
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U302 TC9273
1
2
3
4
5
6
7
8
9
10
11
12
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14
15
16
U301 4053
VIDEO3 OUT
VIDEO4 OUT
VIDEO2 IN
VIDEO1 IN
VIDEO3 IN
VIDEO4 IN
FR
GND
FL
+12V
-12V
V5_R
CD_R
T_R
T_I_R
T_O_R
V5_L
CD_L
T_L
T_I_L
T_O_L
T_MON
DGND
LATCH
DATA
CLK
R301 330R
R302 330R
R303 1M
R304 1M
R305
330R
R306 1M
R307
330R
R308 1M
R309
2K2
R310 1M
R311
2K2
R312 1M
R315
2K2
R316
2K2
R319 1M
R320 1M
R321
2K2
R322
2K2
R323 1M
R324 1M
R325
2K2
R326
2K2
R327 1M
R328 1M
R331
1K
R330
1K
C301
100P
C302 100P
C303
100P
C304
100P
C305
100P
C306
100P
C309
100P
C310
100P
C311
100P
C312
100P
C313
100P
C314
100P
C315 0.01U
C316 0.01U
C317 0.02U
C318 0.02U
C319
3U3/16V C320
3U3/16V C321
3U3/16V
C322
3U3/16V C323
3U3/16V C324
3U3/16V
C325 100U/10V
C326
100U/10V
C327
47U/16V
C328
47U/16V
Z301 7V5
Z302 7V5
Q301 DTC144
R329 1K
1
2
3
4
5
6
7
8
9
10
J709B 10PIN
1
2
3
4
5
6
7
8
9
10
J710B 10PIN
AUDIO
R427
82R
R426
82R
R422
0R
R425
82R
R424
82R
R420
0R
R423
0R
C406
47U/10V
C407
47U/10V
C408
470U/16V
C409
47U/10V
C410
47U/10V
C411
470U/16V
C412
1000U/16V
V_5 IN
MON_OUT
DGND
CT_C
CT_B
+12V
CT_A
CT_D
V
-12V
VIDEO3 IN
VIDEO4 IN
VIDEO3 OUT
VIDEO1 IN
VIDEO2 IN
VIDEO4 OUT
MON_OUT
1
2
3
4
5
6
7
8
9
10
J714B 10PIN
X4
1
X6
2
COM
3
X7
4
X5
5
INH
6
VEE
7
GND
8
C
9
B
10
A
11
X3
12
X0
13
X1
14
X2
15
VCC
16
U401 CD4051A
Q401
DTC114
Q402 DTC114
Q403 DTC114
R405 10K
R406 10K
R407 10K
Q404
2SA933S
Q405
2SA933S
Q406
2SA933S
R410150R
R414
150R
R417 150R
R409
20K
R41320K
R415 20K
R416 20K
R411 20K
R412 20K
C403
100U/16V
C404
100U/16V
C405
100U/16V
Q407
2SC2878
Q408 DTC114
Q409 DTC114
R403
2.2K
R404
2.2K
Q410
2SA2878
Q411 DTC114
Q412 DTC114
R421
1K
R419
1K
R428
2.2K
R429
2.2K
Z402 7V5
C402
100U/16V
R402
1K
Z401 7V5
C401
100U/16V
R408 1K
CT-A
CT-B
CT-C
INPUT
VIDEO1
VIDEO2
VIDEO3
VIDEO4
VIDEO5
HH
H
HH
L
HL
H
L
LH
HH
L
D401
1N4148
D402
1N4148
D403 1N4148
D404
1N4148
C415
0.1u
AGND
VIDEO
NOTE:
1. RESIST
ORS,
ARE CARBON FILM 5% 1/8W UNLESS OTHER
WISE SPECIFIED.
2. CERAMIC CAP
ACIT
ORS,
ARE 50V 10%. UNLESS OTHER
WISE SPECIFIED.
NOTE:
1. RESIST
ORS
ARE CARBON FILM 5% 1/8W
UNLESS OTHER
WISE SPECIFIED.
2. CERAMIC CAP
ACIT
ORS
ARE 50V 10%.
UNLESS OTHER
WISE SPECIFIED.
Summary of Contents for T741
Page 1: ...NAD T 741 SURROUND SOUND RECEIVER T 741S U R R O U N D SOUND RECEIVER SERVICE MANUAL ...
Page 9: ...11 ...
Page 12: ...14 PCB LAYOUT S VIDEO BOARD VIDEO 5 BOARD VOLUME BOARD ...
Page 13: ...15 VIDEO BOARD TUNER BOARD ...
Page 14: ...16 SURROUND AMPLIFIER BOARD PRIMARY BOARD SECONDARY BOARD ...
Page 15: ...17 AUDIO BOARD PSU BOARD ...
Page 16: ...18 MULTI CHANNEL BOARD COMPONENT SIDE ...
Page 17: ...19 MULTI CHANNEL BOARD SOLDER SIDE ...
Page 18: ...20 MAIN BOARD ...
Page 19: ...22 21 AC3 BOARD COMPONENT SIDE AC3 BOARD SOLDER SIDE ...
Page 20: ...23 24 KEY BOARD DIGITAL BOARD SPEAKER BOARD LED BOARD POWER SWITCH BOARD ...
Page 64: ...SERVICE MANUAL NAD 2001 T 741 SURROUND SOUND RECEIVER NAD ELECTRONICS INTERNATIONAL TORONTO ...