TX-8255
SCHEMATIC DIAGRAMS-3
DISPLAY SECTION
TX-8255
<Note>
NC = No mount of parts.
SD-Z : XY
Location of connected terminal in schematic diagrams.
SD-Z = Schematic diagrams-Z. X = A to H, Y = 1 to 5.
+4.9V
THE COMPONENTS IDENTIFIED BY MARK ARE CRITICAL FOR SAFETY
REPLACE ONLY WITH PART NUMBER SPECIFIED.
VOLTAGE (MEASURED WITH VOLTMETER) IS DC VOLTAGE.(NO INPUT SIGNAL).
ALL PNP TRANSISTORS ARE EQUIVALENT TO 2SA1015-GR UNLESS OTHERWISE NOTED.
ALL NPN TRANSISTORS ARE EQUIVALENT TO 2SC1815-GR UNLESS OTHERWISE NOTED.
ALL DIODES ARE EQUIVALENT TO 1SS133 UNLESS OTHERWISE NOTED.
ELECTROLYTIC CAPACITORS ( ) ARE IN uF/WV.
ALL CAPACITORS ARE IN pF/50WV UNLESS OTHERWISE NOTED.
EX) 030- 3pF 330- 33pF 331- 330pF 333- 0.033uF
ALL RESISTORS ARE IN OHMS 1/4WATTS UNLESS OTHERWISE NOTED.
THE THICK LINES ON PC BOARD ARE THE PRINTING SIDE OF THE PARTS.
EX) PRINTING SIDE
CIRCUIT IS SUBJECT TO CHANGE FOR IMPROVEMENT.
!
NOTE
FLDRST
FLDSDO
FLDCS
FLDCLK
IRIN
IROUT
MPUGND
+5VCPU
MPUGND
+5VDIS
REMIN
KEY0
KEY1
KEY2
KEY3
FLDCS
FLDSDO
FLDCLK
KEYINT0
KEYINT1
KEYINT2
KEYINT3
LEDSTBY
LEDPURE
FLDRST
MEMORY
TUNING
MODE
ON/
STANDBY
TUNING
DOWN
TUNING UP
DISPLAY
SPEAKERS
A
SPEAKERS
B
6 PQR
6 MNO
4 JKL
3 GHI
2 DEF
1 ABC
DIRECT
TUNING
DIMMER
/ SACN
CHARACTER
RT/PTY/TP
0_/
AM
FM
TAPE 1
TAPE 2
MONITOR
LINE 2
LINE 1
/ DVD
To NAAF-8886
SD-1 : D5
NADIS-8877
9 YZ-
8 VWX
7 STU
PHONO
CD
NC
To NADG-8876
SD-2 : E5
C852
N
C
L852
022K
C858
101J
C856 104Z
R883
27K
R882
220
R881
220
R880
3.3K
R879
3.3K
C854
223Z
C853
223Z
C860
101J
C864 223Z
C863
101J
C862
101J
C861
101J
R884
100K
Q851
M66005
49
49 : SEG2
50
SEG1
51
SEG0
52
VCC2
53
DIG15/SEG39
54
DIG14/SEG38
55
DIG13/SEG37
56
DIG12/SEG36
57
DIG11
58
DIG10
59
DIG9
60
DIG8
61
DIG7
62
DIG6
63
DIG5
64
64 : DIG4
1
DIG03
2
DIG02
3
DIG01
4
DIG00
5
_RESET
6
_CS
7
SCK
8
SDATA
9
P1
10
P0
11
VCC1
12
XOUT
13
XIN
14
VSS
15
SEG35
16
SEG34
17
SEG33 : 17
18
SEG32 : 18
19
SEG31
20
SEG30
21
SEG29
22
SEG28
23
SEG27
24
VP
25
SEG26
26
SEG25
27
SEG24
28
SEG23
29
SEG22
30
SEG21
31
SEG20 : 31
32
SEG19 : 32
33
SEG18
34
SEG17
35
SEG16
36
SEG15
37
SEG14
38
SEG13
39
SEG12
40
SEG11
41
SEG10
42
SEG9
43
SEG8
44
SEG7
45
SEG6
46
SEG5
47
SEG4
48
SEG3
R876
330
R855
330
R862
330
R869
330
R877
470
R856
470
R863
470
R870
470
R878
560
R857
560
R864
560
R871
560
R851
820
R858
820
R865
820
R872
820
R852
1.2K
R859
1.2K
R866
1.2K
R873
1.2K
R853
2.2K
R860
2.2K
R874
2.2K
C857 100/16
+
Q853
2SC2712-GR
2
1
3
S880
S881
S858
S857
S856
S864
S865
S866
S867
S875
S874
S873
S872
S882
S851
S859
S852
S868
S876
S877
S869
S861
S853
S860
R867
2.2K
JL716B
1
2
3
C866
100/16
R886
220
D851
MTZJ8.2C
C870
223Z
C869 223Z
C868 223Z
C867
223Z
C865
33/50
+
R885
220
Q852
16-BT-128GNK
1
F21
2
F22
5
P35
6
P34
7
P33
8
P32
9
P31
10
P30
11
P29
12
P28
13
P27
14
P26
15
P25
16
P24
17
P23
18
P22
19
P21
20
P20
21
P19
22
P18
23
P17
24
P16
25
P15
26
P14
27
P13
28
P12
29
P11
30
P10
31
P9
32
P8
33
P7
34
P6
35
P5
36
P4
37
P3
38
P2
39
P1
40
16G
41
15G
42
14G
43
13G
44
12G
45
11G
46
10G
47
9G
48
8G
49
7G
50
6G
51
5G
52
4G
53
3G
54
2G
55
1G
58
F11
59
F12
D853
SLI-343URC-TE7
C851
NC
P715B
24
20
15
10
5
1
R891
2.2K
Q854
RN1441
R887
100
C872
NC
C871 102J
R888
1K
L857 470M
R854
3.9K
R861
3.9K
R875
3.9K
R889
12K
C873
100/16
+
U851
S854
S862
S878
S879
S883
S863
S855
S870
R892
3.9K
S884
D854
SIR-34ST3F
D852
SEL2E10C
R890
100
FL DRIVER
FL TUBE
U02
DISPLAY PC BOARD
NC
STANDBY
MICROPROCESSOR PCB
AMPLIFIER PCB
NC
+5V
+4.9V
+5V
+5V
+5V
-30.7V
-30.7V
A
1
2
3
4
B
C
D
E
