KP-43HT20/53HS20/53HS30/61HS20/61HS30
RM-Y908RM-Y908RM-Y908RM-Y908
– 44 –
RM-Y908
6-2. CIRCUIT BOARDS LOCATION
6-3. SCHEMATIC DIAGRAMS
Note:
• Capacitors without voltage indication are all 50V.
• All resistors are in ohms.
kΩ=1000Ω, MΩ=1000kΩ
• Indication of resistance, which dose not have one for rating electrical power, is
as follows.
Pitch : 5mm
Rating electrical power : 1/4 W
•: nonflammable resistor.
•: fusible resistor.
• : internal component.
•: panel designation and adjustment for repair.
• Allvariableand adjustable resistors havecharacteristiccurve B, unless otherwise
noted.
•: 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.
• Whenreplacing components identifiedby ,make the necessary adjustments
indicated. If results do not meet the specified value, change the component
identifiedby and repeat theadjustment until the specified valueisachieved.
(Refer toVR8001 and VR8002 adjustment on Page 30.)
• Readings are taken with a NTSC color-bar signal input.
• Readings are taken with a 10MΩdigital multimeter.
• Voltages are dc with respect to ground unless otherwise noted.
• Voltage variations may be noted due to normal production tolerances.
• All voltages are in V.
*: Measurement impossibillity.
Note:The symbol display is on the component slde.
The components identified by shading and mark
are critical for safety. Replace only with part number
specified.
The symbol indicate fast operating fuse.
Replace only with fuse of same rating as maked.
Note: Les composants identifiés per un tramé et une marque
sont critiques pour la sécurité. Ne les remplacer
que par une piéce portant le numéro spécifié.
Le symbole indique une fusible a action rapide.
Doit etre remplacee par une fusible de meme yaleur,
comme maque.
S
CG
CR
G
A
CB
H2 H3
H1
H4
V
V
U
DAD B
G
D
S
B1 E1
C2
B2 C1
E2
2
3
4
5
6
7
8
9
0
!¡
!™
!¢
!§
!¶
!•
–
1
G
D
S
B2 E2
C1
B1 C2
E1
B2 E2
C1
B1 C2
E1
B2 E2
C1
B1 C2
E1
!ª
B1 E1
E2
C1(B2)
C2
@º
B1
E2
C1
C2
@™
@£
(B2)
E1
(B2)
E1
E2
B1
C2
C1
@¡
B1
E1
C2
B2
C1
E2
G
SS
D
G
D
B1
E1
C2
B2
C1
E2
B1
E2
C2C1(B2)
E2
B1
C1
C2E1(B2)
C2
B1
C1
E2E1(B2)
C2
B1
C1
E2
B2
E1
C2
Ver.1.5
Transistor
(FET)
Transistor
Transistor
Transistor
Transistor
Transistor
Transistor
Transistor
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)
!∞
Emitter
Collector
Base
Transistor
Source
Gate
Drain
Cathode
Anode
Anode Cathode
Anode
Anode
•Circled numbers are waveform references.
•: B+ bus.
•: B–bus.
•: signal path.(RF)
Reference information
RESISTOR : RN METAL FILM
: RC SOLID
: FPRD NONFLAMMABLE CARBON
: FUSE NONFLAMMABLE FUSIBLE
: RW NONFLAMMABLE WIREWOUND
: RS NONFLAMMABLE METAL OXIDE
: RB NONFLAMMABLE CEMENT
:ADJUSTMENT RESISTOR
COIL : LF-8L MICRO INDUCTOR
CAPACITOR :TA TANTALUM
: PS STYROL
: PP POLYPROPYLENE
: PT MYLAR
: MPS METALIZED POLYESTER
: MPP METALIZED POLYPROPYLENE
: ALB BIPOLAR
: ALT HIGH TEMPERATURE
: ALR HIGH RIPPLE
•Divided schematic diagram
Schematic diagrams of A, AD, B, D, G, and U boards are divided into several
pieces.Information to where the line is to be connected is printed
at the end of each.
For example, [ TO A1/5,A2/5_1 ] means the line is connected to
Ref.No.1 of A(1/5) and A(2/5) schematic diagrams.
TO A1/5,A2/5_1
Ref. No.
Name of divided schematic diagram