DTR-6.5
ADJUSTMENT AND CONFIRMATION PROCEDURES
1.Idling current adjustment
Before Idling adjustment, turn the trimming resistors R6040 to R6045 counter-clockwise fully.
Connect the DC voltmeter to sockets P6080 to P6086.
After turn POWER to ON, adjust the trimming resistors R6040, R6041 and R6042 so that the reading of
voltmeter becomes 1.25mV. (Front and center channels)
Adjust the trimming resistors R6043, R6044,R6045 and R6046 so that the reading of
voltmeter becomes 0.75 mV. (Surround and surround back channels)
After adjustment, attach the top cover.
Confirm the voltage of points above after about five minutes.
Front and center channels
When less than 5.0 mV, readjust the resistors above so that the voltage becomes 5.0 mV.
When 5.0 mV to 6.0 mV, it is not necessary to adjust.
When more than 6.0 mV, readjust the resistors above so that the voltage becomes 6.0 mV.
Surround and surround back channels
When less than 3.5 mV, readjust the resistors above so that the voltage becomes 3.5 mV.
When 3.5 mV to 4.5 mV, it is not necessary to adjust.
When more than 4.5 mV, readjust the resistors above so that the voltage becomes 4.5 mV.
Note: No load and No signal
COM
BIASBIASBIASBIASTH2TH1
R6041 P6081R6043P6083R6040 P6080R6042 P6082BIAS
ID-ID-ID-ID-ID-P6301
R6044P6084
ID+ID+ID+ID+ID+
LRC
P6004B
P6000BSLP6001BP6002BP6003BSR
NAAF-8397
NAAF-8391
BIAS
BIAS
R6045ID-P6085R6046P6086
ID-
SBLID+SBRID+ |