5-1. BLOCK DIAGRAMS (3)
IC0001
NVM MEMORY
7
6
5
CN001
A3
SCL
B3
SDA
A4
LED
B4
SIRCS
AGC
A5
B5
MODE 3
B6
OVP
A7
GROUP DELAY
B7
OCP
A8
COINCIDENCE
MAIN RY
B8
MAIN RELAY DRIVER Q0002
A9
DGC RY
DEGAUSING COIL RELAY
DRIVER Q0003
B10
B TEXT
TO A BOARD
CN0101
B11
G TEXT
A12
RESET AUDIO
B12
R TEXT
A13
AUDIO MUTE
D0001
B13
FS 100
A15
AV LINK
A14
MODE 1
B15
MODE 2
B16
LINE MUTE
A17
H SYNC
B17
V SYNC
A19
TXT VIDEO
B19
RESET 100
A20
KEY
B20
12C DISABLE
12C SWITCH
(CONNECT 12C BUS 0
AND BUS 1 TOGETHER)
Q0007, Q0008
DISABLE
DRIVER
Q0011
12C SWITCH
(CONNECT 12C BUS 0
AND BUS 1 TOGETHER)
Q0009, Q0010
CN7442
VM AMPLIFIER
VM AMPLIFIER
VM
1
BUFFER
BUFFER
Q7408, Q7409
Q7400, Q7401
TO A BOARD
4
QP (-)
CN7000
5
QP (+)
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IC0004
COMPARATOR
(AV-LINK CIRCUIT)
1
8
2
7
3
6
4
5
IC0003
RESET CIRCUIT
RESET AND SWITCH
3
Q0012, Q0013
IC0002
MICRO CONTROLLER
83
SCL 1
NVM WL*
98
84
SDA 1
RESET
73
IC0005
28
LED
AV LINK OUT
78
SRAM
(TELETEXT PAGES STORAGE)
76
SIRCS
AV LINK IN
79
A(0)
A(0)
6
AGC
49
20
A(1)
A(1)
22
AGC
40
19
A(2)
A(2)
93
MODE 3 (1)
39
18
A(3)
A(3)
94
MODE 3 (2)
38
17
A(4)
A(4)
29
OVP/OCP
27
16
A(5)
A(5)
80
GROUP DELAY
26
15
A(6)
A(6)
24
OCP FLAG
23
14
A(7)
A(7)
59
COINDIDENCE
15
13
A(8)
A(8)
67
3
17
MAIN RY
A(9)
A(9)
66
2
A(10)
A(10)
65
31
16
DGC RY/AC ON-OFF
A(11)
A(11)
64
1
A(12)
A(12)
37
12
46
B TEXT
A(13)
A(13)
36
4
47
G TEXT
A(14)
A(14)
8
11
25
RESET AUDIO
A(15)
A(15)
33
7
48
R TEXT
A(16)
A(16)
51
10
13
AUDIO MUTE
A(17)
A(17)
RD*
50
9
43
COR*
WR*
9
32
10
5
D(0)
D(0)
52 VDS
85
21
D(1)
D(1)
4
MODE 1
86
22
D(2)
D(2)
2
MODE 2
87
23
D(3)
D(3)
18
MUTE LINE
88
25
D(4)
D(4)
53
H SYNC
89
26
D(5)
D(5)
55
V SYNC
90
27
D(6)
D(6)
32
TXT VIDEO
91
28
D(7)
D(7)
96
RESET 100
92
29
5
KEY
97
12C DISABLE
82 SDA 0
81 SCL 0
71
XTAL OUT
M (
)
X0001
70
XTAL IN
MICRO PROCESSOR
CN7444
QP (-)
1
VM AMPLIFIER
VM AMPLIFIER
VM AMPLIFIER
BUFFER
BUFFER
BUFFER
QP (-)
2
Q7402
Q7403
Q7406
QP (+)
3
QP (+)
4
VM AMPLIFIER
VM AMPLIFIER
VM AMPLIFIER
VM
7
BUFFER
BUFFER
BUFFER
Q7404
Q7405
Q7407
VM
8
VM (
)
VELOCITY
MODULATION
5-2. CIRCUIT BOARD LOCATION
VM
VM Board
CVM Board
H6 Board
H
A
F1 Board
D1
5-3. SCHEMATIC DIAGRAMS AND
PRINTED WIRING BOARDS
Note :
•
All capacitors are in µF unless otherwise noted.
•
pF : µµF 50WV or less are not indicated except for
electrolytic types.
•
Indication of resistance, which does not have one for
rating electrical power, is as follows.
Pitch : 5mm
Electrical power rating : 1/4W
•
Chip resistors are 1/10W
•
All resistors are in ohms.
k = 1000 ohms, M = 1000,000 ohms
•
•
•
•
•
All variable and adjustable resistors have
characteristic curve B, unless otherwise noted.
•
All voltages are in Volts.
•
Readings are taken with a 10Mohm digital mutimeter.
•
Readings are taken with a color bar input signal.
•
Voltage variations may be noted due to normal production
tolerences.
•
•
•
•
•
QP-
QP+
VM
NECK ASSY
- 26 -
Reference Information
RESISTOR
C
C Board
C
N
M Board
D Board
J
S1 Board
A2
COIL
CAPACITOR
A1
D2
A
A Board
D
A Board
G Board
: nonflammable resistor.
: fusible resistor.
: internal component.
: panel designation or adjustment for repair.
: B + bus.
: B - bus.
: RF signal path.
: earth - ground.
: earth - chassis.
RN
: METAL FILM
RC
: SOLID
FPRD
: NON FLAMMABLE CARBON
FUSE
: NON FLAMMABLE FUSIBLE
RS
: NON FLAMMABLE METAL OXIDE
RB
: NON FLAMMABLE CEMENT
RW
: NON FLAMMABLE WIREWOUND
: ADJUSTMENT RESISTOR
LF-8L
: MICRO INDUCTOR
TA
: TANTALUM
PS
: STYROL
PP
: POLYPROPYLENE
PT
: MYLAR
MPS
: METALIZED POLYESTER
MPP
: METALIZED POLYPROPYLENE
ALB
: BIPOLAR
ALT
: HIGH TEMPERATURE
ALR
: HIGH RIPPLE
Note :
The components identified by shading
and marked
are critical for safety.
Replace only with the part numbers
specified in the parts list.
Note :
Les composants identifiés par une trame et
par une marque
sont d'une importance
critique pour la sécurité. Ne les remplacer
que par des pièces de numéro spécifié.
specified.