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RX-V863/HTR-6180/DSP-AX863SE/DSP-AX863
I CONFIRMATION OF IDLING CURRENT OF AMP UNIT
• Right after power is turned on, confirm that the voltage across
the terminals of R1303 (SURROUND BACK R ch), R1153
(SURROUND R ch), R1154 (FRONT R ch), R1152 (CEN-
TER), R1150 (FRONT L ch), R1151 (SURROUND L ch),
R1149 (SURROUND BACK L ch) are between 0.1 mV and
10.0 mV.
• If measured voltage exceeds 10.0 mV, open (cut off)
R1252 (SURROUND BACK R ch), R1112 (SURROUND R
ch), R1114 (FRONT R ch), R1110 (CENTER), R1106
(FRONT L ch), R1108 (SURROUND L ch), R1104 (SUR-
ROUND BACK L ch) and reconfirm the voltage.
Attention
If the measured voltage exceeds 10.0 mV after repair-
ing a power amplifier first check for a defective compo-
nent before cutting the bias resistor.
• Confirm that the voltage is 0.2 mV to 15.0 mV after 60
minutes.
0.1mV - 10.0mV
(DC)
Top view
MAIN (1) P.C.B.
R1149
R1106
R1104
64
R1303 (SURROUND BACK Rch)
R1153 (SURROUND Rch)
R1154 (FRONT Rch)
R1152 (CENTER)
R1150 (FRONT Lch)
R1151 (SURROUND Lch)
R1149 (SURROUND BACK Lch)
R1150
R1151
R1108
R1110
Open (cut off)
R1252 (SURROUND BACK Rch)
R1112 (SURROUND Rch)
R1114 (FRONT Rch)
R1110 (CENTER)
R1106 (FRONT Lch)
R1108 (SURROUND Lch)
R1104 (SURROUND BACK Lch)
Rear
R1152
R1153
R1112
R1114
Front
R1154
R1303
R1252
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