Hitachi VTMX900ECT Manuel D'entretien page 115

In/Out Part (IO)
1 2 3
..
OSCILLOGRAMS
F5506
7VNEG
..V MEASURED IN PLAYBACK MODE
8
1954-A
..V MEASURED IN RECORD MODE
A 7
GNDVIO
GNDVIO
F5405
F5505
5
6
1954-C
4
GNDVARI
GNDVIO
B
100K
GNDVIO
100K 3910
F5402 3911
2
3
1954-B F5401 5V_STBY
1
5V_STBY 5V_STBY
2905
GNDVARI
100n
C
GNDVIO
5.1V
I909
3.7V
7907
3.1V
GNDVARI GNDVARI BC847BW
BC847BW
I910 3935
9VASW
2.2V
47R
I911
1955
I912
3937
D
6
47R 1.8V
7909
0V
5 GNDVIO
BC857BW
4
F5503
3
GNDAIO
GNDVIO
2
F5501
1
E
5V_STBY
5901
5.1V
10u
7904
STV6401
3 20 19 18
GNDVIO GNDVIO
F
2910
I914
100n
4
1.4V
VI1
O1
1.8V
I915
2911 6 2.1V
VI2
100n 2V
I916 8 O2
1.4V
VI3
0.4V
2913 I917 10
VI4
O3
100n 1.9V
2914 12
VI5
I918
100n
G BUS
5 DB1
SDA
7 DB2
SCL
13 DB3
GNDFV
BUS
NC GND
1 17 14
GNDVIO
H
2930
I
1n
C901
2931
C903
1n
GND
9704 C902 4951
GNDFV GNDVIO GNDAIO GNDVARI
1 2 3
REC 31 REC
0V
A: DC, 200mV/Div, 20us/Div A: DC, 200mV/Div, 20us/Div
SCART1 PIN19 SCART2 PIN19
4 5 6 7
7VNEG
F5114
GNDVIO
F5120
GNDAIO
F5119 31
F5110
4902
3915 3903
GNDVIO
V
2921
470p
GNDVIO
GNDVIO
GNDVIO GNDVIO
5V_STBY
7908
14VM1 14VM1
14.2V
7910
BC847BW
0.5V
GNDVIO
0V 3939
820R
I905
4904
I913
7912
I907
0V
BC847BW
0.7V
0V
GNDVIO GNDVIO
7913
BC817-40
GNDD
0.8V GNDVIO
I923
2 1.2V
I922
16
1.7V
GNDD
I921
15 2.2V
1.7V
7914
BC847BW
I920
9
11
GNDD
7917
BC847C
I925
1u
2929
1u 2925
2928 100p
GNDAIO
4 5 6 7
32 REC 33
0V 0V
A: DC, 200mV/Div, 500us/Div A: DC, 200mV/Div, 500us/Div
SCART 1 PIN1/3 SCART 2 PIN1/3
3-33 3-33
8 9 10
33
GNDVIO
32
F5220
F5219
F5210
3904 3905
V V V
GNDVIO
2916 2917
470p 470p
5V_STBY
4901
5.1V
35
I901
3918
0V 7906
2904
BC847C I902
6K8
3920
0V
2927
10u
6K8
100p
GNDAIO
7VNEG
F907
F909 5904 F5601
100u
F908 3941 F5603
220R
F910 F5602
3940
220R 1956
JPJ8318
4905
0V
GNDVIO GND
5V_STBY
5V_STBY
2915
I926
10u
GNDAIO
7VNEG
8 9 10
REC 34 E1 35
0V
0V
A: DC, 200mV/Div, 500us/Div A: DC, 200mV/Div, 500us/Div
T7906 EMITTER AIN1 T7905 EMITTER AIN2
11 12 13 14
5V_STBY 9VASW 14VM1 18VNEG
4903
5V_STBY 9VASW 14VM1 18VNEG
GNDAIO
18VNEG
7VNEG
34
F901
2K2
GNDAIO
3901
3909 3906 3907
V V V
GNDAIO GNDAIO GNDAIO
2919
5V_STBY
470p
5.1V
7905
36
BC847C
I903
3914
GNDAIO 0V
GNDAIO 2903
6K8 0V
2926
3916 10u
I904
100p
6K8
GNDAIO
7VNEG
GNDAIO
F903
F904
F905
F906
5V_STBY
16 5.1V
7911-B
Vdd
HEF4053BT
0V 2 Y0 S 10
I932
1 Y1 Z 15
0V 0V
Vss Vee E
8 7 6
GNDAIO GNDAIO
7VNEG
GNDAIO
16 7911-C
Vdd
I927 HEF4053BT
9 S Y0 5 0V
4 Z Y1 3 0V
0V
E Vee Vss
6 7 8
I928
16 7911-A
Vdd
I929 HEF4053BT
11 12
S Y0 0V
14 Z Y1 13 0V
0V
E Vee Vss
6 7 8
I930
11 12 13 14
E2 36
0V
1951 A4 6901 B14
1952 A9 6902 A3
1954-A A1 6903 A4
1954-B C1 6904 B11
1954-C B1 6905 F8
1955 D1 6906 B5
1956 E10 6907 B6
2901 B13 6908 F7
2902 B14 6909 C4
2903 C14 6910 C4
2904 C10 6911 A1
2905 C2 6912 B1
2906 C2 6913 F10
A
2907 F4 7904 F3
2908 F4 7905 C14
2909 F2 7906 C9
2910 F2 7907 C2
2911 F2 7908 C4
2912 E1 7909 D3
2913 G2 7910 D6
2914 G2 7911-A H1
2915 I8 7911-B E1
2916 B8 7911-C G1
2917 B8 7912 E5
2918 C13 7913 F7
B
2919 B13 7914 G5
2920 C12 7917 I7
2921 B7 9704 I2
2922 F12 C901 I3
2923 F3 C902 I3
2924 G1 C903 I3
2925 I7 F5101 C8
2926 C14 F5102 C7
2927 C9 F5103 C7
2928 I7 F5104 A7
2929 I7 F5106 C6
C
2930 I1 F5108 C6
2931 I1 F5110 B5
2932 B3 F5114 A5
2933 B4 F5116 C6
3901 B14 F5119 A5
3902 A1 F5120 A4
3903 B7 F5201 A13
3904 B8 F5202 A12
3905 B8 F5203 A12
3906 B12 F5206 A11
3907 B13 F5208 C11
3908 B13 F5210 B9
D
3909 B12 F5216 C11
3910 B2 F5219 B9
3911 B1 F5220 B9
3912 B3 F5401 C1
3913 B4 F5402 B1
3914 C13 F5405 A1
3915 B7 F5501 E1
3916 C13 F5503 D1
3917 C14 F5505 A2
3918 C8 F5506 A1
3919 C13 F5601 D10
3920 C8 F5602 E10
E
3921 C5 F5603 E10
3922 D11 F901 A14
3923 D12 F902 D14
3924 D12 F903 D14
3925 D13 F904 D14
3926 C9 F905 D14
3927 C9 F906 E14
3928 C3 F907 D8
3929 C4 F908 E8
3930 D6 F909 D8
3931 D7 F910 E8
F
3932 D7 F911 H5
3933 D8 F913 G5
3934 C3 F914 H2
3935 D3 I901 C9
3936 D5 I902 C10
3937 D2 I903 C13
3938 D4 I904 C14
3939 D6 I905 E6
3940 E9 I906 E5
3941 E9 I907 E6
3942 E5 I908 F7
3943 F6 I909 C2
G
3944 F6 I910 D3
3945 G7 I911 D4
3946 G8 I912 D3
3947 G10 I913 E4
3948 G4 I914 F3
3949 H4 I915 F3
3952 I7 I916 F3
3953 I7 I917 G3
3954 F12 I918 G3
3955 C14 I919 G4
3956 I8 I920 G4
3957 E9 I921 G4
H
3958 E10 I922 F4
3959 C1 I923 F4
3960 C1 I924 G6
3961 E1 I925 I7
3962 H1 I926 I8
3963 A11 I927 G11
3964 A12 I928 H11
3965 A13 I929 H11
3966 H1 I930 I11
3967 A12 I931 G12
4901 C8 I932 E12
I
4902 B6 I933 A10
4903 A12 I934 A11
4904 E4 I935 A11
4905 E7 I936 F1
4907 C1
4908 C1
4951 I3
5901 E3
5904 D9
5905 B1
5906 B1