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5-2. CIRCUIT BOARDS LOCATION
A
D
5-5
5-3. 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.
F
•
: fusible resistor.
¢
•
: 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.
• 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.
[
• 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.
[
Part Replaced (
)
HV ADJ
RV501
]
Part Replaced (
)
HV Regulator
D board IC501, C532, C534,
Circuit Check
C539, C553, C554,
C555, C556, C558,
C561, R540, R541,
R542, R544, R564,
R567, R568, RV501,
T501 (FBT)
HV Protector
D board IC607, IC901, D515,
Circuit Check
D517, C540, C542,
C544, R510, R543
R547, R549, R552,
R595,
T501 (FBT)
Beam Current
D board IC605, IC607, IC901,
Protector Circuit
C535, C541, R545,
Check
R546, R548, R550,
R596, R934,
T501 (FBT)
• Divided circuit diagram
One sheet of D board circuit diagram is divided into four
sheets, each having the code D-a to D-d . For example, the
destination ab1 on the D-a sheet is connected to ab1 on the
D-b sheet.
a
b
1
Ref. No.
Circuit diagram division code
Terminal name of semiconductors in silk screen
printed circuit (
*
)
Device
Printed symbol
Terminal name
Circuit
Collector
1
Transistor
Base
Emitter
Collector
2
Transistor
Base
Emitter
Cathode
3
Diode
Anode
Cathode
4
Diode
(NC)
Anode
Cathode
5
Diode
Anode
(NC)
Common
6
Diode
Anode
Cathode
Common
7
Diode
Anode
Cathode
Common
8
Diode
Anode
Anode
Common
9
Diode
Anode
Anode
Common
0
Diode
Cathode
Cathode
Common
!¡
Diode
Cathode
Cathode
Anode
Cathode
!™
Anode
Diode
Anode
Anode
Cathode
Source
Transistor
!£
Drain
(FET)
Gate
D
G
G
Source
Transistor
!¢
S
Drain
(FET)
Gate
D
D
Source
Transistor
!∞
G
Drain
(FET)
Gate
S
S
Emitter
!§
Transistor
Collector
Base
–
Discrete semiconductot
(Chip semiconductors that are not actually used are included.)
Note: The components identified by shading and mark
! are critical for safety. Replace only with part
number specified.
Note: Les composants identifiés par un tramé et une
marque ! sont critiques pour la sécurité. Ne les
remplacer que par une pièce portant le numéro
spécifié.
5-6
D
S
G
Ver.1.6
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