Yamaha RX-V2065 - AV Network Receiver, Service Manual

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67
RX-V2065/HTR-6295
RX-V2065/HTR-6295
Front side
MAIN (1) P.C.B.
R1154
R1106
R1105
R1104
R1103
R1102
R1101
R1100
R1152
R1151
R1150 R1149
R1148
R1153
0.1 mV – 10.0 mV
(DC)
R1104 (SURROUND BACK Rch)
R1106 (SURROUND Rch)
R1102 (FRONT Rch)
R1100 (CENTER)
R1101 (FRONT Lch)
R1105 (SURROUND Lch)
R1103 (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)
■
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 0.1mV and 10.0mV.
●
If it exceeds 10.0 mV, open (cut off) R1104 (SURROUND BACK Rch), R1106 (SURROUND Rch), R1102 (FRONT Rch),
R1100 (CENTER), R1101 (FRONT Lch), R1105 (SURROUND Lch), R1103 (SURROUND BACK Lch) and reconfirm the
voltage.
Attention
If the measured voltage exceeds 10.0mV 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.