Sony Trinitron PVM-14L3 User manual

SERVICE MANUAL
MODEL DEST.
PVM-14L3 AEP SCC-G62L-A
PVM-14L4 AEP SCO-G62U-A
PVM-20L4 AEP SCC-GE2K-A
MODEL peer, Coase NO.
TRINITRONe COLOR VIDEO MONITOR
SONY.

ASS
TOVIAT WH, V-EABH CT.
BERN, COVIAYVICHRMANERECRE, AR, EMRELTS CBHOAK,
APPR DIES T EMBDET,
FEREAWISKY, P-EAhL-CMY PERG RRHBOATRAC KEW.
A, WARNING
This manual is intended for qualified service personnel only.
To reduce the risk of electric shock, fire or injury, do not perform any servicing other than that
contained in the operating instructions unless you are qualified to do so. Refer all servicing to
qualified service personnel.
A WARNUNG
Die Anleitung ist nur fir qualifiziertes Fachpersonal bestimmt.
Alle Wartungsarbeiten dirfen nur von qualifiziertem Fachpersonal ausgeftihrt werden. Um die
Gefahr eines elektrischen Schlages, Feuergefahr und Verletzungen zu vermeiden, sind bei
Wartungsarbeiten strikt die Angaben in der Anleitung zu befolgen. Andere. als die angegeben
Wartungsarbeiten dirfen nur von Personen ausgefiihrt werden, die eine spezielle Befahigung
dazu besitzen.
A\AVERTISSEMENT
Ce manual est destiné uniquement aux personnes compétentes en charge de l'entretien. Afin
de réduire les risques de décharge électrique, d’incendie ou de blessure n’effectuer que les
réparations indiquées dans le mode d'emploi & moins d’étre qualifié pour en effectuer d'autres.
Pour toute réparation faire appel a une personne compétente uniquement.
WARNINGI!
AN INSULATED TRANSFORMER SHOULD BE USED DURING
ANY SERVICE TO AVOID POSSIBLE SHOCK HAZARD, BE-
CAUSE OF LIVE CHASSIS.
THE CHASSIS OF THIS RECEIVER IS DIRECTLY CONNECTED
TO THE AC POWER LINE.
SAFETY-RELATED COMPONENT WARNING !!
‘COMPONENTS IDENTIFIED BY AAAMARK ON THE SCHEMATIC
DIAGRAMS, EXPLODED VIEWS AND IN THE PARTS LIST ARE
CRITICAL TO SAFE OPERATION, REPLACE THESE COMPO-
NENTS WITH SONY PARTS WHOSE PART NUMBERS APPEAR
AS SHOWN IN THIS MANUAL OR IN SUPPLEMENTS PUB-
LISHED BY SONY.
ATTENTION!!
AFIN D'EVITER TOUT RISQUE D’ELECTROCUTION
PROVENANT D'UN CHASSIS SOUS TENSION, UN
TRANSFORMATEUR D'ISOLEMENT DOIT ETRE UTILISE LORS
DE TOUT DEPANNAGE.
LE CHASSIS DE CE RECEPTEUR EST DIRECTEMENT
RACCORDE A L’ALIMENTATION SECTEUR.
ATTENTION AUX COMPOSANTS RELATIFS A LA
SECURITE!
LES COMPOSANTS IDENTIFIES PAR UNE MAPQUE 4. SUR
LES SCHEMAS DE PRINCIPE, LES VUES EXPLOSEES ET LES
LISTES DE PIECES SONT D'UNE IMPORTANCE CRITIQUE
POUR LA SECURITE DU FONCTIONNEMENT. NE LES
REMPLACER QUE PAR DES COMPOSANTS SONY DONT LE
NUMERO DE PIECE EST iNDIQUE DANS LE PRESENT
MANUEL OU DANS DES SUPPLEMENTS PUBLIES PAR SONY.
PvM-t4La/14L4/2014

Table of Contents
1. Service Informations
1-1.
1-2.
1-3.
1-4-1,
1-4-2,
1-4-3,
1-4-4.
1-4-5,
1-4-6,
1-4-7,
1-4-8,
Board Layout (14 inch)
Disassembly (14 inch)...
1-2-1,
). Removal of Anode Cap...
. G Board Removal (14 inch)
. Speaker Removal (14 inch)
. Service Position (14 inch) ...
Board Layout (20 inch)
i-4, Disassembly (20 inch’
. Removal of Anode Cap...
. G Board Removal (20 inch)
. Picture Tube Removal (20 inch)
. Speaker Removal (20 inch)
}. Service Position (20 inch)
Top Cover Removal (14 inch)
Bezel Assy Removal (14 inch)
H1 Board Removal (14 inch)
H2 Board Removal (14 inch)
J, D1 and D Boards Removal (14 inch)
C Board Removal (14 inch) ...
B Block Assy Removal (14 inch
K, T, B1, M and B Boards Removal (14 inch)
Q Block Removal (14 inch) ....
Picture Tube Removal (14 inch’
Top Cover Removal (20 inch)
Bezel Assy Removal (20 inch:
HA Board Removal (20 inch)
HB Board Removal (20 inch)
J, Di and D Boards Removal (20 inch)
C Board Removal (20 inch)
B Block Removal (20 inch).
K, T, B1, M and B Boards Removal (20 inch) .
Q Block Assy Removal (20 inch)
2. Set-up Adjustment
2-1. Equipment Required.
2-2, Preparations (1) .
2-3. Preparation (2). Initialization ..
2-4. Writing Model Data ..
2-5. Picture Output ...
2-6. Landing Adjustment..
PYMbiaiataLaects

2-7,
2-8.
2-9,
2-10,
2-41,
2-12,
2-13.
2-14,
2-15.
2-16
Convergence Adjustment (1) ....
Deflection Yoke Neck Rotation Adjustment
Convergence Adjustment (2) ..
G2 Adjustment ...
White Balance Adjustment .....
Blue-only White Balance Adjustment ...
SUB BRIGHT, SUB CONTRAST Adjustment (15 K)
SUB BRIGHT, SUB CONTRAST Adjustment (33 K)
White Balance Interference Correction Adjustment
2-15-1. NTSC Composite Adjustment...
2-15-2, PAL Composite Adjustment
2-15-3. COMPONENT Adjustment ..
2-15-4, SDI Adjustment.
2-15-5. HD and SDI Adjustments.
Focus Adjustment...
3. Electrical Adjustments
3-1.
3-2.
3-3.
Equipment Required...
B Board Adjustments ..
3-2-1. Preparations
3-2-2, 15k YPBPR SMPTE (601) Signal Adjustment
3-2-2-1, Black Level Adjustment...
3-2-2-2, CHROMA Leak Adjustment
3-2-2-3. MATRIX Adjustment
3-2-3. 15k YPBPR BETACAM SETUP.
0 Signal Adjustment
3-2-4. 15k YPBPR BETACAM SETUP
7.5 Signal Adjustment
3-2-5. 33k YPBPR SMPTE (709) Signai Adjustment
{Applicable for PYM-D14L5J/D20L5I/14L5/20L5 only)
B1 Board Adjustments
3-3-1. Preparation
3-3-2. Y OUT Level Adjustment (BYPASS Mode)
3-3-3. Clamp Pulse Width Adjustment (NTSC)...
3-3-4. Burst Gate Pulse Width Adjustment (NTSC)
3-3-5. 3.58 FO Adjustment (NTSC)...
3-3-6. Phase Adjustment (NTSC)
3-3-7, Level Adjustment (NTSC)
3-3-8. Burst Gate Pulse Width Adjustment (PAL)
3-3-9, 4.43 FO Adjustment (PAL)
3-3-10, PAL B-Y Phase Adjustment
3-3-1. PAL Phase Adjustment (Normal)
3-3-12, Level Adjustment (PAL).......
3-3-13. Level Adjustment (NTSC 443) .....
PVM-14L9/14L4/2014

P¥Md-14tgr141.¢/20L4
3-3-14. Clamp Pulse Width Adjustment (SECAM)
15. H. Pulse Width Adjustment (SECAM) ...
3-3-16. Level Adjustment (SECAM).
4. Semiconductors
5. Spare Parts
5-1. Notes on Repair Parts .....
5-2. Exploded Views
5-3, Electrical Parts List
6. Block Diagrams
Overall (1/2)
Overall (2/2
Q (42), B (1/5), T (1/2), K
B (2/5)
B G/5)
Q (2/2), B (4/5, 5/5), M, T (2/2), H] (4L)/HA (20L), H2 (14L)/HB (20L) ..
Bl
C.D, DI, DY
GJ
7. Diagrams
Th
7-2, Schematic Diagrams and Printed Wiring Boards...
Printed Wiring Boards

Schematic Diagrams
Q (12) errvses
Q (2/2)
Te,
Bs)
B (24)
B (3/5)
B45)
B (S/S)
BI G/2)«.
BI (2/2).
PYM-4LanaLamola

Section 1
Service Informations
1-1. Board Layout (14 inch)
1-2. Disassembly (14 inch)
1-2-1. Top Cover Removal (14 inch)
@ Three screws
(claw case screw (OS))
Top cover
@ Three screws
{claw
case
screw
(OS)}
@
Two
screws
(4BVTT 4x8)
PYMAaLs/4LaZoL4 14

1-2-2. Bezel Assy Removal (14 inch)
© Two claws
@ Two screws (+B 3 x 8)
a
7 pin
1-2-3. H1 Board Removal (14 inch)
@ Screw (+BVTP 3 x 12)
©
Four
claws
@
Wire
holder
CN2901
PYM-14L3/14L4/20L4

1-2-4. H2 Board Removal (14 inch)
® Screw (+BVTP 3 x 12)
CNB008
ew
ee
Wire
holder
cN5002 Gat
onsen Sq]
@ Four ciaws
® Four claws
D board
@ Bracket D
@® Four screws
ne (+BVTT 4.x 8)
Ns
PYM-14Lan4La20L4 1-3

1-2-6, C Board Removal (14 inch)
1-2-7, B Block Assy Removal (14 inch)
@ Screw (+PSW 4 x 8)
@ Screw (+BVTP 3 x 8)
@ Three screws (+BVTP 3 x 12)
@ Screw (+BVTP 3 x 8)
PYM. i4LaraLaoLs

1-2-8. K, T, B1, Mand B Boards Removal (14 inch)
@ Four screws (+BVTT 3 x 8)
CN1801 (B to B)
® K board
CN3504
© B1 board
CN3505,
CN3503
@
Two
PWB
holders
CN3502
© Mboard
CN107 8 board
(B to B)
‘CN3501 @) Three PWB
holders
@ Four screws
(#BVTP 8 x 12)
1-2-9. Q Block Removal (14 inch)
@ Seraw (+PSW 4 x 8) @ Screw (+PSW 4 x 8) @ Two screw
(4PSW 3 x 12)
N2706
x PY ® Connector label
® Plug holder (A)
‘® AC inlet Sp (with nois fite)
PYMe14L9/t4Lar20L4

1-2-10. Removal of Anode Cap
Note
Short-circuit the anode of the picture tube and the anode cap to the metal chassis, picture tube shield or carbon painted on
the picture tube, after removing the anode.
+ Removal Procedure
‘4, ©
®
Anode button
(1) Turn up one side of the rubber cap inthe (2) Using a thumb, pull up the rubber cap (3) When one side of the rubber cap is
direction indicated by arrow ©. firmly in the direction indicated by separated from the anode button, the
arrow ©. anode-cap can be removed by turing
up the rubber cap and pulling up it in
* Handling Precautions the direction of the arrow ©),
(1) Do not scratch the surface of anode cap with a sharp object.
(2) Do not press the rubber so.hard that it damages the inside of
anode caps. A shatter-hook terminal is built into the rubber.
(3) Do not turn the foot of the rubber over.
‘The shatter-hook terminal will stick out or damage the rubber.
1-2-11.G Board Removal (14 inch)
@® Two screws (+PSW 4°« amid
CN5O5 On go7 Sl) © G shield
© Anode cap
(a
Faw
CN604
CNS0B © e
CNe0eY
%
cnétoS
Fi CN6O3 &
A
1-6
PYM-algiaL4a2oL4

1-2-12. Picture Tube Removal (14 inch)
@ Tow nuts (flange nut (B) M5)
© Two washers
(CRT position washer),
® DY shield
O_o Tow nuts (flange nut (8) M5)
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1-7

1-2-13. Speaker Removal (14 inch)
T-——~ @ Four screws (step screw M3 x 4)
|
oO @ Four speaker cushions
Because there exist the portions that have the high tension voltage,
be careful that the printed boards must not touch each other
or must not touch with the chassis.
1-8 PVN 14L3/14L4i20L4

1-3. Board Layout (20 inch)

1-4. Disassembly (20 inch)
1-4-1. Top Cover Removal (20 inch)
@ Three screws
Top cover
@ Three screws
(claw case screw (OS))
@ Four 2)
(BVTT 4x 8)
® Two screws
(4B3x8)
@ Power button
© Shaft switch
{claw case ecrew (OS))
PYM-14L9/aL4/20L4

1-4-3, HA Board Removal (20 inch)
@ Wo wire holders
© Four screws
(+BVTP 3 x 12)
1-4-4. HB Board Removal (20 inch)
@ Two wire holders
@ 7wo screw
{+BVTP 3 x 12)
an Eeleisitia] on
HB board
a
Panne
® Four claws
PYM-A4La/T4L420L4 1-41

1-4-5. J, D1 and D Boards Removal (20 inch)
@ Four screws. 9 9
(+BVTT 4 x 8) ping
© Two screws
it (+PSW 3 x 8)
@ Insulator (J PWE
PYM 1413/14L4/20L4

1-4-7. B Block Removal (20 inch)
B block assy
i @ Three screws
(+BVTP 3 x 12)
© Screw (+BVTT 4 x 8)
4-4-8, K, T, B1, M and B Boards Removal (20 inch)
© Four screws (+BVTT 3 x 8)
CN1901 (B to B)
® K board
CN3504
CN3505 Aa
CN3503
CN3502
‘CN3501 @ Three PWB
holders
@® Four screws
(FBVTP 8 x 12)
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1-4-9. Q Block Assy Removal (20 inch)
® Screw (+PSW 4 x 8) @ Sorew (+PSW 4 x 8) @ Two screw
(+PSW 3 x 12)
© Connector label
1-4-10. Removal of Anode Cap
Short-circuit the anode of the picture tube and the anode cap to the metal chassis, picture tube shield or carbon painted on
the picture tube, after removing the anode.
+ Removal Procedure
“Of
(1) Tum up one side of the rubber cap inthe (2) Usinga thumb, pull upthe rubbercap (3) When one side of the rubber cap is
©
y
Anode button
direction indicated by arrow @). firmly in the direction indicated by separated from the anode button, the
arrow ©). anode-cap can be removed by turning
up the rubber cap and pulling up it in
+ Handling Precautions the direction of the arrow ©.
(1) Do not scratch the surface of anode cap with a sharp object.
(2) Do not press the mbber so hard that it damages the inside of
anode caps. A shatter-hook terminal is built into the rubber.
(3) Do not turn the foot of the rubber over.
‘The shatter-hook terminal will stick out or damage the rubber.
PYN-4La/4L4r20L4