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Technics SL-QL5

Technics SL-QL5
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a
ei
Ss
(
i
y
ORDER
NO.
DAD84030070C9
eS)
Service
Manual
Quartz
Direct
Drive
Automatic
Turntable
System
SL-QL5/(k)
[E],
[EK],
[XL],
[EG],
[EB],
[EH],
[EF],
(Ei),
[EC],
[XA],
=
[XM],
[PA],
[PE],
[PC]
*[E]
is
available
in
Switzerland
and
Scandinavia.
ne
*
[EK]
is
available
in
United
Kingdom.
*
[XL]
is
available
in
Australia.
*
[EG]
is
available
in
F.R.
Germany.
*
[EB]
is
available
in
Belgium.
*
[EH]
is
available
in
Holland.
*
[EF]
is
available
in
France.
*
[Ei]
is
available
in
Italy.
*
[EC]
is
available
in
Czechoslovakia.
*
[XA]
is
available
in
Southeast
Asia,
Oceania,
Africa,
Middle
Near
East
and
Central
South
America.
*
[XM]
is
available
in
Central
South
America.
*
[PA]
is
available
in
far
East
PX.
*
[PE]
is
available
in
European
Military.
*
[PC]
is
available
in
European
Audio
Club.
Jy
is
the
standard
mark
for
the
‘‘P-mount’’
plug-in-connector
system.
Products
carrying
this
mark
are
inter-changeable
and
compatible
with
each
other.
*The
colors
of
this
model
include
silver
and
black.
*The
black
type
model
is
provided
with
(K)
in
the
Service
Manual.
Please
use
this
manual
together
with
the
service
manual
for
Model
No.
SL-OL5,
Order
No.
DAD84030069C1.
English
s:
rn
Specifications
are
subject
to
change
without
notice
for
further
improvement.
Specifications
Weight
and
dimensions
shown
are
approximate.
@
General
Direct
drive
Brushless
DC
motor
Quartz-phase-locked
control
Drive
method:
Motor:
Drive
control
method:
For
United
Kingdom:
240
V
AC.
50
Hz
For
continental
Europe:
220
V
AC,
50
Hz
Power
supply:
Power
consumption:
Dimensions:
(WxHxD)
Weight:
@
Turntable
section
Type:
For
others:
--110-120/220-240
V.
50
or
60
Hz
10
W
43
xX
8.8
x
35
cm
(16-59/64"
x
3-1/2”
X
13-25/32”)
43
x
38.5
x
35cm
16-59/64”
X
15-23/64”
x
13-25/32”
(Maximum
height
when
dust
cover
is
open.)
5.1
kg
(11.2
Ib.)
Direct
drive
Fully
Automatic
turntable
Auto
start/Auto
lead-in
Auto
return
Auto
stop
Repeat
play
Auto
speed
select
Manual
speed
selection
possible
Auto
size
select
Record
presence
detection
Turntable
platter:
Turntable
speeds:
Wow
and
flutter:
Aluminum
die-cast
Diameter
30
cm
(12”)
33-1/3
rpm
and
45
rpm
Auto
speed
select
(Manual
seletion
possible)
0.012%
WRMS*
0.025%
WRMS
(JIS
C5521)
+0.035%
peak
(IEC
98A
Weighted)
*
Measured
by
obtaining
signal
from
built-in
frequency
generator
of
motor
assembly.
Rumble:
Tonearm
section
Type:
Effective
length:
Tracking
error
angle:
Effective
mass:
Resonance
frequency:
—56
dB
(IEC
98A
Unweighted)
~78
dB
(IEC
98A
Weighted)
Dynamic
balanced
type
Linear
tracking
tonearm
4-pivot
gimbal
suspension
10.5
cm
(4-1/8")
Within
+0.1°
9
g
(including
cartridge)
12
Hz
Technics
Matsushita
Electric
Trading
Co.,
Ltd.
P.O.
Box
288,
Central
Osaka
Japan
Panasonic
Tokyo
Matsushita
Electric
Industrial
Co.,
Ltd.
1-2,
1-chome,
Shibakoen,
Minato-ku,
Tokyo
105
Japan
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Technics SL-QL5 Specifications

General IconGeneral
BrandTechnics
ModelSL-QL5
CategoryTurntable
LanguageEnglish

Summary

Specifications

General

Provides overall technical specifications for the turntable system, including power, dimensions, and weight.

Turntable Section

Details specifications related to the turntable platter, drive system, motor, and speeds.

Tonearm Section

Outlines specifications for the tonearm, including type, length, tracking error, and resonance.

Measurements and Adjustments

Instruments Used

Lists the necessary tools and equipment required for performing measurements and adjustments on the unit.

Adjustment Points and Procedures

Highlights key adjustment points and details procedures for start position, clock frequency, servo gain, and offset voltage.

Replacement Parts List

Cabinet and Chassis Parts

Lists replacement parts for the unit's exterior and internal chassis components, including name plates and covers.

Tonearm Parts

Details replacement parts specifically for the tonearm assembly, including cartridges and styli.

Accessories

Lists replacement accessories such as instruction books, AC cords, and plugs.

Circuit Diagrams

Power Source and Control Circuits

Illustrates power supply, turntable drive, and control circuits, detailing component interconnections.

Arm Motor and Detection Circuits

Details arm motor control, position detection, and offset error angle detection circuits and their components.

Safety Precautions

Insulation Resistance Test

Details the procedure for testing insulation resistance to prevent electric shock hazards after servicing.

Location of Controls

Control Panel Overview

Identifies and illustrates the location of all external controls and indicators on the turntable unit.

Disassembly Instructions

Removing Unit Components

Provides instructions for removing the cartridge, turntable platter, and 45 RPM adaptor.

Removing Internal Boards and Cabinets

Details the process for removing circuit boards, stator frame, and separating the main cabinets.

Removing Covers and Tonearm Assembly

Guides on removing the dust cover, tonearm position circuit, tonearm, cueing control, and indicator board.

Setting the Tonearm Drive Rope

Drive Rope Installation Procedure

Step-by-step guide on how to properly install and adjust the drive rope for the tonearm mechanism.

Replacing Chips

Chip Component Replacement

Instructions for safely removing and replacing surface-mount components like resistors, capacitors, and jumpers.

Trouble Shooting

Using the Repair Table

Describes the setup and use of a repair table for convenient troubleshooting and circuit checks.

Raising and Turning Over the Unit

Provides methods for safely raising and turning the unit to access internal circuits for inspection and testing.

Troubleshooting Specific Symptoms

Offers diagnostic steps and voltage/waveform checks for common operational issues like rotation failure or arm movement problems.

Printed Circuit Board and Wiring

Circuit Board Layout

Illustrates the physical layout of components on the main printed circuit board, including ICs and transistors.

Terminal Guides

Provides pinout information for transistors and integrated circuits used in the unit.

Overall Schematic Diagram

Complete System Schematic

Presents the complete, consolidated schematic diagram of the entire turntable system, showing all interconnections.

Block Diagram

System Functional Overview

Provides a high-level overview of the system's functional blocks and their interrelationships.

Packing Instructions

Shipping Preparation Procedure

Details the procedure for packing the unit, including folding flaps and sealing with tape for shipping.

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