Read Harman Kardon PA 2000 (serv.man4) Service Manual online
The Harman Kardon
Model PA 2000 / PA 4000
Model PA 2000 / PA 4000
Manual A
MULTICHANNEL AMPLIFIER
CONTENTS
TECHNICAL SPECIFICATIONS … … … … ..03
ALIGNMENT PROCEDURES … … … … … . 05
BLOCK DIAGRAM … … … … … … … … … . . … 06
DISASSEMBLY PROCEDURES … … .. … … 0 8
EXPLODED VIEW.. … … … … … … … .. … … ..11
PRINCIPAL SCREW LOCATION... …... …..13
ALIGNMENT PROCEDURES … … … … … . 05
BLOCK DIAGRAM … … … … … … … … … . . … 06
DISASSEMBLY PROCEDURES … … .. … … 0 8
EXPLODED VIEW.. … … … … … … … .. … … ..11
PRINCIPAL SCREW LOCATION... …... …..13
PARTS LIST… … … … … … … … … . … .. … … .18
IC BLOCK DIAGRAM … … … … … … … … … .48
PRINTED CIRCUIT BOARDS … … … … .. … 61
SCHEMATIC DIAGRAMS … … … … .. … … ..67
WIRING DIAGRAM … … … … … … … … … … 7 3
PACKING MATERIAL … … … … … … … … … 7 6
IC BLOCK DIAGRAM … … … … … … … … … .48
PRINTED CIRCUIT BOARDS … … … … .. … 61
SCHEMATIC DIAGRAMS … … … … .. … … ..67
WIRING DIAGRAM … … … … … … … … … … 7 3
PACKING MATERIAL … … … … … … … … … 7 6
harman/kardon
Parts and Service Office
80 Crossways Park West, Woodbury, N.Y. 11797
Printed in Korea
14
TECHNICAL SPECIFICATIONS
Technical Specifications
Power Output
Normal Mode
4 x 45 watts @ 8 ohms, 20Hz – 20kHz, <0.07% THD, all channels driven
Bridged Mode
2 x 100 watts @ 8 ohms, 20Hz – 20kHz, <0.07% THD, all channels driven
High-Current Capability
±
45 amps
Frequency Response
<1Hz – 170kHz, –3dB at 1 watt
Signal-to-Noise Ratio
110dB ref. to rated power 45 watts
THD/IMD
Less than 0.07% at rated output
Power Bandwidth
<1Hz – 100kHz
Input Impedance
47K ohms
Input Sensitivity
1 volt for rated output (with max. Output Level Trim Control)
Remote Trigger Voltage
3 – 30 volts AC/DC
Remote Trigger Impedance
20K ohms
Dimensions (H x W x D)
155mm x 442mm x 400mm
Weight
25.3 lb/11.4kg
Power Requirements
220-/240VAC, 50Hz/60Hz
PA2000
2. Alignment Procedure
1. Test Equipment Required
-DC Voltmeter
Note: Disconnect external Audio Generator prior to alignment.
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. 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’
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
Adjust for( mV)
Step
Equipment
Test Point
Adjustment
Point
Target
Nominal
Limit
1
DC
Voltmeter
J401
VR401
26
23~30
22~32
2
DC
Voltmeter
J501
VR501
26
23~30
22~32
3
DC
Voltmeter
J451
VR451
26
23~30
22~32
4
DC
Voltmeter
J551
VR551
26
23~30
22~32
Note: The Adjust for is after 1hour’s value of each test point.
PA 4000
5
PA 2000
3. BLOCK DIAGRAM
6
