Yamaha HTR-2866A, Service Manual

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CB1
36
IC132 IC135
IC133
IC134 IC131
CB132
CB131
CB134
CB135
IC137
IC136
CB154
CB155
CB153
CB152
CB1
51
OPERATION (2)
(Side A)
POWER TRANSFORMER
U, C models
AC IN
OUT COM IN OUT COM IN OUT COM IN OUT COM IN 4 1
OPERATION (3)
(Side A)
AC
5
AC
5
AC
4
AC
4
AC
3
AC
3
AC
2
E
AC
2
-VP
PS_PR
T
-1
2A
A
GND
+1
2A
NC
POWER TRANSFORMER
OPERATION (1)
(CB102)
MAIN (1)
(CB2)
DIGITAL
(CB262)
R, S models
R, S models
R, S models
R, S models
MGND
S9
PWR_RY
ACDET
MGND
S9
PWR_RY
ACDET
PWR_RY
MGND
+3.3M
+5A
N_PDET
CPU_N_RST
AGND DGND
THM1 THM2
+7D
+5T
-VP
AC6
AC6
+5.5U
UGND
5 k-ohms
10 W
RX-V375 (U, C, R, K, A, B, G, F, L, S, H, J models)
HTR-3066 (U, C, R, K, A, B, G, F, L, S, H models)
RX-V375 (U, C, R, K, A, B, G, F, L, S, H, J models)
HTR-3066 (U, C, R, K, A, B, G, F, L, S, H models)
RX-V375 (U, C, T, K, A, B, G, F, L, H, J models)
HTR-3066 (U, C, T, K, A, B, G, F, L, H models)
RX-V375 (U, C, T, K, A, B, G, F, L, H, J models)
HTR-3066 (U, C, T, K, A, B, G, F, L, H models)
RX-V375 (U, C, T, K, A, B, G, F, L, H, J models)
HTR-3066 (U, C, T, K, A, B, G, F, L, H models)
A B C D E F G H I J
1
2
3
4
5
6
7
80
RX-V375/HTR-3066/HTR-2866
• Semiconductor Location
Safety measures
• Some internal parts in this product contain high voltages and are dangerous. Be sure to take safety measures during servicing, such
as wearing insulating gloves.
• Note that the capacitors indicated below are dangerous even after the power is turned off because an electric charge remains and a
high voltage continues to exist there. Before starting any repair work, connect a discharging resistor (5 k-ohms/10 W) to the terminals
of each capacitor indicated below to discharge electricity. The time required for discharging is about 30 seconds per each.
C1501 on OPERATION (3) P.C.B.
安全対策
・ この製品の内部には高電圧部分があり危険です。修理の際は、絶縁性の手袋を使用するなどの安全対策を行ってください。
・ 下記のコンデンサには電源を OFF にした後も電荷が残り、高電圧が維持されており危険です。修理作業前に放電用抵抗
（5 k Ω /10 W）を下記の各コンデンサの端子間に接続して放電してください。放電所用時間は各々約 30 秒間です。
OPERATION（3）P.C.B. の C1501
RX-V375/HTR-3066
Ref no. Location
D1307 C2
D1308 D3
D1309 D2
D1503 G5
D1504 G5
D1505 H5
D1506 H5
Ref no. Location
D1507 H5
IC131 H2
IC132 F2
IC133 G2
IC134 G2
IC135 G2
IC136 D2
Ref no. Location
IC137 D2
Q1303 G3
Q1501 H7
Q1502 H7
Q1503 H7
Q1504 H6