Table of Contents
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MA10(2/3) BOARD WAVEFORMS
1
1
REC
2
REC
PB
PAL/SECAM
NTSC
0.4Vp-p (H)
0.4Vp-p (H)
0.32Vp-p (H)
3
4
5
PB
REC
PB
0.32Vp-p (H)
0.24p-p (H)
0.25Vp-p (H)
6
6
7
REC/PB
REC/PB
REC
PAL
PAL/SECAM
NTSC
0.5Vp-p (H)
1.2Vp-p(H)
0.5Vp-p (H)
7
REC
7
REC
8
REC/PB
SECAM
NTSC
3.8Vp-p (H)
1.2Vp-p (H)
1.8Vp-p (V)
9
9
9
REC/PB
REC/PB
REC
PAL
SECAM
NTSC
2.4Vp-p (H)
2.4Vp-p (H)
2.4Vp-p (H)
9
PB
10
REC/PB
11
REC/PB
NTSC
0.54Vp-p (4.43MHz)
2.0Vp-p (H)
0.58Vp-p (3.58MHz)
12
12
12
PAL
SECAM
NTSC
REC:0.4Vp-p(H)
REC:0.2Vp-p(H)
REC:0.5Vp-p(H)
PB:0.3Vp-p(H)
PB:0.4Vp-p (H)
PB:0.2Vp-p (H)
13
13
14
PAL/SECAM
NTSC
REC/PB
REC:0.4Vp-p(H)
REC:0.5Vp-p(H)
PAL/SECAM
PB:0.3Vp-p (H)
PB:0.2Vp-p (H)
0.4Vp-p(H)
14
15
15
REC/PB
REC/PB
REC/PB
NTSC
PAL/SECAM
NTSC
0.4Vp-p (H)
0.4Vp-p (H)
0.4Vp-p (H)
16
16
SECAM
16
NTSC
PAL
REC:0.46Vp-p(H)
REC:0.14Vp-p(H)
REC:0.5Vp-p(H)
PB:0.3Vp-p (H)
PB:0.3Vp-p (H)
PB:0.2Vp-p (H)
Schematic diagram
Schematic diagram
MA10(1/3)
MA10(2/3)
<
<
<
<
<
board
– 91 –
1
2
3
4
A
(Y/C PROCESS)
B
C
CN1001
3P
GND(AV)
3
D
X
NC
2
FE HEAD
1
FULL ERASE HEAD
CN1002
6P
CTL(X)
E
6
CTL(Y)
5
AERASE HEAD
4
X
GND(AV)
3
AUDIO(REC)
A HEAD REC
2
A HEAD PB
1
AUDIO(PB)
TO ACE HEAD
F
G
H
I
SW5V
J
TO RP BLOCK
VIDEO RF(PB)
PB SRF
K
PB RF
SW5V
5V
SW5V
REC RF
RF SWP
VIDEO RF(REC)
C ROT
/3)
GND
COMP SYNC
RF ENV
L
DATA
CLOCK
M
board
,
,
,
,
,
– 92 –
5
6
7
8
9
10
11
SW5V
SW5V
(1.1)
(4.4)
C1002
R1003
Q1001
0.01
F:CHIP
1
2SD879-AA
1/4W
IC1001
OSC
(1.0)
BA7755AF-E2
R1004
L1002
AUDIO HEAD SW
C1003
3.9k
0.01
:CHIP
B:CHIP
R1001
R1005
R1006
JW(5)
47
SW5V
12k
1/4W
:CHIP
T1001
7
C1004
47
6
1
10V
R1002
180
1/4W
C1007
5
2
C1005
L1001
47
10V
4
3
C1001
8
0.047
100V
R1007
:PT
R1008
18k
:CHIP
270
:CHIP
R835
470
:CHIP
VIDEO RF(REC)
1.5
Q815
2.1
2SD601A
Y/C MIX
R875
0
:CHIP
VIDEO RF(PB)
SW5V
SW5V
Q812
2.5
R881
R810
R819
R823
2SD601A
L801
47k
470
22k
1k
BUFFER
:CHIP
:CHIP
C804
L803
C808
:CHIP
:CHIP
39p
0.01
C879
3.1
150p
CH:CHIP
:EL0405
F:CHIP
2.3
Q808
CH:CHIP
C801
(3.1)
2SD601A
3.1
0.15
2.4
V FM AMP
16V
B:CHIP
Q803
C813
R882
2SD601A
1.7
39k
100p
2.1
V FM AMP
CH:CHIP
:CHIP
R830
#
Q801
(2.4)
L808
:CHIP
2SD601A
R820
C873
22k
V FM BUFFER
#
:CHIP
:CHIP
R824
R813
1k
:CHIP
R828
820
C809
R827
#
R802
:CHIP
R814
100
1.5
#
#
470
F:CHIP
:CHIP
:CHIP
L804
Q806
1.0
R886
:EL0405
#
#
0
:CHIP
R806
R811
C807
R803
#
2.2k
470
10p
:CHIP
:CHIP
CH:CHIP
R801
Q813
Q809
470
#
:CHIP
UN2213
JOG SW
Q814
#
SW5V
SW5V
C805
R807
R816
C803
#
L805
#
(NTSC)
0.01
#
:CHIP
#
Q807
SW5V
:CHIP
R825
F:CHIP
#
#
R818
R804
#
#
C870
R808
C810
#
#
Q805
#
:CHIP
#
R884
C871
C811
#
L807
#
#
#
:CHIP
:CHIP
Q802
R880
#
C874
#
L814
#
#
Q811
:CHIP
:EL0405
C802
L806
#
R821
#
#
#
C869
R878
C872
#
C806
Q804
#
#
#
:CHIP
#
:CHIP
:CHIP
R879
C812
#
#
Q828
Q817
L802
R829
R876
#
4.7k
#
#
SVHS
Q829
#
:CHIP
R805
R817
R826
#
R809
R812
R822
#
#
#
#
#
#
(S)
Q810
Q826
#
#
R831
0
:CHIP
:CHIP
R832
#
12
13
14
15
16
17
SW5V
SW5V
R1020
100
L1004
:CHIP
R1027
R871
#
#
AUDIO(REC)
R872
R1026
#
#
C1014
0.01
R1017
F:CHIP
5.6k
C846
R873
0.01
1k
B:CHIP
:CHIP
C1015
C828
1
0.01
F:CHIP
R1016
C1022
12k
#
AUDIO(PB)
:CHIP
0
2.2
0.2
2.2
2.2
2.2
0.4
(3.9)
R885
4.1(SECAM)
1k
:CHIP
R1014
R851
R857
1.5k
#
R853
1k
#
:CHIP
:CHIP
(0)
2.2
A-GND
R1013
R858
0
18k
:CHIP
1k
:CHIP
C1011
Q1002
0.0015
2.2
0
11
2SD601A
B:CHIP
BIAS SW
C1012
1.8
X801
R874
0.0015
(2.2)
4.43MHz
C855
#
B:CHIP
0.047
:CHIP
25V
3.6
B:CHIP
47
10V
AUDIO( REC)
L1003
R859
C1008
4.7
2.0
#
:CHIP
R1009
#
C1010
2.2
2.3
AUDIO(PB)
:CHIP
0.01
:PT
R1010
R1015
C1009
R1011
10
R855
1.8k
:CHIP
330k
6.8k
:CHIP
10k
:CHIP
10
:CHIP
R1012
2.2
820
:CHIP
2.2
R856
(2.5)
8.2k
C858
C1013
X802
:CHIP
C1006
1
F:CHIP
2.2
3.58MHz
1
0.01
B:CHIP
(2.7)
C847
C823
2.2
1
0.1
F:CHIP
C850
C851
1
0.01
0.047
C814
C820
2.3
0
F:CHIP
25V
#
0.047
25V
B:CHIP
B:CHIP
R836
#
R841
C824
3.0
R852
C856
6.8k
:CHIP
0.01
F:CHIP
1.8
1.5k
:CHIP
1
0
AUDIO RF C(REC)
C816
(2.5)
0.022
B:CHIP
C857
(0)
0
R854
0.022
C817
C849
#
0.01
F:CHIP
2
1
B:CHIP
2.5
C852
3
3.7
47
6.3V
R843
(3.1)
L812
820
2.6
:CHIP
C853
AUDIO RF Y(REC)
2.1
5
R815
0.1
25V
F:CHIP
R840
L815
220
220
C818
1/4W
(0.2)
:CHIP
0.01
F:CHIP
C848
0.01
F:CHIP
3.1
C854
4
1.8
1
C822
0
1.7
22
25V
1.6
0.4
R860
3.3k
C819
:CHIP
390p
CH:CHIP
(0)
1.9
7
6
(2.4)
0
R834
R837
C815
0
10k
33p
L809
:CHIP
:CHIP
CH:CHIP
2.1
IC802
4.1
(0)
LA71504M-MPB
Q816
C836
L810
#
Y/C PROCESS
#
C841
#
10
C845
C821
1
R842
9
16V
#
#
8
F:CHIP
Q818
R849
R850
#
0
4.7k
C833
C839
:CHIP
#
:CHIP
#
C843
(NTSC)
C830
Q830
#
100
10V
2SB709A
L811
BUFFER
1.5
R848
R883
R845
4.7k
Q820
R844
2.2k
1k
:CHIP
:CHIP
#
#
:CHIP
0.8
C840
C844
100
10
10V
SW5V
SW5V
C868
R838
22p
4.7k
CH:CHIP
:CHIP
C827
C825
#
180p
CH:CHIP
CH:CHIP
R839
1.8k
:CHIP
C826
R833
#
0
:CHIP
– 93 –
18
19
20
21
22
23
GND(A)
PB AL
AUDIO(PB)
TU AL
TO MA10(1/3)
SW 5V
SW5V
GND(A)
PB V
TU V
VIDEO(PB)
Q822
#
SW5V
AUDIO(REC)
R862
#
SW5V
:CHIP
2.1
Q823
2SD601A
CLK BUFF
R863
680
:CHIP
1.5
C859
0.1
25V
F:CHIP
R861
47k
:CHIP
R864
0
:CHIP
SW5V
R866
#
C863
47
10V
L813
R870
12
C864
1.2
2.2k
0.1
25V
F:CHIP
:CHIP
Q825
2SD601A
C861
2.6
0.01
F:CHIP
C BUFF
C-IN1
VSS
1.8
2.6
VDD
C-OUT
16
2.2
13
0.4
C-IN2
CONT1
R867
C862
0.9
C860
2.2k
0.01
1
:CHIP
C865
SW5V
16V
F:CHIP
NC
4FSC
0.1
25V
B:CHIP
14
F:CHIP
Y-IN
CLK
R868
#
2.1
R869
2.2
1k
:CHIP
CONT2
VCO
0
15
C867
9.0
0.01
B:CHIP
R865
0
2.0
Y-OUT
RD
:CHIP
1.4
C866
Q824
IC801
0.1
2SB709A
25V
LC89978M-TE-L
Y BUFFER
B:CHIP
SW5V
1H DELAY
SW5V
SW5V
TO SERVO BLOCK
CTL(X)
CTL(Y)
VCR L
A MUTE
SDA
SCL
NT JUDGE
SECAM/SVHSD
TO MA10
VCR V
~~~~~
S VHS
~~~~
JOG
QVD
COMP SYNC
RF ENV
RF SWP
DATA
CLOCK
VOLTAGE
NO MARK:REC/PB
# MARK-PARTS NOT USED FOR THIS MODEL.
(
):REC
<< >>: PB
B-SSS10370-HK.-MA10-P2
– 94 –
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