Schematic Diagrams And Printed Wiring Boards - Conductor Side - Sony TRINITRON KV-20EXR20 Service Manual

6-2. CIRCUIT BOARDS LOCATION
KV-20EXR20 KV-20EXR20
RM-Y103 RM-Y103
e@ When replacing components identified by [@ mark the
necessary adjustments indicated. If results do not meet the
specified value, change the component identified by $4 and
repeat the adjustment until the specified value is achieved.
(Refer to R570, R559 adjustment on page 19 — 21)
When replacing the part in below table, be sure to perform the
related adjustment.
Part replaced ( (4) Adjustment (b4)
PCM501, Q607, Q608, R559, R559
R627, R628, R629 Hold-down
1C653, PM501, Q607, Q608, D531, R570
C545, C627, R570, R591, R627, Hold-dewn
R628, R675, T500
Reference information
RESISTOR : RN METAL FILM
: RC SOLID
: FPRD NONFLAMMABLE CARBON
: FUSE NONFLAMMABLE FUSIBLE
: RS NONFLAMMABLE METAL OXIDE
: RB NONFLAMMABLE CEMENT
: RW NONFLAMMABLE WIREWOUND
7% ADJUSTMENT RESISTOR
COIL : LF-8L MICRO INDUCTOR
CAPACITOR : TA TANTALUM
: PS STYROL
: PP POLYPROPYLENE
6-3. SCHEMATIC DIAGRAMS AND Fs Bere eae ete
PRINTED WIRING BOARDS - Conductor Side — !MPP METALIZED POLYPROPYLENE
: ALB BIPOLAR
[Meh : ALT HIGH TEMPERATURE
e All capacitors are in uF unless otherwise noted. pF: pyF = ALR HIGH RIPPLE
50 WV or less are not indicated except for electrolytic and . Readings are taken with a color-bar signal input.
(EMEA: ° Readings are taken with a 10MQ digital maltimeter.
© Allresistors are in ohms. ° Voltage are de with respect to ground unless
kQ =10002 , MQ =1000KQ othenvine noted.
e Indication of resistance, which does not have one for rating rs Voltage varietions may be neted due to normal
electrical power, is as follows. production tolerances.
Pitch: 5 mm ° All voltages are in V.
Rating electrical power %4 W ° Circuled numbers are waveform references.
@ sume ; B+ bus.
e Wel : nonflammable resistor. 6 CS ecticth
e A: internal component.
e (____]: panel designation, or adjustment for repair.
e All variable and adjustable resistors have characteristic curve
B, unless otherwise noted.
° alle ¥ earth-ground.
e wr : earth-chassis.
e + : no mounted.
e The components identified by 64 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.
Note: The components identified by shading and mark
A\ are critical for safety. Replace only with
part number specified.
_ Note: Les composants identifiés par une trame et
par une marque /\ sont d'une importance
critique pour la sécurité. Ne les remplacer
que par des piéces de numéro spécifié.
= o7—
KV-20EXR20
RM-Y103
|
KV-20EXR20 |
RM-Y103
A TUNER, VIF, SIF, CONTROLLER, MEMORY, Y/C JUNGLE, H OUT, V OUT,
X RAYS PRO, MTS DECODE, POWER SUPPLY, PIN CORR
— A Board —
A Board
Rody le SO ovu0rFroTmTMmTT
QOnN0Oro0mraamm
Neat clots ste UST: last: ata el
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SEIS ee) Fen Ee)
TNAWVOBrPMIDNNACNDTIVOOY
PPT ae ea Pa
AWWNWQAA=--O0WDDOHRHDO
Pte
TP1
TP2 (MPX)
TP (DET OUT)
TP15
TP82
TP84
TP85
TP87
TP88
TP91
TP92
TP93
TP9S
TP96A
TP96B
TP96C
TP97
TP98
TP99A
@O-uNwWwWAnpWA-UAW
ae
ace Te Gluents ahah sl
MMM™TOMMMMOHO NOT NMAYH
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i
ONMNANAATMNNANADNINWNAIOWIHDADOD
eT eae wh Oy Ie inet ale QL Tape ge Te 3h NAO-H-AORAMH-DA2MMAAYIN
omororonnm
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NN anonoos
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—32-— ; . =
NOTE:
WAVEFORMS A BOARD
'O)
eM,
2.4Vp-p (H )
®
Ww uw L
oO Masty (UM 2)
©
iN
0.6Vp-p (V ) |
2.4Vp-p (H )
©,
ahr oabp bp
ee. eee
3,2¥o-9 CH} 2e2¥o= 5 OF}
oO
i
eovi—ia (C ))
es fit) (tal 9)
r
(hay Tee (f
4.4Vp-p (H )
So tia Onl 3} 110Vp-p (H )
Bosom Cal) 42 Wo=i9 (nl Gi O Wisi om Vine)
c
6.4Vp-p (H )
—_ + +
tid Nii UME
fee |
The circuit indicated as left contains high voltage of over
600 Vp-p. Care must be paid to prevent an electric shock in
inspection or repairing.
Seyi
@ 10
12 Waom CW
whee
rw? Wise (CWE)