Sony TRINITRON KV-VF21M40 Service Manual page 96

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
2.0Vp-p (H) 0.58Vp-p (3.58MHz) 0.54Vp-p (4.43MHz)
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
NTSC 14 REC/PB
PAL/SECAM
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 diagrams
< < < < < MA10(1/3) board MA10(2/3)
– 115 –
1 2 3 4 5
A
B
C
D
CN1001
3P
GND(AV) 3
NC
2
FE HEAD 1
FULL ERASE HEAD
E
CN1002
6P
CTL
HEAD CTL(X) 6
CTL(Y) 5
AUDIO
AERASE HEAD 4
ERASE AUDIO(REC)
F GND(AV)
3
HEAD
A HEAD REC 2
AUDIO
A HEAD PB
1
REC/PB
AUDIO(PB)
HEAD
TO ACE HEAD
G
H
I
J
K
VIDEO RF(PB)
PB RF
5V
REC RF
:CHIP
RF SWP
VIDEO RF(REC)
L
TO
GND
MA10(3/3)
COMP SYNC
RF ENV
DATA
CLOCK
M
boards , , , , ,
– 116 –
6 7 8 9 10 11
VOLTAGE
no mark:REC/PB
( ) :REC
< > :PB
AUDIO(REC)
(1.1) <4.8>
Q1001
C1002 R1003 (4.4)
2SD879-AA
0.01 1 <4.8> IC1001
F:CHIP 1/4W OSC
BA7755AF-E2
R1004
C1003 3.9k AUDIO HEAD SW
0.01 :CHIP L1002
B:CHIP 100µH
R1001 R1006
JW(5) 12k
R1005 :CHIP
T1001 47
1/4W
7
C1004
0
6 1 47
10V
R1002
180
2.2
1/4W 5 2 C1007 47 10V
L1001 C1005
47
100µH
10V
4 3 (3.9)
C1001 <0.3>
8
0.047
100V
:PT R1007 R1008
18k 270
:CHIP
:CHIP
C1006
0.01 B:CHIP
R835
470 :CHIP
1.5 VIDEO RF C
VIDEO RF(REC)
Q815 2.1
2SD601A
VIDEO RF(PB) Y/C MIX
R875
0 :CHIP
Q812
R881 R810 R823
R819 3.1 2SD601A SW5V
L801 47k 470 1k C879 VIDEO RF Y
470µH :CHIP :CHIP C804 L803 C808 22k :CHIP BUFF 150p
:CHIP L815
39p 39µH 0.01 CH:CHIP
CH:CHIP :EL0405 F:CHIP 2.3 Q808 120µH
(2.4) 2SD601A 3.1
C801
0.15 <4.0> V FM AMP
16V
B:CHIP Q803 2.5
R882 C813
39k 2SD601A 100p
2.1 1.7 CH:CHIP
:CHIP (3.1) V FM AMP
<1.4> (2.4)
L808
Q801 <0.8> R820
22k 15µH
2SD601A :CHIP R824
V FM BUFF R813 1k
820 :CHIP
R827
:CHIP R814 100
VIDEO RF 1.5 470 :CHIP
:CHIP
(PB)
L804 1.0
39µH
:EL0405
R803 R811 C807
R801 470 10p 0
2.2k
470 :CHIP :CHIP CH:CHIP R834
:CHIP
Q809 :CHIP
UN2213
JOG SW
SW5V
C803
0.01
F:CHIP
R829
4.7k
:CHIP
R833
0
:CHIP
R831
0
– 117 –
12 13 14 15 16 17
SW5V
R1020
100 L1004 AUDIO(REC)
47µH
:CHIP
C1014 R1023
0.01 5.6k
R1017
F:CHIP :CHIP
5.6k
R1019
10k
R1018
:CHIP C1019 C846 R873
3.3k 47 0.01 47k
:CHIP
10V B:CHIP :CHIP
C1015
1
C828
0.01
R1016
F:CHIP
12k
:CHIP
R885
(3.9)
1k
<0.3> :CHIP
R1014 R857
1.5k (0)
1k
:CHIP <3.6> :CHIP
0
2.2
A-GND
R1013 2.2 0 R858
18k :CHIP 1k :CHIP
C1011
Q1002 0.0015 (2.2)<0.1> 1.8
2SD601A B:CHIP
BIAS SW 3.6
(0.8)<4.8> C1012 C855
0 0.0015 B:CHIP 11 0.047
25V
2.0 B:CHIP
AUDIO(REC) X801
4.43MHz
2.2
(0.8) C1008 4.7
L1003
<0>
2.3 10
C1010
0.01 :PT AUDIO(PB)
R1011
R1010 R1015 2.2
C1009 330k 6.8k :CHIP R855 1.8k :CHIP
10 10k :CHIP
:CHIP
(2.9)
R1012
820 :CHIP 2.2 <3.6> R856
8.2k
C1013 2.2 X802 :CHIP C858
1 16V F:CHIP 1
2.2 3.58MHz
C823 (2.7) 0
1
<2.2> C847 C851
0.1 C850 0.047
C820 1 3.0 0.01
25V F:CHIP 25V
0.047 25V B:CHIP 2.3 F:CHIP B:CHIP
(REC) R841 C824 1.8 (0) R852 C856
6.8k :CHIP 0.01 F:CHIP 1.5k :CHIP 1
<3.7>
(2.5) 0
C816
0.022 B:CHIP <0>
C857
C817 (0) 3.7 0.022
B:CHIP
0.01 F:CHIP <3.0>
2 C849 C852
2.5 47 6.3V
1
R843 (3.1) L812
820 :CHIP
<1.4> 2.6 22µH
(0.2) C853
R815 3 0.1 25V F:CHIP
R840 220 2.1 <2.7>
(REC) 220
:CHIP 4 C848 R860
0.01 F:CHIP 3.3k :CHIP
C818
3.1 1.8
0.01 F:CHIP
C822 5 1.7
22 10V 0 C854
0.4 1
1.9
1.6
C819
390p (0)
CH:CHIP
<1.4> 0
7
(2.4) IC802
<1.8> 6 LA71504M-MPB
R837 C815 Y/C PROCESS
L809
10k 33p
:CHIP CH:CHIP 100µH
(0)
2.1
<3.0>
0
C841
10
8 9 C845
1
C835
16V
0.1 F:CHIP
25V
F:CHIP
R850
R849
0 4.7k
:CHIP :CHIP
R847
Q821
0
2SD601A :CHIP C843
100
BUFF 10V Q830
L811
2SB709A 1.5
22µH
BUFF
0.8
R848 R883
R845 4.7k
2.2k 1k
:CHIP :CHIP :CHIP
C844
C837
47 C840 10
100
10V
10V
SW5V
C868
22p R838
CH:CHIP 4.7k
:CHIP
R839 C825
1.8k 180p
:CHIP CH:CHIP
VIDEO(REC)
18 19 20 21 22 23
MA10
(2/3)
(Y/C PROCESS)
GND(A)
PB AL
AUDIO(PB) TO
MA10(1/3)
SW 5V
GND(A)
PB V
VIDEO(PB)
AUDIO(REC)
2.1
Q823
R863
680 2SD601A
:CHIP CLK BUFF
1.5
C859
0.1 25V F:CHIP
R861
47k
:CHIP
R864
0
:CHIP
C863
47 10V
R870
L813 C864 2.2k
47µH 0.1 25V F:CHIP
:CHIP
C861 Q825
12
0.01 2SD601A
F:CHIP
C BUFF
C-IN1 VSS
1.8
2.6
VDD C-OUT
2.6 16
0.4
C-IN2 CONT1
R867
C860 C862 C865
2.2k 0.01 13
1 :CHIP NC 4FSC 0.1
16V F:CHIP 25V
0.9
F:CHIP 2.2 14 B:CHIP
CLK
R865 Y-IN R869
0 :CHIP VCO 1k :CHIP
CONT2
15 C867
0 2.1 0.01 B:CHIP
2.0 Y-OUT RD
1.4
9.0 C866
Q824
IC801 0.1
2SB709A 25V
Y BUFF LC89978M-TE-L
B:CHIP
1H DELAY
CTL(X)
VIDEO(PB)
CTL(Y)
VCR L
A MUTE
SDA
SCL
NT JUDGE
SECAM/SVHSD TO
VCR V MA10(1/3)
QVD
COMP SYNC
RF ENV
RF SWP
DATA
CLOCK
B-SS8848<HK.>-MA10-P2
– 118 –