Servo Control Circuit - Philips FW-C355 Service Manual

SERVO CONTROL CIRCUIT

1702 A7 1760 B8 2622 D2 2625 E4 3601 B2
1703 B1 1770 B7 2623 D2 2626 B1 3602 C2
1706 E1 2621 D2 2624 E2 2627 A7 3603 B2
1 2
A
SOL_A
PHOTO_A
CR02_A
L
+MOTOR
B
2
3613
1
27K
1703
M
M
P
C
7623
BC847B
D
* 3687
220R
4785
*
STROBE 7
DATA 6
CLK 5
2624
*
GND_P
4
M
P
100n
+5
3
E
AD1
2
AD2
1
1706
TO/FROM FRONT
1 2
9-8
3604 C2 3607 C6 3610 D6 3613 B2 3618 A4
3605 B3 3608 D6 3611 C6 3614 C6 3619 A4
3606 C3 3609 C6 3612 D6 3616 A5 3620 A4
3 4
*
+MOTOR
7613
10K
PMBT2907 *
7616
BC857B
M 3625
1K
+5
7619
BC847B
*
+5
M
Rec_RVS
CRA
8
VSS
10
Os'
9
Os
3685
1
STR
100K
7610
HEF4094BT
2
P D
3
CP
VDD
16
2625
P
100n
+5
+5
4795
3689
4K7
3 4
3622 A4 3625 B3 3630 A6 3676 C5 3680 C5 3687 D2
3623 B3 3626 B6 3672 B4 3678 B5 3685 D2 3688 A5
3624 B6 3628 A5 3674 B5 3679 B3 3686 E6 3689 E3
5 6
+MOTOR
7612
PMBT2907
*
10K
L
3630
*
*
470R
+MOTOR
7614
PMBT2907
3674
4K7
7618
HS
BC847B
3672
*
3626
4K7 M
7622
*
1K
BC847B
7620
BC847B
M
M
*
+5
P
--
7
O3
11
O7
2A2 CRB
13
O5
12
O6
14
O4
4
O0
REC
5
1A0
O1
6
O2
E0
15
2A1
5 6
9-8
4785 D2 6612 B6 7612 A6 7616 A4 7620 B6
4795 E3 6614 B4 7613 A3 7618 B6 7622 B5
6611 A2 7610 D4 7614 A6 7619 B4 7623 D2
7 8
DECK AB
SERVO CONTROL
H
14
CR02_A
13
L
12
mode_A
11
1702
PHOTO_A
10
SOL_A
9
9705 Gnd
8 8
M mode_B
7 7
Vcc
6 6
sol_B
5 5
photo_B
4 4
Rec_FWD
3 3
CrO2_B
M
2 2
Rec_RVS
+5
1 1
Rec_RVS
1770 # 1760
7624
BC847B
* See Variant Table for details
# For Provision Only
L Not For ND/DD/FR
Note : Some values may varies, see respective parts list for
correct value.
7 8
7624 D6
9705 A7
9
CCTRY
A
B
C
D
E
9