4-7
4-8
4-3. SCHEMATIC DIAGRAMS AND PRINTED
WIRING BOARDS
4-2. CIRCUIT BOARDS LOCATION
Note:
•
All capacitors are in
µ
F unless otherwise noted. (pF:
µµ
F)
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 M
Ω
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.
G
D
S
2
3
4
5
6
7
8
9
0
!¡
!™
!¢
–
1
G
D
S
G
S
S
D
G
D
Ver.1.6
Transistor
(FET)
Transistor
Transistor
Discrete semiconductot
(Chip semiconductors that are not actually used are included.)
Diode
Diode
Diode
Diode
Diode
Diode
Diode
Diode
Diode
Diode
Source
Source
Anode
Anode
(NC)
(NC)
Cathode
Anode
Cathode
Common
Cathode
Cathode
Common
Cathode
Cathode
Common
Common
Common
Common
Cathode
Anode
Base
Emitter
Collector
Base
Emitter
Collector
Drain
Gate
Gate
Drain
Device
Printed symbol
Terminal name
Circuit
Terminal name of semiconductors in silk screen
printed circuit ( )
Anode
Anode
Anode
Cathode
Anode
Anode
Cathode
!£
Transistor
(FET)
Transistor
(FET)
!∞
Source
Gate
Drain
Cathode
Anode
Anode
Cathode
Anode
Anode
*
Note: The components identified by shading and mark
!
are critical for safety. Replace only with part
number specified.
Note: Les composants identifiés per un tramé et une
marque
!
sont critiques pour la sécurité. Ne les
remplacer que par une pièce portant le numéro
spécifié.
B
H
U
G
A
DISPLAY
MEDIA ENGINE
•
Divided circuit diagram
One sheet of A, U boards circuit diagrams are divided into two
sheets, each having the code A-P1-
a
to A-P1-
b
, A-P2-
a
to
A-P2-
b
, A-P3-
a
to A-P3-
b
, U-
a
to U-
b
. For example, the
destination ab1 on the A-P1-
a
sheet is connected to ab1 on
the A-P1-
b
sheet.
b
1
a
Ref. No.
Circuit diagram division code