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MAIN III (OPERATION) SCHEMATIC DIAGRAM
TO MV
95
HEATER_F-
TO MVI
81
VFD_-30V
R6322
0
TO MV
13
UNSW+5V_SYSCON
TO MI
25
PANE_CS
TO MI
30
SCK_1
29
MASTER_DATA_1
TO MI
TO MI
37
IR_DATA
TO MI
44
KEY_1
KEY_2
TO MI
43
TO MI
42
KEY_3
41
TO MI
KEY_4
TO MI
47
KEY_5
U6301
A2BB00000111
(DISPLAY TUBE)
F-
NC
P2
P4
P6
P8
P10
P12
P14
NC
NC
2G
8G
6G
4G
F-
NP
P1
P3
P5
P7
P9
P11
P13
NC
NC
7G
5G
3G
1G
P15
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
R6353
47K
D6324
MA4056-M
(5.6V)
C6310
C6315
PT
100/50V
R6301
68K
R6302
68K
R6318
68K
R6304
68K
R6305
68K
R6306
68K
R6307
68K
R6308
68K
R6309
68K
R6319
68K
11
10
9
8
7
6
5
4
3
2
1
12 DGT3
44
DGT14/SEG13
13 DGT2
DGT15/SEG12
43
14 DGT1
SEG11
42
15 DGT0
SEG10
41
16 VPP
40
SEG9
L6301
IC6303
17 NC
39
PT6351
SEG8
100U
18 VDD
(DISPLAY PANEL CONTROL)
SEG7
38
X6301
C6306
EF0EC4004T4
19 OSC1
SEG6
37
470/6.3V
C6302
20 OSC2
36
SEG5
0.1
21 VSS
SEG4
35
22 NCS
SEG3
34
C6301
PT
23 24
25 26 27 28 29 30 31 32 33
SW6328
SW6325
TP6305
TP6306
EVQ11A09K
EVQ11A09K
PT
PT
DVD_STOP
DVD_OPEN/CLOSE
R6317
R6315
R6314
SW6329
SW6326
1800
1800
1800
SW6324
EVQ11A09K
EVQ11A09K
DVD_PLAY
VCR/DVD_FF/SEARCH/SKIP+
EVQ11A09K
R6316
SW6327
3900
EVQ11A09K
VCR/DVD_REW/SEARCH/SKIP-
F+
NC
NP
F+
32
33
34
35
R6320 27
SW_HEATER_F+
82
TO MVI
R6321 27
GND
OUT Vcc
1
2
3
U6302
LSSZ0007
(IR RECEIVER UNIT)
R6303
47
C6307
100/6.3V
SW6319
TP6304
TP6303
PT
EVQ11A09K
PT
VCR/DVD_POWER
R6313
R6310
SW6323
SW6320
1800
1800
EVQ11A09K
EVQ11A09K
VCR_CH DOWN
VCR_PLAY
VCR_CH UP
R6311
SW6321
3900
EVQ11A09K
VCR_STOP/EJECT
R6312
SW6322
12K
EVQ11A09K
VCR_REC/TIME
NOTE:
For placing a purchase order of the parts,
be sure to use the part number listed in the parts list.
Do not use the part number on this diagram.
NOTE:
FOR SCHEMATIC DIAGRAM AND CIRCUIT BOARD LAYOUT NOTES,
REFER TO BEGINNING OF SCHEMATIC SECTION.
NOTE:
PARTS MARKED "PT" ARE NOT USED.
I/O CHART OF IC6303
Pin No. I/O
Signal Name
Description
1
O
DGT13/SEG14
Digit 13/Segment 14
2
-
DGT12/SEG15
(Not used)
3
-
DGT11
(Not used)
4
O
DGT10
Digit 10
5
O
DGT9
Digit 9
6
O
DGT8
Digit 8
7
O
DGT7
Digit 7
8
O
DGT6
Digit 6
9
O
DGT5
Digit 5
10
O
DGT4
Digit 4
11
-
NC
(Not used)
12
O
DGT3
Digit 3
13
O
DGT2
Digit 2
14
O
DGT1
Digit 1
15
O
DGT0
Digit 0
16
I
VPP
-30V
17
-
NC
(Not used)
18
I
VDD
+5V
19
I
OSC1
X In
20
O
OSC2
X Out
21
-
VSS
Ground
22
I
NCS
IC6303 cs(L)
23
I
SCK
Serial clock 1
24
I
SDI
Serial data 1
25
-
SDO
(Not used)
26
-
KEY IN0
(Not used)
27
-
KEY IN1
(Not used)
28
-
KEY IN2
(Not used)
29
-
KEY IN3
(Not used)
30
-
KEY IN4
(Not used)
31
O
SEG0
Segment 0
32
O
SEG1
Segment 1
33
O
SEG2
Segment 2
34
O
SEG3
Segment 3
35
O
SEG4
Segment 4
36
O
SEG5
Segment 5
37
O
SEG6
Segment 6
38
O
SEG7
Segment 7
39
O
SEG8
Segment 8
40
O
SEG9
Segment 9
41
O
SEG10
Segment 10
42
O
SEG11
Segment 11
43
O
DGT15/SEG12
Digit 15/Segment 12
44
O
DGT14/SEG13
Digit 14/Segment 13
MAIN III (OPERATION) SCHEMATIC DIAGRAM
COMPARISON CHART OF
MODELS & MARKS
MODEL
MARK
PV-D4734S
A
PV-D4744
B
PV-D4744S
C
PV-D4754S
D
PV-D4734S-K
E
PV-D4744S-K
F
PV-D4754S-K
G
Not Used
PT
LINK TO VOLTAGE CHART
LSJB2154
PV-D4754S/PV-D4754S-K
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