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HBD-E280/T28
5-23. SCHEMATIC DIAGRAM - AMP Board (1/2) -
1
2
3
4
A
AMP BOARD (1/2)
B
D3551
MC2840-T112-1
C3948
JL3551
R3551
C3552
100k
C3947
0.1
0
C3946
R3553
C
C3945
10k
3.3
R3554
10k
Q3551
C3551
R3552
DSC500100L
0.1
1M
OUTPUT LEVEL
EB3002
DETECT
R3312
C3328
100k
2.2
D
SL3000
15.3
15.3
15.3
15.3
-1
-2
R3558
R3557
JL3313
4.7k
33k
Q3302
0
0
Q3553
RT3AMMM
DSC500100L
3.3
OVER LOAD
DC DETECT
DETECT
E
0
R3559
R3560
C3319
C3322
C3325
C3326
1.5k
100k
0.1
100
2200
0.1
35V
35V
Q3552
C3555
EB3008
RT3CLLM
0.1
C3324
PROTECT
0.7
1
DETECT
0
F
-1
3.3
-2
0
TP3308
C3320
0.1
SL3001
G
JL3060
SL3002
IC B/D
44
43
42
41
40
39
38
H
IC3300
POWER AMP
IC3300
CXD9981TN
1
2
3
4
5
6
I
C3301
R3045
C3302
C3554
0.1
0
0.1
0.01
R3556
22k
R3334
R3333
R3555
C3553
47
J
47k
47
10V
C3003
0.001
K
L
M
HBD-E280/T28
• See page 55 for IC Block Diagrams.
5
6
7
(Page 52)
SPEAKER
B
BOARD
CN451
CN3300
5P
1000p
C3942
1000p
0.01
C3941
0.01
1000p
C3944
1000p
0.01
C3943
0.01
R3310
R3307
C3327
R3309
100k
100k
2.2
100k
R3311
R3308
100k
100k
15.3
15.3
15.3
15.3
-1
-2
JL3311
JL3310
JL3312
0
0
Q3301
RT3AMMM
OVER LOAD
DETECT
C3318
C3321
C3309
C3312
C3315
C3316
C3308
C3311
0.1
100
0.1
100
2200
0.1
0.1
100
35V
35V
35V
35V
C3323
C3314
C3313
1
1
1
2
4
2
4
L3302
L3301
10uH
10uH
1
3
1
3
TP3307
TP3306
TP3305
C3317
C3310
C3307
0.1
0.1
0.1
IC B/D
37
36
35
34
33
32
31
30
29
28
27
26
25
24
23
IC3200
POWER AMP
IC3200
CXD9981TN
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
C3303
1
R3303
C3304
C3305
C3306
R3044
R3043
22k
0.1
0.1
0.1
0
0
R3332
R3331
47
47
47
8
9
10
11
(Page 52)
SPEAKER
C
BOARD
CN451
CN3200
5P
C3928
1000p
C3922
1000p
C3927
0.01
C3921
0.01
C3926
1000p
C3924
1000p
C3925
0.01
C3923
0.01
R3210
R3207
R3212
C3228
C3227
R3209
100k
100k
100k
2.2
10
100k
R3211
R3208
100k
100k
15.3
15.3
15.3
15.3
15.3
15.3
15.3
-1
-2
-1
-2
JL3213
JL3212
JL3211
0
0
0
0
Q3202
RT3AMMM
RT3AMMM
OVER LOAD
OVER LOAD
DETECT
C3219
C3222
C3225
C3226
C3218
C3221
C3209
C3212
C3215
0.1
100
2200
0.1
0.1
100
0.1
100
2200
35V
35V
35V
35V
35V
C3224
C3223
C3214
C3213
1
1
1
1
2
4
2
4
L3202
L3201
10uH
10uH
1
3
1
3
TP3208
TP3207
TP3206
TP3205
C3220
C3217
C3210
0.1
0.1
0.1
44
43
42
41
40
39
38
37
36
35
34
33
32
31
30
29
28
27
26
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
C3203
1
R3203
C3201
C3202
C3204
C3205
C3206
22k
0.1
0.1
0.1
0.1
0.1
R3234
R3233
R3232
R3231
47
47
47
47
Note: When IC3100, IC3200 and IC3300 on the MAIN board are replaced, spread the compound
referring to "NOTE OF REPLACING THE IC3100 AND IC3200 ON THE AMP BOARD
AND THE COMPLETE AMP BOARD" on servicing notes (page 9).
50
50
12
13
14
15
CN3100
6P
C3918
1000p
C3917
0.01
C3916
1000p
C3915
0.01
R3110
R3112
C3128
100k
100k
2.2
R3111
100k
15.3
15.3
15.3
15.3
15.3
-1
-2
JL3210
JL3113
JL3112
0
0
Q3201
Q3102
RT3AMMM
OVER LOAD
DETECT
DETECT
C3216
C3208
C3211
C3119
C3122
C3125
C3126
C3118
0.1
0.1
100
0.1
100
2200
0.1
0.1
35V
35V
35V
C3124
C3123
1
1
2
4
L3102
10uH
1
3
TP3108
TP3107
C3207
C3120
C3117
0.1
0.1
0.1
IC B/D
25
24
23
44
43
42
41
40
39
38
37
36
35
IC3100
POWER AMP
IC3100
CXD9981TN
20
21
22
1
2
3
4
5
6
7
8
9
10
R3103
R3042
R3041
C3101
C3102
22k
0
0
0.1
0.1
R3134
R3133
47
47
16
17
18
(Page 52)
SPEAKER
D
BOARD
CN451
C3912
1000p
C3911
0.01
C3914
1000p
C3913
0.01
EB3001
R3107
C3127
R3109
100k
2.2
100k
R3108
100k
15.3
15.3
15.3
15.3
-1
-2
JL3111
JL3110
0
0
Q3101
RT3AMMM
OVER LOAD
DETECT
C3121
C3109
C3112
C3115
C3116
C3108
C3111
100
0.1
100
2200
0.1
0.1
100
35V
35V
35V
35V
C3114
C3113
1
1
2
4
L3101
10uH
1
3
TP3106
TP3105
C3110
C3107
0.1
0.1
EB3007
34
33
32
31
30
29
28
27
26
25
24
23
11
12
13
14
15
16
17
18
19
20
21
22
C3103
1
C3104
C3105
C3106
R3040
0.1
0.1
0.1
0
R3132
R3131
47
47
AMP
91
BOARD
(2/2)
(Page 51)
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