Technics SL-DL5 Service Manual

e Instruments used
1. DC voltmeter
2. Oscilloscope or frequency counter
Auto start position
Arm lift height
Adjustment procedure
1 Make sure that the tonearm is at the start position
{on the rest).
2 Adjust by turning the auto start position adjusting
screw,
Tonearm lowers inside the disc:
Turn the adjusting screw clockwise.
Tonearm lowers outside the disc:
Turn the adjusting screw anticlockwise.
* Be sure to use 30 cm record for the adjustment.
Adjusting screw
[Rear of set] ———>
Make the set as illustrated in Fig. 20.
Set the on/off switch to ‘‘on” and press the start switch to shift the tonearm inward.
Press the cueing control button so that the distance between the cartridge stylus tip
and the guide rail is 27.7 mm.
To increase the distance
turn the adjusting screw anticlockwise.
To decrease the distance
/
Cartridge Adjusting screw
Tonearm offset angle
Make the set as illustrated in Fig. 20.
2 Set the on/off switch to “on” and press
the start switch to shift the tonearm
inward.
Turn the offset angle adjusting screw so
that the arm center matches the V-
groove of the lift bar.
Adjusting
screw
Step Item Adjustment procedure
4 Servo gain and offset 1 Make the set as illustrated in Fig. 20.
voltage
2
Connect
the
DC
voltmeter
to
TP315
(Q306)
base
or
connector
CN301
terminal
@)
and TP3 (earth).
3
Set
the
on/off
switch
to
“on”
and
press
the
start
switch
to
shift
the
tonearm
inward.
4 Remove the label of the tonearm cover.
5 Completely shift the tonearm to the right. Then, adjust VR501 so that the voltage
is 3.6V. (Servo gain adjustment)
6 Set the tonearm to the center and make sure that the output voltage is 1.8V.
If
the
voltage
is
not
1.8V,
loosen
the
printed
circuit
board
setscrew
and
move
the
board
to
the
right
of
left
by
a
screwdriver
so
that
the
output
voltage
becomes
1.8V.
After
the
adjustment,
tighten
the
printed
circuit
board
setscrew..
(Offset
adjustment)
Center
(1.8V)
o~
(“Clockwise
(3.6V)
sera
Gord
ses
a driver “ou
\ é <I
EP ee
/ Label
G7 )
\ wk,
5
Clock
frequency
1
Make
the
set
as
illustrated
in
Fig.
20.
Ls
LS)
Remove the tape from the cabinet switch.
3 Connect TP7 (Q3 emitter) to TP326 (1C301 pin 14)
with clip lead or the like.
4 Connect the oscilloscope or frequency counter to
TP316 (1C301 pin 4).
Set the on/off switch to “on”.
6 Adjust VR301 so that the output waveform cycle is
40 us t 2 us.
Also, adjust VR301 so that the output frequency is
25 kHz + 1.25 kHz.
oa
40us + 2us
Frequency: 25 kHz + 1.25 kHz
Rotational speed
1 Make the set as illustrated in Fig. 20.
2 Play a 17 cm record.
3 Turn VR202 to adjust the speed to the rated speed
(45 rpm).
4 Play a 30 cm record.
5 Turn VR201 to adjust the speed to the rated speed
(33-1/3 rpm).
Note: Be sure to adjust 45 rpm first.

Technics SL-DL5 Specifications

General

Brand	Technics
Model	SL-DL5
Category	Turntable
Language	English