Denon DP-59L Service Manual

e TERMINAL FUNCTION EXPLANATION OF
LF3735 PLL SPEED CONTROL
The serial numbers on the left hand side indicate the ter-
minal numbers of LF3735.
1) LCDsegment output $8
=
;
=
Output
of
converted
_
-
|
ote
pulses
for
indicating
=
e
ae
turntable
revolution
33
2
=e
or
45
and
their
+9.9%
ot
:
a
variable
revolution
range.
7)
tCDcommon
output
H2
8)
i‘
H1
9) D/A output
Output of periodic pulses inversely proportional to oscilla-
tion frequency.
: one
| | |e9 = 5V | |
| 3.20ms |
ene
| feg
| 3.55ms |
f oo
| | leo | |
| 3.91ms |
Speed is slow
fr > fv
Speed is same
fr = fv
Speed is fast
fr << fv
10) UP KEY input
Pushing the HIGH button momentarily shifts the
input terminal from L to H and to increase the speed
0.1%.
Hold pushing the HIGH button increases the speed
0.4% per second unti! releasing the button, then the
speed is set at this value. |
11) DOWN KEY input |
Each time to push the LOW button momentarily
shifts the input terminal from L to H and to de-
Crease the speed 0.1%.
Continuousely pushing the LOW button decreases
the speed 0.4% per second until releasing the button,
then the speed is set at this value.
12) NORMAL KEY input
The speed is set to 0.0% when NORMAL KEY
input terminal shifts from L to H.
13) 45/33rpm change input
Input terminal for LCD revolution indication.
H = 45rpm; L = 33rpm
14)
15)
16)
17)
X‘tal input
By connecting 4.5MHz crystal oscillator to pins 14)
15) oscillates standard 4.5MHz frequency.
3.8V
e14
OV
+
0.22us
X‘tal input
By connecting 4.5MHz crystal oscillator to pins 14)
15) oscillates standard 4.5MHz frequency.
4.5V
e15 |
OV
| '0.22us |
P terminal
The terminal normally not used.
compensate internal
(VCO).
Reference frequency oscillation output
The terminal to
voltage controlled oscillator
fo = 4.5MHz +9.9% variable range
| || | OV 7
T = 1/10
18) Power supply voltage 4
19)
Vpp = 2V
Voltage controlled oscillator (VCO) input
+9.9%| 0% | -9.9%
3.43V | 3.08V | 2.78V
Approx. 3.08VDC input for speed 0.0%

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)