Sony TA-F606ES Service Manual page 6

SECTION 2
ELECTRICAL ADJUSTMENTS
Bias Adjustment
Note: Adjustment the idling after tuning the unit on for
about 10 minutes, giving it time to warm up.
Procedure :
1. Connect the digital voltmeter to VH4 on main board
sa follows.
2. Adjust RT301(L-CH) and RT351(R-CH) so that the
digital voltmeter on signal reads 24mV at VH4.
Adjustment Location :
{MAIN BOARD]
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