88
88 8
CHIP SELECT
I
2
C BUS
TRANSCEIVER
I/O PORT
DATA LATCHES
PWR
RES
OUT I/O IN
SHIFT
REG
8
3426 G4
3427 G11
3428 G11
3429 G5
3430 G5
3431 G9
3432 G3
7400-B C3
7402 D8
7403 F3
7404 F2
7405 F4
7406 F12
7407 G2
7408 G3
7409 G9
7410 G4
7411 H8
8302 E12
9268 G8
OUT
FAN
D
E
F
2406 D1
2407 D3
2408 D1
2409 D3
2410 D5
2411 E3
2412 E4
2413 E1
2414 F2
2415 E8
2416 D8
2417 F4
2418 H2
GND_A
from Source Selector 7506
+
3433 G4
3434 G10
3435 H14
3436 H5
3437 H8
3438 H10
3439 H5
3440 H7
6400 D8
6401 G14
6402 H8
7400-A D3
9 1011121314
123
HP_LEFT
-
FROM/TO HP SOCKET BOARD
HP_RIGHT
4567
G
H
1004 E1
1014 G1
1400 D13
1401 E9
2400 B3
2401 C3
2402 B5
2403 C1
2404 C3
2405 C4
F
G
H
A
B
C
BC817-25
BC817-25
BC817-25
BC817-25
2419 H2
2420 H5
2421 H14
3400 B3
3401 C3
3402 C5
3403 C2
3404 C2
HP_DET
SUBWOOFER
12345678
3412 D8
3413 D3
3415 E3
3418 E2
3419 F2
3420 F3
3421 F3
3422 F4
3423 F5
3424 G2
3425 G4
8 9 10 11 12 13 14
A
B
C
D
E
3405 C2
3406 C4
3407 D2
3408 D2
3409 D2
3410 D5
3411 D7
5K6
3437
10K
3423
100p
2404
470p
2401
100n
2413
4K7
3411
27K
3403
1
2
3409
27K
1401
EH-B
2R2
3440
NJM4556AM
7400-B
5
6
7
6K8
3408
7405
BC857BW
10K
3412
5R6
YKC21-3416
1
3
2
3428
2K2
3421
1004
+5V
10K
3424
3435
270R
2406
470u
100u
2410
CS1
14
CS2
4
D0
D1
56
D2
7
D3
9
D4
10
D5
11
D6
D7
12
8
GND
2
SCL
3
SDA
1
SO
13
VDD
M62320FP
7406
CS0
16
15
2421
100n
1u
2403
2402
100u
6405
BAS316
1K
3433
3404
6K8
100p
2400
6402
1N4148
7410
BC857BW
BC817-25W(COL)
7409
+5V
+5V6
2420
1u
4K7
3407
2408
1u
470R
3413
GND_D
39R
3430
+5V
3420
2K2
3418
470R
+5V_CD
1K
3432
22u
2412
39R
3425
10R
3406
3429
GND_A
3431
5K6
39R
2414
470p
2419
100p
3K3
3402
BZX384-C4V7
6400
2407
100p
2K2
3434
3401
470R
100p
2418
3405
5K6
7404
BC337-40
7402
3419
2K2
2405
4u7
27K
3400
7408
4K7
3422
1N4148
6401
7403
GND_A
3
2
1
8
4
3410
3K3
7400-A
NJM4556AM
2417
1u
+5V6
10K
3427
3426
39R
7407
1u
2415
4K7
3436
1014
FE-BT-VK-N
1
2
3
4
10K
3439
+5V
7411
BC807-25W(COL)
10K
3438
3415
27K
2416
2409
470p
2411
100p
100u
AMP_OFF
AMP_OFF
AMP_RELAIS
FAN_CONT
+12V_M
+5V
I2C_CLK
I2C_DATA
OZ_SW
AMP_LEFT
AMP_RIGHT
AMP_MUTE
+5V6
V_MID
+12V_A
SUB_W
VOL_LEFT
VOL_RIGHT
HP_DET
HP_DET
MUTE_HP
MUTE_HP
+12V_A
MUTE_SW
MUTE_SW
MIC_DET
A
UDIO
F
REQUENCY
& L
OGIC
P
ART
Power2002 Class D Combi-Audio Frequency Part 2002 04 25
A
1
1
3
3
3
5
2
FAN
+
-
4K7
3411
1
2
1401
EH-B
3412
5R6
BC337-40
7402
1u
2415
2416
100u
FAN_CONT
+12V_M
5
2
4
3
5
FAN CONTROL for Layout stage .6
Fan runs always. Higher volume increase the speed.
HEADPHONE AMPLIFIER
5.2V
11.5V
7.5V
8.2V
4.8V
4.6V
0.8V
0.8V
4.8V
4.8V
4.1V = MUTE
4.8V = ACTIVE
4.1V
4.4V
4.7V
3.9V
0V
0.7V
4.1V
11.5V
5.2V
5.2V
FAN CONTROL for Layout stage .7
Fan runs not at low volumes.
Higher volume starts the fan.
The fan-speed depends on the output power.
11.5V
1V..10.3V
1.5V..11V
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