Circuit Boards Location; Schematic Diagram Information - Sony TRINITRON KV-21FS140 Service Manual

4-2. CIRCUIT BOARDS LOCATION

4-3.

SCHEMATIC DIAGRAM INFORMATION

Note:
All capacitors are in µF unless otherwise noted.
•
• All electrolytic capacitors are rated at 50V unless otherwise
noted.
• All resistors are in ohms.
kΩ = 1000Ω, MΩ = 1000kΩ
• Indication of resistance which does not have rating
electrical power is as follows.
Pitch: 5 mm
Rating electrical power 1/4W (CHIP: 1/10W)
• : nonflammable resistor.
• : fusible resistor
• ¢ : internal component.
• : panel designation or adjustment for repair.
• All variable and adjustable resistors have characteristic curve B
unless otherwise noted.
• Readings are taken with a color-bar signal input.
no mark : Common
( ) : PAL
[ ] : NTSC 3.58
• Readings are taken with a 10 MΩ digital multimeter.
• Voltage are dc with respect to ground unless otherwise
noted.
• Voltage variations may be noted due to normal
production tolerances.
• All voltage are in Volt.
✽
• : Cannot be measured.
• Circled numbers are waveform references.
• : B +bus.
• : B –bus.
k
• : signal path.
Note: The reference number which starts with Wxxx
(eg: W003) indicates a wire to wire connection.
Note: Components marked as XX are not fitted on this
model.
C Board
A Board
Reference information
RESISTOR : RN
: RC
: FPRD
: FUSE
: RS
: RB
: RW
: ✽
COIL : LF-8L
CAPACITOR : TA
: PS
: PP
: PT
: MPS
: MPP
: ALB
: ALT
: ALR
Note: The component identified by shading and
mark ! are critical for safety. Replace only with
part number specified.
Note: "A" board schematic diagram is divided into 7 blocks.
Each block is named by its function and block "number".
eg: Processor (Block 001)
Joint connection between boards can be identified using
the block number followed by the grid's guide.
eg: -<PWR-OFF MUTE
002 : 4E
Meaning: Block 001 joint "PWR-OFF MUTE" is connected
to Block 002 joint "PWR-OFF MUTE" located at grid 4E.
– 31 –
KV-21FS140
METAL FILM
SOLID
NONFLAMMABLE CARBON
NONFLAMMABLE FUSIBLE
NONFLAMMABLE METAL
OXIDE
NONFLAMMABLE CEMENT
NONFLAMMABLE
WIREWOUND
ADJUSTMENT RESISTOR
MICRO INDUCTOR
TANTALUM
STYROL
POLYPROPYLENE
MYLAR
METALIZED POLYESTER
METALIZED POLYPROPYLENE
BIPOLAR
HIGH TEMPERATURE
HIGH RIPPLE
RM-YA005