■
CONFIRMATION OF IDLING CURRENT OF AMP UNIT
●
Right after power is turned on, confirm that the voltage across the terminals of R1152 (SURROUND BACK Rch), R1154
(SURROUND Rch), R1150 (FRONT Rch), R1148 (CENTER), R1149 (FRONT Lch), R1153 (SURROUND Lch), R1151
(SURROUND BACK Lch) are between 0.1 mV and 10.0 mV.
●
If it exceeds 10.0 mV, open (cut off) R1090 (SURROUND BACK Rch), R1092 (SURROUND Rch), R1088 (FRONT Rch),
R1086 (CENTER), R1087 (FRONT Lch), R1091 (SURROUND Lch), R1089 (SURROUND BACK Lch) and reconfirm the
voltage.
Attention
If the measured voltage exceeds 10.0 mV after an amplifier repair, first check for a defective component before cutting
the bias resistor.
●
Confirm that the voltage is 0.2 mV to 15.0 mV after 60 minutes.
Front side
MAIN (1) P.C.B.
R1154
R1153
R1152
R1151
R1150
R1149
R1148
R1092
R1091
R1090
R1089
R1088
R1087
R1086
0.1 mV – 10.0 mV
(DC)
R1090 (SURROUND BACK Rch)
R1092 (SURROUND Rch)
R1088 (FRONT Rch)
R1086 (CENTER)
R1087 (FRONT Lch)
R1091 (SURROUND Lch)
R1089 (SURROUND BACK Lch)
R1152 (SURROUND BACK Rch)
R1154 (SURROUND Rch)
R1150 (FRONT Rch)
R1148 (CENTER)
R1149 (FRONT Lch)
R1153 (SURROUND Lch)
R1151 (SURROUND BACK Lch)
Open (cut off)
68
RX-V671/HTR-6064/RX-A710
RX-V671/HTR-6064/
RX-A71
0
DRAFT