Yamaha RX-V771 Service Manual page 117

A B C
RX-V771
MAIN 2/2
1
AV 1 AV 2 AV 3 AV 4
OPTICAL COAXIAL COAXIAL OPTICAL
(CD) (TV)
DIGITAL IN
2
3 CB152
Page 116 D10
4
to OPERATION (2)_CB451
Page 116 E10
to OPERATION (2)_CB452
5
CB153
Page 116 F10
to OPERATION (2)_CB453
6
CB154
Page 116 G10
to OPERATION (2)_CB454
7
CB155
8
9
10
★ Components having special characteristics are marked
and must be replaced ●
with parts having specifications equal to those originally installed. 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。
★ Schematic diagram is subject to change without notice.
● 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。
118
D E F
AV 5 AV 6 AV OUT AUDIO 1
ANALOG IN
IC153
SURROUND L
SURROUND
CENTER
SUB
BACK L
WOOFER
ANALOG IN
Page 118 H4
to MAIN (1)_CB157
CB158
MAIN (1)
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、
G H
AUDIO 2
W117B W117A
CB157 Page 118 C7
to MAIN (1)_CB158
FRONT L
I J K
AUDIO OUT ZONE 2 OUT FRONT
L/R
IC154
IC154
Page 111 H9
to DIGITAL (1)_CB85
IC154: NJM4565M (TE1)
IC152: TC74VHCU04FT
Dual operational amplifier
Hex inverters
V+
1A 1 14 VCC 8
1Y 2 13 6A
2A 3 12 6Y 2, 6
–INPUT OUTPUT
1, 7
4 11 5A +INPUT
2Y
3, 5
3A 5 10 5Y
3Y 6 9 4A
V–
GND 7 8 4Y
4
L M N
PRE OUT
SUB- SUB-
SURROUND SUR. BACK CENTER
WOOFER 1 WOOFER 2
L/R L/R
IC153: R2A15220FP
8-channel electronic volume with 11 input selector and tone control
50 49 48 47 46 45 44 43 42 41 40 39 38 37 36 35 34 33 32 31
TRER
MUTE 51 30
MCU
AVEE
AVCC
I/F
A VEE 52 29 BASSR2
ADCL 53 28 BASSR1
0/-6/-12/-18dB
ATT
TREL
ADCR 54 27
SUB2
AGND 55 26 BASSL2
MAIN
INR1
56 Bass/Treble 25 BASSL1
0~-95dB, -14~+14dB +42~0dB
-∞ (2dBstep) (0.5dBstep)
INL1 57 (0.5dBstep) 24 FRC
Bypass
Tone
INR2
58 Tone+MIX 23 FR Pre-OUT
Tone
SUB
INL2 59 +42~0dB 22 FROUT
(0.5dBstep)
Tone+MIX
INR3 60 Tone Tone 21 AGND
Bypass
INL3 FLOUT
61 20
0~95dB, Bass/Treble
-∞ -14~+14dB
INR4 62 (0.5dBstep) (2dBstep) 19 FL Pre-OUT
INL4 63 FLC
18
+42~-95dB
-(0.5dBstep)
INR5 CC
64 17
INL5 COUT
65 16
+42~-95dB
INR6 66 -∞(0.5dBstep) 15 AGND
+42~-95dB
-∞(0.5dBstep)
INL6 67 14 SWOUT
INR7 68 13 SWC
INL7 69 +42~-95dB 12 SRC
-∞(0.5dBstep)
INR8 70 11 SR Pre-OUT
REC
INL8 71 10 SROUT
+42~-95dB
-∞(0.5dBstep)
72 9 A GND
INRA/RECR1
INLA/RECL1 73 8 SLOUT
74 7
INR9 SL Pre-OUT
+42~-95dB
-∞(0.5dBstep)
INL9 75 6 SLC
INRB/RECR2
76 5 AGND
INLB/RECL2 77 4
SBRC
INR10/RECR4 78 3 SBR Pre-OUT
INR10/RECL4 SBR OUT
79 2
INR11/RECR5 80 1 AGND
81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100