Philips MC-50/22 - Page 69

10-1310-13
+
-
VDD
2x
4x
1x
V/I
V/I
Vgap
D3 (CD10)
D4 (CD10)
SLIDE
R2 (CD10)
3DTC-mainboard
DISC
_
D5
+
D2
D3
D4
D3
D2
D4
HF-Amplifier & Laser power control
ESD sensitive line!
ESD sensitive line!
TRACK
FOCUS
+
+
_
D5
to 7800/pin63
T+
F+
INNERSW.
FOCUS
D1 (CD10)
+
FOCUS
+
CD Drive
+
VCC
D3
_
D4
D2
LD
GND
TRACK
R1 (CD10)
D3
Motor Driver
MON
D2 (CD10)
D5
GND
D4
TRACK
part 1
DISC
_
_
VREF
F-
SLIDE
Servo Driver
T-
_
D1
D1
180p
D1
DISC
D2
SLIDE
VAM2201
2821
3836
4K7
3835
4K7
3851
2K7
220p
2816
TDA7073A7802
2R2
3887
2843
4u7
1K3855
2865
47n
2856 270p
4K7
3890
+5V
220p 2813
2863
47u
220p
2810
3891
10n
2862
100K
10K
3808
+5V
3879
6K8
10K
4K7
3833
3871
4K7
3884
2839
4u7
10K
3818
27K
3817
3877
33K
10K
3810
10K
3813
3809
22K
3807
22K
2822
220p
3846
4K7
PDZ-3.3B
6812
2834
47n
2836
4n7
3821
10K
0u47 2864
3885
100K
47K
3878
100n
2861
180p
2815
3820
56K
56K
3831
2832
1n5
2855
2n2
2846
68R
3829
4R7
3862
220p
2812
180p
2828
100R
3864
3870
470p
47K
LD1
MON4
PWRON
LDON
from part2 7800/pin64
7
10
RFEQO
RFFB
9
RGADJ
14
VCC2 13
VCCL2
2814
TZA1024/TZA10257801
CDRW 11
CFIL3
CMFB
8
DIN5
EQSEL 12
GND
6
2811
330p
3859
+10V
4R7
12
1
2
5
3,4,8
7803 TDA7073A
14,15
10,11
6
7
16
13
9
3892
82K
10
11
12
13
14
15
2
3
4
5
6
7
8
9
+3.3V
FO
1800
FMZ-ST
1
4u7
2830
2829
220p
10n
2859
270p
2848
3861
15K
3856
10K
3882
100K
3869
33K
2R2
3888
RA
M2
M1
SL
2R2
3873
2851
47u
+10V
2R2
3899
68R
3830
PH-S
1801
6
5
4
3
2
1
EQSEL
from part3 7814/pin11
RW/DA
from part2 7800/pin61
Innersw
VrefCD10
Vref
Vref
Vref
+
-
+
-
VDD
12
1
2
5
3,4,8
14,15
10,11
6
7
16
13
9
+
-
TO SERVOPOCESSOR
7800 on PART2
FROM SIGNALPOCESSOR
7800 on PART2
Σ (D2-D4) = Audio signal
VrefCD10
7806
BC847B
3811
82K
3812
10K
5V
1.9V
1.6V
4.7V
5V
4.7V
5V
1.6V
1.6V
1.6V
1.6V
10V
10V
0.3V
5.1V
0.3V
4.9V
4.6V
1.6V
1.6V
4.8V
1V
0V
0.8V
4.7V
0.2V
0.9V
1.6V
1.7V
2.9V
2.1V
3.0V
U >400mV
->Laser damaged !
Focus search
Service step 2
2V
+
-
1s
3V
0V
0V
A
B
3V
0V
3V
0V
CD_RW = 3V / CD_DA = 0V
3DTC Mainboard Sheet1 2001-02-01 (non CDR Version)
TB = 0.5µs/div
800mVpp
EYE-PATTERN
to 7800 on part 2
HF
12345678910
78910
A
B
C
D
E E
F
G
H
II
123456
F
G
H
A
B
C
D
. . . V DC voltages measured in
PLAY MODE
with following conditions:
"+10V" = 10V
"+5V" = 5V
EVM
V
3872
1K
3876
1K
2852
47n
Vref
+3servo
2860
47u
+3,3V
+5V
+3,3V
+5V
+10V +10V
33R
3886
from part 2
5V
5V
10V
10V
VrefCD10 VrefCD10
1.6V
1.6V
3,3V
3,3V
3,2V
1,6V
1800 C1
1801 I1
2810 A5
2811 A4
2812 A4
2813 A5
2814 B4
2815 A4
2816 B5
2821 B4
2822 B5
2828 C4
2829 C5
2830 C2
2832 D5
2834 E4
2836 D6
2839 E8
2843 E5
2846 F4
2848 F5
2851 F4
2852 B8
2855 G4
2856 G5
2859 H5
2860 B9
2861 H4
2862 H5
2863 H4
2864 I4
2865 I5
3807 A3
3808 A4
3809 A3
3810 A4
3813 A4
3817 B4
3818 B4
3820 B4
3821 B4
3829 C2
3830 C2
3831 B4
3833 B4
3835 D4
3836 C4
3846 F8
3851 C4
3855 D8
3856 D8
3859 E4
3861 D4
3862 E5
3864 E8
3869 F5
3870 F6
3871 F5
3872 B9
3873 F4
3876 B9
3877 G5
3878 G6
3879 G5
3882 H5
3884 H5
3885 H6
3886 A10
3887 H4
3888 H5
3890 I5
3891 I6
3892 I5
3899 F5
6812 F8
7801 D6
7802 G3
7803 I3
220n
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