- 101 -
- 100 -
SCHEMATIC DIAGRAM AND CHECK POINT FOR WAVEFORM (OPERATION/DISPLAY)
H
NC
E
J651
MSP-281V3-A
FRONT AUDIO IN R
1
2
3
H
E
J652
MSP-281V1-B
FRONT AUDIO IN L
1
2
H
E
J653
MSP-281V4-B
FRONT VIDEO IN
1
2
Vout
B+
GND
OS651
PIC-37043LO-H
1
2
3
SW655
EVQ21505R
CH DOWN
SW653
EVQ21505R
REC/OTR
SW651
EVQ21505R
VCR EJECT
SW654
EVQ21505R
CH UP
SW652
EVQ21505R
POWER
IC651
PT6315
FIP DRIVER
1
1
0
11
12
13
14
15
16
17
18
19
2
20
21
22
23
24
25
26
27
28
29
3
30
31
32
33
34
35
36
37
38
39
4
40
41
42
43
44
5
6
7
8
9
V651
HNV-07SS46
VACUUM FLUORESCENT DISPLAY
1
10 11 12 13 14 15
2
22 23 24 25 26 27 28
31 32
5
6
7
8
9
CP651
IMSA-9615S-08C-PP
1
2
3
4
5
6
7
8
CP653
005P-2100
L651
10uH
L652
10uH
C652
100
6.3V
YK
C664
0.1
B
C668
0.1
B
C676
0.0022
B
C675
0.0022
B
C669
100P
CH
R655
10K
R656
82K
R654
10K
R667
47K
R658
5.6K
R657
2.7K
R659
3.3K
R651
100
R664
10
1/4W
R668
75
C666
100
6.3V
YK
C659
10
16V
KA
C661
10
16V
KA
D657
MTZJ5.1C
DURING PLAYBACK.
MEASURED WITH THE DIGITAL TESTER
NOTE:THE DC VOLTAGE EACH PART WAS
OF PRINTING AND SUBJECT TO CHANGE WITHOUT NOTICE
NOTE: THIS SCHEMATIC DIAGRAM IS THE LATEST AT THE TIME
AUDIO SIGNAL(REC)
RECORD LUMINANCE SIGNAL
RECORD COLOR SIGNAL
HE
HEATER_DC-
P11
P10
P9
P8
P7
P6
P5
P4
P3
P2
P1
1G
2G
3G
4G
5G
6G
7G
-22V
P11
P10
P9
SDA
SCL
P8
FL_CS
REMOCON
7G
P7
KEY-B
6G
P6
KEY-A
VOLUME_A
5G
P5
VOLUME_B
DVD_LED
4G
P4
VCR_LED
3G
P3
2G
P2
1G
P1
FRONT_A_IN-L
FRONT_A_IN-R
FRONT_V_IN
VOLUME_A
VOLUME_B
AT+5.2V
-22V
KEY-A
HE
KEY-B
HEATER_DC-
FL_CS
SDA
DVD_LED
SCL
AT+5.2V
AT+5.2V
VCR_LED
GND
KEY-A
FRONT_V_IN
FRONT_A_IN-R
FRONT_A_IN-L
REMOCON
AT+5.2V
KEY-B
FROM/TO REGULATOR
FROM/TO Y/C/AUDIO/H.AMP
FROM/TO HI-FI/DEMODULATOR
FROM/TO SYSCON
FROM/TO OPERATION
(CP601)
NC
LED
DRIVE
OSC
SERIAL
DATA
INTERFACE
GRID
DRIVER
SEGMENT
DRIVER
GRID
DRIVER
KEY SCAN
OUTPUT
DIPLAY MEMORY
(12bits * 12Words)
TIMING GENERATOR
DIMMING CIRCUIT
KEY MATRIX MEMORY
CONTROL
NC
NC
NC
NC
NC
NC
-23.0
-23.0
-19.9
-19.8
-19.9
-19.9
-19.9
-19.8
-19.9
5.2
0
0
0
0
3.0
0.2
5.1
5.1
2.7
0
0
0
0
5.2
-13.5
-7.2
-10.3
-10.4
-13.5
-16.6
-19.7
-22.7
-22.6
-23.0
-23.0
-23.0
-23.2 -22.7
-22.8
-22.7
-22.7
-22.7
-22.7 -19.7
NC
NC
NC
NC
NC
NC
NC
NC
AM
FM
5G
4G
3G
2G
1G
MHz
kHz
PM
TRK
VCR
REC
6G
7G
D
PL
dts
GND
VOLUME-A
VOLUME-B
AT+5.2V
KEY-A
KEY-B
4.9
0
5.1
DVD LED
VCR LED
39
41
40
Show page 115 - 119 the waveform of mark position.