Denon PMA 2000 4R Service Manual

Hi-Fi Integrated Stereo Amplifier

X0141 337 NC 0204

SERVICE MANUAL

MODEL

INTEGRATED STEREO AMPLIFIER

PMA-2000

IV

R

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

16-11, YUSHIMA 3-CHOME, BUNKYOU-KU, TOKYO 113-0034 JAPAN

Telephone: 03 (3837) 5321

PMA-2000IVR

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.

SPECIFICATIONS



 POWER AMPLIFIER SECTION



Rated Output Power:

Both channel driven (8 Ω/ohms Load) 80 W + 80 W 20 Hz to 20kHz, T.H.D. 0.07 % (4 Ω/ohms Load) 160 W + 160 W DIN, 1 kHz, T.H.D. 0.7 % Total Harmonic Distortion: 0.01 % (−3 dB at rated output, 8 Ω/ohms) (1kHz)

Input Sensitivity/Input Impedance:

P. DIRECT: 0.9 V/47 kΩ/kohms Amplification factor: 29 dB



 PRE AMPLIFIER SECTION



PHONO EQUALIZER Rated Output: 150 mV

(Rec out Terminal)

Input Sensitivity/Input Impedance:

The value in parentheses ( ) refers to the input impedance when SOURCE DIRECT is ON. PHONO: MM: 2.5 mV/47 kΩ/ohms

MC: 200 µV/100 Ω/ohms CD, TUNER, DVD/AUX-1, AUX-2, 135 mV/47 kΩ/ohms TAPE-1/CD-R, TAPE-2/MD: (135 mV/12 kΩ/ohms)

RIAA Deviation:

PHONO: 20 HZ ~ 20 kHz ±0.5 dB Maximum Input: PHONO

MM: 130 mV/1 kHz

Rated Output: PRE PUT: 0.9 V



 OVERALL CHARACTERISTICS



SN Ratio (IHF A Network): PHONO (input terminals short-circuited) MM: 89 dB (at 5 mV input) (input terminals short-circuited) MC: 74 dB (at 0.5 mV input) SOURCE-DIRECT: ON CD, TUNER, DVD/AUX-1, AUX-2, TAPE-1/CD-R, TAPE-2/MD: 108 dB

Tone Control Adjustable Range:

BASS: 100 Hz ±8 dB TREBLE: 10 kHz ±8 dB



 OTHERS



Power Supply: AC 230 V, 50 Hz (Asia)

AC Outlets:

Switched × 2: 100 W (Total) Unswitched × 1: 100 W

Power Consumption: 310 W (IEC) Dimensions: 434 (W) × 180 (H) × 478 (D) mm (17-3/32" × 7-5/64" × 18-13/16") Net Mass: 24.0 kg (52 lbs 14.6 oz)

MC: 10mV/1 kHz

(Input CD 135 mV)

AC220 V, 50 Hz (China)

}

Except for China model



 REMOTE CONTROL UNIT (RC-858)



Remote control system: Infrared pulse system Power supply: 3 V DC, Two size R03 ("AAA") dry cell batteries External dimensions: 56 (W) × 105 (H) × 19 (D) mm (2-3/16" × 4-1/8" × 23/32") Mass: 70 g (Approx. 2.47 oz) (including batteries)

* Maximum dimensions include controls, jacks, and covers.

(W) = width, (H) = height, (D) = depth

* For improvement purposes, specifications and functions are subject to change without advanced notice.

2

DISASSEMBLY

(Do reverse manner when assembling.)

Top Cover

Remove 14 screws 1, 4 screws 2 and detach the Top Cover in the arrow direction.

PMA-2000IVR

1

Front Panel

1. Remove 8 screws 3.

2. Pull out the knob 4 and remove the nut, then detach the panel in the arrow direction.

1

2

Top Cover

2

1

Front Panel

3

4

Nut

3

PMA-2000IVR

Bottom Plate

Remove 24 screws 5 and detach it in the arrow direction.

Rear Panel

1. Remove 5 screws 6, 6 screws 7 and 2 screws 8.

2. Detach the Rear Panel in the arrow direction.

5

Bottom Plate

Heat Sink Ass'y

Remove 2 screws 9 and detach the Heat Sink Ass'y in the arrrow direction.

9

Heat Sink Ass'y

Rear Panel

8

6

7

4

METHOD OF ADJUSTMENTS

DC Voltmeter

Main Volume

1U-3432-2

Power Amp P.W.B. (R)

VR502

1U-3432-1

Power Amp P.W.B. (L)

VR501

Power

Trans

Power

Trans

PMA-2000IVR

IDLING CURRENT



 Setup



 Adjustment

1. Lay the unit at an ordinary position away from a direct current from an air condition or fan. Do the adjustment at a temperature between 15°C (59°F) and 30°C (86°F).

2. Set control as follows.

POWER SWITCH VOLUME CONTROL Fully counterclockwise in the minimum position ( ).

SPEAKER Terminals

1. Remove top cover. And then connect DC Voltmeter to test points of 1U-3432-1 (Lch) and 1U-3432-2 (Rch) Power Amp Printing Wiring Board.

2. Connect power cord to AC wall outlet, and turn POWER switch "ON" ( VR502 (Rch) clockwise so that the DC Voltmeter reads 12 ±0.5mV.

3. Then after 2 minutes warmup adjust VR501 and VR502 so that the DC Voltmeter reads 12 ±0.5mV.

4. And after 10 minutes warmup adjust VR501 and VR502 so that the DC Voltmeter reads 12 ±0.5mV.

OFF ( ).

(Main Volume and Semifixed resistors [VR501, 502])

Open: do not connect the speakers, dummy load etc.

). Within 10 seconds turn VR501 (Lch) and

5

INPUT

REC OUT

PRE OUT

MAIN IN

P. AMP DIRECT 0.9V(-1dB)

CD etc.135mV(-17.4dB)

PHONO MM 2.2mV(-53dB)

PHONO MC 0.18mV(-75dB)

PHONO

CD

TUNER

DVD /AUX-1

AUX-2

TAPE-1 /CD-R

TAPE-2 /MD

RIAA

MC

MM

47k 100

+

-

BASS

BUFFER

BALANCE

TREBLE

SOURCE

OFF

ON

DIRECT

MAIN VOLUME

POWER AMP DIRECT

FLAT AMP

TONE

POWER AMP

PROTECTOR

SPEAKER A (MAIN)

SPEAKER B (BI WIRING)

HEAD PHONE

POWER AMP

POWER GND

VOLTAGE

REGULATOR

REC OUT SELECTOR

OFF ON

EQUALIZER

TONE AMP

POWER AMP

FLAT AMP

PROTECTOR

&

RELAY

+16V

-16V

GND

+16V

-16V

GND

+16V

-16V

GND

+30V

+12V

-30V

GND

+

AC PLUG

80W/8ohm 25.3V(28dB)

40dB

-40dB

-50dB

-60dB

-70dB

-80dB

20dB

-20dB

10dB

-10dB

0dB

30dB

-30dB

(dBV)

BLOCK/LEVEL DIAGRAM

PMA-2000IVR

1 5678

32

4

A

B

C

D

E

6

PMA-2000IVR

21 22

(VASS)V

SS

VAREF

20 23

XOUT P60(AIN0)

19 24

XIN P61(AIN1)

18 25

RESET P62(AIN2)

17 26

TEST P63(AIN3)

16 27

P00 P64(AIN4)

15 28

P01 P65(AIN5)

14 29

P02 P66(AIN6)

13 30

P03 P67(AIN7)

12 31

P04 P10(INT0)

11 32

P05 P11(INT1)

10 33

P06 P12(INT2/TC1)

934

P07 P13(DVO)

835

(INT3/TC3)P70 P14(PPG)

736

(INT4)P71 P15(TC2)

637

(PDO/PWM)P72 P16

538

(SCK)P73 P17

439

(SI)P74 P20(INTS/STOP)

340

(SO)P75 P21(XIN)

241

(HSCK)P76 P22(XOUT)

142

(HSO)P77 V

DD

Power Supply Terminal

Reset I/O Terminal

Test Terminal

V

DD

V

SS

RESET

TEST

High Freq. Oscillator Connection Terminal

XIN

P22

P20

I/O Port

VAREF

ALU

PSW Stack Pointer

Interrupt Control Circuit

Program Counter

Program Memory

(ROM)

Data memory

(RAM)

Unviersal register Blank

Flag RBS

System Control Circuit

Standby Control Circuit

Timing Generator

Time Base

Timer

16 bit

Timer/Counter

TC1

P2

8 bit

A/D Converter

P6 P0 P1 P7

TC2

8 bit

Timer/Counter

TC3 TC4

8 bit Serial

Interface

Command

register

Command

decoder

SIO HSO

Watch Dog

Timer

Clock

Generator

High Freq.

Use

Low Freq.

Use

Analog

Vref

XOUT

~

P67

P66

(Analog Input)

I/O Port

~

P07

P00

~

P17

P10

~

P77

P70

~

P65 (AIN5)

P60 (AIN0)

~

SEMICONDUCTORS



 IC’s



TMP87CC46N-4C08 (IC901)

TMP87CC46N-4C08 (IC901) Terminal Function

Pin No.

1 P77 O C AC POWER RELAY DRIVE

2 P76 O C

3 P75 (SO) O C

4 P74 (SI) O C

5 P73 (SCK) O C

6 P72 O C MUTE/STAND-BY LED DRIVE

7 P71 (INT4) O C MOTOR VOLUME UP

8 P70 (INT3) I C REMOTE CONTROL SIGNAL INPUT

9 P07 O C TAPE-2 LED, ARELAY DRIVE

10 P06 O C TAPE-1 LED, ARELAY DRIVE

11 P05 O C

12 P04 O C AUX-2 LED, ARELAY DRIVE

13 P03 O C DVD/AUX-1 LED, ARELAY DRIVE

14 P02 O C TUNER LED, ARELAY DRIVE

15 P01 O C CD LED, ARELAY DRIVE

16 P00 O C PHONE LED, ARELAY DRIVE

17 TEST to VSS

18 RESET RESET

19 XIN X’tal

20 XOUT X’tal

21 Vss (VAss) GND

22 VAREF to VDD

23 P60 I C MODEL SETTING INPUT

24 P61 I C

25 P62 I C

26 P63 I C FUNCTION SELECTOR SW INPUT

27 P64 I C

28 P65 O C MUTING SIGNAL INPUT

29 P66 O C

30 P67 O C

31 P10 (INT0) I C PROTECTOR INPUT

32 P11 (INT1) I C POWER OFF

33 P12 (INT2) O C MOTOR VOLUME DOWN

34 P13 O C

35 P14 O C

36 P15 O C

37 P16 O C

38 P17 O C

39 P20 STOP O C STOP MODE CANCEL

40 P21 O C

41 P22 O C

42 VDD +5V

NOTE: Pin No. : Terminal number of microcomputer.

Port Name

Type

Port Name : The name entered on the data sheet of microcomputer.

I/O : Input or output of port.

"I" = Input port

"O" = Output port

Type : Composition of port in case of output port.

"C" = CMOS output

Function : Function and logical level explanation of signals to be interface.

FunctionI/O

7

PMA-2000IVR

LB1639 (IC902)

TOP VIEW

V

IN1

1

2

GND

3

CONT

V

4

V

IN2



OTHERS

OUT1

8

V

CC

7

N.C.

6

5

OUT2

V

IN1

1

GP1U27X (Remote Control Sensor) (IC103)

TOP VIEW

BA4558 (IC701)

V

OUT1

V

OUT2

5

8

REF

V

CC

V

7

V

CONT

3

GND

2

V

IN2

4

N.C.

6

NJM2082D (IC201)

A OUTPUT

A –INPUT

A+INPUT

1

2

3

V

4

V

8

B OUTPUT

7

2

6

B –INPUT

B +INPUT

5

Vcc

Vout

GND



TRANSISTORS

2SA933S (S) 2SA988 (E/F) 2SA1145 (O/Y) 2SA1546 (M/L) 2SB1328 (P) 2SC1740S (S) 2SC1841 (E/F) 2SC2705 (Y) 2SC3421 (O/Y) 2SC4001 (M/L) 2SD2004 (P)

FRONT

VIEW

C

E

2SA1837 (Y) 2SC4793 (Y)

B

Head Amp

FRONT

VIEW

BCE

Limiter Amp

Detector &

BPF

Comparator

DTA114ES DTC114ES DTC143ES DTC143ZS DTC144WS

FRONT

VIEW

C

B

E

Integrator

GND

DTA114ES

Hysteresis Comparator

Vcc

PNP Type

Vout

DTC114ES DTC143ES DTC143ZS DTC144WS

NPN Type

C

R1

B

DTA114ES

R1

10kohm

R2

10kohm

DTC114ES

DTC143ES

DTC143ZS

DTC144WS

R2

R1

10kohm

4.7kohm

4.7kohm 47kohm

47kohm

R2

10kohm

4.7kohm

22kohm

E

8

PMA-2000IVR

11EQS06 31DQ06 1SS270A

HZS2B-1 HZS3B-2 HZS5C-1 HZS9B-1 HZS11A-1 HZS12A-1 HZS30-1 MTZJ3.3A MTZJ7.5A MTZJ7.5C MTZJ18A

SLR-56VC (Red)

TOP VIEW

2SJ78 2SK215

FRONT

VIEW

GSD

2SK373 (Y)

FRONT

VIEW

SGD

2SK184C (GR/BL) 2SK369 (BL/GR)-C

FRONT

VIEW

DGS

2SK2967

FRONT

VIEW

GDS



DIODES (LED included)

FCH20A15

FRONT

VIEW

AKA

FRH20A15

FRONT

VIEW

KAK

SF0R3G42

A

G

K

PTH9M04BD222TS2F333

FRONT

VIEW

GAK

SEL2E10C (Blue)

TOP VIEW

SIDE VIEW

SLR-342MG (Green)



THYRISTOR



THERMISTOR

9

PRINTED WIRING BOARDS

PMA-2000IVR

1

2

1U-3432 POWER AMP P.W.B. UNIT Ass'y

1 5

3

4

5

1

5

76

15

8

A

15

18

1 5

1 3

1 8

B

8

15

12

1

4

5

110

C

D

16

1

16

18

1 5

14

13

110

10

1 2

COMPONENT SIDE

E

10