Circuit Diagram Servo Part - Grundig CDP75 Bedienungsanleitung

Schaltpläne und Druckplattenabbildungen / Circuit Diagrams and Layout of PCBs
Schaltbild Servo-Teil

Circuit Diagram Servo Part

1 2 3 4
SERVO PART
A
CDM12.3BL
DISC DRIVE
2902
L
Photodiode-array
10n
3903
1%
D1 D2
L
110k
R1 R2
B D3
1800
10FM1.0BT
Laser
1 T801
+3.5
12
Monitor
2 T802
Vref
3 T803
+REF
C
4 T804
+
+Vreverse
T805
5
R2
6 T806
BC848
D1 7901
3901
7 T807
D
12k%
D2
8 T808
L DA L
R1
T809
9
D3
T810
10 L
E L
F
Supply voltages E planation of abbreviations:
+A .....battery or ext. DC
+S .....switched +A
+uP ....3.5V (switched by low supply voltage
shut-off circuit)
G
+3.5 ...stabilized voltage of DC/DC converter % ......Tolerance of resistor is only 2%
+1.2 ...Referenze-voltage (only if power on)
+6 .....ext. DC
H
DC VOLTAGES MEASURED IN
V
EVM PLAY MODE-1kHz 0db LEVEL
(SUPPLIED BY MAINS ADAPTOR)
I
6.3V
+A
J
K
+3.5V
DC/DC Converter
L
+3.5
T899
M
N
Supply: +3,5
1 2 3 4
2 - 3
CDP 75 / CDP 110
5 6 7 8 9
+3.5
7800 TDA1302
eye-pattern
HF Amplifier
13 12
C LS
1,8V 3,6V
Adj
1
14 11
HG
1,3V L
Vg
15 Vrf 10
L
1
16 Lo Vrfe 9
2V 1V
+L H = Laser on
17 Mi Vddl 8 3,2V
2,9V
Vdd
18 LDon 7
3,6V 3,6V
19 I2 O2 6
L
L
20 I5 O5 5
R2 0V
3807
21 I1 O1 4
D1 0V 10k
3808
10k
I3
D2 22 O3 3
0V
23 I6 O6 2
R1
0V
24 I4 O4 1
D3
0V
DA DA DA
+3.5
T866
Track-
44
7950
MPC1715FB
Vc
Hin1
1
Track+ 2 Hout1A
3952
2952
39R
2u2
DCout1
5950 3
CL
100u
4
6,3V
Vin
2953
5951 5 DCout2 Vc
1,2V
100u
2u2
6
Gnd1,2
Focus+
7 Hout2A
8 Hin2
1,2V
Focus- 9 Hout2B
SD
CL
2925
10 Vout
CL
6.3V 1n
11
COMP
3925
7922
1k
BC807-40
11
6.0V
Deadtime-
control
5920
3.8V
100u
11
12
1us/div
0,7V
3926
1M
3927
2927
470
1n
5 6 7 8 9
GRUNDIG Service
Schaltpläne und Druckplattenabbildungen / Circuit Diagrams and Layout of PCBs
10 11 12 13 14
+3.5
3,6V
> 800 mVpp
7801 TDA1301T
1 Reset
uPROCESSOR
T891 CONTROL
2 Laser
3.6V INTERFACE
TB=0,5 us/DIV
On/Off
3
4
2V
Vref
GEN.
3803
D1
DA 5
0V
10k
3804
6 D2
0V
10k
3805
7 D3
0V
10k
Vref
8
DA
3806 D4
9
0V
10k
10 R1
0V
11 R2
0V
3809
12
3,6V
+3.5
4R7
XTAL
VDD DIVIDER
13
0,4V OSCILLATOR
14
DIGITAL
2811
SERVOPROCESSOR
47n
DA DA DA DA DA
DA HF
T860
T859 T867
+3.5
1,8V
3,6V
2,9V 3953
7951
47k
BC858
3,5V
Sldm+
3,5V
2V
43 42 41 40 39 38 37 36 35 34
Lim1,3 VLG Vc
VLG Lim1,3
4-STAGE
Hin3
H-Bridge- 33
0,5V
PWM-SERVODRIVER
motor-
driver 3
H-Bridge-
motor-
32 Sldm-
driver 1
Hout3A
VG Vin CL saw
H-Bridge motor driver 4
2949
VLG Lim2,4 CL Vin DCout3 31 5953
Vc saw 0,5V
VG
Vin VG
saw 100u
6,3V 4u7
30
+A
Abs.- Vin
Pre-
PWM 2954
VLG Lim2,4 DCout4 29 5952
driver 0,5V
100u
4u7
Amp. 28
Gnd3,4
VG
Hout4A
H-Bridge- 27 DMot+
motor-
Hin4 26
driver 2 Pre- 0,5V
driver
Hout4B 25
DMot-
Vin
saw Vin VG
Power POWER CONTROL 24
0V 0V
saw switch
7450
BC848
CL
saw Sawtooth
Sync 23
Vin 0,6V
Oscillator
Clock
Oscillator
REG. Charge-
pump
FOR_CPU
driver
+uP
VREF
VG
Cg Vreg Cosc
13 14 15 16 17 18 19 20 21 22
0,7V 0,7V 0,7V 6,3V 1,3V 12V 3,4V 3,8V 0,7V
6951
+A
T836
+1.2 BAT54S
+S
Supply: +S, +1,2
10 11 12 13 14
2 - 4
15 16 17 18 19
HF
+3.5
+3.5
3,6V
VDD
28
3,6V
3823
T893
SIDA 27
100
SICL 26
SILD 25
3813 3814
PDM 5 2k2 2k2
Slide 24
23
Focus
6
T868
22
Track
3815 3816 +uP
+3.5
21
330 470
+A
20
3,6V
+3.5
VDD
19
16,9 MHz
+1.2
3826
18
3817 3818
1M
+S
2k2 2k2
17
7
T869
16
T892
0V 3825
15
10k
2826
T871
100p
3.5V
6
7
Track_in
Focus_in
Slide_in
3.5V
5
3.5V
3.5V
+3.5
+L
+3.5
HF SD
3965 3966
1k 330
SD
T811
Innersw
T812
DMot+ T813
DMot- T814
Sldm- T815
10
Sldm+
T816
During focus search
Track-
T817
8
+ 2V
- Focus+ T818
1s
9 8
Focus- T819
Track+ T820
15 16 17 18 19
CDP 75 / CDP 110
20 21
1800 B 2
1950 N20
2800 D 3
2801 E 9
2802 E 9
2803 E10
A
2804 E10
2805 E10
2806 E11
2807 E11
2808 E11
2809 E12
2810 E13
2811 E12
FROM/TO SIGNAL
HF 2812 D16
2813 C17
PROCESSING PART
2814 C18
CLK16
B 2815 D17
2816 D18
SDA
2817 D17
2818 D18
SCL
2820 B13
2821 C13
SLD
2823 B18
2824 B18
PoRes
2826 E17
2901 D 3
PCon
2902 A 4
FROM/TO SUPPLY
C 2920 J 4
Vreg
2921 J 5
CONTROL PART
2922 M 5
+uP 2923 M 5
2925 K 7
2927 M 9
+A
2935 K 8
2949 J14
+3
2950 G 9
2951 H 8
+1
2952 I 8
D
2953 J 8
+S
2954 J14
2956 J 8
GND
2957 M11
2958 M12
2959 N11
2960 M12
2961 M13
2963 N10
2965 I16
E 2966 J17
3450 L14
3800 C 3
3803 C11
3804 C11
3805 C10
3806 D10
TB 0.5us/DIV 3807 D10
3808 D 9
3809 D12
3811 E13
F
3813 C17
3814 C18
slide not moving
3815 C17
3816 C18
3817 D17
TB 0.5us/DIV
3818 D18
slide out
3819 B16
3820 B17
3821 B17
3822 A 8
3823 B16
G
slide in 3824 A12
3825 E16
3826 D16
3829 I16
3900 C 4
3901 D 5
3902 D 4
3903 B 4
3922 M 4
3923 M 4
H 3925 L 7
3926 M 9
3927 M10
+L
3933 M 4
3950 G 8
+3
3951 G 8
3952 I 9
GNDHF 3953 G13
3965 I17
3966 I17
GNDSD FROM/TO SIGNAL
5920 L 5
I
5950 J 9
PROCESSING PART
5951 J 9
5952 J14
5953 J14
6920 M 6
DMot1
6951 N12
7450 L14
Innersw
7800 E 7
7801 B13
7901 D 4
7922 L 6
J
7950 H 9
7951 G13
T801 B 2
T802 C 2
T803 C 2
T804 C 2
T805 C 2
T806 D 2
T807 D 2
T808 D 2
CDM12.3BL
K T809 D 2
DISC DRIVE T810 E 2
T811 K20
T812 L20
1
T813 L20
Inner-
T814 L20
switch
2 T815 L20
T816 M20
T817 M20
3
T818 M20
Disc- T819 M20
L
motor T820 N20
4
T836 N11
T859 G10
T860 G13
5
T866 G 9
Slide-
T867 G11
motor
6 T868 C16
T869 D15
T871 E15
7
T891 B13
T892 D15
M
8 T893 B17
T899 L 4
Focus
9
Track
10
1950
10FM1.0BT
N
20 21
GRUNDIG Service