Servo Control Circuit - Philips MC-50/22 Service Manual

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SERVO CONTROL CIRCUIT

1703 B1 1770 B7 2623 D2 3601 B2
1706 E1 2621 D2 2624 E2 3602 C2
1760 B8 2622 D2 2625 E4 3603 B2
1
A
M
SOL_A
PHOTO_A
CR02_A
+MOTOR
2
B
1
M
1703
M
P
C
7623
BC847B
D
3687
100R
4785
STROBE
7
DATA 6
CLK 5
2624
GND_P
4
P
100n
+5
3
E
AD1
2
AD2 1
1706
TO/FROM FRONT
1
9-7
3604 C2 3607 C6 3610 D6 3613 B2 3618 A4 3623 A3
3605 B3 3608 D6 3611 C6 3614 B6 3620 A4 3624 B6
3606 C3 3609 C6 3612 D6 3616 A5 3622 A4 3625 B3
2 3
+MOTOR
L
7613
BC807-25
L
L
L
L
M 3625
1K
+5 L
7619
BC847B
3613
+5
27K M
L
Rec_RVS
CRA
10
Os'
9
Os
3685
1
STR
100K
2
P D
#
3
CP
2625
M
P
100n
+5
** Items used for pcb testing only
4795
3689
1.
4K7
2.
3.
2 3
3626 B6 3672 B4 3678 B5 3685 C2 3688 A5
3628 A5 3674 A5 3679 B3 3686 E6 3689 E3
3630 A6 3676 B5 3680 B5 3687 D2 4781 A5
4 5 6
+MOTOR
7612
BC807-25
L
L
3630
L
7616 L
470R
+MOTOR
BC857B
3674
4K7
7618
HS
BC847B
L
3672
L
3626
4K7 M
7622
BC847B
7620
BC847B
M
M
+5
P
8
VSS
--
7
O3
CRB
11
O7
2A2
13
O5
7610
HEF4094BT 12
O6
14
O4
4
O0
REC
5
1A0
O1
6
O2
VDD E0
16 15
2A1
+5
Version 3689 4795
ND / DD / FR - -
ND / DD / FF - use
ND / SD -
use
4 5 6
9-7
4784 A1 6611 A2 7610 D4 7614 A6 7619 B4 7623 C2
4785 D2 6612 B6 7612 A6 7616 A4 7620 B6 7624 D6
4795 E3 6614 B4 7613 A3 7618 B6 7622 B5
7 8
DECK AB
PHOTO_A
13
SOL_A
12
CR02_A
11
H
10 SINGLE
L
DECK
9
M
Gnd
8
mode_B
7
Vcc
7614
BC807-25 6
sol_B
5
photo_B
4
CrO2_B
3
Rec_FWD
M
2
Rec_RVS
+5
1
1K
Rec_RVS
1770 1760
7624
BC847B
* See Variant Table for details
# For Provision Only
L Not For Single Deck Variant
3139 118 51470 sh 130-1 dd wk050
7 8
It`s Free
9
SERVO CONTROL
CCTRY
A
8
7
6
5
4
3
2
B
1
C
D
E
9