11 - 1
11 - 1
L
H
L
H
LOGIC
LSB
MSB
LL
LH
HL
HH
LL
LH
HL
HH
STB
D
1
EN1
SRG8
1
0
1
1
CD_L
GND
CD_R
+5V
GND
0
0
0
0
0
1
0
1
1
0
1
0
1
1
0
1
COMBI BOARD
0V
0V
on
0
1
T591 I9
T558 C2
T590 I9
7505 D14
T592 J9
T593 J9
T594 J9
T595 B8
T596 E8
T557 C2
3572 H8
T559 D2
T561 D2
T562 E2
T563 E2
T564 E2
T565 F2
T566 F2
T567 F3
T568 F3
T569 F2
T570 G2
T571 G2
T572 G2
T573 G2
T587 I9
T588 I9
T589 I9
7504 E10
3533 C15
7506 F14
7507 B13
7508 I13
7509 D13
7510 H13
7511 A15
7512 I15
7513 B15
7514 I15
7550 I4
7551 B5
7552 H8
7553 F6
7555 B7
T554 C2
T555 C2
T556 B2
3568 I5
3500 A8
3573 I9
3574 G7
3575 C6
3576 C6
3577 B6
3578 D6
3579 B7
3580 D7
3581 C7
3582 E7
3583 B8
3584 E8
3585 C8
3586 E8
T574 H2
T575 H2
T576 I2
T577 I2
T578 I2
T579 I2
T580 I2
T581 J2
T582 J2
T583 J2
T584 J4
T585 G5
T586 H8
7501 C9
7502 E9
7503 C10
3532 G14
2525 D15
3534 G15
3535 C15
3536 G15
3537 A15
3538 J16
3539 B16
3540 I16
3541 A16
3542 J16
3543 B16
3544 I16
3545 C16
3546 H15
3547 B17
7556 D7
9551 C2
9553 D2
9554 F3
9555 G3
T500 A9
T501 B10
T503 C11
T504 F11
T550 D5
T551 A2
T552 A2
T553 B2
3563 G4
3565 J4
3566 J4
2573 A5
J
3501 B10
3502 B11
3503 B12
3505 D9
3506 F9
3507 C10
3508 E10
3509 D10
3510 F10
3511 D12
3512 G12
3513 E12
3514 F12
3515 E13
3587 B8
3588 D8
3589 G8
5550 F3
5551 F3
6500 B12
6550 J5
7500-A G11
7500-B G13
7500-C G15
7500-D D15
7500-E D13
7500-F D11
3529 C14
3530 H14
3531 C14
2524 G14
5
2526 G15
2527 B15
2528 I15
2529 C16
2530 H16
2531 C15
2532 H15
2533 C16
2534 H16
2535 B9
2550 A2
2551 A2
2552 B2
2553 B1
3548 I17
3551 A3
3552 A3
3553 B3
3554 B3
3555 C3
3556 B3
3557 D3
3558 E3
3559 E4
3560 E4
3561 F2
3562 F2
2569 B8
2570 D8
2571 G8
I
3.6V
1550 A1
1551 B1
1552 B2
1553 D2
1554 D2
1555 F2
1556 G2
2500 A9
2501 B11
2502 B11
2503 F15
2505 C9
2506 E9
2507 C10
3516 F13
3517 E13
3518 F13
3519 E14
3520 F14
3521 E14
3522 F14
3523 D14
3524 G14
3525 B13
3526 I13
3527 B14
3528 I14
2521 C14
2522 H14
2523 C14
DSC OFF/ON at CD Mode 1KHz , 0dB track, VOLUME"20"
4.1V
6
7
8
9
10
11
12
13
14
15
16
17
A
B
2554 H5
2555 I3
2557 H7
2558 J7
2559 J7
2560 J7
2561 G6
2563 B6
2564 D6
2565 B7
2566 D7
2567 B7
2568 D7
F
G
H
0
0
3.6V
4.05V
(230V MAINS SUPPLY ) DC VOLTAGES MEASURED IN :
1
2
3
4
5
6
7
8
9
10
11
2508 E10
2509 C10
2510 F10
2511 D11
2512 G11
2513 C12
2514 H12
2515 E12
2516 F12
2517 E12
2518 F12
2519 E13
2520 F13
CD Mode 1KHz , 0dB track, DSC "OPTIMAL", DBB "OFF", INCR "OFF", VOLUME "20"
Tuner Mode 1KHz , df "22.5kHz", DSC "OPTIMAL", DBB "OFF", INCR "OFF", VOLUME "20"
Standby Mode
BASS
JAZZ
2.05V
2.05V
2.05V
2.05V
2.05V
2.05V
2.1V
2.1V
0.67V
4.2V
5.35V
5.35V
5.35V
3.55V
C
D
E
F
G
H
I
J
A
B
C
D
E
5.27V
5.35V
4.2V
Recorder Board
TAPE_L
DBB
LOGIC TABLE
CD
TU_EN / MPX
TU_DATA
TU_CLK
/STEREO
TU_EN / MPX
TU_DATA
TU_CLK
/STEREO
+RDS
BACKLIGHT
MTF / ETF
12
13
14
15
16
17
1
2
3
4
0.2V
0.2V
V
Source Selection / Sound Control part
DBB
POP
/PWRDWN
+A
+SERVO
from
Supply Part
from 7552
SOURCE SELECTOR
CD on = Low
to Source Sel.
7554
DSC
Sound features
Control lines
off
(flat)
Rock
3.55V
3.55V
3.55V
3.55V
3.55V
0V
3.4V
0V
4.9V
2.8V
2.2V
4.9V
4.65V
to/from
to/from
CD Board
to/from Front Board
BKLT_ON
TAPE_R
GND
REC_L
REC_R
to
Recorder Board
T
uner Board
Logic Table
to 7500 pin 14
from
3585, 3586
to
Amplifier Part
to
TUNER_L
0
1
0
0
1
0
0
1
GND
LEFT
GND
+Motor
PWM
D_GND
+5V6
A1
A0
TAPE
AUX
TUNER
CD
0
0
0
1
1
1
0
1
ELECTRONIC VOLUME CONTRO L
D
IGITAL SOUND CONTROL (DSC )
Jazz
Pop
off
off
off
off
on
on
on
CD_R
TUNER_R
AUX_R
to/from
AUX
from 1556
to 1551 or 1552
2.08/2.1V
0/2.64V
V
V
V
0V
3.75V
0V
3.75V
0.57V
4.1V
-0.3/0.56V
TAPE_L
CD_L
AUX_L
TAPE_R
Amplifier Part
Amplifier Part
from
Amplifier Part
from
uP Port Extension
to 6500
VCC
RIGHT
AU_STR
AU_DATA
AU_CLK
MUTE
/BKLT
Source Selection
Source
0V
2.05V
1.1V
2.13V
1.1V
2.13V
0/5.5V
5.7V
5.5V
0/5.5V
0/5.5V
0/5.5V
0/5.5V
0/2.65V
0/2.65V
0/2.1V
0/2.1V
2/2.36V
0/2.9V
-0.3/0.56V
2/2.36V
0/2.9V
0/2.65V
0/2.65V
0/2.1V
0/2.1V
0V
0.2V
0V
0.2V
2.08/2.1V
0/2.64V
4.35V
0.54V
5.5V
5.7V
0V
5.5V
0V
0V
0V
3.6V
0V
3.6V
0V
3.6V
0V
3.6V
0V
3.6V
0V
3.6V
0.57V
4.2V
1V
2.05V
1V
2.05V
0V
2.05V
0V
2.05V
0V
2.05V
0V
0V
0V
0V
0V
0V
0.5V 3.4V
3.3V
0V
0V
4.9V
0V
2.8V
0V
2.2V
5V
0.55V
5.5V
5.7V
0V
0V
5.5V
5.7V
4.35V
0.54V
3545
8K2
CD_+5
+CD_MTF_MOTOR
2559
220p 220p
2560
220p
2558
+12V
-8V2
7
7550
BC817-25
7500-F
HEF4069UBP
13
12
14
1n5
2521
1n5
2522
27K
3531
27K
3532
27K
3529
27K
3530
220K
3528
220K
3526
220K
3527
220K
3525
15R
3508
BZX79-C2V7
6550
47n
2533
100n
2531
47n
2534
3548
150K
150K
3547
100n
2529
2530
100n
33K
3516
33K
3524
33K
3533
33K
3523
33K
3534
2525
47p
47p
2526
100K
3535
100n
2532
100K
3536
10n
2515
15K
3514
15K
3513
100K
3518
33K
3521
100K
3517
3522
33K
3519
220K
220K
3520
680p
2523
8K2
3546
470n
2563
3544
82K
10n
2527
82K
3543
10n
2528
BC847B
7511
7513
BC847B
BC847B
7509
7507
BC847B
BC847B
7505
680p
2524
BC847B
7510
7508
BC847B
BC847B
7514
BC847B
7512
3540
22K
22K
3539
220K
3537
3538
220K
10u
2502
220u
2501
100p
2506
100p
2508
100p
2507
100p
2505
33K
3506
33K
3505
33K
3510
33K
3509
15R
3507
7503
7504
ON4986
ON4986
7502
ON4986
ON4986
7501
22n
2503
220p
2520
14
7
33K
3515
HEF4069UBP
7500-A
1
2
3512
100K
100K
3511
47p
2514
220n
2511
47p
2513
220n
2512
1n5
2518
2517
1n5
10n
2516
BC847B
7556
BC847B
7555
100p
2565
100p
2566
2u2
2568
1u
2570
2u2
2567
1u
2569
22u
2561
470n
2564
470R
3578
3575
470R
3577
15K
3576
15K
150K
3579
150K
3580
2K7
3582
2K2
3586
2K7
3581
4K7
3584
4K7
3583
BC847B
7506
3K9
3588
100u
2500
3K9
3587
2K2
3502
6500
1N4148
470R
3503
+5V6
470R
3501
2u2
2555
16
2
3
4
5
6
7
8
9
FE-BT-VK-N
1556
1
10
11
12
13
14
15
FE-BT-VK-N
1554
1
2
3
4
5
6
EH-B
1553
1
2
T581
2n2
2n2
2552
22n
2553
2551
1
2
4
3
2550
22n
2519
1550
220p
+VS
+VS
+VS
T558
T557
T555
T554
T556
T552
T553
T551
100R
3563
2571
470n
47K
3574
+5V6
BC327-40
7553
Vc
Vc
Vc
Vc
Vc
Vc
T569
2K2
3585
T568
T566
T567
T564
T565
T563
T561
T562
3589
220R
T559
10K
3572
+5V6
1K
3573
1K5
3568
220u
2554
T585
T579
T580
T578
T576
T577
T574
T575
T572
T573
T571
7
8
1555
FE-BT-VK-N
1
2
3
4
5
6
470n
5550
+12V_AF
470n
5551
-CMOS
1
2
3
4
5
6
7
+12V
+12V
FE-BT-VK-N
1551
T550
2573
100n
T503
T504
T500
T501
T596
T595
T594
T592
T593
HEF4069UBP
7500-E
11
10
14
7
7
7500-D
HEF4069UBP
9
8
14
7
5
6
14
7
HEF4069UBP
7500-B
3
4
14
9
10
1
16
8
7500-C
HEF4069UBP
7552
HEF4094BP
3
2
15
4
5
6
7
14
13
12
11
+5V6_S
9553
9
16
VDD
7
VEE
8
VSS
T570
1
10
11
12
13
14
15
4
5
6
820R
3500
HEF4052BP
7551
22p
2509
22p
2510
9555
(forseen only)
470n
2557
9554
(forseen only)
3558
18K
6K8
3556
3555
6K8
9551
+12V_AF
33K
3551
3552
33K
8K2
3553
2535
100n
3542
150K
8K2
3554
15R
3565
150K
3541
3561
10K
3566
15R
3560
2K7
10K
3562
T591
2K7
3559
T590
T588
T589
T586
T587
T584
T583
18K
3557
+VS
+5V6_S
+12V
+VS
T582
PWRDWN
DBB
JAZZ
POP
DBB
POP
JAZZ
BASS
BASS
A0
A1
REC_R
REC_L
Vc
PWM
L
BASS_ALC
R
BASS_ALC
INCR
REC_R
REC_L
CD_+5
PWM
JAZZ
POP
INCR
BASS
A1
A0
MUTE
DBB
STANDBY
CIRCUIT DIAGRAM - COMBI BOARD (Part 1)
Summary of Contents for MC-M250
Page 13: ...6 1 6 1 CIRCUIT DIAGRAM LED BOARD LAYOUT DIAGRAM LED BOARD ...
Page 15: ...7 2 7 2 LAYOUT DIAGRAM FRONT BOARD ...
Page 16: ...7 3 7 3 LAYOUT DIAGRAM FRONT BOARD ...
Page 29: ...11 4 11 4 LAYOUT DIAGRAM COMBI BOARD ...
Page 30: ...11 5 11 5 3583 LAYOUT DIAGRAM COMBI BOARD ...
Page 34: ...COMBI BOARD LAYOUT DIAGRAM For production after week 0303 11 9 11 9 ...
Page 35: ...11 10 11 10 COMBI BOARD LAYOUT DIAGRAM For production after week 0303 ...