Harman Kardon PA-2000, PA-4000 Service manual

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The Harman Kardon Model PA 2000 / PA 4000 Manual A MULTICHANNEL AMPLIFIER

CONTENTS

TECHNICAL SPECIFICATIONS … … … … ..03 ALIGNMENT PROCEDURES … … … … … . 05 BLOCK DIAGRAM … … … … … … … … … ..… 06 DISASSEMBLY PROCEDURES … ….. … … 08 EXPLODED VIEW.. … … … … … … … .. … … ..11 PRINCIPAL SCREW LOCATION... …... …..13

PARTS LIST… … … … … … … … … . … .. … … .18 IC BLOCK DIAGRAM … … … … … … … … … .48 PRINTED CIRCUIT BOARDS … … … … .. …61 SCHEMATIC DIAGRAMS … … … … .. … … ..67 WIRING DIAGRAM … … … … … … … … … … 73 PACKING MATERIAL … … … … … … … … … 76

harman/kardon

Parts and Service Office

80 Crossways Park West, Woodbury, N.Y. 11797

Printed in Korea

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Power Output

PA 4000

TECHNICAL SPECIFICATIONS

Standard Operation… 8 × 45 watts @ 8 ohms, 20 Hz ~ 20 kHz, < 0.07% THD, all channels driven Bridged Mode 1… … … ..2 × 100 watts plus 4 ×45 watts @ 8 ohms, 20 Hz ~ 20 kHz, < 0.07% THD, all channels driven Bridged Mode 2… … .4 × 100 watts @ 8 ohms, 20 Hz ~ 20 kHz, < 0.07% THD, all channels driven

High-Current Capability… … … … … … … … … … … … … … … … … … … … … … … … … … ±45 amps

Frequency Response… … … … … … … … … … .… … … … … … < 1 Hz ~ 200 kHz, ±3 dB at 1 watt

Signal-to-Noise Ratio… … … … .… … … … … … … … … … … … ...… ..110 dB at rated power 45 watts

THD/IMD… … … … … … … … … … … … … … … … … … … … … … … … … Less than 0.07% at rated output

Power Bandwidth… … … … … … … … … … … … … … … … … … … … … … … … ..… … ..<1 Hz ~ 100 kHz

Input Impedance… … … … … … … … … … … … … … … … … … … … … … … … … … … … … … ..47K ohms

Input Sensitivity… … … … … … … … … … … … … … … … … … … … … … … … … ..1 volt for rated output

Remote Trigger Voltage… … … … … … … … … … … … … … … … … … ...… … … … 3 ~ 30 volts AC/DC

Remote Trigger Impedance… … … … … … … … … … … … … … … … … … … … … … … … … 20K ohms

Keypad IR Sensor DC Supply… … … … … … … … … … … … … … … … … … … … … … … 12 V, 10 mA

Dimensions (H ×W ×D)… … … … … … … … … … … .… … ...… 7 ~ 5/16” ×17 ~ 3/8” ×18 ~ 5/16”

185mm ×442mm ×465mm

Weight… … … … … … … … … … … … … … … … … … … … … … … … … … … … … ..… … … … .47 lb / 21.4 kg

Power Requirements… … … … … … … … … … … … … … … … … … … … … .… 120 VAC, 50 Hz / 60 Hz

600 watts, maximum

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2. Alignment Procedure

PA 4000

1. Test Equipment Required

-DC Voltmeter Note: Disconnect external Audio Generator prior to alignment.

2. Preparation

1. Confirm the AC Power Voltage.

2. Cool the Amplifier enough prior to alignment.

3. Disconnect external Audio Generator and Road Registers.

4. ‘POWER CONTROL MODE’ Switches on rear Panel: ‘ON/KEYPAD’ position.

5. ‘AMP MODE’ Switches on rear Panel: ‘NORMAL’ position.

3. Adjustment and Test Points

1. Test Points: J401, J501, J451, J551

2. Adjustment Points: VR401, VR501, VR451, VR551 Note: These Points are on PCB ‘A1A-566’

VR551/ J 551 VR451/ J451 VR401/ J401 VR501/ J501

A1A-566 PCB ASS’Y

4. Alignment Table

Step Equipment Test Point

Voltmeter

J401 VR401 26 23~30 22~32

J501 VR501 26 23~30 22~32

J451 VR451 26 23~30 22~32

J551 VR551 26 23~30 22~32

Adjustment

Point

Target Nominal Limit

Adjust for( mV)

Note: The Adjust for is after 1hour’s value of each test point.

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PA 2000

3. BLOCK DIAGRAM

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BLOCK DIAGRAM

PA 4000

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CONNECTOR(CP3) ON THE MICOM P. C. BOARD(f).

EXPLODED-VIEW INSTRUCTION MANUAL

DISASSEMBLY PROCEDURES

PA 2000 / PA 4000

4. DISASSEMBLY PROCEDURES

<1> CHASSIS-TOP(20) REMOVAL. REMOVE 9 SCREWS (A : 5EA, J : 4EA) AND REMOVE THE CHASSIS-TOP(20)

<2> FRONT PANEL ASS'Y(AA) REMOVAL.

1. REMOVE THE CHASSIS-TOP(20), REFERRING TO THE PREVIOUS STEP<1>

2. DISCONNECT THE CONNECTOR(CP 10, CARD-CABLE) ON THE FRONT P. C. BOARD(C) FROM CONNECTOR (CW 10) ON THE LED P. C. BOARD(a).

3. DISCONNECT THE CONNECTOR(CP15, 4P) ON THE POWER P. C. BOARD(b).

4. REMOVE 12 SCREWS(A:6EA, B:2EA, C:4EA) ON THE FRONT PANEL(1) AND THEN REMOVE THE FRONT PANEL ASS'Y(AA)

<3> CHASSIS-FRONT(7) REMOVAL

1. REMOVE THE CHASSIS-TOP(20), REFERRING TO THE PREVIOUS STEP<1>

2. REMOVE THE FRONT-PANEL ASS'Y(AA), REFERRING TO THE PREVIOUS STEP<2>

3. DISCONNECT THE CONNECTOR(CP11) ON THE FRONT P. C. BOARD(c) FROM

4. DISCONNECT THE CONNECTOR(CP17) ON THE FRONT P. C. BOARD(c)

5. DISCONNECT THE CONNECTOR(CP18) ON THE FRONT P. C. BOARD(c), FROM LEAD WIRE(2P) ON THE POWER-TRANS(12)

6. DISCONNECT THE CONNECTOR(CP19) ON THE FRONT P. C. BOARD(c), FROM LEAD WIRE(2P) ON THE POWER-TRANS(12)

7. REMOVE 11 SCREWS(E) AND THEN REMOVE THE CHASSIS-FRONT(7)

<4> CHASSIS-SIDE(11) REMOVAL

1. REMOVE THE CHSSIS-TOP(20), REFERRING TO THE PREVIOUS STEP<1>

2. REMOVE THE FRONT-PANEL ASS'Y(AA), REFERRING TO THE PREVIOUS STEP<2>

3. REMOVE THE CHASSIS FORNT, REFERRING TO THE PREVIOUS STEP<3>

4. REMOVE 2 SCREWS(A) ON THE CHASSIS-BACK(18) AND THEN REMOVE THE CHASSIS-SIDE (11)

<5> CHASSIS-BACK(18) REMOVAL

1. REMOVE THE CHSSIS-TOP(20), REFERRING TO THE PREVIOUS STEP<1>

2. REMOVE THE FRONT-PANEL ASS'Y(AA), REFERRING TO THE PREVIOUS STEP<2>

3. REMOVE THE CHASSIS FORNT, REFERRING TO THE PREVIOUS STEP<3>

4. REMOVE THE CHASSIS-SIDE, REFERRING TO THE PREVIOUS STEP<4>

5. DISCONNECT THE CONNECTOR(CP2) FROM LEAD WIRE(CW2) ON THE INPUT P.C. BOARD(h)

6. DISCONNECT THE CONNECTOR(CP17) ON THR FRONT P. C. BOARD(C) FROM CONNECTOR(CP14) ON THE AC-INLET P. C. BOARD(g)

7. DISCONNECT THE CONNECTOR(CP18, CP19) ON THE FRONT P. C. BOARD(C) FROM CONNECTOR(CP14) ON THE AC-INLET P. C. BOARD(g)

8. DISCONNECT THE CONNECTOR(CP15) ON THE POWER P. C. BOARD(b) FROM CONNECTOR(CW17) ON THE AC-INLET P. C. BOARD(g)

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9. REMOVE 35 SCREWS(A) ON THE CHASSIS-BACK(18)

10. REMOVE 3 SCREWS AND THEN PULL OUT THE RADIATOR ASS'Y(AB)

PA 2000 / PA 4000

<6> INPUT P. C. BOARD(h) REMOVAL.

1. REMOVE THE CHSSIS-TOP(20), REFERRING TO THE PREVIOUS STEP<1>

2. REMOVE THE CHASSIS-BACK, REFERRING TO THE PREVIOUS STEP<5>

3. DISCONNECT THE CONNECTOR(CP2) FROM LEAD WIRE(CW102) ON THE INPUT P.C. BOARD(h)

4. DISCONNECT THE CONNECTOR(CP1) FROM LEAD WIRE(CW101) ON THE INPUT P.C. BOARD(h)

5. DISCONNECT THE CONNECTOR(CP2) FROM LEAD WIRE(CW2) ON THE INPUT P.C. BOARD(h)

6. DISCONNECT THE CONNECTOR(CP1) FROM LEAD WIRE(CW1) ON THE INPUT P.C. BOARD(h)

7. DISCONNECT THE LEAD WIRE(5P) FROM CONNECTOR(CP24, CP25) ON THE INPUT P.C. BOARD(h)

8. DISCONNECT THE CONNECTOR(CP9) FROM LEAD WIRE(CW9) ON THE MAIN P.C.BOARD(e)

9. DISCONNECT THE CONNECTOR (CP22, CARD-CABLE) ON THE INPUT P. C. BOARD(h) FROM CONNECTOR (CP 11) ON THE MICOM P. C. BOARD(f).

10. DISCONNECT THE CONNECTOR(CP13, CARDCABLE) FROM LEAD WIRE(CP12) ON THE MAIN P. C. BOARD(e)

11. REMOVE 6 SCREWS(D) AND THEN REMOVE THE INPUT P. C. BOARD(h)

<7> MICOM P. C. BOARD(f) REMOVAL.

1. REMOVE THE CHSSIS-TOP(20), REFERRING TO THE PREVIOUS STEP<1>

2. REMOVE THE CHASSIS-BACK, REFERRING TO THE PREVIOUS STEP<5>

3. REMOVE THE INPUT P. C. BOARD, REFERRING TO THE PREVIOUS STEP<6>

4. REMOVE 3 SCREWS(D) AND THEN REMOVE THE MICOM P. C. BOARD(f)

<8> RADIATOR ASS'Y(AB) REMOVAL(RIGHT SIDE).

1. REMOVE THE CHSSIS-TOP(20), REFERRING TO THE PREVIOUS STEP<1>

2. REMOVE THE FRONT-PANEL ASS'Y(AA), REFERRING TO THE PREVIOUS STEP<2>

3. REMOVE THE CHASSIS-FORNT, REFERRING TO THE PREVIOUS STEP<3>

4. REMOVE THE CHASSIS-SIDE, REFERRING TO THE PREVIOUS STEP<4>

5. REMOVE THE CHASSIS-BACK, REFERRING TO THE PREVIOUS STEP<5>

6. DISCONNECT THE CONNECTOR(CP104) ON THE MAIN P. C. BOARD(e) FROM CONNECTOR(CW4-1, CW4-2) ON THE AMP P. C. BOARD(d)

7. DISCONNECT THE CONNECTOR(CP8) ON THE MAIN P. C. BOARD(e) FROM POSSITOR ON THE RADIATOR.

8. DISCONNECT THE CONNECTOR(CW9, 2P) ON THE MAIN P. C. BOARD(e) FROM CONNECTOR(CP9-1/3) ON THE AMP P. C. BOARD(d)

9. DISCONNECT THE CONNECTOR(CP103) ON THE MAIN P. C. BOARD(e) FROM CONNECTOR(CW3) ON THE AMP P. C. BOARD(d)

<9> RADIATOR ASS'Y(AB) REMOVAL(LEFT SIDE).

1. REMOVE THE CHSSIS-TOP(20), REFERRING TO THE PREVIOUS STEP<1>

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2. REMOVE THE FRONT-PANEL ASS'Y(AA), REFERRING TO THE PREVIOUS STEP<2>

10. REMOVE 3 SCREWS AND THEN PULL OUT THE RADIATOR ASS'Y(AB)

POWER-TRANS(12)

PA 2000 / PA 4000

3. REMOVE THE CHASSIS-FORNT, REFERRING TO THE PREVIOUS STEP<3>

4. REMOVE THE CHASSIS-SIDE, REFERRING TO THE PREVIOUS STEP<4>

5. REMOVE THE CHASSIS-BACK, REFERRING TO THE PREVIOUS STEP<5>

6. DISCONNECT THE CONNECTOR(CP104) ON THE MAIN P. C. BOARD(e) FROM CONNECTOR(CW4-1, CW4-2) ON THE AMP P. C. BOARD(d)

7. DISCONNECT THE CONNECTOR(CP8) ON THE MAIN P. C. BOARD(e) FROM LEAD WIRE(POSSITOR, 2P) ON THE RADIATOR-MAIN.

8. DISCONNECT THE CONNECTOR(CW9, 2P) ON THE MAIN P. C. BOARD(e) FROM CONNECTOR(CP9-1/3) ON THE AMP P. C. BOARD(d)

9. DISCONNECT THE CONNECTOR(CP3) ON THE MAIN P. C. BOARD(e) FROM CONNECTOR(CW3) ON THE AMP P. C. BOARD(d)

<10> MAIN P. C. BOARD(e) REMOVAL.

1. REMOVE THE CHSSIS-TOP(20), REFERRING TO THE PREVIOUS STEP<1>

2. REMOVE THE FRONT-PANEL ASS'Y(AA), REFERRING TO THE PREVIOUS STEP<2>

3. REMOVE THE CHASSIS-FORNT(7), REFERRING TO THE PREVIOUS STEP<3>

4. REMOVE THE CHASSIS-SIDE, REFERRING TO THE PREVIOUS STEP<4>

5. REMOVE THE CHASSIS-BACK(18), REFERRING TO THE PREVIOUS STEP<5>

6. REMOVE THE INPUT P. C. BOARD(h), REFERRING TO THE PREVIOUS STEP<6>

7. REMOVE MICOM P. C. BOARD(f), REFERRING TO THE PREVIOUS STEP<7>

8. REMOVE RADIATOR ASS'Y(AB), REFERRING TO THE PREVIOUS STEP<8,9>

9. DISCONNECT CONNECTOR (CP5) FROM LEAD WIRE(3P) ON THE

10. DISCONNECT CONNECTOR (CP6) FROM LEAD WIRE(3P) ON THE POWER-TRANS(12)

11. REMOVE 10 SCREWS(G:8EA, H:2EA) AND THEN REMOVE THE MAIN P. C. BOARD(e)

<11> POWER TRANS(12) REMOVAL