Sony Trinitron PVM-9L2 User manual

SERVICE MANUAL _
MODEL
PVM-9L2 WORLD SCC-M04C-A
MODEL CHASSIS NO. DEST. CHASSIS NO.

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AWARNING
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.
AWARNUNG
Die Anieitung ist nur fur qualifiziertes Fachpersonal bestimmt.
Alle Wartungsarbeiten durfen nur von qualifiziertem Fachpersonal ausgefiihrt warden. Urn die
Gefahr eines eiektrischen Schlages, Feuergefahr und Verletzungen zu vermeiden, sind bei
Wartungsarbeiten strikt die Angaben in der Anieitung zu befolgen. Andere als die angegeben
Wartungsarbeiten durfen nur von Personen ausgefuhrt warden, die eine spezielle Befahigung
dazu besitzen.
AAVERTISSEMENT
Ce manual est destine uniquement aux personnes competentes en charge de I’entretien. Afin
de reduire les risques de decharge electrique, d’incendie ou de blessure n’effectuer que les
reparations indiquees dans le mode d’emploi amoins d’etre qualifie pour en effectuer d’autres.
Pour toute reparation faire appel aune personne competente uniquement.
WARNING!!
AN INSULATED TRANSFORMER SHOULD BE USED DURING
ANY SERVICE TO AVOID POSSIBLE SHOCK HAZARD, BE-
CAUSE OF LIVE CHASSIS.
THE CHASSIS OFTHIS RECEIVER IS DIRECTLY CONNECTED
TOTHE AC POWER LINE.
SAFETY-RELATED COMPONENT WARNING !!
COMPONENTS IDENTIFIED BY AAMARK ONTHE SCHEMATIC
DIAGRAMS, EXPLODED VIEWS AND IN THE PARTS LIST ARE
CRITICAL TO SAFE OPERATION. REPLACE THESE COMPO-
NENTSWITH SONY PARTSWHOSE PART NUMBERS APPEAR
AS SHOWN IN THIS MANUAL OR IN SUPPLEMENTS PUB-
LISHED BY SONY. CIRCUIT ADJUSTMENTSTHAT ARE CRITI-
CALTO SAFE OPERATION ARE IDENTIFIED INTHIS MANUAL.
FOLLOWTHESE PROCEDURES WHENEVER CRITICAL COM-
PONENTS ARE REPLACED OR IMPROPER OPERATION IS
SUSPECTED.
ATTENTION!!
AFIN D’EVITER TOUT RISQUE D’ELECTROCUTION
PROVENANT D’UN CHASSIS SOUS TENSION, UN
TRANSFORMATEUR D’ISOLEMENT DOIT ETRE UTILISE LORS
DETOUT DEPANNAGE.
LE CHASSIS DE CE RECEPTEUR EST DIRECTEMENT
RACCORDE AUALIMENTATION SECTEUR.
ATTENTION AUX COMPOSANTS RELATIFS A LA
SECURITE!!
LES COMPOSANTS IDENTIFIES PAR UNE MAPQUE ASUR
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. LES
REGLAGES DE CIRCUIT DONT LIMPORTANCE EST CRITIQUE
POUR LA SECURITE DU FONCTIONNEMENT SONT
IDENTIFIES DANS LE PRESENT MANUEL. SUIVRE CES
PROCEDURES LORS DE CHAQUE REMPLACEMENT DE
COMPOSANTS CRITIQUES, OU LORSQU’UN MAUVAIS
FONCTIONNEMENT EST SUSPECTE.
PVM-9L2

Table of Contents
1.Service Informations
1-1. Board Layout 1-1
1-
2. Disassembly 1-2
1-2- 1.Cabinet Assy Removal 1-2
1-2-2. QBoard Removal 1-2
1-2-3. BBoard Removal 1-3
1-2-4. DBoard Removal 1-4
1-2-5. CBoard Removal 1-5
1-2-6. PBoard Removal 1-5
1-2-7. Rear Assy Removal 1-6
1-2-8. AC Inlet Removal 1-6
1-2-9. GBlock Assy Removal 1-7
1-2-10. GBoard Removal 1-7
1-2-1 1. Bezel Complete Assy Removal 1-8
1-2-12. JBoard Removal 1-8
1-2-13. HBoard Removal 1-9
1-2-14. Deflection Yoke Removal 1-9
1-2-15. Picture Tube Removal 1-10
1-2-16. Removal of Anode Cap 1-10
1-2-17. Bezel Assy and XBoard Removal 1-11
2. Set-up Adjustment
2-
1, Equipment Required 2-1
2-2. Preparations (1) 2-1
2-3. Preparation (2). Initialization 2-12
2-4. Writiug Model Data 2-12
2-5. Picture Output 2-12
2-6. Free-run Frequency Adjustment 2-12
2-7.Landing Adjustment 2-13
2-8. HBlanking Adjustment..,.. 2-14
2-9. Deflection Adjustment 2-15
2-10. Convergence Adjustment (1) 2-16
2-11. Deflection Yoke Neck Rotation Adjustment 2-17
2-12. Convergence Adjustment (2) 2-18
2-13. G2 Adjustment 2-18
2-14. White Balance Adjustment (15k) 2-19
2-15. SUB BRIGHT, SUB CONTRAST Adjustment... 2-19

2-16. White Balance Interference Correction Adjustment 2-20
2-16-1. NTSC Composite Adjustment 2-20
2-16-2. PAL Composite Adjustment 2-20
2-16-3. COMPONENT Adjustment 2-20
2-
16-4. SDI Adjustment 2-20
2-17. Focus Adjustment 2-21
2-
18. VBLK Adjustment 2-21
3. Safety Related Adjustment
3-
1. +B Voltage Check 3-1
3-2. Hold-down Circuit Connection Check 3-1
3-
3. Protection Circuit Confirmation 3-2
3-
3-1. HV Protector Circuit Confirmation 3-2
3-
3-2. IK Protector Circuit Check 3-2
4. Electrical Adjustments
4-
1.Equipment Required 4-1
4-
2. BBoard Adjustments 4-2
4-
2- 1.Preparations 4-2
4-2-2. NTSC SETUP 0Mode Adjustment 4-3
4-2-2-1. Y/C Input 4-3
4-2-2-2. Composite Input 4-4
4-2-3. NTSC SETUP 7.5 Mode Adjustment 4-4
4-2-3-1. Y/C Input 4-4
4-2-3-2. Composite Input 4-4
4-2-4. PAL Mode Adjustment 4-5
4-2-4-1. Y/C Input 4-5
4-2-4-2. Composite Input 4-5
4-2-5. YPBPR SMPTE (601) Signal Adjustment 4-6
4-2-6. YPBPR BETACAM SETUP 0Signal Adjustment 4-6
4-2-7. YPBPR BETACAM SETUP 7.5 Signal Adjustment 4-7
5. Theory of Operation
5-
1. DBoard and PBoard ...5-1
5-2. GBoard 5-2
6. Semiconductors 6-1
2PVM-9L2

7.
Spare Parts
7- 1.Notes on Repair Parts 7-1
7-2. Exploded Views 7-2
7-3. Electrical Parts List 7-8
8.
Block Diagrams
B(1/3), Q(1/2), D(l/2) 8-1
B(2/3), C,H(l/2) 8-2
B(3/3),H(2/2),Q(2/2),X 8-3
G,D(2/2),P,J,DY 8-4
9.
Diagrams
9-1. Schematic Diagrams and Printed Wiring Boards 9-2
Schematic Diagrams
Q9-3
B(l/5) 9-6
B(2/5) 9-7
B(3/5) 9-8
B(4/5) 9-9
B(5/5) 9-10
H9-13
P9-15
C9-17
J9-17
D(l/2) 9-20
D(2/2) 9-21
G9-23
Printed Wiring Boards
Q9-2
B9-4
X9-5
H9-13
P9-14
C9-16
J9-16
D9-18
G9-24
PVM-9L2 3

1-2-5. CBoard Removal
*Open the Dboard before proceeding to the next step.
1-2-6. PBoard Removal
*Open the Dboard before proceeding to the next step.
PVM-9L2 1-5

1
1-2-7. Rear Assy Removal
1-2-8. AC Inlet Removal
*Remove the rear assy before removing the AC inlet.
1-6 PVM-9L2

1-2-9. GBlock Assy Removal
*Open the Band Dboards then remove the rear assy before proceeding to the next step.
1-2-10.G Board Removal
PVM.9L2 1-7

1-2-11. Bezel Complete Assy Removal
*Open the Band Dboards then remove the Cboard before proceeding to the next step.
In the direction of the arrow.
1-2-12. JBoard Removal
*Remove the front assy and Picture tube before removing Jboard.
CN603
i-ft PVM-9L2

1-2-13. HBoard Removal
*Remove the Cboard and bezel complete assy before removing the Hboard.
®Four screws
1-2-14. Deflection Yoke Removal
^Remove the Cboard and bezel complete assy before removing the deflection yoke.
PVM-9L2 1-9

1-2-1 5. Picture Tube Removal
Remove Cboard, bezel complete assy and deflection yoke before removing the picture tube.
1
(D Two tapping
screws (5)
(3) Front assy
(D Picture tube
@Bezel assy
1-2-16. Removal of Anode Cap
INote I
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
K-Anode button
(1)
Turn up one side of the rubber cap in the (2) Using athumb, pull up the rubber cap (3)
direction indicated by arrow @. firmly in the direction indicated by
arrow ®.
•Handling Precautions
(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. Ashatter-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.
When one side of the rubber cap is
separated from the anode button, the
anode-cap can be removed by turning
up the rubber cap and pulling up it in
the direction of the arrow ©.
1-10 PVM-9L2

1-2-17. Bezel Assy and XBoard Removal
^Remove the front assy and picture tube before removing the bezel assy and Xboard.
®Two screws
(+BVTP 3x12)
PVM-9L2 1-11

Section 2
Set-up Adjustment
2-1. Equipment Required 2-2. Preparations (1
)
•Oscilloscope
Tektronix 2465 or equivalent (with bandwidth of 350
MHz)
•NTSC/PAL component signal generator
Tektronix TG2000 +AVG1 (option module)
+AWVG1 (option module) or equivalent
•SDI signal generator
Tektronix TSG-422
•Monoscope signal generator
ShibaSoku TP22AX or equivalent
•VG (programmable video signal generator)
VG854 or equivalent
•Frequency counter
Advantest TR5821AK or equivalent
•Digital VOM
Advantest TR6845 or equivalent
•Slide induction transformer
•High tension voltmeter
•DC power supply
•Ammeter
•Luminance meter
Minolta CA-100 or equivalent.
If the Minolta CA-100 is not available, perform the
measurement by visual inspection by comparing the
monitor that has already been adjusted earlier with the
monitor that you want to adjust.
INote I
Start the following adjustments 5minutes after the main
power is turned on.
*In this chapter,
service mode.
indicates the control items in the
Example ;|60 H-FREQ
Service Mode
This set is provided with aswitch for service on the front
panel that can be used to make various adjustments. The
operation method of this switch is explained in detail below.
1
.
Entering the service mode
Simultaneously press the [ENTER] key and the
[DEGAUSS] key shown on the display of the menu.
2. Operating the Service Mode
Select the desired service item with the [{^], [^] key
and press the [ENTER] key to enter the adjustment
mode.
Press the [^] key to increase the adjustment value.
Press the [{^] key to decrease the adjustment value.
Press the [ENTER] key to save the adjustment value.
Press the [MENU] key to cancel the entry.
3. Finishing the service mode
Simultaneously press the [ENTER] key and the
[DEGAUSS] key shown on the display of the menu.
4. Easy ON/OFF of the service mode
If once entering the service mode after having turned
on the power, easy ON/OFF is possible by once more
pressing the LINE A, LINE B, OPTION Aor OP-
TION Bswitch on the front panel (the LED lights) as
long as the power is not turned off or as long as the
service mode is not finished.
PVM-9L2 2-1

Service Mode screen display
1
PVM-9L2 2-3

AGING MODE
fVERSION
"•MODEL INCH
•MODEL TYPE
•AGING MODE
I•FACTORY...
g•SIGNAL...
MAINTENANCE ID
SETUP...
PVM-9L2 2-5