Harman Kardon PA 2000, Руководство по обслуживанию

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Idle Current Adjustment Procedure
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
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.
PA4000 harman/kardon
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