Denon DP-A100 User manual

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D&M Holdings Inc.

SERVICE MANUAL

WARNING: Violators will be prosecuted to the maximum extent possible.

MODEL JP E3 E2 EK EA E1 E1K E1C

DP-A100

DIRECT DRIVE TURNTABLE SYSTEM

Ver. 3

•Some illustrations using in this service manual are slightly different from the actual set.

•Please use this service manual with referring to the operating instructions without fail.

•For purposes of improvement, speciﬁcations and design are subject to change without notice.

S0171-1V03DM/DG1010

Please refer to the

MODIFICATION NOTICE.

SAFETY PRECAUTIONS

The following check should be performed for the continued protection of the customer and service technician.

LEAKAGE CURRENT CHECK

Before returning the unit to the customer, make sure you make either (1) a leakage current check or (2) a line to chassis

resistance check. if the leakage current exceeds 0.5 milliamps, or if the resistance from chassis to either side of the

power cord is less than 460 kohms, the unit is defective.

Be sure to test for leakage current with the AC plug in both polarities, in addition, in each power ON, OFF and STANDBY

mode, if applicable.

CAUTION Please heed the points listed below during servicing and inspection.

◎Heed the cautions!

Spots requiring particular attention when servicing, such

as the cabinet, parts, chassis,etc., have cautions indicated

on labels. be sure to heed these causions and the

cautions indicated in the handling instructions.

◎Caution concerning electric shock!

(1) An AC voltage is impressed on this set, so touching

internal metal parts when the set is energized could

cause electric shock. Take care to avoid electric

shock, by for example using an isolating transformer

and gloves when servicing while the set is energized,

unplugging the power cord when replacing parts, etc.

(2) Tere are high voltage parts inside. Handle with extra

care when the set is energized.

◎Caution concerning disassembly and

assembly!

Through great care is taken when manufacturing parts

from sheet metal, there may in some rare cases be burrs

on the edges of parts which could cause injury if ﬁngers

are moved across them. Use gloves to protect your hands.

◎Only use designated parts!

The set's parts have specific safety properties (fire

resistance, voltage resistance, etc.). For replacement

parts, be sure to use parts which have the same

poroperties. In particular, for the important safety parts

that are marked z on wiring diagrams and parts lists, be

sure to use the designated parts.

◎Be sure to mount parts and arrange the wires

as they were originally!

For safety seasons, some parts use tape, tubes or other

insulating materials, and some parts are mounted away

from the surface of printed circuit boards. Care is also

taken with the positions of the wores omsode amd clamps

are used to keep wires away from heating and high

voltage parts, so be sure to set everything back as it was

originally.

◎Inspect for safety after servicing!

Check that all screws, parts and wires removed or

disconnected for servicing have been put back in their

original positions, inspect that no parts around the area

that has been serviced have been negatively affected,

conduct an inslation check on the external metal

connectors and between the blades of the power plug,

and otherwise check that safety is ensured.

(Insulation check procedure)

Unplug the power cord from the power outlet, disconnect

the antenna, plugs, etc., and turn the power switch on.

Using a 500V insulation resistance tester, check that the

inplug and the externally exposed metal parts (antenna

terminal, headphones terminal, input terminal, etc.) is

1MΩor greater. If it is less, the set must be inspected and

repaired.

Many of the electric and structural parts used in the set

have special safety properties. In most cases these

properties are difficult to distinguish by sight, and using

replacement parts with higher ratings (rated power and

withstand voltage) does not necessarily guarantee that

safety performance will be poreserved. Parts with safety

properties are indicated as shown below on the wiring

diagrams and parts lists is this service manual. Be sure to

replace them with parts with the designated part number.

(1) Schematic diagrams ......Indicated by the z mark.

(2) Parts lists ......Indicated by the zmark.

Using parts other than the designated

parts could result in electric shock, ﬁres

or other dangerous situations.

CAUTION Concerning important safety

parts

NOTE FOR SCHEMATIC DIAGRAM

WARNING:

Parts marked with this symbol zhave critical characteristics. Use ONLY replacement parts recommended by the manufacturer.

CAUTION:

Before returning the unit to the customer, make sure you make either (1) a leakage current check or (2) a line to chassis resistance check. If the

leakage current exceeds 0.5 milliamps, or if the resistance from chassis to either side of the power cord is less than 460 kohms, the unit is defective.

WARNING:

DO NOT return the unit to the customer until the problem is located and corrected.

NOTICE:

ALL RESISTANCE VALUES IN OHM. k=1,000 OHM / M=1,000,000 OHM

ALL CAPACITANCE VALUES IN MICRO FARAD. P=MICRO-MICRO FARAD EACH VOLTAGE AND CURRENT ARE MEASURED AT NO SIGNAL

INPUT CONDITION. CIRCUIT AND PARTS ARE SUBJECT TO CHANGE WITHOUT PRIOR NOTICE.

Parts for which "nsp" is indicated on this table cannot be supplied.

When ordering of part, clearly indicate "1" and "I" (i) to avoid mis-supplying.

Ordering part without stating its part number can not be supplied.

Not including General-purpose Carbon Chip Resistor in the P.W.Board parts list. (Refer to the Schematic Diagram for those parts.)

Parts marked with this symbol zhave critical characteristics. Use ONLY replacement parts recommended by the manufacturer.

Not including General-purpose Carbon Film Resistor in the P.W.Board parts list. (Refer to the Schematic Diagram for those parts.)

Part indicated with the mark "★" is not illustrated in the exploded view.

WARNING:

●Resistors

RD : Carbon

RC : Composition

RS : Metal oxide film

RW: winding

RN : Metal film

RK : Metal mixture

P : Pulse-resistant type

NL : Low noise type

NB : Non-burning type

FR : Fuse-resistor

F : Lead wire forming

2B : 1/8 W

2E : 1/4 W

2H : 1/2 W

3A : 1 W

3D : 2 W

3F : 3 W

3H : 5 W

F:±1%

G:±2%

J:±5%

K:±10%

M:±20%

Ex.: RN

Type

14K

Shape

and per-

formance

Power

182

Resist-

ance

Allowable

error

Others

*Resistance

1800ohm=1.8kohm1 8 2

Indicates number of zeros after effective number.

2-digit effective number.

1.2ohm1 R 2

2-digit effective number, decimal point indicated by R.

1-digit effective number.

: Units: ohm

●Capacitors

CE : Aluminum foil

electrolytic

CA : Aluminium solid

electrolytic

CS : Tantalum electrolytic

CQ : Film

CK : Ceramic

CC : Ceramic

CP : Oil

CM: Mica

CF : Metallized

CH : Metallized

HS : High stability type

BP : Non-polar type

HR : Ripple-resistant type

DL : For change and discharge

HF : For assuring high requency

U : UL part

C : CSA part

W : UL-CSA part

F : Lead wire forming

0J : 6.3 V

1A : 10 V

1C : 16 V

1E : 25 V

1V : 35 V

1H : 50 V

2A : 100 V

2B : 125 V

2C : 160 V

2D : 200 V

2E : 250 V

2H : 500 V

2J : 630 V

F:±1%

G:±2%

J:±5%

K:±10%

M:±20%

Z:±80%

: - 20%

P : +100%

C:±0.25pF

D:±0.5pF

= : Others

Ex.: CE

Type

04W

Shape

and per-

formance

Dielectric

strength

3R2

Capacity

Allowable

error

Others

･Units:μF.

2200μF2 2 2

Indicates number of zeros after effective number.

2-digit effective number. ･Units:μF.

2.2μF2 R 2

2-digit effective number, decimal point indicated by R

1-digit effective number.

*Capacity (electrolyte only)

･When the dielectric strength is indicated in AC,"AC" is included after the dieelectric strength value.

*Capacity (except electrolyte)

･Units:pF

2200pF=0.0022μF2 2 2

Indicates number of zeros after efective number. (More than 2)

2-digit effective number. ･Units:pF

220pF2 2 1

2-digit effective number.

Indicates number of zeros after effective numver. (0 or 1)

NOTE FOR PARTS LIST

TECHNICAL SPECIFICATIONS

210

515 max

490

320

387

465 max

53.5 280 53.5

10530 75

nTurntable section

Driving system : Servo system direct drive

Speed : 33–1/3rpm, 45rpm

Wow & ﬂutter : Less than 0.1 % WRMS

Starting time : Speciﬁed speed within 0.3 sec (for 33 rpm)

Turntable : Aluminum die-cast, 331 mm (13-1/32”) in diameter

Motor : Direct-drive motor

Speed control system : Quartz control

Load characteristics : 0 % with the stylus pressure 80 g (2.8 oz)

Speed deviation : Within ± 0.003 %

nTone arm section

Arm form : Static balance S-shaped pipe arm

Effective arm length : 244 mm (9-39/64”)

Overhang : 14 mm (35/64”)

Tracking error : within 3°

Arm height adjustable range : about 6 mm (15/64”)

Stylus pressure variable range : 0 to 4.0 g (0.14 oz)

One step 0.1 g

Suitable cartridge empty weight : 4 to 10 g (0.14 oz to 0.35 oz)

Head shell weight :

18 g (0.63 oz, including screws, nuts, nylon washers)

Cartridge spacer weight : 0.25 g (0.01 oz, 1 sheet)

nTotal

Power supply : AC 120 V, 60 Hz

Power consumption : 10 W

Maximum external dimensions :

With dust cover closed:

490 (W) ×213 (H) × 405 (D) mm (19-19/64” x 8-25/64” x 15-15/16”)

With dust cover open:

490 (W) ×515 (H) × 465 (D) mm (19-19/64” x 20-9/32” x 18-5/16”)

Weight : 15.7 kg (0.55 oz)

nCartridge (DL-A100)

Power generation method : Moving coil (MC) type

Output voltage : 0.3 mV (1 kHz 50 mm/sec horizontally)

Channel balance : within 1 dB (1 kHz)

Channel separation : more than 25dB (1 kHz)

Impedance : 40 Ω ± 20 %

Compliance : 5 × 10-6 cm/dyne (used 100 Hz record)

Stylus tip : 0.2 mm (1/64”) square solid diamond

Stylus pressure : 2.5 g ± 0.3 g (0.09 oz ± 0.01 oz)

Frequency response : 20 Hz to 45 kHz

Weight : 8.8 g (0.31 oz)

Load resistance : more than 100 Ω (40 Ω when a transformer is used)

Maximum external dimensions :

15 (W) × 15 (H) × 26.8 (D) mm (19/32” x 19/32” x 1-1/16”)

DIMENSION

DISASSEMBLY

• Follow the procedure below in reverse order when reassembling.

• If wire bundles are untied or moved to perform adjustment or parts replacement etc., be sure to rearrange them neatly

as they were originally bundled or placed afterward.

Otherwise, incorrect arrangement can be a cause of noise generation.

1. Platter

(1) Detach the rubber mat to the arrow direction.

(2) Put a ﬁnger through the round hold in the platter and lift straight up to remove the platter.

2. Bottom Cover

(1) Place the set upside down so that the tone arm base does not hit the installation rack and so that the cabinet does

not get scratched.

(2) Remove 9 screws from the bottom side.

(3) Detach the Bottom Cover to the arrow direction.

3. Main P.W.B. unit and Tone Arm Base

(1) Remove 4 screws qfrom the Main P.W.B. unit.

(2) Remove the soldering from the tone arm signal wire connected to the output board. When assembling, solder as

indicated on the wiring diagram.

(3) Holding the tone arm base down, remove the 3 screws eﬁxing the tone arm base.

4. Motor unit P.W.B and Power Trans

(1) Remove 5 screws efrom the Motor unit P.W.B..

(2) Remove the soldering from the ground wire connecting the Motor unit P.W.B. and output board.

(3) Turn the set upside down.

(4) Holding the motor unit board down, remove the 4 screws rﬁxing the Motor unit P.W.B..

(5) Holding down the nuts t, remove the 4 screws yﬁxing the transformer.

5. KNOB ASS'Y

(1) Remove the 2 screws ueach ﬁxing the KNOB ASS'Y ﬁxing plate.

(2) Remove the 3 screws ieach ﬁxing the 33/45 unit P.W.B..

(3) Pull out the KNOB ASS'Y ﬁxing plate and remove the KNOB ASS'Y.

ADJUSTMENT

Electrical Adjustment for Wow and Flutter

(1) Detach the turntable and turn over the set.

(2) Open the bottom cover.

(3) Connect a digital volt meter or tester to CN104 (3P) on the Motor P.W.B..

(4) Turn on the power. Set the speed to 33 rpm.

(5) Insert a screwdriver into R134 (variable resistor) and adjust so that the absolute values of the two digital volt meters

or testers are closest.

CN104

R134

Digital volt meter

or Tester

(1)

Digital volt meter

or Tester

(2)

CN104

①

②

③

Motor+

GND

Motor-

BLOCK DIAGRAM

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