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5-1. BLOCK DIAGRAMS (3)
IC0001
NVM MEMORY
7
6
5
CN001
A3
SCL
B3
SDA
A4
LED
SIRCS
B4
A5
AGC
B5
MODE 3
B6
OVP
A7
GROUP DELAY
B7
OCP
A8
COINCIDENCE
B8
MAIN RY
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
1
VM
BUFFER
BUFFER
Q7408, Q7409
Q7400, Q7401
TO A BOARD
4
QP (-)
CN7000
5
QP (+)
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
X0001
M (
)
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
•
: nonflammable resistor.
•
: fusible resistor.
•
: internal component.
•
: panel designation or adjustment for repair.
•
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.
•
: B + bus.
•
: B - bus.
•
: RF signal path.
•
: earth - ground.
•
: earth - chassis.
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
Note :
Note :
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
The components identified by shading
and marked
are critical for safety.
Replace only with the part numbers
specified in the parts list.
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.
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