Read Harman Kardon PA 4000 (serv.man4) Service Manual online
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
Click on the first or last page to see other PA 4000 (serv.man4) service manuals if exist.