Dc Offset/Idle Current Adj - Harman Kardon AVR 7200 Service Manual

AVR7200
AVR7200 OFFSET ADJUSTMENT & IDLE CURRENT ADJUSTMENT
DC Offset - Adjustment
Function : 8CH DIRECT INPUT
Volume level:minimum
Test position:Speaker out terminal (between "+" and "-") speaker jack
No Load
a. Turn ON power
b. Align to about 0±5mV
Channel
FRONT L CH
REAR L CH
SURRBACK L CH
REAR R CH
SURRBACK R CH
FRONT R CH
CENTER CH
c. After 5 Min. Repeat at 0±20mV
Idle - adjustment
Function : 8 CH DIRECT INPUT
Volume level: minimum
a. Turn ON power
b. Align to about 12.0~13.0mV.
Channel
FRONT L CH
REAR L CH
SURRBACK L CH
REAR R CH
SURRBACK R CH
FRONT R CH
CENTER CH
c. After 5 Min. Repeat at 12.0mV~13.0mV.
Check point Adjustment location
FL SPEAKER VR11(3channel AMP)
SL SPEAKER VR21(3channel AMP)
SL SPEAKER VR31(3channel AMP)
SR SPEAKER VR41(4channel AMP)
SBR SPEAKER VR51(4channel AMP)
FR SPEAKER VR61(4channel AMP)
CTR SPEAKER VR71(4channel AMP)
Check point Adjustment location
P101(R172) VR12 (3channel AMP)
P201(R272) VR22 (3channel AMP)
P301(R372) VR32 (3channel AMP)
P401(R472) VR42 (4channel AMP)
P501(R572) VR52 (4channel AMP)
P601(R672) VR62 (4channel AMP)
P701(R772) VR72 (4channel AMP)
23
harman/kardon
Adjustment value
0±10mV
0±10mV
0±10mV
0±10mV
0±10mV
0±10mV
0±10mV
Adjustment value
12.0mV~13.0mV
12.0mV~13.0mV
12.0mV~13.0mV
12.0mV~13.0mV
12.0mV~13.0mV
12.0mV~13.0mV
12.0mV~13.0mV