47
1
2
3
4
5
6
7
8
9
10
DIR
A1
A2
A3
A4
A5
A6
A7
A8
GND
20
19
18
17
16
15
14
13
12
11
VCC
G
B1
B2
B3
B4
B5
B6
B7
B8
(1)
(2)
(3)
(4)
(5)
(6)
(7)
(8)
(9)
(11)
(19)
(18)
(17)
(16)
(15)
(14)
(13)
(12)
OE
CK
D0
1D
C1
EN
D1
D2
D3
D4
D5
D6
D7
Q0
Q1
Q2
Q3
Q4
Q5
Q6
Q7
74LVQ574
DSP BOARD: U1008, U1009
W27C020
DSP BOARD: U1007
Q0
Q7
CE
OE
A0
CONTROL
OUTPUT
BUFFER
CORE
ARRAY
DECODER
PGM
VCC
GND
VPP
A17
31
22
24
IC BLOCK DIAGRAM
74LVC245
DSP BOARD: U1002, U1003, U1014
74VHC245
KEYBOARD: U209
NJM5532
DSP BOARD: U1010~U1013, U1023 & U1025
MULTI-CHANNEL: U6104~U607
PRE-OUT BOARD: U609~U613
AUDIO BOARD: U305
ISC BOARD: U801
1
A
- +
2
3
4
8
7
6
5
B
+ -
CS4228AKS
DSP BOARD: U1021
Summary of Contents for T753
Page 2: ...2 SAFETY INFORMATION AH VERSION C VERSION ...
Page 11: ...11 BLOCK DIAGRAM ...
Page 14: ...14 PCB LAYOUT AUDIO BOARD POWER SUPPLY STANDBY BOARD ...
Page 16: ...16 DSP BOARD COPPER SIDE DSP BOARD COMPONENT SIDE ...
Page 17: ...17 FRONT CENTER AMPLIFIER BOARD COMPONENT SIDE ...
Page 18: ...18 FRONT CENTER AMPLIFIER BOARD COPPER SIDE ...
Page 19: ...19 SURROUND AMPLIFIER BOARD COMPONENT SIDE ...
Page 20: ...20 SURROUND AMPLIFIER BOARD COPPER SIDE ...
Page 21: ...21 KEY BOARD POWER SWITCH COMPONENT SIDE KEY BOARD POWER SWITCH COPPER SIDE ...
Page 22: ...22 MAIN BOARD ...
Page 23: ...23 MULTI CHANNEL BOARD COMPONENT SIDE ...
Page 24: ...24 MULTI CHANNEL BOARD COPPER SIDE ...
Page 25: ...25 PRE OUT BOARD COPPER SIDE PRE OUT BOARD COMPONENT SIDE ...
Page 26: ...26 SPEAKER TERMINAL BOARD POWER SWITCH TRIGGER BOARD VIDEO 6 BOARD ...
Page 27: ...27 SECONDARY ISC BOARD COMPONENT SIDE SECONDARY ISC BOARD COPPER SIDE ...
Page 28: ...28 S VIDEO BOARD ...
Page 29: ...29 COMPOSITE VIDEO BOARD COMPONENT SIDE COMPOSITE VIDEO BOARD COPPER SIDE ...
Page 37: ...37 SPEAKER A B ...
Page 53: ...53 LC74763 S VIDEO BOARD U4101 ...
Page 54: ...54 M61516FP MULTI CHANNEL BOARD U6101 U6102 ...
Page 80: ...80 SERVICE MANUAL T 753 Phase II Surround Sound Receiver NAD ELECTRONICS LTD LONDON ...