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5-4. SCHEMATIC DIAGRAMS AND PRINTED
WIRING BOARDS
Note:
• All capacitors are in µF unless otherwise noted. (pF: µµF)
Capacitors without voltage indication are all 50 V.
• Indication of resistance, which does not have one for rating
electrical power, is as follows.
Pitch: 5 mm
Rating electrical power 1/4 W (CHIP : 1/10 W)
• All resistors are in ohms.
f
•
: nonflammable resistor.
Ï
•
: fusible resistor.
f
•
: internal component.
p
•
: panel designation, and adjustment for repair.
• All variable and adjustable resistors have characteristic curve B,
unless otherwise noted.
e
•
: earth-ground.
E
•
: earth-chassis.
[
• The components identified by
in this basic schematic diagram
have been carefully factory-selected for each set in order to
satisfy regulations regarding X-ray radiation.
Should replacement be required, replace only with the value
originally used.
]
• When replacing components identified by
, make the
necessary adjustments indicated. (See page 3-1)
• When replacing the part in below table, be sure to perform the
related adjustment.
Note: The components identified by shading and
mark 0 are critical for safety. Replace only
with part number specified.
Note: Les composants identifiés per un tramé et
une marque 0 sont critiques pour la
sécurité. Ne les remplacer que par une pièce
portant le numéro spécifié.
• All voltages are in V.
• Readings are taken with a 10 MΩ digital multimeter.
• Readings are taken with a color-bar signal input.
• Voltage variations may be noted due to normal production
tolerances.
•
: Can not be measured.
*
• Circled numbers are waveform references.
s
•
: B + bus.
S
•
: B – bus.
• Divided circuit diagram
One sheet of D board circuit diagram is divided into three sheets,
each having the code D-a to D-c. For example, the destination
ab1 on the code D-a sheet is connected to ab1 on the D-b sheet.
a b 1
Ref. No.
Circuit diagram division code
Part Replaced ([)
HV ADJ
RV901
Part Replaced (])
HV Regulator
D Board
T901 (FBT), IC901,
Circuit Check
R924, R925, RV901
• Mounted D board
HV Protector
D Board
T901 (FBT), R917, R918,
Circuit Check
R923, R920, R919, R1004,
C920, D911, D912
• Mounted D board
Beam Current
D Board
R933, R932, R921, R1006,
Protector Circuit
D915, D917, IC901, T901 (FBT)
• Mounted D board
Check
Terminal name of semiconductors in silk screen
printed circuit (
)
*
Circuit
Device
Printed symbol
Terminal name
Collector
1
Transistor
Base
Emitter
Collector
Transistor
2
Emitter
Base
Cathode
3
Diode
Anode
Cathode
4
Diode
Anode
(NC)
Cathode
5
Diode
Anode
(NC)
Common
Diode
6
Anode
Cathode
Common
7
Diode
Anode
Cathode
Common
8
Diode
Anode
Anode
Common
9
Diode
Anode
Anode
Common
0
Diode
Cathode
Cathode
Common
qa
Diode
Cathode
Cathode
Anode
Cathode
Diode
Anode
qs
Anode
Cathode
Anode
Source
Transistor
Drain
qd
(FET)
Gate
D
G
G
Source
Transistor
S
qf
Drain
(FET)
Gate
D
D
Source
Transistor
qg
Drain
G
(FET)
Gate
S
S
Emitter
Collector
qh
Transistor
Base
–
Discrete semiconductot
(Chip semiconductors that are not actually used are included.)
5-7
— A BOARD —
1
A
B
• A BOARD SEMICONDUCTOR LOCATION
IC
DIODE
IC001
B-2
IC002
B-1
D002
B-3
IC003
A-4
D004
B-3
IC004
A-1
D005
B-4
IC005
A-4
D007
B-4
IC006
B-2
D008
B-4
IC007
B-4
D010
B-4
IC008
B-3
D011
B-4
IC009
A-3
D012
B-4
D014
A-4
D016
B-4
TRANSISTOR
D
D019
B-4
D023
A-3
*
S
D024
A-3
Q001
A-4
–
D025
B-3
1
Q002
B-2
D101
B-3
G
1
Q003
B-2
D104
B-1
1
Q004
B-3
D105
B-1
1
Q005
B-3
D106
A-1
1
Q006
A-3
D108
A-1
: Refer to Terminal name of semiconductors
*
Ver.1.5
in silk screen printed circuit (see page 5-7)
2
3
NOTE:
The circuit indicated as left contains high voltage of over
600 Vp-p. Care must be paid to prevent an electric shock in
inspection or repairing.
3
D109
A-1
7
D111
B-3
*
7
D201
B-3
3
–
D204
B-1
3
–
D205
B-1
7
3
D206
A-1
7
–
D208
A-1
3
–
D209
A-1
7
–
D211
B-3
–
7
D301
B-3
7
3
D304
B-1
–
3
D305
B-1
3
–
D306
A-1
–
7
D308
A-1
3
–
D309
A-1
7
–
D311
B-3
3
–
D409
A-1
7
3
3
CRYSTAL
3
7
X001
B-3
5-8
A
VIDEO AMP
RGB OUT
4
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