Service manual
CD94V5
DISC DRIVE
P
P
1811
P
P
P
P
4
3
2
1
P
-
+
-
+
E
GND
LASER
LASER CONTROL
INNERSWITCH
M
M
SLIDE
DISC
B
A
D
C
E
F
LASER
MONITOR
DIODE
ARRAY
F
A
B
MONITOR
B
A
D
C
E
F
LASER
MONITOR
+
C
D
B
A
D
C
E
F
LASER
MONITOR
+
polco
polco
polco
FRONT BOARD COMBI BOARD /
CD-PART
WATCHDOG
PP
P
Focus search
Service step 2
2V
+
-
0.3s
Track
Focus
SHUFFLE
PROGRAM
REPEAT
ALL
A
F
B
G
E
D
C
1
2
pin
P
provisional
P
4_23MHz
4,23MHz
DATA_OUT
DATA_OUT
CLOCK
CLOCK
CLOCK
DATA
DATA
DATA
MLA
MLA
INNERSWITCH
MLA/DISCHARGE
MLA/DISCHARGE
DISC
JP1/ADJ
JP1/ADJ
CD_RESET
CD_RESET
TRACK
SLIDE
error_flag
DATA
LRCK
DSCK
external DAC
indication for
DOOR
MLA
DATA
CLOCK
1626/16
from REC/AMP - part
TABLE
DISPLAY CONNECTION
1D
2A2B2C
SHUFFLE2G2D
PROGRAM2F2E
1A1B1C
ALL1G
REPEAT
1F1E
COM3COM2COM1
COM3
COM2
COM1
9
8
7
6
5
4
3
2
1
COM3
COM2
COM1
TRACK
INNERSWITCH
DISC
TRACK
FOCUS
FOCUS
SLIDE
MONITOR
E
F
B+D
A+C
LASER
from 1811
to 7803/pin36
from REC/AMP - part
to RESET CIRCUIT
KEY IN
GND
LCD4
LCD5
LCD6
LCD7
LCD8
LCD9
STABILIZING CIRCUIT +B(CD)
DOOR SWITCH
from 7803/20
SIGNAL PROCESSOR
MICROPROCESSOR
bead on wire
3865 L 2
3864 K 2
3863 I 3
3862 J 2
3861 J 2
3860 J 2
3897 L25
3859 O15
3858 O15
3857 L 6
3856 K 9
3855 K23
3854 P24
3853 P24
3852 O24
3851 N24
3850 M24
3896 B28
3849 D13
3848 H13
3847 H13
3846 L24
3845 L23
3844 K13
3843 L 3
3842 L14
3841 L13
3840 M14
3895 C28
3839 M13
3838 M13
3837 M13
3836 N14
3835 N16
3834 C19
3833 N14
3832 P14
3831 O14
3830 P13
3894 B14
3829 K 9
3828 K 9
3827 K 9
3826 L 9
3825 C15
3824 L 8
3823 M 9
3822 M 9
3821 M 8
3820 N 9
3893 B14
3819 N 9
3817 A23
3814 E 7
3812 B18
3811 I21
3810 C13
3809 B13
3808 G17
3807 G19
3806 H19
3892 P25
3805 C28
3804 G26
3803 H24
3802 K 4
3801 J 4
3800 K16
2896 B28
2895 C28
2893 N23
2892 J25
3891 O25
2891 L23
2880 F26
2876 D14
2875 N16
2874 K 5
2873 B14
2872 C15
2871 H 7
2861 L 2
2860 J 4
3890 B14
2859 F23
2858 G 6
2857 K15
2856 E24
2855 E25
2854 E24
2853 K 3
2852 B28
2851 C28
2850 B23
3889 I15
2849 K14
2848 P25
2846 N25
2844 K14
2843 N 8
2841 O 8
2840 H24
2839 C18
2838 C18
2837 D14
3888 H15
2836 D28
2835 E13
2834 L25
2833 L15
2832 K13
2831 L14
2830 M13
2829 M14
2828 N14
2827 N15
3887 H15
2826 O13
2825 P14
2824 P13
2823 J 9
2822 J 9
2821 K 8
2820 K 8
2819 L 9
2818 M 9
2817 M 8
3886 N 6
2816 M 8
2815 M 6
2814 N 9
2813 G18
2808 H25
2807 H18
2806 H19
2805 H18
2804 G17
2803 K 4
3884 M14
2802 K25
2801 D14
2800 E26
1820 B 2
1813 A 5
1812 A 5
1811 M 5
1810 K28
1809 E14
1808 E14
3882 E13
1807 E15
1804 G 4
1803 G 4
1802 F 4
1801 E 4
1800 E 4
3881 E13
3880 M 9
3899 F 7
3879 K 2
3878 C15
3877 B13
3876 G 3
3875 G 3
3874 J15
3873 F 3
3872 E 3
3871 H 7
3870 G 7
3898 M25
3869 D24
3868 J24
3867 J24
3866 N23
7855 B15
7854 O16
7853 K 3
7852 J 3
7851 J 2
7850 I 3
7806 N27
7805 K27
7803 I10
7802 C27
7801 A20
7800 E10
6850 K 3
6805 B15
6804 C13
6803 C13
6802 B15
6800 H25
45671 8 9 10 11 12 13 14 15 16 17 18 192 20 21 22 23 24 25 26 27 28 293 30 31
M
L
K
P
J
I
H
G
F
E
D
C
B
A
O
N
M
L
K
P
J
I
H
G
F
E
D
C
B
A
O
N
45671 8 9 10 11 12 13 14 15 16 17 18 192 20 21 22 23 24 25 26 27 28 293 30 31
PW
PW
PW
PW
PW
PW
PW
PW
PW
PW
PW
PW
PW
PW
PW
PW
PW
PW
PW
PW
PW
PW
PW
PW
PW
PW
PW
PW
PW
PW
PW
PW
PW
PW
PW
PW
PW
PW
PW
PW
PW
PW
PW
PWPW
PWPW PW
PW PW
PW
PW
PW
PW
PW
T882
T880
T881
T866
T865
T850
T851
T855
T860
T871
T870
T801
T802
T804
T806
T807
T831
T805
T803
T840
T842
T810
T811
T812
T814
T815
T816
T821
T817
T818
T819
T822
T820
T823
T824
T825
T826
T808
T891
T890
T892
3805
100R
22k
3879
3890
10k
3893
33k
3894
470R
3825
470R
3891
470R
3892
470R
3899
1k
3898
470R
3897
470R
3868
1R
3869
470R
3849
220R
3881
22k
3882
10k
1M
3886
8R2
3861
8R2
3860
3812
22k
3896
3k9
3895
3k9
3802
100R
3810
1k
3809
3k9
3807
33K
3806
2k2
3884
39k
3817
100k
3808
2k7
3830
15k
3832
390R
3831
18k
3833
27k
3836
1k
3838
100k
3837
4M7
3839
1M
3841
680k
3842
68k
3840
1k
3829
33k
3828
12k
3827
1k5
3826
6k8
3824
150R
3819
1M5
3820
180k
3821
1k5
3822
27k
3823
100k
3844
56k
3835
18R
3856
8k2
3880
1k2
3859
10k
3k3
3857
3858
1R
3804
150R
3834
220R
3811
4M7
3814
22k
3872
39k
3873
22k
3875
2k2
3876
4k7
3852
470R
3851
15k
3854
1k5
3853
15k
3855
33k
3846
1k
3850
4k7
3845
120k
3k3
3862
330R
3863
2k2
3864
2k2
3865
3847
22k
3803
2R2
10R
3800
3801
4R7
390R
3843
3848
22k
3877
15k
3878
680R
3887
220R
470R
3888
470R
3889
3874
220R
DVDD
DVDD
+B(CD)
REF_B
REF_B
+M
REF_B
REF
REF_B
REF_B
+B(CD)
+LASER
+LASER
+LASER
+B(CD)
+B(CD)
+B(CD)
REF
REF
REFREF
REF
REF
REF
REF
REF
REF
REF
REF
REF
REF
+A(CD)
+B(CD)
+A(CD)
+A(CD)
+B(CD)+B(CD)
+B(CD)+B(CD)
+M
+M
+M
+M
+LASER
+LASER
+A(CD)
220u
2836
2853
47u
1u
2895
1u
2896
2860
47u
47u
2840
2828
10u
2826
0.47u
2824
0.47u
2816
0.47u
47u
2808
2823
4u7
2832
2u2
2833
47u
2821
10u
2827
47u
2820
47n
2818
1u
47u
2803
1u
2801
2892
47u
2893
47u
100n
2850
2844
100p
2880
1n
2875
1n
1n
2874
1n
2876
100p
2872
100n
2873
2891
10n
2861
1n
2834
100n
2802
10n
2858
100p
2800
1n
2835
100p
2849
100p
4n7
2851
4n7
2852
2838
1n
2813
2n2
2805
150n
2807
22p
2822
22n
39p
2814
2825
15p
2831
22n
2829
33n
2817
3n3
2804
1n5
82p
2830
2819
100n
10n
2815
2841
100p
2843
5n6
2806
470P
2846
1n
2848
1n
2839
22p
2837
1n
100p
2855
100p
2854
100p
2856
2857
100p
10n
2859
6
8
1
3
4
7
5
2
KEY IN
WST
WST
CD_SYNCHRO
FOCUS+
FOCUS-
TRACK+
TRACK-
CD_R
CD_L
TRACK+
TRACK-
FOCUS-
FOCUS+
KEY IN
KEY IN
MONITOR
MONITOR
BZX79-B3V0
6800
6850
BZX79-B3V0
6805
BZX79-B3V9
BC548C
7853
3867
3R3
8R2
3866
5801
40
39
38
37
36
35
34
33
42
41
25
26
27
28
29
30
31
32
17
19
18
20
21 22
23
24
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
10
11
12
13
14
15
16
17
18
19
1
20
21 22
23
24
25
26
27
28
29
2
30
31
32
33
34
35
36
37
38
39
3 40
41
42
4
5
6
7
8
9
1811
10
11
12
13
14
15
1
2
3
4
5
6
7
8
9
1810
1
2
3
4
5
6
5803
8.46MHZ
1809
1
2
1808
1
2
7851
BC558B
7854
BC558C
7850
BC327/40
7852
BC327/40
7806
TDA7073A
+
-
VDD
+
-
7805
TDA7073A
14
10
11
13
16
9
12
15
+
-
VDD
+
-
6803
1N4148
6804
1N4148
6802
1N4148
7855
BC548C
1820
123456789
1807
7800
TMP47C422F
10
11
12 13 14 15 16 17 18 19
1
20 21 22
23
24
25
26
27
28
29
2
30
31
32
33
343536373839
3
4041424344
4
5
6
7
8
9
ADC INPUT
I/O PORT
XIN
XOUT
INT1
RESET
KE0
HOLD
R82
T1
R83
SI
R90
SO
R91
SCK
R92
P50
ZIN
P51
SLOW CLOCK
I/O PORT
RAM
4-BIT CPU
LCD - DRIVER
ROM
R63
R62
R61
R60
SEG8
SEG7
SEG6
SEG5
SEG14
SEG13
SEG12
SEG11
SEG10
SEG9
SEG15
R43
SEG1
R42
SEG2
R81
R41
SEG3
I/O PORT
VLC
R40
SEG4
T2
OUTPUT
I/O PORT
R80
COM1
PORT
SERIELL INTERFACE
INT2
R73
COM2
XOUTS
R72
COM3
XINS
R71
COM4
PULSE
VDD
R70
SEG0
VSS
AIN3
AIN2
AIN1
AIN0
1813
10
11
1
2
3
4
5
6
7
8
9
1812
10
11
1
2
3
4
5
6
7
8
9
STOP
1800
PLAY
1801
PB-MODE
1802
PREVIOUS
1803
NEXT
1804
P
to Source switch
amplifier/recorder part
SLIDE MOTOR
DISC MOTOR
MOTOR DRIVER
1
2
6
7
3
4
5
8
SERVO DRIVER
14
10
1
2
6
7
11
3
4
13
16
9
12
5
8
15
+
-
-
+
FOCUS
TRACK
EVA Combi , 021097
RESET CIRCUIT
DECODER PART
CD94V5
DISC DRIVE
SERVO PART
3870
22k
3871
1k
+M
4n7
2871
5803 D19
5801 L22
switch on reset
(internal pullup resistor)
switch off
reset
2,9V
3,4V
8,4V
4,4V
2,7V
2,7V
2,7V
2,7V
2,7V
2,7V
2,7V
2,7V
2,7V
1V
4,4V
1V
4,3V
1,2V
4,3V
1,6V
0V
4,4V
4,4V
4,4V 0V
4,4V
9,4V
9,4V
9,4V
4,7V
4,4V
9V
9V
8,4V
8,4V
2,3V
1,8V
4,7V
4,7V
4,7V
4,4V
2,2V
3,5V
2,2V
2,2V
2,2V
2,2V
2,2V
2,2V
2,2V
2,2V
2,2V
2,2V
2,2V
2,2V
2,6V
2,6V
2,2V
2,4V
0,7V
4,4V
2,3V
2,2V
2,1V
2,2V
2,2V
1,8V
2,2V
0,2V
0,2V
2,9V
1,8V
2,3V
2,2V
2,1V
1,8V
4,4V
2,1V
1,4V
1,4V
3V
1V
4,6V
4,6V
1,5V
1,5V
1,6V
4,6V
3V
2,7V
4,6V
4,7V
4,7V
4,7V
4,7V
4,7V
4,7V
4,7V
4,7V
2,2V
2,2V
2,2V
2,2V
2,2V
2,2V
2,2V
2,2V
9,6V
9,6V
voltages measured in STOP mode
3V
3V
4,3V
2,5Vpp
DC voltages measured
in CD play mode
(mains supply 230V)
EVM
V
...V
4V
4V
4V
left channel
MSB
LSB
MSB
LSB
right channel
TRANSFER OF AUDIO SAMPLES VIA SERIAL INTERFACE
TB 0.5ยตs/Div
4.23MHz
176.4kHz
DATA
WORD SELECT
CLOCK
ATTENTION:
Take care of ESD
eye-pattern
TB=0,5 us/DIV
HF
TB=5ms
2.1V 200mV
normal play mode
TB=5ms
120Hz
100mV
in Servicestep 3
Adj. of TRACK BALANCE
2.1V
2.1V
0.3s
-
+
0.2V
Service step 2
Focus search
2.9V
2.1V
1.3V
not moving
slide out
slide in
use Service testprog step 1
PWM
DISC MOTOR
TB 20us/Div
4V
1700Hz Trackgain
1300Hz Focusgain
While adj. procedure
TB=0.2ms
4V
4V
TB 10ms/Div
Communication
right out
left out
AND
TIMING
DIVIDER
CONTROL
FREQUENCY
GND
LEFT
RIGHT
CHANNEL
CHANNEL
REGISTER
REGISTER
REF
VDD
11k
V
WS
DATA
BCK
Iref
Continuous Calibration DAC
OUT
on/off
on/off
INTERFACE
TEGain
OUT
OUT
TS
DIS
MLA
FOCTRACK
TC/SHOCK
DET.FILTER
MIRROR
Signal Generator
ADJUST LOGIC
TC/SHOCK
TS+
HF
- (A+B+C)
MIRROR
FOCUS SEARCH
+
-
+
-
-
+
+
-
-
+
+
-
track adj.
GND
BIAS
BIAS
selfadjusting
SERVO PROCESSOR
SERIAL DATA
INTERFACE
RESET
SLIDE
SS-
SS+
TS-
TG2
ALPC-
ALPC+
HF detected
HFI
ABC
MRC
ALPC
C
FSR
Generator
Foc Adj.
SGF
I/O
I
REF
V
cc
FS
OUT
MSD
D
OUT
MCK
JP1
SG
A-B
Generator
A
B
C
E
F
SGT
TE-
TG1
TE
V
cc
V
cc
V
cc
2
C
LPF
FS-
FEGain
FE-
OUT
FOCUS/ALPC on,off
7803
M62475FP
SEL
C846
C423
ADJ.CLK
LOCK
CKSEL
MLAB
Dig.V
DD
DSPS
SBQS
CRCF
SCAND
PWM
DVDD2
DVSS2
MCK
MSD
EXP1
HF
EFFK
KILLB
EST1
SYCLK
SCCK
SBCO
XO
TEST
SUBCODE Q REG.
SUBCODE Q CRC
SUBCODE DEMOD.
MODULATOR
PWM
INTERFACE
MCU
ERROR MONITOR
CIRC DECODER
MEMORY CONTROL
18K SRAM
DET
PHASE
DET
FREQ
VCO
HF COMPARATOR
DETECTOR
DIGITAL SILENCE
EFM TIMING GEN.
DEMOD
EFM
PROTECT
SYNC DET
DIGITAL FILTER
MUTE CONTROL
INTERPOLATION
FILTER
DE-EMPHASIS
L/R ch
LPF
1 bit D/A
SEL SEL SEL
MODULATOR
DIG.FILTER
64/128fs
3/4 DETECTOR
Anal.Vss
SEL
RESET
GENERATOR
CLOCK
X`tal TIMING
GENERATOR
CONTROL
CLV SERVO
CONTR
PHASE
CONTR
FREQ
EXP2
CGREF
AMPREF
LOUT/
DO
ROUT/
DSCK
LNEG
RNEG/
LRCK
IREF
Anal.V
DD
EST2
TLC
LPF
M65824FP
7801
TDA1311AT/N2
7802
XI
DVSS
CS 49 125
7-2 7-2 7-2