Yamaha RX-V557 Service Manual page 55

A B
1
BLOCK DIAGRAM (2/2)
RX-V457/HTR-5840/DSP-AX457
OPERATION (4)
• See page 85 → SCHEMATIC DIAGRAM
V-AUX
Input
DVD
Selector
1
LA7956
DTV/CBL
IC901
VCR
2
Q903
VCR
SUBTRANS (6) SUBTRANS (3)
• See page 90 → SCHEMATIC DIAGRAM • See page 90 → SCHEMATIC DIAGRAM
43
DVD
2 1
Input Y
3 Selector
43
DTV/CBL
2 1 LA7956
C
IC601,602
43
VCR
2 1
Q605
43
VCR
2 1
Q606
(U, C, R, T, K, A, B, G, E, L models)
4
SUBTRANS (4)
• See page 90 → SCHEMATIC DIAGRAM
Y,Cr,Cb
DVD
DTV/CBL
Y,Cr,Cb
DVD
DTV/CBL
(J model)
L1,L2,L3
VIDEO
• See page 92 → SCHEMATIC DIAGRAM
5
OPERATION (1)
• See page 85 → SCHEMATIC DIAGRAM
75
IR REMOTE
U801
74
POWER SW
SW861
88,89
VOLUME
SW801
6
84,85
INPUT SELECTOR
SW802
94,95
KEY
SW803-819,823,824,866,867
83,100,
FL DISPLAY FL DRIVER
1,2
V801 IC801
7
SUBTRANS (2)
C D
V
43
2 1
Input
IC702
Selector 1,3,51 3,11,9
74HC4053
NJM2581M
IC701
IC853
Input 1,3,51 3,11,9
Selector
NJM2581M
74HC4053
IC851,852
70
POWER RELEY
71,72,76,77,78
SPEAKER RELEY
38,39,40,42,43
MUTE CONTROL
81
POWER SAVE
MICRO COMPUTER
79
/4ohms
M30622
IC451
59
XMPWR
DSP
TUNER/XM
SERIAL CONTROL
13 15
SELECTOR/VOLUME
XL451
16MHz
• See page 90 → SCHEMATIC DIAGRAM
E F G
POWER
RY401 F1
TRANSFORMER
POWER
• See page 87 →
SCHEMATIC DIAGRAM
XM
(U, C models)
• See page 93 →
SCHEMATIC DIAGRAM
Power Detector
IC401,402,
/Reset
403
Q402,403
T401
SUBTRANS (1)
• See page 90 → SCHEMATIC DIAGRAM
H I
RX-V557/HTR-5850/DSP-AX557
RX-V457/HTR-5840/DSP-AX457
/ 4ohms
RY126
MAIN (2)
+B
• See page 86 →
SCHEMATIC DIAGRAM
G
-B
RY126
+BL
G
-BL
-30V
-VP
Q120
+9V
+12V
+12
IC302
G
-12V
-12
IC303
+5V
+5V
+5D
IC304
+3.3V
+3.3D
IC306
G
-5V
-5V
IC305
+5V
+5BUS
IC27
+5V
+5X
IC22
+3.3V
+3.3X
IC21
G
FL1
OPERATION (2)
FL2 • See page 85 →
SCHEMATIC DIAGRAM
SUBTRANS (2)
• See page 90 → SCHEMATIC DIAGRAM
D453
+5BU
D452
s10 +5.5V
+5M
IC452
D451 Q501
+5S
G
POWER RELAY POWER SAVE
J
55