Sony PVM-14L1 User manual

SON'Y.
TRINITRONe
COLOR
VIDEO
MONITOR
VN-
PVM-14L1MDE
PVM-20L1
~SSM-14L1
SSM-20L1
SERVICE MANUAL
1st Edition (Revised 1)

ABS
COVIay Wid, V-EARBATT.
SERN, TOVIAVWIMRMANEREPRT, WR, EBHRLETI CREPKK,
AFBRICDEMS TEMBVET,
fERESISED, V-EARL HYP ERIERMBBOSA CHAS KS.
4. 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 fiir qualifiziertes Fachpersonal bestimmt.
Alle Wartungsarbeiten diirfen 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 diirfen nur von Personen ausgefihrt werden, die eine spezielie Befahigung
dazu besitzen.
A\ AVERTISSEMENT
Ce manual est destiné uniquement aux personnes compétentes en charge de !’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 a moins d’étre qualifié pour en effectuer d'autres.
Pour toute réparation faire appel 4 une personne compétente uniquement.
* Equipment energized from an external electrical power source :
Class | Equipment
* Degree of protection against electric shock :
No applied part
* Mode of operation :
Continuous operation
WARNING!!
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 A AMARK ONTHE SCHEMATIC
DIAGRAMS, EXPLODED VIEWS AND INTHE 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. CIRCUIT ADJUSTMENTS THAT ARE CRITI-
CALTO SAFE OPERATION ARE IDENTIFIED INTHIS MANUAL.
FOLLOW THESE 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
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 A 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. |
REGLAGES DE CIRCUIT DONT UIMPORTANCE EST CRITIQ,
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-14L1/14L1MDE/20L1
SSM-14L1/20L1

Table of Contents
1. Service Overview
1-1.
Appearance
Figure
(14
inch)
......sscssesessseccsenesesenssseessesesacsssessesacessssenssones
1-1
1-2.
Board
Locations
(14
inch)
...........
te
sscsecsssssessenscscesseeseeceneenesensesssseeneasneetsees
1-1
1-3.
Disassembly
(14
inch)
.......s.sssccsssessececceceesessenenessceceseesssanssesscessessarsesseseeeaes
1-2
1-3-1.
Cabinet
and
Rear
Panel
(14
inch)
.0.........sessesssssscessessenteseeesneene
1-2
1-3-2.
Q
Block
Assembly
and
Q
Board
(14
inch)
......cssessseseeeeceeeeeeees
1-3
1-3-3.
A
Board
Assembly
(14
inch)...
cscsesseeseceresecetssessserensceeseseees
1-4
1-3-4.
C
Board
(14
inch)
oo.
ee
csssecescnsecssseesserenseeeaeesnesserseeeneconsone
1-4
1-3-5.
Picture
Tube
and
Bezel
Complete
Assembly
(14
inch)
.............
1-5
1-3-6.
Anode
Cap
(14
inch)
os
ceessessssecssssesseesssssescneneeeeenssenencassensensees
1-6
1-4.
Appearance
Figure
(20
inch)
.......sscssessssecsecseseseeeseeesssssnenseensnsscsssseanscesates
1-7
1-5.
Board
Locations
(20
inch)
00...
eescsseessesssesesessecssessesseeneneteesssessseseneeeeenseens
1-7
1-6.
Disassembly
(20
inch)
..........csesssssssessessceceseseeceneseeseneesesenaneensessceasessssensseenaes
1-8
1-6-1.
Cabinet
and
Rear
Panel
(20
inch).............sesssssssssserssssesseessseoeees
1-8
1-6-2.
Q
Block
Assembly
and
Q
Board
(20
inch)
......ssscssssseeeseeeeeeneees
1-9
1-6-3.
A
Board
(20
inch)
........eescsssrsccssesesesenseesereeseneesatsseseesrsnseneeees
1-10
1-6-4.
C
Board
(20
inch)
......
ec
eeeesesssesescssseesseeseeecensssesseensesesseaeenenees
1-10
1-6-5.
Picture
Tube
and
Bezel
Complete
Assembly
(20
inch)
...........
1-11
1-6-6.
Anode
Cap
(20
inch)
.......scsesssssesssesenensneasserseceneccenenssnsseseecssoess
1-12
1-7.
Warning
on
Power
Connection
..........sssesseessssessnenseeeseeasesenseaseeecsesssenssees
1-12
2. Set-up Adjustment
2-1. Equipment Required
2-2.
Preparations
(1)
.....sssssssssssssssssssserecsnereeneseenesesessessesnenensnseseanseseecanecaneseenens
2-3.
Preparation
(2).
Initialization
..........cesssccsseseseseseessessessesnseessnensennenseneennes
2-6
2-4,
Writing
Model
Data
.........cscsessssescnssesenenseesarseesesssnssunssssssesesseseseseneneaeensans
2-6
2-5.
Picture
Output
........cccssecssssesssseesssssersseeessnensessenenessecenseensvensesserarensnensesseeenes
2-6
2-6.
Landing
Adjustment
(1)
......ccessessssssssessseesenenenestssrenssssnesensessssestscssreseseees
2-6
2-7.
Deflection
Yoke
Neck
Rotation
AdjustMent
..........ccssecsecseeeteseeerseeeeeeee
2-8
2-8.
Convergence
Adjustment
(1)
.......sssccssessessesscsesssseereeenesseseenecasenenseaseeenee
2-9
2-9.
Convergence
Adjustment
(2)
.......sssssecssceeceerseeeseneateetseceeesssessnacsentersenes
2-10
2-10.
Landing
Adjustment
(2)
.....ssssssssesssssssssessseseeesseresstseeneaneconssessesssoseersnenaes
2-10
2-11.
Focus
Adjustment
......cc.scssscsssrssssseesensnenesceseesseacssaserssssesnesscesnsessssassnacees
2-10
2-12.
White
Balance
Adjustment
..........cssssssesssssensnsnesensesssecsonesneeesesseeeanseneess
2-11
2-12-1.
Sub
Bright
Adjustment
...........csesssescnesssecececenseeseneeeeeeneseenenees
2-11
2-12-2.
White
Balance
Adjustment
[D65]
............:sssesesssesessssssenseneeee
2-11
2-12-3.
White
Balance
Adjustment
[D93]
..........csssssscesssessseesserseeoes
2-11
2-13.
Deflection
Adjustment
...........ccssesessssnssseeesencssessseneeesscssenseenesonsneseeensesenes
2-12
2-13-1.
525
Vertical
Deflection
Adjustment
0.0.0...
sescsesesecenenesees
2-12
2-13-2.
625
Vertical
Deflection
Adjustment
.........
ccc
csceeesssersteeseenees
2-13
2-14.
Horizontal
Deflection
Adjustment
..........ccccssssssessseseecneeseeeeneeeessnetseensenenes
2-13
2-14-1.
525
Horizontal
Deflection
Adjustment
............cssscsesesreeeeees
2-13
2-14-2.
625
Horizontal
Deflection
Adjustment
.............cssscssseesesseeees
2-14
|
PVM-14L1/14L1MDE/20L1
4
SSM-14L1/20L1

2-15. Sub Contrast Adjustment 20... ec sessesssssssscssesesesneensesseessnessenesnnenssaneaes 2-14
2-16. Adjustment of NTSC Mode oo... cecsssssssesssssseseseessssseesteseesssesensssesseeeensees 2-15
2-16-1. NTSC Composite Input ......ccccccssessssssceesceessseerereensenseeseeees 2-15
9-16-22 (NTSC. Y/C Tnput: sicivctessetvsccestaesniveunticcataniceceant entecxesceceeseasvsbeveses 2-15
2-17. Adjustment of PAL Mode ou... esssssscssscesssssssssesseenenessesesssssneeccsesessenesseaees 2-15
2-17-1. PAL Composite Input ......ccccssseccesseceseseeenseseeasenessesnenseeaeenees 2-15
2-17-2. PAL Y/C Input 0... escscssscecsescnssssssscecessssressessseessesesseaceseeseees 2-15
3. Safety Related Adjustment
3-1. +B Voltage Check 0.0... eessesssessssssansscssessseeessseestsnsanserensersseseenseneesaaesenane 3-1
3-2. Protection Circuit Confirmation ..........ccssccecssscesenseesessccescoeesesssensenscnesosossens 3-1
3-2-1. HV Protector Circuit Confirmation ...........ccccccsesscsssecreceeseeeeeeee 3-1
A. Semiconductors cision ctceprcccntienewaneds 4-1
5. Spare Parts
5-1. Notes on Repair Parts ......cecsssscssscssssssessereseerssseseesesensaseseassensessneeeeeenesseeeeeees 5-1
5-2. Exploded ViewS ........scccsssssscsssssssssesscssssesenseessceseatencaeeneenssneaeaeeeesneseasenaesseeos 5-2
5-3. Electrical Parts List ..........csccsssscsssssssssssssssssescsseseesseseseesaseeeseesracseeesarenees 5-10
6. Block Diagrams
OMY CaF 11 coe ene eT Tne oete nes er nee ere wr aneerrnar rie err 6-1
Pe OID VIM hoch ete acannon lineal teiel WT 6-2
7. Diagrams
7-1. Frame Schematic Diagram 0.0.0... csscssssesssssscssssesssscssesesesneessesceeesensennessaneas 7-2
FLAME ......sscessoosstersercscssancesssscnanossrnseverserssarsoneconesscencesassasstesenstnenseasssnsensoes 7-2
7-2. Schematic Diagrams and Board Layouts ..........ssssscsccssececseseessessnesneeeseesens 7-3
Schematic Diagrams
C (14 Inch)
© (QD TCH) soasessssencccndenaatesesdtesedncscuscnctcaustesesastancde Meabucbesuuesckedueestesesteeudaates 7-13
PVM-14L1/14L1MDE/20L1
SSM-14L1/20L1

Section 1
Service Overview
1-1. Appearance Figure (14 inch)
PVM-14L.1/14L1MDE/20L1
SSM-14L1/20L1

1-3. Disassembly (14 inch)
1-3-1. Cabinet and Rear Panel (14 inch)
© Six nylon rivets
© Remove the rear panel
in the direction of the arrow ©.
@ Remove the cabinet a
in the direction of the arrow @.
@ Two case claw screws
(M 4 x8)
© Four screws
(+BVTP 4x 16)
@ Two case claw screws
(M 4x 8)
1-2
PVM-1411/14L1MDz/20L1
SSM-14) /20L1

1-3-2. Q Block Assembly and Q Board (14 inch)
* Remove the cabinet and rear panel. (Refer to 1-3-1.)
oa
ff
R\
@ Four screws
(+PS 4 x 8)
Push the two areas in the bottom of beznet in the direction of arrow @,
and pull the Q block assembly in the direction of the arrow ®.
@® Q block assembly
@ Two screws
(+PSW 3x 10)
AC inlet
© Two screws
(+PSW 3 x 10)
© Connector panel
@© Q board
PVM-14L1/14L1 MDE/20L1
SOM-14L1/20L1

1-3-3. A Board Assembly (14 inch)
* Remove the cabinet and rear panel. (Refer to 1-3-1.)
@ Anode cap N
‘ (
@® Remove the A board
in the direction of the arrow @.
@ Power switch button
@ Open the lead holder.
1-3-4. C Board (14 inch)
* Remove the cabinet and rear panel. (Refer to 1-3-1.)
@ C board
i
PVM-14L1/14L1
MDE=/2011
SSM-14,
1/20L1

1-3-5.
Picture
Tube
and
Bezel
Complete
Assembly
(14
inch)
*
Remove
the
cabinet
and
rear
panel.
(Refer
to
1-3-1.)
* Remove the Q block assembly. (Refer to 1-3-2.)
* Remove the A board. (Refer to 1-3-3.)
* Remove the C board. (Refer to 1-3-4.)
@ Deflection yoke
@ Prepare a work bench on the cushion
and place the CRT and beze! assembly
on the work bench.
Cushion
@® Four self tapping screws (M5)
ie
Cushion
Note:
Bench
Prepare a work bench that can protect surface
of CRT and can withstand the weight of the CRT.
@ Remove the CRT shield assembly
in the direction of the arrow @.
© Picture tube
Cushion
©
Remove
the
bezel
complete
assembly
in the direction of the arrow B.
PVM-14L1/14L1MDE/20L4
1-5
SSM-14L1/20L1

1-3-6. Anode Cap (14 inch)
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
OT
(1) Turnup one side of the rubbercapinthe (2) Using a thumb, pull up the rubber cap (3)
direction indicated by arrow @). firmly in the direction indicated by
arrow @).
* Handling Precautions
(1) Donot 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.
1-6
C)
y
4
Anode button
When one side of the rubber cap is
separated from the anode button, the
anode-cap can be removed by tuming
up the rubber cap and pulling up it in
the direction of the arrow ©).
PVM-14L1/1 4L1Mtez/20L1
SSM-14,-4/20L1

1-4. Appearance Figure (20 inch)
1-5. Board Locations (20 inch)

1-6. Disassembly (20 inch)
1-6-1. Cabinet and Rear Panel (20 inch)
@ Six nylon rivets
@® Remove the cabinet
in the direction of the arrow ®.
\
3,
© Remove the rear pane!
in the direction of the arrow ©).
N
.
wenn wdgne
tii:
ocnece.
Cee 5
5
AS oqztttt
@ Two case claw screws
(M 4x 8)
© Four screws
(+BVTP 4 x 16)
@ Two case claw screws
(M4 x8)
a
PVM-14L1/14L1MDE/20L1
SSM-14L1/20L1

1-6-2. Q Block Assembly and Q Board (20 inch)
* Remove the cabinet and rear panel. (Refer to 1-6-1.)
@ Four screws
(+PS 4x 8)
Push the two areas in the bottom of beznet in the direction of arrow @,
and pull the Q block assembly in the direction of the arrow ©.
x
SS
© Q block assembly
@ Connector label
@ Two screws
(+PSW 3 x 10)
)
AC inlet
© Two screws
(+PSW 3 x 10)
© Connector panel
© Q board
PVM-14L1/14L1MDE/20L1
1-9
$SM-14L1/20L1

1-6-3. A Board (20 inch)
* Remove the cabinet and rear panel. (Refer to 1-6-1.)
@ Anode cap
@ Remove the A board ;
in the direction of the arrow @).
@ PWB holder
@) Power switch button
@ Focus lead assembly
1-6-4, C Board (20 inch)
* Remove the cabinet and rear panel. (Refer to 1-6-1.)
C board
CN701 ie
“i
CN720 2)
CN721 a Ly AY
CN722 LBC.
Un
i Sb
1-10 PYM-T4LIM4L1MEE/20L1
S6M-11 £2011

1-6-5.
Picture
Tube
and
Bezel
Complete
Assembly
(20
inch)
*
Remove
the
cabinet
and
rear
panel.
(Refer
to
1-6-1.)
* Remove the Q block assembly. (Refer to 1-6-2.)
* Remove the A board. (Refer to 1-6-3.)
* Remove the C board. (Refer to 1-6-4.)
@ Deflection yoke
@ Prepare a work bench on the cushion
and place the CRT and bezel assembly
on the work bench.
mi
I
SS
alt
oe 7 ®&
Q
°
Cushion
@® Four self tapping screws (M5)
he
Cushion
Bench
Note:
Prepare a work bench that can protect surface
of CRT and can withstand the weight of the CRT.
@ Remove the CRT shield assembly
in the direction of the arrow @).
© Picture tube
© Remove the bezel complete assembly
Cushion Z eae
in the direction of the arrow ©.
PVM-14L1/14L1MDE/20L1
1-11
§SM-14L1/20L1

1-6-6. Anode Cap (20 inch)
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
“Ot
(1) Turn up one side of the rubber capinthe (2) Using a thumb, pull up the rubber cap (3) When one side of the rubber cap is
©
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 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.
1-7. Warning on Power Connection
Use a proper power cord for your local power supply.
Plug type LP-30B ee
Female end LS-13 VM0303B YC-35
Cord type SB-SVT HO5VV-F VCTF
Minimum cord set rating 10A/125V 10A/250V 7AM25V
Safety approval UL/CSA SEMKO, NEMKO, DEMKO, SEV, DENAN-HO
KEMA, El (FIMKO), CEBEC, VDE, BS
a) Note : Use an appropriate rating plug which is applied to local regulations.
1-12 PVM-14L1/14L1N 2/2011
SSM-1_-1/20L1

Section 2
Set-up Adjustment
2-1. Equipment Required
* Oscilloscope
Tektronix 2465 or equivalent (with bandwidth of 350
MHz)
* VG (programmable video signal generator)
VG-854 or equivalent
* Digital VOM
Advantest TR6845 or equivalent
* Slide induction transformer
* DC power supply
Start the following adjustments 5 minutes after the main
power is turned on.
* In this chapter, [| indicates the control items in the
service mode.
Example : |60 H-FREQ
PVM-14L1/14L1MDE/20L1
SSM-14L1/20L1
2-2. Preparations (1)
Service Mode
This set is provided with a switch 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
[MENU] key shown on the display of the menu 3
seconds or more.
2. Operating the Service Mode
Select the desired service item with the (11, [Wb] 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
[MENU] key shown on the display of the menu 3
seconds or more.

4. Executing FACTORY LOAD
If the adjustment data is damaged or lost by some
reasons, you can restore the default factory adjustment
data by executing FACTORY LOAD as described
below.
Select the following sub menus from the Service Menu
in the order of : [SYSTEM] — [FACTORY...] —
[LOAD...] to read the default factory data. If the
default factory data is damaged or the ROM is re-
placed without executing FACTORY SAVE as
described in the following paragraph, you cannot
execute FACTORY LOAD.
Executing FACTORY SAVE
This operation is to write the FACTORY LOAD data
into the factory data area in the memory.
Select the following sub menus from the Service Menu
in the order of : [SYSTEM] — [MAINTENANCE ID]
and type 111. Then select the following sub menus
from the Service Menu in the order of : ENGINEER]
— [FACTORY SAVE] to write the factory data in the
memory. FACTORY SAVE is protected from miss
operation so that FACTORY SAVE cannot be execut-
ed unless MAINTENANCE ID is set.
FACTORY SET
If the following circuit board is replaced or the following
IC on the respective board is replaced, perform the follow-
ing settings.
A board, IC001, ICO003
1.
Select the following sub menus from the Service Menu
in the order of : [SYSTEM]-[MAINTENANCE ID]
and type 111.
If the IC003 is replaced, select the following sub
menus from the Service Menu : [ENGINEER]-
[CLEAR NVM ON A] and write data.
Select the following sub menus from the Service
Menu in the order of : [SYSTEM]-[MODEL INCH},
[SYSTEM]-[MODEL TYPE] and write the model data
of each model in the [MODEL TYPE] referring to
table 2-2.
Perform all adjustment items of the [SIGNAL] menu
and of the [DEFLECTION] menu.
Upon completion of adjustment, select the menus
[ENGINEER]-[FACTORY SAVE] to save the
adjustment data.
PVM-14L1/14L1MDE/20L1
SSM-14L1/20L1

Service Mode screen display
GSUB BRIGHT
» LUMI DELAY
+ SUB CHROMA
¢ SUB PHASE
+ PEAK FREQ
* SCO
« WHITE PEAK
¢ SUB SHARP
COLOR TEMP
¢ ADJUST
RASTER H
+ RIGHT H BLK
+H POSITION
BV
S$ CORRECTION
PIN AMP
PIN PHASE
-U CORNER PIN
« L CORNER PIN
« V ANGLE
-V BOW
PVM-14L1/14L1MDE/20Lt
SSM-14L1/20L1
« ADJUST GAIN...
+ ADJUST BIAS...
=
AoeoeorwaArs
=
:
s
ANTENNAE
& aoe
2-3

When changing DESIGN ITEMS 1/2 and 2/2, set the MAINTENANCE ID to 111 in SYSTEM.
_
+ AV SWITCH 0...
+ AV SWITCH 1...
¢ SYNCHRONIZATION 0...
¢ SYNCHRONIZATION 1...
« DEFLECTION...
¢ SOUND 0.
: eM
> CM 3210
nKeoemwh
Zz
PVM-14L1/14L1Mige=/20L1
SSM-14.4 /20L1