Philips MC-70 Service manual

Service
Service

MC-70

A02 - 155

Service

Product Service Group CE Audio

Service Information

Already published Service Informations: A01-165 3139 785 30024

CHANGES DURING PRODUCTION

FRONT CONTROL BOARD

* From production wk204 onwards the following changes

are made to improve brightness & reliability of the Blue

LED.

3601 change to 33R 5% 0,062W 4822 051 30339

3602 change to 33R 5% 0,062W 4822 051 30339

ETF TAPE MODULE

* From production wk209 onwards a new ETF8 SD Tape

Module was introduced replacing the existing ETF6-LE

Tape Module. Due to this change the undermentioned

changes needs to be implemented together:

On the Front Board

7102 is change to 9965 000 11077 TMP88PU74YF.

This is the OTP version of new IC which can be recog-

nized by the "MC50S52881" printed on the body of the IC.

3DTC MODULE

* From production wk205 onwards a new pc board pt. 5 is

introduced due to the addition of a HF detection circuitry

for other set application. Because the existing module

has dedicated circuit diagram for this set, no changes is

required on the circuit. Enclosed is the new pt.5 layout.

REGULATOR BOARD

* From production wk212 onwards a new pc board pt. 4 to

improve MW/LW sensitivity & noise for other application

sharing the pc board. Added on the board are compo-

nents 2417 and 2420.

The silkscreen printing on the pc board is later changed

to pt. 5 to correct item 3433 & 3434 interchange error.

The new pt.5 layout & circuitry is enclosed for reference.

On the Center Unit (Refer to Set Exploded view)

Pos 198 is change to 3139 114 73930 Door Cassette

A new Chapter of the ETF8 Tape Module is enclosed. It

can be recognized by the the printing mark

3139_113_34552_01 on the pc board.

3139 785 300622002 - 04 - 26

REGULATOR BOARD

REGULATOR CIRCUIT

A

B

C

D

E

F

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+12V_M

3419

3411

470R

t

47u

FOR CDR ONLY

10.35V

3420

2322640

2406

5V_VCD

11.3V

330R

6406

BZX79-C3V9

1K

100u

VCD_GND

3421

7409

BC327-25

6.34V

2407

5R6

11V

100u

1400

1

2

EH-B

For Fan

EH-B

1401

1

2

3

4

5

6

7

8

9

10

11

TO COMBI

TO CDR MODULE

6

5

4

3

2

1

EH-B
1403

3

1

3439

7419

BC547B

GND_M

EH-B

1402

1

2

3

4

5

6

7

8

9

#

9406

2

7420

STP16NE06

1K

3438

10K

3440

5V_VCD

14.5V

GND_M

VCD_GND

5V_VCD

+12V_M

3436

10K

100K

7421

BC547B

+12V_A

LPC

+12V_M

+A

+A/2

+5V6

VCD_ON

T1A

1171

GND_A

5V6_GND

VCD_GND

T2A5 for CDR

*

~

+A

3437

100K

9172

9174

3423

22K

3424

470K

BC547B

VCD_ON

CDR ONLY

VCD_ON

7413

BDW94C

3425

7414

23

1

2K2

5.7V

2411

5V6_GND

3422

~

2412

10K

3426

47u

9404

100K

1u

+5V6

7415

BC547B

LPC

5V

2413

29V

7401
BC547B

10u

*

5V6_GND

27.3V

6407

3427

3428

+A

1K

3405

3403

4.2V

2K2

3404

6400

1N4148

6401

1N4148

GND_A

9405

~

BZX55-B4V7

100R

150R

270R

27.9V

7402

BC557B

14.1V

2409

7403
BDX53BFI

12.4V

2400

2u2

3406

1K

2403

7417

1

IN OUT

GND

L7805

10u

6409

2410

100n

For NON CDR

11.3V

FOR NON-LPS VERSION ONLY

15K

3407

6402

BZX79-C15

0.65V

4u7

2

2404

3

0.7V

1N4148

3409

100n

5.7V

5V6_GND

3K3

2408

1.4V

+5V6

+A

3410

100n

9401

3412

7407
BC547B

10K

7406
BC547B

3430

2420

1K

3413

6404

10K

BC547B

10u

BD438

1K

1N4148

7411

7405

GND_M

1K

3414

9.91V

7408

BC547B

7410

BD438

3431

3432

180R

180R

2417

1n

7412

BC547B

VCD_GND

PROVISION

#

FOR CDR ONLY

*

FOR NON-CDR ONLY

~

+12V_A

2402

GND_A

3415

68R

1N4148

3433

47u

6412

10K

6405

3416

3417

6413

3434

3435

BZX79-B10

10u

2405

120R

120R

BZX79-B3V9

2415

120R

120R

3418

2416

10u

A

B

C

D

E

F

1171 C2
1400 B9
1401 A1
1402 A1
1403 E1
2400 B5
2402 A7
2403 C5
2404 C5
2405 B7
2406 B8
2407 B8
2408 D5
2409 E4
2410 E5
2411 C3
2412 F3
2413 E3
2415 E7
2416 D8
2417 D6
2420 E6
3403 A4
3404 B4
3405 A4
3406 B5
3407 B5
3409 C5
3410 B6
3411 B8
3412 B6
3413 B6
3414 B6
3415 B7
3416 B7
3417 C7
3418 B8
3419 A8
3420 B8
3421 A8
3422 D3
3423 D2
3424 E2
3425 E3
3426 E3
3427 E4
3428 F4
3430 D6
3431 D6
3432 D6
3433 D7
3434 E7
3435 E7
3436 E2
3437 F2
3438 F1
3439 F1
3440 F1
6400 B4
6401 C4
6402 B5
6404 C6
6405 B7
6406 B8
6407 E4
6409 E5
6412 D7
6413 D7
7401 B4
7402 B4
7403 A4
7405 A6
7406 C6
7407 B6
7408 B7
7409 B9

7410 D7
7411 E6
7412 E7
7413 D3
7414 F3
7415 F3
7417 D5
7419 F1
7420 E1
7421 F2
9172 D2
9174 D2
9401 A6
9404 D3
9405 D4
9406 E1

123456789

3DTC MAIN BOARD LAYOUTS

Mainboard Componentside view

This assembly drawing shows a summary of all possible versions.
For components used in a specific version see schematic diagram respectively partslist.

3DTC, Mainboard Layout stage .5 2001-10-23

1234567

G

F

E

D

C

B

A

1234567

G

F

E

D

C

B

A

Mainboard Copperside view

This assembly drawing shows a summary of all possible versions.
For components used in a specific version see schematic diagram respectively partslist.

3DTC, Mainboard Layout stage .5 2001-10-23

1800 D1
1801 A4
1802 C4
1803 G5
1804 G2
1805 G3
1806 C7
2701 G4
2706 E2

2818 C5
2830 C2
2839 C3
2843 C2
2845 C4
2847 C3
2851 E2
2858 E3
2860 E4

2863 A6
2864 A7
2866 C6
2868 C5
2886 B5
2891 B6
3779 G4
3862 D2
3873 E1

3887 A5
3888 A5
3899 G1
5800 G5
7802 E2
7803 A6
7815 G3
9801 F6
9802 G5

9804 A2
9805 G7
9806 C3
9807 F5
9808 C7
9809 B7
9821 E1
9822 E1
9823 C1

9824 C1
9825 C1
9826 B3
9827 E1
9828 F1
9829 F1
9830 F2
9831 F2
9832 G3

9833 G2
9834 B1
9836 C1
9837 C1
9838 D3
9839 E7
9840 F6
9841 F6
9842 B4

9843 B3
9844 B2
9845 C3
9847 D3
9848 E3
9849 E3
9850 F4
9851 F3
9852 G4

9854 G5
9855 B4
9856 D2
9857 D2
9858 D3
9859 F4
9860 F4
9862 D6
9863 C7

9864 C7
9865 C7
9866 E7
9869 D7
9870 B7
9871 B7
9872 D7
9873 F5
9874 F6

9875 F6
9876 G6
9877 D7
9878 E7
9879 E7
9880 E7
9882 D5
9883 D5
9884 F6

9885 E7
9886 D7
9887 D7
9888 D2
9889 C5
9890 B4
9891 G7
9892 F7
9893 F7

9894 C4
9895 C5
9896 C1
9897 D6
9898 D6
C800 A1

2700 B3
2703 B3
2704 B2
2705 F2
2707 F3
2710 F3
2711 F2
2712 B3
2713 F3
2810 E4
2811 F1
2812 F4
2813 E4
2814 F1
2815 F1

2816 F4
2817 E5
2819 E4
2820 E4
2821 F2
2822 F4
2828 F2
2829 F3
2831 D5
2832 E2
2833 D5
2834 D1
2836 E2
2842 E4
2844 D3

2846 C2
2848 C3
2849 D3
2850 E3
2852 C4
2853 D3
2854 D3
2855 C2
2856 C3
2859 D3
2861 G7
2862 C3
2865 C3
2867 E5
2869 E5

2878 B5
2879 A4
2880 A5
2881 A5
2882 B5
2885 F6
2887 F6
2888 F5
2889 E6
2890 E5
2892 E5
2893 E7
2894 E5
2895 E5
3700 G2

3701 F2
3702 E6
3703 E6
3713 F3
3715 C6
3716 C6
3717 D6
3718 B6
3719 E5
3720 E5
3722 F2
3723 A6
3724 A6
3725 B6
3726 D6

3727 D6
3728 D5
3729 D6
3730 F2
3731 G3
3733 B7
3735 B7
3736 C6
3737 B5
3738 C5
3740 C5
3741 C5
3742 C5
3743 C4
3744 A5

3745 C5
3746 C5
3747 C5
3748 C5
3750 C5
3751 C5
3752 C4
3753 A6
3754 B6
3755 F6
3756 F6
3757 F6
3758 E5
3759 E5
3760 F6

3761 F5
3762 F6
3763 F5
3764 E6
3765 E5
3766 F3
3768 F3
3770 F3
3771 B3
3772 B2
3773 A4
3774 B3
3775 B3
3776 A3
3777 A3

3778 B3
3780 B1
3781 B3
3782 B3
3783 A7
3784 B2
3785 G2
3786 B1
3787 B3
3788 B2
3789 B2
3790 B3
3791 B3
3793 F3
3794 F2

3795 F2
3796 F3
3797 G2
3805 F4
3806 F4
3807 F1
3808 F4
3809 F1
3810 F4
3811 D2
3812 D2
3813 F4
3814 E5
3816 E5
3817 F1

3818 F4
3820 F2
3821 F4
3829 D2
3830 E2
3831 F2
3833 F4
3835 F2
3836 F1
3840 D6
3841 C4
3844 D5
3845 C5
3846 C1
3847 C6

3848 C6
3849 C6
3850 D6
3851 F1
3852 D6
3853 F2
3854 B6
3855 F2
3856 F2
3857 D6
3858 D6
3859 E2
3860 D6
3861 E2
3863 E4

3864 E3
3865 C6
3866 D4
3867 E3
3868 E3
3869 C3
3870 C4
3871 C2
3872 C4
3874 D3
3875 E3
3876 C3
3877 C3
3878 C4
3879 C2

3880 D3
3881 D3
3882 D3
3883 C3
3884 G7
3885 C3
3886 C4
3889 C3
3890 G6
3891 C3
3892 F7
3893 E3
3897 F3
6801 B7
6802 C5

6804 A2
6805 A2
6806 A2
6807 B1
6808 A1
6809 A1
6810 A1
6811 C2
6812 C1
6813 G3
6814 G3
7800 D4
7801 E2
7804 D3
7806 D2

7811 B7
7812 C5
7813 A2
7814 B2
7816 E5
7817 F2
7818 F2
7819 G2
7820 F3