Denon DP-59L Service Manual

ADJUSTMENT METHOD 3.
1)
e Adjusting the phonomotor section
Prepare a two-channel oscilloscope for the measuring I!nstru-
ment; make the adjustments in the following order.
CH-1 Probe connect to test point TP1 of the motor contro!
circuit board, and CH-2 Probe connect to test point TP’2.
Both probe ground terminal connect to G.
KU-5601/5602
Te
124
1)
G23 (0) (O
VR1 VR2 VR4 TP
Erecg 2)
2.
1)
2)
1. Adjusting the head gap 3.
Make sure the detection head is Perpendicular to the mag- 1)
netic coating surface of the turntable. The gap of the
detection head should be adjusted to 0.18mm. Be careful 2)
the head is not tilted to the left or the right. 3)
Note: If a gap is greater than the value, turntable will not
stop promplty, and if a gap is lesser, turntable may
revolute reversely after it stoped.
2. Lock adjustments for 45 rpm
1) Fix the arm to the armrest.
2) After pressing the start button, set the speed selector
switch to 45 rpm.
Note:
Make
sure
that
the
speed
indication
shows
0.0%.
3) Adjust VR2 so that the positions of the triangular
wave form and the pulse form TP2 are as shown in
the diagram below.
TP2
Triangular
wave form '
' ' 0.7V
{ \ '
. S35 us
TP1 '
Pulse form BB i : |
‘a t - f
t 0 slow.1
ont t
\ fast 50 ~ 55% i
100%
= 19
Lock adjustments for 33 rpm
Set the speed selector switch to 33 rpm and proceed to
adjust VR1, just as in the adjustments for 45 rpm.
e Adjusting the arm control section
Horizontal Amp Off-set Voltage Adjustment
Fix the tonearm to the arm rest. Connect the high
input resistance DC voltmeter (tester) between TP3
and TP4.
Adjust the voltage to 0 + 0.01V with VR3.
Lifter Amp Off-set Voltage Adjustment
Connect .the DC voltmeter (tester) to TP303 and
TP304 while-short circuiting the test points TP302
and TP304.
Adjust the voltage to0 + 0.1V with VR4.
End Detecting Position Adjustment
Fix the stylus point at a position 60 mm from the
center spindle by using the straight arm.
Connect the DC voltmeter (tester) to the test points
TP301 and TP304.
Adjust the voltage to 1.55 + 0.05V by adjusting the
cam with a flat headed screwdriver. The cam adjust-
ment hole is located at the back of the arm base.
Adjustment hole

Denon DP-59L Specifications

General

Drive System	Direct Drive
Motor	AC Servo Motor
Wow and Flutter	0.008% WRMS
Platter Size	300 mm
Effective Tonearm Length	244 mm
Speed	33 1/3, 45 rpm
Platter	Die-cast aluminum
Tonearm Type	Static balance type (interchangeable)