Circuit Boards Location Ec; Schematic Diagrams And Printed Wiring Boards - Sony TRINITRON KV-27EXR20 Service Manual

6-2. CIRCUIT BOARDS LOCATION
6-3. SCHEMATIC DIAGRAMS AND
PRINTED WIRING BOARDS
-Conductor Side-
Note:
* All capacitors are in uF unless otherwise noted. pF: ypF
50WV or less are not indicated except for electrolytic and
tantalums.
* All electrolytics are in 50V unless otherwise specified.
¢ All resistors are in ohms.
kQ=1000Q, MQ=1000k2
* Indication of resistance, which does not have one for rating
electrical power, is as follows.
Pitch: 5 mm
Rating electrical power 1/4W
¢ Chips resistors are 1/10W.
¢ 4}: nonflammable resistor.
¢ /\: internal component.
+ (1: panel designation, and adjustment for repair.
* Allvariable and adjustable resistors have characteristic curve
B, unless otherwise noted.
¢ _| : earth-ground.
* 77 : earth-chassis.
* The components identified by D4 in this manual 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 (4 mark the
necessary adjustments indicated. If results do not meet the
specified value, change the component identified by b4 and
repeat the adjustment until the specified value is achieved.
(Refer to R570 and R559 adjustment on page 22-25)
When replacing the part in below table, be sure to parform the
related adjustment.
o
KV-27EXR20/27EXR25
RM-Y103__ RM-Y104
PM501, Q607, Q608, R559, R559
R627, R628, R629 Hold-down
R570
Hold-down
Reference information
RESISTOR :RN METAL FILM
>RC SOLID
:FPRD NONFLAMMABLE CARBON
:FUSE NONFLAMMABLE FUSIBLE
:RS NONFLAMMABLE METAL OXIDE
>: RB NONFLAMMABLE CEMENT
: RW NONFLAMMABLE WIREWOUND
x ADJUSTMENT RESISTOR
IC653, PM501, Q607, Q608,
D531, C545, R570, R591,
R627, R628, R675, T500
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
+ Readings are taken with a color-bar signal input.
* Readings are taken with a 10 MQ digital multimeter.
¢ Voltage are dc with respect to ground unless otherwise noted.
¢ Voltage variations may be noted due to normal production
tolerances.
* All voltages are in V.
* Circuled numbers are waveform references.
° B+ bus.
* amenn: B— bus.
° — seeiiee. : Signal path.
he components identified by shading and mark A\ are critical e
ce
es composants identifiés par un tramé et une marque A
ont critiques pour la sécurité. Ne les remplacer que par une
iéce portant le numéro spécifié Ea
sa6GQen.
KV-27EXR20/27EXR25
RM-Y103 RM-Y104
TUNER, VIF, SIF, CONTROLLER, MEMORY, Y/C JUNGLE,
H OUT, V OUT, X RAYS PRO, MTS DECODE,
POWER SUPPLY, PIN CORR
— A Board —