2
A
B
C
D
E
F
G
H
I
J
1
3
4
5
7
RX-V550/HTR-5750
RX-V450/HTR-5740/DSP-AX450
6
50
■
BLOCK DIAGRAM (1/2)
RX-V550 U, C, A models only
RX-V550 only
except RX-V550
RX-V550 U, C, A models only
RX-V550 only
Except DSP-AX450
RX-V550, HTR-5750, DSP-AX450 only
CD L/R
MD/CD-R L/R
DVD L/R
DTV/CBL L/R
VCR L/R
V-AUX L/R
MD/CD-R L/R
VCR L/R
SURROUND L/R
SUB WOOFER
Front L/R
CENTER
A/D
AK4628VQ
IC16 1/2
DUTY
CORRECTOR
IC3,4
MD/CD-R
DVD
D-TV/CBL
3/5
54/53
51
49/50
48
46
88/89
84/85
86/87
94/95
94/95
75
74
69
72/76
81
78
73
12
1/7
IC303
MUTE
Q302,303
MUTE
Q306
MUTE
Q305
MUTE
Q753,756
MUTE
Q301,304
Power
Amp.
Power
Amp.
Power
Amp.
SL/SR
SW
SB
C
FRONT L/R A
Center
Surround Back
Sub Woofer
PHONES
IR REMOTE
U801
POWER SW
SW861
FL DRIVER
IC801
FL DISPLAY
V801
VOLUME
SW801
POWER RELAY
SPEAKER RELAY
MUTE CONTROL
POWER DETECT
/RESET
+5BU
SPEAKER
RELAY
MUTE
CONTROL
DSP
SELECTOR/
VOLUME
TUNER
SERIAL CONTROL
C871,874
C138,139
C140,141
C145
C143,142
C751,752,756
FRONT L/R B
V-AUX
Power
Amp.
Surround L/R
C144
XL1
24.576MHz
INPUT SELECTOR
SW802
MUTE
Q309,310
HP
FL/FR
HP
Amp.
IC305
FM/AM
TUNER
(11)
7.2MHz
3
1
IC304
FL/FR
MICRO COMPUTER
M30626
IC502
POWER SAVE
PROGRAM
SW803
/4ohm
DIR
LC89057W-VF4-E
IC2
INPUT
SELECTOR
DETECTOR
DECODER
POST PROCESSOR
YSS930-SZ
IC7
SELECTOR
74VHC157MTCX
IC14
INPUT SELECTOR
/REC OUT SELECTOR
INPUT GAIN (0dB ~ 7dB)
MASTER VOLUME (-95dB ~ 0dB)
OUTPUT GAIN (0dB ~ 17dB)
7ch SELECTOR
SDI
SDO
1M SRAM
CY6212BBLL
IC6
4M DRAM
MSM514260E-60JS
IC8
MAIN DECODER
YSS948-V
IC5
D/A
SB/-
D/A
SL/SR
D/A
FL/FR
AK4628VQ
IC16 2/2
D/A
C/SW
2/6
1/7
IC19
2
1
IC20
2/5
1/7
IC21
2/5
1/7
IC306
ZONE2 SELECTOR
BD3841FS
IC302
(RX-V550 U,C,A only)
ZONE2 OUT L/R
MUTE
Q501,502,504,505
C754,755
MUTE
CONTROL
Tone
Control
FRONT L/R
SELECTOR / VOLUME
BD3816K1 IC301
CENTER MIX
/LFE MIX
CENTER
Surroud L/R
Surroud Back
SW
MD/CD-R
CD
DUTY
CORRECTOR
IC1
KEY
SW804-821,866,867
FL/FR
C
SL/SR
SB
SW
XL501
16MHz
KEY
SW804,806-821
ZONE2 SELECTOR
DSP
• See page 75
→
SCHEMATIC DIAGRAM
OPERATION
• See page 80, 81
→
SCHEMATIC DIAGRAM
OPERATION
OPERATION
• See page 80, 81
→
SCHEMATIC DIAGRAM
• See page 80, 81
→
SCHEMATIC DIAGRAM
OPERATION
• See page 80, 81
→
SCHEMATIC DIAGRAM
MAIN
• See page 82
→
SCHEMATIC DIAGRAM
FUNCTION (2)
• See page 77, 79
→
SCHEMATIC DIAGRAM
FUNCTION (1)
• See page 76, 78
→
SCHEMATIC DIAGRAM
FUNCTION (8)
• See page 76, 78
→
SCHEMATIC DIAGRAM