Yamaha RX-V385, Руководство по обслуживанию

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1
B C D E F G H I J K L M N O P Q R S T U V W X Y Z AA AB AC A
RX-V385/HTR-3072
106
MAIN 2/3
★
All voltages are measured with a 10MΩ/V DC electronic voltmeter.
★
Components having special characteristics are marked ⚠ and must be replaced
with parts having specifications equal to those originally installed.
★
Schematic diagram is subject to change without notice.
● 電圧は、内部抵抗 10MΩの電圧計で測定したものです。
● ⚠印のある部品は、安全性確保部品を示しています。部品の交換が必要な場合、
パーツリストに記載されている部品を使用してください。
● 本回路図は標準回路図です。改良のため予告なく変更することがあります。
FRONT L
CENTER
SURROUND L
0
3.3
0
0
0
49.2
49.3
12.1
-12.0
0
0
26.6
26.7
0 0 0
2.9 2.9 0.8
0 0 0
3.3 3.3 3.3 3.2 3.2 3.2 1.0 3.0 2.8 3.0
REMARKS
CAPACITOR
PARTS NAME
NO
NO
MARK
MARK
ELECTROLYTIC CAPACITOR
CERAMIC CAPACITOR
POLYESTER FILM CAPACITOR
POLYSTYRENE FILM CAPACITOR
MICA CAPACITOR
POLYPROPYLENE
FILM CAPACITOR
SEMICONDUCTIVE CERAMIC CAPACITOR
P
SOLID ELECTROLYTIC CAPACITOR
TUBULAR
S
CAPACITOR CERAMIC
FILM SULFIDE POLYPHENYLENE
CAPACITOR
P
P
RESISTOR
REMARKS
NO MARK PARTS NAME
CARBON
CARBON
METAL
METAL
METAL
FIRE
CEMENT
SEMI FILM RESISTOR
FILM RESISTOR
OXIDE FILM RESISTOR
FILM RESISTOR
PLATE RESISTOR
PROOF CARBON FILM RESISTOR
MOLDED RESISTOR
VARIABLE RESISTOR
(P=5)
(P=10)
CHIP RESISTOR
P
P
P
- 1 2 R Y
D2107
1SS355VM
A 1 1 4 5 ( O / Y )
Q 2 1 2 0
A G N D
PS1_PRT
D211
1
1SS355VM
D2143
D2136
1SS355VM
C H A S S I S _ A
D2124
1SS355V
M
R 2 1 1 1
3 3 K
AMP_LMT
C
R2344 120K
R2319
100K
R2342
1P4.7
C211
6
120P(SL
)
R2318 100K
C2183
10/100
R2156
270K
A M P _ L M T
6 7 1 2 Q
A 9 5 6 1 A T K
Q2122
C 4 1 1 5 S
R Y 2 2 5
9 8 1 - 2 A - 2 4 D S - S P 7
2 3
D212
8
1SS355VM
P S 1 _ P R T
P O E
D214
8
1SS355VM
Q 2 1 9 1
K R A 1 0 4 S - R T K / P
R2275 6.8
K
R2334 100K
R2328
1P4.7K
D2126
1SS355V
M
Q 2 1 6 9
I N C 6 0 0 2 A C 1 - T 1 1 2
Q 2 1 1 1
C2713(GR)
R Y 2 2 1
9 8 1 - 2 A - 2 4 D S - S P 7
2 3
Q2123
C 4 1 1 5 S
+ 1 2 R Y
R 2 2 8 5
4 7 K
D2118
UDZV5.1B
C2182
1000P(B)
D2138
1SS355VM
R 2 3 0 5
1 P 1 K
R2338
10K
W 2 1 1 1
4 P 4 0 0 M M B & C
M F 4 0 4 4 0
1
2
3
4
Q 2 1 0 7
C2713(GR)
R2322
1P5.6K
R2268
68K
Q 2 1 8 0
K R A 1 0 4 S - R T K / P
R Y 2 2 2
9 8 1 - 2 A - 2 4 D S - S P 7
5 4
R2154
270K
V O L _ M O S I
RY225
981-2A-24DS-SP7
16
D2133
1SS355VM
R 2 1 5 8
1 0 K
D2117
UDZV5.1B
R2326 4.7
K
R 2 1 0 9
3 3 K
T H 2 2 1
N C P 1 8 X H 1 0 3 J 0 3 R B
R 2 1 6 0
1 0 K
-12RY
SPRY_3CH
D2125
1SS355VM
R 2 1 1 2
3 3 K
R2332
100K
C2114
120P(SL)
R 2 1 1 3
3 3 K
Q 2 1 7 3
2 N 5 5 5 1 C - A T / P
R2323
560
P N 2 2 3
n o _ u s e
C2115
220P(SL)
Q 2 1 0 5
C2713(GR)
D211
6
1SS355VM
P O E
R2157
270K
C2154
no_use
RY222
981-2A-24DS-SP7
16
R2294
10K
R 2 1 6 4
1 0 K
D210
5
1SS355VM
Q 2 1 7 0
I N C 6 0 0 2 A C 1 - T 1 1 2
R2331 100K
D2127
1SS355V
M
Q2125
C 4 1 1 5 S
K T A 1 6 5 9 A
Q 2 1 7 5
D2108
1SS355VM
RY221
981-2A-24DS-SP7
1
6
R 2 3 0 0
1 P 4 . 7
R2325
100
Q2124
C 4 1 1 5 S
V O L _ S C K
R2333 100K
P O E
D211
4
1SS355VM
R 2 3 2 7
1 0 0
HPRY
D2132
Q 2 1 0 3
C2713(GR)
R 2 1 6 2
1 0 K
+12RY
R2320
100K
R Y 2 2 3
9 8 1 - 2 A - 2 4 D S - S P 7
2 3
H P R Y
Q2128
C 4 1 1 5 S
F L
R 2 1 1 5
3 3 K
S P R Y _ S B
R 2 1 6 3
1 0 K
Q 2 1 7 8
2 N 5 5 5 1 C - A T / P
C2179 33/50
T R A N S _ R Y
D2142
D2122
UDZV5.1B
Q 2 1 0 9
C2713(GR)
R Y 2 2 4
9 8 1 - 2 A - 2 4 D S - S P 7
5 4
C2109
120P(SL)
4.7/50 C2172
R2345 120K
Q 2 1 7 4
2 N 5 4 0 1 C - A T / P
Q 2 1 3 1
C2229(O/Y)
D2109
1SS355VM
220/10
C2175
D2131
UDZV13B
R 2 1 0 8
n o _ u s e
D2103
1SS355V
M
Q 2 1 1 4
C2713(GR)
R2315
100K
JW 1630 V
JY221
T H M 2 _ P R T
Q 2 1 9 0
K R A 1 0 4 S - R T K / P
C2122
220P(SL)
R Y 2 2 3
9 8 1 - 2 A - 2 4 D S - S P 7
5 4
C2119
220P(SL)
P O E
Q 2 1 3 4
C 2 2 2 9 ( O / Y )
D2123
UDZV5.1B
Q 2 1 8 7
K R A 1 0 4 S - R T K / P
R2264
68K
D2112
1SS355V
M
M U T E _ 3 c h
D2106
1SS355V
M
H S 2 2 1
Q 2 1 8 9
K R C 1 0 2 S - R T K / P
C211
2
120P(SL)
R 2 3 0 1
4 7 K
S P R Y _ 3 C H
C2117
220P(SL)
P O E
T H M 2 _ P R T
C2153
no_use
S B R
C B 2 2 2
V H I
1
2
3
4
5
6
Q 2 1 0 2
C2713(GR)
C2152
no_use
D2149
1SS355VM
R2265
68K
C H A S S I S _ A
R2152
270K
D2140
1SS355VM
Q 2 1 6 7
I N C 6 0 0 2 A C 1 - T 1 1 2
Q 2 1 8 1
K R C 1 0 2 S - R T K / P
P N 2 2 4
R2276 6.8K
W 2 1 0 1 A
C2159 10/50
C2184 10/100
R2309
100K
R2341
1P4.7
C H A S S I S _ A
S B L
R2263
68K
Q 2 1 3 5
C 2 2 2 9 ( O / Y )
R 2 2 8 7
4 7 K
R2267
68K
Q 2 1 3 0
C2229(O/Y)
R 2 2 9 0
4 7 K
S R
D2141
1SS355VM
P O E
D2119
UDZV5.1B
Q 2 1 1 2
C2713(GR)
D2110
1SS355V
M
D2139
1SS355VM
C2157
no_use
R2269
68K
Q 2 1 7 9
K R C 1 0 2 S - R T K / P
R2153
270K
Q 2 1 8 5
K R C 1 0 2 S - R T K / P
D2113
1SS355V
M
W 2 1 0 1 C
M U T E _ S B
RY224
981-2A-24DS-SP7
16
C2156
no_use
R2155
270K
S L
R2270 6.8K
D2104
1SS355V
M
D2129
1SS355V
M
SPRY_SB
C2151
no_use
Q 2 1 1 3
C2713(GR)
R Y 2 2 1
9 8 1 - 2 A - 2 4 D S - S P 7
5 4
A 1 1 4 5 ( O / Y )
Q 2 1 1 7
C2111
220P(SL)
R 2 1 6 1
1 0 K
R227
4
6.8K
Q 2 1 2 9
C2229(O/Y)
M G
R2151
270K
Q 2 1 3 2
C 2 2 2 9 ( O / Y )
Q 2 1 0 8
C2713(GR)
R2317
10K
Q 2 1 6 6
I N C 6 0 0 2 A C 1 - T 1 1 2
R 2 2 8 6
4 7 K
R 2 1 5 9
1 0 K
Q 2 1 8 4
K R A 1 0 4 S - R T K / P
Q2127
C 4 1 1 5 S
C 2 1 0 8
n o _ u s e
Q 2 1 7 7
K T C 3 1 9 8 ( Y )
R2308
R227
2
6.8K
C2155
no_use
C2181
10/100
R Y 2 2 4
2 3
P O E
R2271 6.8K
C2113
220P(SL)
R Y 2 2 2
9 8 1 - 2 A - 2 4 D S - S P 7
2 3
M U T E _ S W
D2121
UDZV5.1B
Q 2 1 1 0
C2713(GR)
W 2 1 0 1 B
RY223
981-2A-24DS-SP7
16
R 2 3 2 9
1 . 0
R2350
no_use
F R
C218
0
10/100
9 9 2 2 R
K 0 1
Q 2 1 0 6
C2713(GR)
Q 2 1 8 2
K R A 1 0 4 S - R T K / P
Q 2 1 6 5
I N C 6 0 0 2 A C 1 - T 1 1 2
C2118
120P(SL)
R 2 3 0 2
1 P 4 . 7
A 1 1 4 5 ( O / Y )
Q 2 1 2 1
D2115
1SS355V
M
D2135
A 1 1 4 5 ( O / Y )
Q 2 1 1 6
D2137
1SS355VM
Q 2 1 0 1
C2713(GR)
Q 2 1 8 8
K R C 1 0 2 S - R T K / P
R 2 3 3 0
1 . 0
R2314
1 7 1 2 Q
2 1 H T - 1 C A 2 0 0 6 A N I
TRANS_RY
R2321 100K
D2120
UDZV5.1B
C2120
120P(SL)
A 1 1 4 5 ( O / Y )
Q 2 1 1 5
R2304
1P1.0
R2266
68K
P N 2 2 1
Q2126
C 4 1 1 5 S
A 1 1 4 5 ( O / Y )
Q 2 1 1 8
R Y 2 2 5
9 8 1 - 2 A - 2 4 D S - S P 7
5 4
A 1 1 4 5 ( O / Y )
Q 2 1 1 9
R 2 2 8 9
4 7 K
R2339
10K
C2110
120P(SL)
W 2 1 0 1 D
C2121
220P(SL)
D2130
1SS355V
M
R 2 1 1 4
3 3 K
Q 2 1 0 4
C2713(GR)
Q 2 1 6 8 INC6002AC1-T112
R2346
10K
Q 2 1 6 4
I N C 6 0 0 2 A C 1 - T 1 1 2
Q 2 1 3 3
C 2 2 2 9 ( O / Y )
R2273 6.8K
D2145
1SS355VM
Q 2 1 8 3
K R C 1 0 2 S - R T K / P
R 2 2 8 8
4 7 K
R 2 2 8 4
4 7 K
R 2 1 1 0
3 3 K
C2132
3300P/100
C2136
3300P/100
C2134
3300P/100
C2123
3300P/100
C2126
3300P/100
C2130
3300P/100
C2128
3300P/100
C2148
330P/100
C2146
330P/100
C2150
330P/100
C2144
330P/100
C2145
330P/100
C2149
330P/100
C2147
330P/100
C 2 1 7 4
1 0 0 0 P / 2 5 0
C 2 1 7 3
1 0 0 0 P / 2 5 0
C 2 1 9 6
0 . 0 1 / 1 0 0
C2192
0.01/100
C2189
0.01/100
C 2 1 8 8
0 . 0 1 / 1 0 0
C2191
0 . 0 1 / 1 0 0
C 2 2 0 3
0 . 0 1 5 / 1 0 0
C 2 2 0 1
0 . 0 1 5 / 1 0 0
C 2 2 0 2
0 . 0 1 5 / 1 0 0
0 . 0 1 / 1 0 0
C 2 2 0 0
0 . 0 1 / 1 0 0
C 2 1 9 9
C2193
0.01/100
C2195
0.01/100
C 2 2 0 4
0 . 0 1 / 1 0 0
C 2 2 0 5
0 . 0 1 / 1 0 0
V N 5 0 0 0 0
J 2 1 0 1
A G 2 A G N D
C2168
0.1/100
C2166
0.1/100
C2171
0.1/100
C2165
0.1/100
C2170
0.1/100
C2167
0.1/100
C2169
0.1/100
C2178 47/50
C 2 1 0 6
1 0 / 5 0
C2177
10/100
C2176
10/100
R2347
1P1.0
C 2 2 0 7
1 0 / 1 0 0
C 2 2 0 8
1 0 / 1 0 0
C2198
0.047/100
C2197
0.047/100
Q 2 1 6 2
C 5 1 9 8 - O ( S 1 / E / S )
Q 2 1 5 6
C 5 1 9 8 - O ( S 1 / E / S )
Q 2 1 5 8
C 5 1 9 8 - O ( S 1 / E / S )
Q 2 1 5 0
C 5 1 9 8 - O ( S 1 / E / S )
Q 2 1 5 4
C 5 1 9 8 - O ( S 1 / E / S )
Q 2 1 5 2
C 5 1 9 8 - O ( S 1 / E / S )
Q 2 1 6 0
C 5 1 9 8 - O ( S 1 / E / S )
Q 2 1 6 1
A 1 9 4 1 - O ( S 1 / E / S )
Q 2 1 6 3
A 1 9 4 1 - O ( S 1 / E / S )
Q 2 1 5 5
A 1 9 4 1 - O ( S 1 / E / S )
Q 2 1 5 3
A 1 9 4 1 - O ( S 1 / E / S )
Q 2 1 5 1
A 1 9 4 1 - O ( S 1 / E / S )
Q 2 1 5 9
A 1 9 4 1 - O ( S 1 / E / S )
Q 2 1 5 7
A 1 9 4 1 - O ( S 1 / E / S )
R2280
3.3
R2277
3.3
R2279
3.3
R2282
3.3
R2283
3.3
R2281
3.3
R2278
3.3
R2126
100
R2130
100
R2132
100
R2148
100
R2147
100
R2145
100
R2146
100
R2149
100
R2144
100
R2150
100
R2324
100
R2205
120
R2200
120
R2201
120
R2204
120
R2206
120
R2202
120
R2203
120
R2231
470
R2228
470
R2234
470
R2229
470
R2230
470
R2233
470
R2232
470
R2181
820
R2196
820
R2184
820
R2199
820
R2190
820
R2193
820
R2187
820
R 2 1 0 7
1 . 0 K
R 2 1 0 6
1 . 0 K
R 2 1 0 1
1 . 0 K
R 2 1 0 3
1 . 0 K
R 2 1 0 5
1 . 0 K
R 2 1 0 4
1 . 0 K
R 2 1 0 2
1 . 0 K
R2208 1.0K
R2213 1.0K
R2207 1.0K
R2209 1.0K
R2211 1.0K
R2212
1.0K
R2210 1.0K
R2125 1.2K
R2131
1.2K
R2136
1.2K
R2133 1.2K
R2127 1.2K
R2129 1.2K
R2135 1.2K
R2122
1.8K
R2121 1.8K
R2117 1.8K
R2116 1.8K
R2118
1.8K
R2120 1.8K
R2119 1.8K
R2179 2.7K
R2188 2.7K
R2182 2.7K
R2191
2.7K
R2194 2.7K
R2185 2.7K
R2197 2.7K
R 2 1 3 9
3 3 K
R 2 1 4 3
3 3 K
R 2 1 4 0
3 3 K
R 2 1 4 1
3 3 K
R 2 1 3 7
3 3 K
R 2 1 4 2
3 3 K
R 2 1 3 8
3 3 K
R2165
47K
R216
8
47K
R2167
47K
R2166
47K
R2169
47K
R2171
47K
R2170
47K
R2316 150K
R S 6 0 3 M - B - C - J 8 0
D 2 1 4 6
C2206 47/50
Q 2 1 4 8
T T C 0 0 4 B ( Q )
Q 2 1 4 0
T T C 0 0 4 B ( Q )
Q 2 1 3 8
T T C 0 0 4 B ( Q )
Q 2 1 4 2
T T C 0 0 4 B ( Q )
Q 2 1 4 6
T T C 0 0 4 B ( Q )
Q 2 1 3 6
T T C 0 0 4 B ( Q )
Q 2 1 4 4
T T C 0 0 4 B ( Q )
Q 2 1 4 5
T T A 0 0 4 B ( Q )
Q 2 1 3 7
T T A 0 0 4 B ( Q )
Q 2 1 3 9
T T A 0 0 4 B ( Q )
Q 2 1 4 3
T T A 0 0 4 B ( Q )
Q 2 1 4 9
T T A 0 0 4 B ( Q )
Q 2 1 4 7
T T A 0 0 4 B ( Q )
Q 2 1 4 1
T T A 0 0 4 B ( Q )
S P R Y _ S U R
M U T E _ S U R
SPRY_SUR
R2253
3P0.22X2
R2252
3P0.22X2
R2251
3P0.22X2
R2255
3P0.22X2
R2249
3P0.22X2
R2254
3P0.22X2
R2250
3P0.22X2
R2195
390
R2186
390
R2192
390
R2189
390
R2180
390
R2183
390
R2198
390
CB225 52045
1 2 3 4 5 6 7 8 9
10 11 12 13 14 15 16 17 18 19
Q 2 1 9 2
C 2 7 1 2 - Y ( T E 8 5 R , F
R2351 100K
C2209
no_use
R2353
no_use
R2354
no_use
R 2 3 5 2
n o _ u s e
J 2 1 0 2
n o _ u s e
D2160
no_use
D2159
no_use
J 2 1 0 3
n o _ u s e
C 2 1 0 1
1 0 / 5 0
C 2 1 0 3
1 0 / 5 0
C 2 1 0 2
1 0 / 5 0
R2123
100
R2124
100
C2125 47/16
C2124 47/16
C2163 10/50
C2162 10/50
C2164 10/50
C 2 1 0 5
1 0 / 1 6
C 2 1 0 4
1 0 / 1 6
C 2 1 0 7
1 0 / 1 6
C2127 47/35
C2133 47/35
C2129 47/35
R2134
330
R2128
330
C2161 22/50
C2160 22/50
C2158 22/50
R 2 2 9 3
8 2 K
R 2 2 9 6
8 2 K
R 2 2 9 2
5 6 K
R 2 2 9 5
6 8 K
R 2 2 9 1
6 8 K
R 2 2 9 8
5 6 K
R 2 2 9 7
4 7 K
R 2 2 4 2
1 0
R 2 2 3 5
1 0
R 2 2 4 8
1 0
R 2 2 3 8
1 0
R 2 2 4 4
1 0
R 2 2 4 6
1 0
R 2 2 4 0
1 0
R 2 2 4 5
1 0
R 2 2 3 7
1 0
R 2 2 4 7
1 0
R 2 2 4 3
1 0
R 2 2 3 6
1 0
R 2 2 3 9
1 0
R 2 2 4 1
1 0
R2224
120
R2218
120
R2225
120
R2217
120
R2216
120
R2214
120
R2219
120
R2215
120
R2222
120
R2220
120
R2227
120
R2221
120
R2223
120
R2226
120
R 2 2 5 6
4 . 7 K
R 2 2 6 2
4 . 7 K
R 2 2 6 0
4 . 7 K
R 2 2 5 9
4 . 7 K
R 2 2 6 1
4 . 7 K
R 2 2 5 8
4 . 7 K
R 2 2 5 7
4 . 7 K
W 2 1 0 4 A
M H 4 0 0 2 2
W 2 1 0 4 B
M H 4 0 0 2 2
Q 2 1 7 2
K T A 1 5 7 2 - A T / H
R2303
100K
R 2 3 5 5
10K
R 2 3 5 6
10K
2 2 1
R B W S - 0 4 0 9 E - V O
n o _ u s e
3 2 2 E T
6 7 - 1 0 - 5 V 4 0 2 - T S M
2
D E R
1
K C A L B
4
D E R
3
K A C L B
G
W 2 1 0 2 A
S C N - S C N
M B 3 0 5 2 0
W 2 1 0 2 B
S C N - S C N
M B 3 0 5 2 0
W 2 1 0 3 B
S C N - S C N
M B 3 0 4 2 8
W 2 1 0 3 A
S C N - S C N
M B 3 0 4 2 8
R2311 100K
R2312 100K
4 7 K
R 2 1 7 4
4 7 K
R 2 1 7 8
4 7 K
R 2 1 7 5
4 7 K
R 2 1 7 6
R 2 1 7 2
4 7 K
4 7 K
R 2 1 7 7
R 2 1 7 3
4 7 K
R2307
12K
R2306
15K
T E 2 2 1
M S T - 2 0 4 V 5 - 0 1 - 7 6
s 2 2 1
2
R E D
1
B L A C K
4
R E D
3
B L C A K
5
G
T E 2 2 2
s 2 2 2
2
R E D
1
B L A C K
5
R E D
4
B L A C K
8
R E D
7
B L A C K
6
G
3
G
W 2 1 1 2
CB223
5 1 0 4 8
1
2
3
C2186
6800/63
C2185
6800/63
6 2 2 Y R
O - 2 D 4 2 H E
7
6
8
R Y 2 2 6
E H 2 4 D 2 - O
4
3
5
C2131 47/16
C2135 47/16
RY226
EH24D2-O
12
C 2 2 1 3
n o _ u s e
C 2 2 1 2
n o _ u s e
C 2 2 1 4
n o _ u s e
C 2 1 4 0
2 2 P / 2 5 0
C 2 1 4 3
2 2 P / 2 5 0
C 2 1 3 7
2 2 P / 2 5 0
C 2 1 4 1
2 2 P / 2 5 0
C 2 1 4 2
2 2 P / 2 5 0
C 2 1 3 8
2 2 P / 2 5 0
C 2 1 3 9
2 2 P / 2 5 0
S L
MUTE_S
N C
PS1_PRT MUTE_SW
VOL_MOSI SPRY_3CH
HPRY
AMP_OLV
HP_N_DET
E
SPRY_SB
DGND
D C _ P R T
TRANS_RY
VOL_SCK
E
THM2_PRT
L i n e 0 . 2 5 m m
SBL
+ L B
S P R Y _ S
- L B
B L U E
C
F L
H P R
S R
A C _ B L
+ B
A M P _ L M T
A C _ B H
C
S B R
( S P R Y _ S B )
R E D
+ 1 2 R Y
Z C 3 2 4 3 0
A C _ B L
B L U E
A C _ B H
H P _ N _ D E T
S P R Y _ F
H P L
F L
S L
M F 0 0 3 1 0
S P R Y _ C
A G 2
- B
T W I S T E D P A I R
H P E
F R
F L
S c r e w : W E 7 7 4 2 0
M A I N ( 1 )
H P R Y
- 1 2 R Y
R E D
S L
F R
S R
S R
I_PRT
AMP_LMT
DC_PRT
MUTE_3ch
N C
t o D I G I T A L
FFC 19P P=1.25mm L=100mm
to OPE(7) (HEAD PHONE)
SAN-PH 4P #28 L=400mm
VH 6P #18 L=180mm
from POWER TRANS
FLAT 4P P=2.0mm L=100mm
to OPE(4) (POWER)
I t y p e
W I R E _ O U T
SCN-SCN 5P
#22 L=200mm
SCN-SCN 4P
#22 L=280mm
T-T 1P
#18 L=220mm
F R
C
F L
N C
S L
S R
N C
F R
F L
F R
F L
n o _ u s e
n o _ u s e
n o _ u s e
n o _ u s e
S L
S B R
S B L
F R
C
S R
F L
C
F R
MUTE_SB
SPRY_SUR
Details of colored lines
Red / full line: Power supply (+)
Red /dashed line: Power supply (-)
Orange: Signal
detect
Yellow: Clock
Green: Protection
detect
Brown: Reset signal
Blue: Panel key input
MAIN (1)
SPEAKERS
FRONT
L/R
CENTER
SURROUND/
BI-AMP
L/R
5 k-ohms
10 W
5 k-ohms
10 W
BRIDGE DIODE
TEMPERATURE
Note:
Precaution for handling measuring instrument
Since the speaker output of this unit is BTL connected, the ground side of the
measuring instrument to be connected to the speaker terminal
MUST be kept in floating condition. MUST be kept in floating condition.
注意：
計測機器取り扱い上の注意
本機のスピーカー出力はBTL接続となっていますので、スピーカー端子
に接続する計測器のアース側はフローティング状態に保つ必要があります。
to DIGITAL_CB22
Page 98 H1
to POWER TRANSFORMER
to OPERATION (7)_CB477
Page 103 S12
to OPERATION (4)_CB522
Page 104 K15
注意 )
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。
MAIN
（
1
）
P.C.B.
の
C2815
、
C2816
Notes)
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.
C2815, C2816 on MAIN (1) P.C.B.