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Circuit Boards Location; Schematic Diagrams - Sony KP-XR432K90 Service Manual

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6-2. CIRCUIT BOARDS LOCATION

HB
CR
HC
HA
CG
A
CB
FA
G

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
/
W
4
: nonflammable resistor.
: fusible resistor.
: internal component.
: panel designation and adjustment for repair.
• All variable and adjustable resistors have characteristic curve 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.
• When replacing components identified by
, make the necessary adjustments
indicated. If results do not meet the specified value, change the component
identified by
and repeat the adjustment until the specified value is achieved.
(Refer to R536,R545 and C517 adjustment on Page 23.)
• When replacing the part in below table, be sure to perform the related adjustment.
Adjustment (
Part replaced (
)
C517, C521, C522, IC654, L504, T502,
HV Regurator
T504, DY, A board, G board
(C517)
C516, C536, D506, D507, D522, IC206,
HV HOLD-DOWN
IC502, IC654, L504, R511, R522, R536,
(R536, R545)
R538, R545, R548, R584, T502, T504,
DY, A board, G board
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.
• Readings are taken with a NTSC color-bar signal input.
• Readings are taken with a 10MΩ digital 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.
• 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 and G 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
Terminal name of semiconductors in silk screen
printed circuit (
*
)
Device
Printed symbol
Terminal name
Collector
1
Transistor
Base
Emitter
Collector
2
Transistor
Base
Emitter
Cathode
3
Diode
Anode
Cathode
4
Diode
Anode
(NC)
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
!™
Diode
Anode
Anode
Cathode
Anode
Transistor
Source
Drain
(FET)
Gate
G
Transistor
Source
Drain
(FET)
Gate
D
Source
Transistor
!∞
Drain
(FET)
Gate
S
Emitter
Transistor
Collector
Base
C2
B1 E1
Transistor
B1
E2
B2 C1
C1
B2 E2
!•
Transistor
E1
B1 C2
B1
C1
B2 E2
Transistor
E1
B1 C2
C1
B2 E2
Transistor
B1
E1
B1 C2
E2
B1 E1
Transistor
B1
C2
C1(B2)
(B2)
B1
E1
E2
@™
Transistor
B1
C1
C2
(B2)
E2
E1
B1
Transistor
B1
C2
C1
Discrete semiconductot
(Chip semiconductors that are not actually used are included.)
– 33 –
KP-XR432K90/XR432N90
Circuit
D
D
G
S
S
D
G
G
S
C1
C2
B2
E1
E2
C1
C2
B2
E1
E2
E1
E2
B2
C1
C2
C1(B2)
C2
E2
E2
E1(B2)
E2
C1
C2
E1(B2)
C2
C1
C2
Ver.1.6
RM-Y906K
RM-Y906

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