Yamaha HTR-3072, Service Manual

Page: 88 / 133

CB541
W5403
IC543
IC544
CB501
CB524
CB521
CB522
IC523 IC524
CB544
IC542
IC541
W5401
OPERATION (2)
(Side A)
OPERATION (3)
(Side A)
OPERATION (4)
(Side A)
POWER TRANSFORMER
AC IN
AV 1 AV 2 AV 3
VIDEO VIDEO VIDEO
MONITOR
OUT
POWER TRANSFORMER
Sub-transformer
DIGITAL
(CB24)
DIGITAL
(CB25)
DIGITAL
(CB81)
DIGITAL
(CB27)
MAIN (1)
(CB223)
1
4
5 8
ACPWR_DET
TEST
DGND
PRY
+3.3M
+5.5V +5.5V GND GND
V_N_MUTE
VSEL2
VSEL1
+5V
VE
+12RY AG2 -12RY
DGND
THM1_PRT
+3.3S
+3.3T
PS1_PRT
PS2_PRT
P_200_DET
5 k-ohms
10 W
5 k-ohms
10 W
5 k-ohms
10 W
5 k-ohms
10 W
V, P, S models
A B C D E F G H I J
1
2
3
4
5
6
7
88
RX-V385/HTR-3072
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.
C5419, C5422 on OPERATION (2) P.C.B.
C5219, C5220 on OPERATION (4) 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（2）P.C.B. の C5419、C5422
OPERATION（4）P.C.B. の C5219、C5220
Ref no. Location
D5205 H6
D5402 D4
D5409 C3
IC523 J6
IC524 J6
IC541 D4
IC542 B3
IC543 D3
IC544 D2
Q5201 J5
• Semiconductor Location