ALIGNMENT PROCEDURES
I. INITIAL
A. LOWEST VOLUME ADJUSTMENT
3. Connect a oscilloscope to L channel binding posts.
1. Tune the volume pot to lowest state.
2. Input a high voltage signal such as 5V from CD input.
4. Observing the oscilloscope,adjust VR301,make the output of speakers become to the
5. Adjusting VR302,make R channel output become to the lowest level by same way.
B. IDLING CURRENT
2. Connect a DC voltmeter toTP1 and TP2 ,adjust VR22 for 4mV reading on voltmeter.
3. Connect a DC voltmeter toTP3 and TP4 ,adjust VR12 for 4mV reading on voltmeter.
1. Level power on for a minimum of 5 minutes
II. FINAL ADJUSTMENT
Repeat procedure A,B and C for the lowest volume level, idling current alignment
and ISC original level respectively.
TP1
TP2
TP3
TP4
VR22
VR12
VR301
VR302
MAIN BOARD
lowest level.
C325BEE
VR3
TP10 TP11
C.ISC CIRCUIT ORIGINAL ADJUSTING
Adjust the pot VR3 to make the DC voltage of the point of TP10 to the same as TP11
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