Yamaha DSP-E800 - ADJUSTMENTS; Confirmation of Idling Current

DSP-E800
DSP-E800
5
■ ADJUSTMENTS
● Confirmation of Idling Current
1) No signal applied.
2) Non-loaded condition.
3) Aging is not neccessary.
Test Point
CB103
R161 or R163
R167 or R169
Rating (DC)
0.1mV—5mV
Note
Item
REAR L
REAR R
CENTER
If the measured voltage exceeds 5.1mV, cut the
lead wire of R133(RL ch), R142(RR ch) or R150(C
ch) and then check again if each measured value
satisfies the rating.
Cut
R133 (RL ch)
R142 (RR ch)
R150 (C ch)
Note)
• If R133 (RL ch), R142 (RR ch) or R150 (C ch) have already been cut
off and idling current does not flow, reconnect R133 (470Ω), R142
(470Ω) or R150 (470Ω).
• Q107, Q109 and Q111 are transistors for temperature compensation.
Apply silicone grease to the contact surface with the heat sink.
0.1mV — 5mV (DC)
CB103 (RL ch)
0.1mV — 5mV (DC)
R161 or R163 (RR ch)
R167 or R169 (C ch)
* Confirm that the voltage is 0.12—7.5mV after 60 minutes.
R161
R163
R167
R169
R150
R142
R133
CB103
Q107
Q111
Q109