Yamaha RX-A4A - AMPPOWER; Side A

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2
3
4
5
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7
76
RX-A4A
W3026
W3011A
W3033A
W3016
W3017
W3031
W3028
W3030 W3032
W3022
W3003
CB305
W3006A
W3006B
W3029B
W3029A
W3029D
W3033B
W3012
W3013
W3021
W3020
W3024
W3018
W3019
W3015
W3014
W3029C
W3005A
W3005B
CB304
CB306
W3009
W3001
W3002
W3023
W3011B
EXTRA SP.2
SURROUND BACK
ZONE2
+/-
LR
SURROUND
R
+/- +/-
L
+/-
CENTER
+/-
EXTRA SP.1
F.PRESENCE
ZONE 2/BI-AMP
+/-
LR
+/-
FRONT
+/-
LR
+/-
AMP (1) (ST204)
FUNCTION (2)
(CB648)
OPERATION (2)
(CB411)
AMP (1) (CB208)AMP (2) (CB246)
OPERATION (1)
(CB404)
DIGITAL
(CB82)
DIGITAL
(CB83)
VI
AMP (2) (ST243)
GY
AMP (1) (ST208)
BL
AMP (2) (ST244)
BL
AG1_RETURN
-12V
AG1_SENS
+12V
AG2_RETURN
AG2_SENS
+5A +5A
POWER
TRANSFORMER
20T_AC 20T_AC
12V_AC
12V_GND
12V_AC
+5A_AC +5A_AC
POWER
TRANSFORMER
LB_AC
GND
LB_AC
POWER
TRANSFORMER
BH_AC BH_AC
BL_AC
BL_AC
GND GND
SPRY_EX4
FAN_CTR
3.3S
AMP_OLV
AMP_LMT
I_PRT
DC_PRT
DGND/THM3
N.C.
PS1_PRT
PS2_PRT
LB_GND
+LB_R
-LB_R
I_PRT_R
LB_GND
+LB_L
-LB_L
I_PRT_L
SPRY_ZRP
SPRY_EX3
DGND
+5.5V
+20TRG
TRG_GND
TRG_GND
SPRY_BA
SPRY_ZSB
SPRY_Z
SPRY_SR
SPRY_SB
SPRY_ZFP
SPRY_FZRP
SPRY_C
SPRY_F
PA_B_RY
DGND
RE
AMP (2)
(ST241)
RE
AMP (1)
(ST202)
BE
AMP (1)
(ST201)
BE
AMP (2)
(ST240)
AMP (1) (ST205)
RE
AMP (1)
(ST203)
WH
AMP (1) (ST207)
GY
AMP (2)
(ST245)
BE
AMP (2) (ST246)
YE
SPEAKERS
5 k-ohms
10 W
5 k-ohms
10 W
5 k-ohms
10 W
5 k-ohms
10 W
5 k-ohms
10 W
5 k-ohms
10 W
5 k-ohms
10 W
5 k-ohms
10 W
5 k-ohms
10 W
5 k-ohms
10 W
5 k-ohms
10 W
5 k-ohms
10 W
5 k-ohms
10 W
5 k-ohms
10 W
5 k-ohms
10 W
5 k-ohms
10 W
5 k-ohms
10 W
5 k-ohms
10 W
AMPPOWER
(Side A)
• Semiconductor Location
Ref no. Location
D3008 D6
Q3002 F5
Q3003 F5
Q3005 E5
Q3006 E5
Q3009 D5
Q3010 D5
Q3011 D5
Q3012 D5
Q3013 G5
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kΩ /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。
AMPPOWER P.C.B. の C3013、C1014、C3017、C3023、
C3024、C3029
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.
C3013, C1014, C3017, C3023, C3024 and C3029 on
AMPPOWER P.C.B.