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ALIGNMENT PROCEDURES
I. INITIAL
A. LOWEST VOLUME ADJUSTMENT
1. Tune the volume pot to lowest state.
2. Input a high voltage signal such as 5V from CD input.
3. Connect a oscilloscope to L channel binding posts.
4. Observing the oscilloscope,adjust VR301,make the output of speakers become to the
lowest level.
5. Adjusting VR302,make R channel output become to the lowest level by same way.
B. IDLING CURRENT
1. Connect a DC voltmeter toTP1 and TP2 ,adjust VR22 for 4-5mV reading on voltmeter.
2. Connect a DC voltmeter toTP3 and TP4 ,adjust VR12 for 4-5mV reading on voltmeter.
3. Level power on for a minimum of 5 minutes
II. FINAL ADJUSTMENT
Repeat procedure A and B for lowest volume level and idling current alignment
respectively.
MAIN BOARD
TP1
VR22
TP2
TP3
VR12
TP4
- 16 -
VR302
VR301
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