
Spring cushions loosing rigidity and servo circuit response too slow.
ACTION
Change the spring cushions as indicated in the diagram on page 2.
Also carry out the following circuit modification.
1. Change C125 for the part indicated below.
2. Remove capacitors C123, C126 and C127.
3. Change R115, R116, R118, R119 and R123 for the parts indicated below.
2. Remove capacitors C123, C126 and C127.
3. Change R115, R116, R118, R119 and R123 for the parts indicated below.
REF NO
DESCRIPTION
PART NUMBER
PRICE CODE
C125
Capacitor 33nF
VCKZPU1HF333Z
AA
R115
Resistor 27k
VRD-ST2CD272J
AA
R116
Resistor 39k
VRD-ST2CD392J
AA
R118
Resistor 150k
VRD-ST2CD154J
AA
R119
Resistor 82k
VRD-ST2CD823J
AA
R123
Resistor 220k
VRD-ST2CD224J
AA
Sharp Electronics (UK) Limited CE Technical Support Group
Originator
$Y:
$Y:
Supervisor
Approval Date / / Reference EAA-850
White - Carry out as required Yellow - Carry out as required and whenever unit comes in for service Red - Carry out on all units
AUD980607
Month of Issue : June 1998
Classification : White
AUDIO TECHNICAL BULLETIN
Page 2 of 2
Fitting of rubber Mounts - New Type Shown on Right
Location of Components
Display
