Nippon Columbia DP-51 F User manual

FUll Y AUTOMATIC
DIRECT DRIVE TURNTABlE SYSTEM
DP-51 F/DP-52F
OPERA TING INSTRUCTIONS
u.s. & Canadian models do not include cartridge
----.._--.
---~-- .
~----
NIPPON COLUMBIA CO., LTD.

IMPORTANT TO SAFETY
WARNING:
TO PREVENT FIRE OR SHOCK HAZARD, DO NOT EXPOSE THIS APPLIANCE
TO RAIN OR MOISTURE.
CAUTION: 1.
Handle the power supply co rd carefully
Do not damage or deform the power supply cord. If it is damaged or deformed,
it may cause electric shock or malfunction when used. When removing from wall
outlet, be sure to remove by holding the plug attachment and not by .pulling
the cord.
2. Do not open bottom coyer
ln order to prevent electric shock, do not open the bottom coyer. If woblems
occur, contact your DENON dealer.
3. Do
not insert anythin. inside
Do not insert metal objects or spiIl Iiquid inside the record player. Electric shock
or malfunction May result.
ModeIDP. Seriai No. _
Please, record and retain
the Model name and seriai number of your set shown on the
rating label.
IMPORTANT
(BRITISH MODEl ONl Y)
The wires in
this mains lead are coloured in accordance with the following code:
Blue: Neutral
Brown: live
As the calours of the wires in the mains lead of this apparatus May not corre·
spond
with the coloured markirigs identifying 'the terminais in your plug proceed
as follows.
The wire which is coloured blue must be connected to the terminal which is
marked with the letter N or coloured black.
The
wire which is coloured brown must be connected to the terminal which is
marked
with the letter l or coloured red.
fOR YOUR SAfETY
(AUSTRALIAN MODEl ONl Y)
To ensure safe operation, the three·pin plug supplied must be inserted
only
into astandard three·pin power point which is effectively earthed
through the normal household wirÎng.
Extension
cords used with the equipment must he three·core and be
.
co((ectly wired to provide cOMection to earth. Wrongly wired extension
cords are a major cause of fatalities.
The tact that the equipment operates. satisfactorily does not imply
that the power point is earthed and that the installation is completelysafe.
For
your safety. jf in any doubt about the effective earthing of the power
point. contact a qualified electrician.

-TABLE OF CONTENTS-
FEATURES ..............................................•..................•.•........ 2
MAIN SPECIFICATIONS .•. _........................................................... 2
NAMES OF PARTS AND FUNCTIONS................................................. 3
HOW TO ASSEMBLE _............................................. 4
HOW TO CONNECT __ _4
ADJUSTING THE STYLUS FORCE AND THE ANTI·SKATING 4
HOW TO PLAY __ 5
REPLACEMENT OF PARTS AND READJUSTMENT _................................. q
WHEN TROUBLES ARISE Cov.
Please check
to make sure the following items, aside from the main unit, are packed ioto the
carton. 1. Turntable platter 2. Turntable mat 3. 45rpm record adapter 4. Instrucction manual.
5. Hin~e for dust caver
'.FEATURES'
1. The use of a microprocessor controlled,
contactless servo tonearm
An innovative microprocessor controlled, con·
tactless· servo tonearm ensures safe. easy to
use automatic operations with little 1055 in
sound quality.
2. Q·damping method
(Dynamic servo tracer)
Law frequenc;y resonance caused by cartridge
compliance and the tonearm mass is electronic-
ally damped horizontally and vertically. Crosstalk
and inter·inodulation distortion are effectively
suppressed. The dynamic servo tracer maximizes
the P.erformance of the fow mass tonearm and
realizes excellent stability of sound image with
IiUle nois_e or distortion.
3. Low mass straight arm
This arm (s fully capable of maximizing the
performance of high compliance cartridges with
outstanding tracing ability. Even with the newest.
high grade records.
its tracing ability is out·
standing.
4. Record slze detector and the automatic
speed selector mechanism
The record size and the speed are automatically
set when using LP records (33 1/3 rpm) or single
records
(45 rpm). When there are no records
placed on
the turritable, the tonearm does nat
mave. even if the start buttan is pressed. This
protects the stylus tip from ynexpected damages.
5. The use of DENON quartz on bi·direc·
tian al servo
Speed accuracy is unequaled, with the cam-
bination
df amagnetic pulse detectar and a
quartz lock, with the addition of abi-directional
servo.
cantrolled fully
20-30 kHz
Head shell :
Effective length: 244 mm
Overhang: 14 mm
Tracking error: Within 2.5
0
Automatic EJectronically
mechanism automatic
Q·damping
method:
Electronic: horizontal vertical
directions
Adjustable stylus force range:
0-3 g(1 scale~O.l g)
Specially hardened resin head
shell lApprox.
3.3 g)
Suitable cartridge weight range:
Approx. 3-12 g
(including nuts, screws)
Anti-skating :Electronic;ally controlled
Cartridge section (Only for those units with a
set cartridge)
DL·50
Output voltage: 2.S mV
Frequency
response:
Stylus force: 1.8 ±0.3 g; MM type
•The above specifications are subject to change
without notice.
17W
130x455x424 (HxWxD)
Approx. 9 kg
Dynamically balanced. straight
tube tonearm
Motor:
Speed control
system .
Drive system Serve controlled direct drive
Turntable speeds 33-1/3 rpm. 45 rpm
Wow
flutter Belew 0.01% wrms
(serve
system)
Selow 0.02% wrms (JIS)
Over 78dS (DIN-S)
Normal speed within 1.8
seconds (at 33-1/3 rpm)
Aluminum die·cast:
300 mm
diameter
AC 5'erve motor
Turntable:
SIN ratio:
Rise time:
Power
consumtlon :
Dimensions:
Weight:
Arm type:
Speed servo by frequency and
phase servo control
Load Influence: 0% (80 g stylus force, outer
most groove)
Brake system: Electronic brake
Speed
deviation: Below 0.002%
Power supply: Sa/60Hz, Voltage is shawn on
the rating label at the back
of cabinet.

-
@
Oust cover
Counter weight
@
@
Tonearm
STOP
START
[!J Power switch _
This turns the power supply on and off. Push
the buttan down until it lacks in position. The
power will turn on and the lock indicator
('DENON') will right up. When turning the power
off, press the buttan unti1 the lack is disengaged.
ln addition, always
retum the tonearm to the arm
rest and hold il in place with the clamp.
~ Speed selector $witch ~
Set to the desired record speed.
33-1/3rpm records "33"
45rpm records "45"
ln automatic play, the switch is set to "33'
for 30cm records and "45" for 17cm records.
[!] tock indicator _
The "DENON" will Iight up when the power is
on. During play, the lamp will flicker until the
pr'oper turntable speed is reached. Once the
proper speed is obtained, the lamp will, again,
stay lit.
o Arm lifter butta"_
This but ton is used to raise and lower the arm
during play, or when playing the records manually
ΠRepeat butta" ~
Press this buttan when playing records re·
peatedry: the "REPEAT" ramp 'llili be lit.
6 Start butta"
Press this buttan when starting the records
autamatically.
7
Stop butta"
Press this buttan when stopping the record
during play.
~
This is u.sed ta adjust the stylus force.
r;-~
3$(Wlth th-e OP·52, 1000~ate play is possible by using
the start and stop buttons. Please refer to page 6
concerning the method of locate operations.

Power cord
Output cord
!'l
-,-.,----,---_._-
~
r...
._.
. ~.~ -.:
-,. 1-1'-
1 ~·'i:~t •• ;.' i.iH 1 1
'-ft:' ~ ... ~ ... ,. .. ... ,,
L " 00 •"i'
1 •• ""~~;!.. .. ,
Make adjustments with the power supply
turn'ed
off.
1. Release the arm clamp
Hold the tonearm and move· the arm clamp
in
the direction of the arrow.
~til ,
MmreS~m clamp
2. Move the tonearm
Take the tonearm off the arm rest and move
it to a position between the arm rest and the
turnfabre.
Ground wire
1. Connect the left (L) and the right (R) output
wires ta the respective l'PHONO" input termi.-
nais
of the amplifier ta be used. Secondry,
connect
the grQund wire (this wire, is together
with the output wires) to the "GROU ND"
terminal of the amplifier.
2. Connect the AC power plug ta the AC wall
outret.
1 '~. 7i "
7. Attach dust caver and hinges
11Hinge
r~ 1. Insert the dust cov'e
4
~
\ hinges into the dust
_caver.
, . -
2. Hold both sides of
• . the dust caver and
~
'~ ~nsert the. hinges
(
~~=~~~~~~~~~i lOto the hlnge
Cl catchers of thé
base until it stops.
Plug in
the cOnnector
portion of the head shell
ta the front end of the
tanearm. Then fasten
the fixing screw.
1) Insert the turntable platter onto the
matar shaft.
2) Ta place the turntable mat. allign the
slat windows and fit the protruding sections
of the turntable mat inta the bigger quare
hales on
the platter.
Note: Take caution as not ta scratch the
magnetic coating on the inner sur'faces of
the turntable.
4. Mounting of the cartridge
For models without attached cartridge, mount
your cartridge by following the procedures on
the cartridge r.eplacement installation on page 8.
5. Mount head shell
g-- Fixing screw
~
losert llùl' protruding
section in the square hale
~ iurnlable mat
. ~ ,,
~"
"
"
Allign the
wi"dowiO
1. Remove the packing material
Remove the packing material from the ,arm
counter weight section, dust cover and the
cabinet.
2. Take the transportation screw off
Note: The screws must be taken off ta
ensure normal operations. Keep these screws
for future use, when transferring residence,
etc.
3. Install the turntable platter and the
turntable mat
6. Adjust the insulator height
The height of the insurators (rubber feet) of
this turntabJe can be adjusted by rotating them.
Adjust the insulator height5 $0 that the turntable
is horizontally placed on the surface where it is
to bé plàced.

3. Balance the arm horizontally
Rotate the counter weight knob until the
stylus tip remains at the same height as the
record surface, when yeur hand is off.
Rotate the counter weight knob in the
direction of the arrow.
~;;;"'~~~;ti~~~?Z?;o;u~nter weight knob
ç:;; ~
'~'i'
4. Return the tonearm to the arm rest
Return the tonearm ta the arm rest and hold
it in place with the clamp.
5. Adjust the stylus force and the anti·
skatina
Rotate the stylus force knob and set the
stylus force of the cartridge ta be used by
alligning the number ta the line. (The illustra·
tian shows the stylus force set at 1.8g) The
anti-skating
is automatically adjusted at the
same time.
-0
STYLUS FOASE
ANTI SKATING
When adjusting the stylus force and the
anti-skating
Apply the suitable stylus force for the
cartridge by consulting the cartridge instruc-
tion manual.
~~
Rotate the Q-damping knob and set it ta the
same number as the cartridge st yius force. (The
illustration shows a1.8g
stylus force cartridge
being used.)
-O·
o .
..
Q-OAMPING
Although the Q·damping varies with the
compliance of the cartridge, this turntable is
designed
50 that asuitable amount of damping
can be obtained
by simply adjusting the number
ta the same position as the st yius force .
. HOW TO PLAY
Before playing
<D Turn the power supply of the amplifieron and
set the selector switch/knob to "PHONO".
® Set the record and remove the stylus caver.
®Turn the power supply on.
@) Release the arm clamp.
• For automatic play
(j) Press the start switch. ("ST ART" li.ghts)
The tonearm will
move over ta the record
and play will
start.
@) When the play finishes, the tonearm will
retum ta the arm rest and the turntable will
stop. (When the reDeat switch is off). When
the repeat switch is on ("REPEAT" Iights) the
record will be played again.
Note:
•The speed selector automatically sets the
record speeds for 33-1/3 LPs (3Q cm) and 45
singles tl7cm). When playing records other
than the above mentioned sizes, set the speed
by pressing the speed selectar button after
pressing the start button.
The arm may move up and down when the
power supply is turned on, but this is not a
malfunction.
•
If strong light .(direct sunlight, light fram
lamps) hits the turntable mat, the turntable
may
not operate properly. Please take care
not ta use the turntable under strong lighting
conditions .•
For manual play
•When playing records trom the middle
•When
the record size is not standard
(j) Set the arm lifter button to "up" (! ) ..
<ID By hand, place the tonearm over the desired
position on
the record.
<ID The turntable will start ta retate when the
desired speed button is pressed.
@When play finishes, the tonearm will return
automatically as in the automatic play mode.
Note:
The arm lifter mechanism operates magneti·
caliy. Thus,
it will lower even in the up (! )
position if force is applied. Gently push the
tonearm in the horizontal direction when

moving it, taking care not to damage the
record and the stylus.
• Wh en playing transparent records
Rotate the turntable mat 180
0,and play
the
record with the square windows of th~ turntable
covered.
(follow the same procedures when
playing warped records.
Caution: (when
the slot windows are blinded)
When
the start buttan is pressed, the st yI us
tip will al ways lower at the 30 cm position.
When playing records
with adiameter other
than 30cm, al ways play the records manually
with repeat off ta avoid st yi us tip damage.
• For repeated play
Set the ropeot button on C"REPEAT" Iights).
The record will be played repeatedly, until
the
repeat is disengaged. To disengage the repeat,
press
the repeat button again.
• When stopping during play
@Press the stop button (with the Dp·52F,
press
firmly). The stop lamp will light up.
The tonearm will return
ta the arm rest and
the turntable will stop.
@) Or else, push the arm lifter buttan ta the
up ( !) position.
The tonearm will rise above
that position.
The
turntable will continue to rotate.
• Locate play for the DP-52f
With the DP-52F, in addition ta the above
mentioned operations,
the start and stop button
can be used to move the tonearm to the desired
position above
the record.
Follow
the chart below to operate.
Note: The DP-52F uses a double action stop
switch. Two diffent fun ct ions are facilitated;
when presst firmly. (STOP Iights up) and when
presst Iightly.
Tonearm operation
Button operation
Start button
Stop button
Tonearm position Arm rest
Over record Arm rest
Over record
Push To the
record
Push
To
the
record To the record lightly
starting position
starting position starting position
Push
Return to the
firmlv arm rest
Opera- FORWARD (Keep pushing
lightly)
tion
Keep
(Tonearm stops
BACKWARD
pushing
at the position
(Tonearm
stops at the
where the button
position where the but·
is released) ton is released)
of the stylus is recommended, as aworn st yi us
tip may cause noise and damage to the records.
•
Be sure ta specify "DENON DSN·60" when
purchasing areplacement stylus.
DENON does
not assume responsibility for performance losses
or malfunctions caused by the use of other
$tyli.
• How to replace
<D Lassen the locking screw at the cartridge
end of the tonearm, and take out by pulling the
head
sheH in the direction of the arrow.
<ID Hord the st yius assembly and gentry take it
out by pulling it up diagonally.
@ Set the new stylus assembly by inserting it
as far as it will go.
Replacement stylus (DSN-60)
Lock;ng ~:'"'' ~~
screw ,~. ct
Head shell
St yI us assembly
Adjustment screw
o
u
u
-
Ir Ir
1
-
Stylus replacement
(For models with the attached cartridge)
The stylus tip lifé of the attached cartridge
is approximately 500 haurs. Earlier replacement
Adjusting the lowering position of the stylus
tip
When the lowering position of the stylus tip
is not correct, adjust it by using the fIat head
screwdriver
ta turn the adjustment screw.
•When
the stylus tip lowers ta the inside:
turn counterdock wise.
•When
the stylus tip lawers ta the outside :
turn c1ockwise.

Cartrldge replacement
It ls possible ta use a cartridge weighing 3-
12 g(including nuts, screws) when attaching it ta
the headshell of this turntable. (When purchasing
only the headsheli, specity the "DENON" pel·
50".)
The calar designatian of the lead wires are as
fallows. Please be cautious as
not ta make any
misconnectians.
-red
right channel (R)
-
white Ieft channel (L)
•green right channel ground (RG)
•blue
Ieft channel ground (LG)
CD Laasen the Jacking thumb screw at the
cartridge end of the tonearm, and pull off the
head shell
frantward.
®The averhang for this turntable is 14 mm.
When installed according
ta the diagram, the
appropriate overhang will be obtained.
<ID After the cartridge is mounted praperly,
plug in
the head shell ta the tonearm and
secure
it by the thumb screw.
Not. :
When the cartridge is replaced. al ways make
sure to readjust the horizontal balance, stylus
force and the Q·damping.
Attach vertically
No sound
When troubles arise, check the following items before considering them as malfunctions.
Turntable does not start when start button 15 pressed.
The tonearm does not move
-Is the power switched on?
- 15 the arm clamp released? .................•...•........ Reter to page 4
The tonearm returns to the arm rest
•Is atransparent record being played?
•Is
the record warped?
The tonearm moves ta the 30cm position. when playing a 17cm record.
·15 the turntable mat properly set? Refer ta page 4
The stylus tip does not lower onto the record.' .
•Is
the proper styJus force belng applied? Refer to page 5
The stylus tip does not lower on the desired position.
-15 the cartridge properly instalJed on tne head shell? Refer ta page 6
·15 the turntable placed horizontally? Refer to page 4
When no irreguferities are found for the abave items,
adjust the lowering position of the st yius tip Refer ta page 6
·Is the tonearm and the cartridge connected properly? ... Refer ta page 6
•Are the
output wires properly connected ta the amplifier? .. Refer to page 4
-Are the amplifier knobs!switches properly selected, adjusted?
Hum noises
•Is the groued wire of the output wire properly connected
ta the amplifier? Refer ta page 4
•Are the
output wires properly connected? _ ..
-15 the head sheJl firmly held with the locking screw? Refer ta page 6
The stylus jumps
• 15 the st yius force set properly? Refer ta page 5
• 15 the record warped, scratched?
-Are there any considerable amount
of dust on the stylus tip?
The arm does not move during play
•Is the record scratched?
- 15 something hitting the tonearm ?
Little sound
-Is the amplifier switched and connected properly for the
type of cartridge (output) being used?
The record size is not detected
-Are any strong rays of light hitting the turntable sheet?
(Direct sunlight, light from lamps, etc.) Refer ta page 5
NIPPON COLUMBIA CO., LTD.
N'J. 14·14. AKASAKA 4-CHOME MINATO·KU. TOKYO 107 JAPAN
82. 65118202203
P'lnted ln JAPAN