JVC AV-21DMT3 Schematic

3
3
SERVICE MANUAL
COLOUR TELEVISION
AV-21DMT3 / AV-21D3 AV-2135TEE / AV-2135EE
/D
AV-21DMT3/AV-21D
AV-2135TEE/AV-2135EE
AV-21DMG
BASIC CHASSIS
CG
AV-21DMG3
[ RM-C3 64GY ][ RM -C9 0 ]
CONTENTS
AV-21DMG3
/
/-A
!
SPECIFICATIONS
!
SAFETY PRECAUT IONS ・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・
! FEATU RES・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・ ! FUNCTIONS ・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・ !
MAIN DIFFERENCE LIST ・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・
! SPECIFIC SERVICE INSTRUCTIONS ・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・ !
SERVICE ADJUSTMENTS
!
PARTS LIST ・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・
OPERAT ING INSTRUCTIONSSTAND ARD CIRCUIT DIAGRAM ・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・
1
・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・
・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・
・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・
・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・
・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・
・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・
・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・
・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・
・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・
・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・
・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・
・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・
・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・
・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・
・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・
・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・
・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・
・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・
・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・
・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・
・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・
・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・
・・・・・・・・・・・・・・・・・・・・・・・・・・・・・
・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・
・・・・・・・・・・・・・・・・・・・・・・・ 3
・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・
・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・
・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・
・・・・・・・・・・・・・・・・・・・・・・・ 7
・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・
・・・・・・・・・・・・・・・・・・・・・
・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・
・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・ 33
・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・
・・・ 4
・・・・・・
・・ 5
・・・・
・・・・・・・・・・・・・ 8
・・・・・・・・・・・・・・・・・・・・・・・・・・
15
・・・・・・・・・・・・・・・・2-1
・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・
2
No. 52023
Jun. 2002
A
V-21DMT3/AV-21D3
A
A
S
U
/C
NUMBERS
GU
O
/
3
V-2135TEE/AV-2135EE V-21DMG3
REPLACEMENT OF MEMORY ICs
1. MEMORY ICs
Thi s mod el u ses me mo r y I Cs. This memo r y IC da ta are f or pr o per opera tion of th e vide o a nd defl ect io n cir cuits. When r ep la cing memory ICs , b e su r e to use ICs w r it ten w i th t he ini tial v a lu es of dat a.
2. PROCEDURE FOR REPLACIN G MEMORY ICs
(1) Power off
Switch the p ower of f and di sc o nn ect t he pow e r plu g f rom t he w al l out let.
(2) Replace ICs
Be sure to use memory ICs written with the initial data values.
(3) Power on
Connect th e pow er plu g i nt o the wal l ou tl et and s w itch t he po we r on .
(4) C heck and s et SY STEM CONSTAN T SET
・・・・ It must not adjust without adjustment signals.
1) Press th e DI SPLAY key and the PICTURE MODE key of the REMOTE
CONTROL UNIT simultaneously.
2) The SERVICE MENU screen of Fig. 1 will be displayed.
3) W hi l e th e SE RV IC E M EN U is di splayed , ag ain press the DI SPLAY ke y and
PICTURE MODE ke y s imulta neo us l y, an d t he S YSTEM C ONSTA NT SE T
screen of Fig. 2 w ill b e di splayed.
1) Check the s ettin g val ue s of the S YST E M CO N ST AN T S ET of T abl e 1 If th e
val u e is diffe re nt, select the sett ing item with the MENU /key, and set
th e co rrect valu e with t he MENU - / + k ey.
5) Press the DISPL AY ke y tw ice, and r etu rn t o the n or m al sc r ee n.
(5) Receive channel of setting
Refe r to th e OPE RATING INST RUCTIONS and set th e rec e i ve cha nn els
(chan nels prese t) as descr i be d
(6) User Setting
Check t he us er s etti n g v al u e of T ab l e 2, and if setti ng v alue is di f feren t, set
th e co rrect valu e.
For setting , refer to the OPE RATING INSTRUCTIO NS.
(7) Setting of SERVICE MENU
Ve rif y the s et ting it ems of th e SER VICE MENU, and r eset whe r e n ecess a r y.
For setting , refer to the SERVICE ADJUSTMENTS.
NOTE
Alth ou gh th e k ey p osi tion of t he RM-C90 r e mote control unit is diff erent fr o m
th at of th e RM -C36 4GY rem ot e cont rol un it , th e f unctio ns of both u ni ts a re the
sam e So pl e as e use th e attac hed d i agr am for the RM-C90 remote control
uni t fo r the R M-C36 4GY.
By t he way, MENU -/+ Key fu nction s in t he sam e ma nner as for / key.
KEY ASSIGNMENT OF REMOTE CONTROL UNIT
ERVICE MEN
1.IF 2.V
3.DEF 4.VSM PRESET
5.PRES ET
6. TURB O T I MER O F F
1-6 SELECT DISP : EXIT
******
***********
***** **
************
**********
*** ** **
*** ** **** ***
*** ** ***** ** **
**.***
****
** ***
** ***** ***
***
******
Fig.1
SY STEM C ON STA NT- ⅠⅠⅠ
SYSTEM CONSTA NT SE T 1
COL O UR : BI LIN
AL : N TUNE R : MU ECO SENSOR : YES
LANG U AG E :
: SELECT
- / + : OPERATE DISP : EXIT
***
***
SY STEM C ON STA NT- ⅡⅡⅡ
SYSTEM CONSTA NT SE T 2
B/B SO UND : OFF LOCK : 180
COL OUR AU TO : QSS : MINT
ALC : NO TEXT R ATE : 2 0
: SELECT
/
- / + : OPERATE DISP : EXIT
***
SY STEM C ON STA NT-
SYSTEM CONSTANT SET
AMP TUNER : NO VNR : YES
TEXT TABLE : VOLUM PWM : POS
***
ⅢⅢⅢⅢ
10
DI SPL A Y k ey
MENU
/ key
PICTURE
MO DE k e y
MENU
▼/▲
key
(RM-C90)
key
No. 52023
: SELECT
/
- / + : OPERATE DISP : EXIT
Fig.2
A
3
A
A
SE TT ING OF SY STEM C ON STANT SET
A
Setting item Setting contents
OLOUR
BILINGUAL
TUNER
AI ECO S ENSOR
MUL TI . PA LTRIPLE
YE S NO
MU MA
YE S NO
E/R/A /P E/C E/R
LA NG UA G E
E/C/ M/I
E/R/U
V-21DMT3/AV-21D
V-2135TEE/AV-2135EE
AV-
21DMT3
AV-
21D3/D
MULTI. TRIPLE TRIPLE MULTI.
NO
MU
YE S
E/R/A /P
E/C/ M/I E/R/U E/R/A /P
Setting value
AV-
2135TEE
AV-
2135EE
AV-
21DMG3
V-21DMG3
AV-
21DMG3
/- A
B/B SOU ND
YES 10 20 ~ 230
LO CK
250 240
COLOUR AUTO
QSS
ALC
TEXT RAT E
10 20 40 80
AMP TUNER
VNR
TEXT TABLE
VOL UM PW M
USER SE T TING V ALUES
Setting item Setting value Setting item Setting value
ON OFF
YE S NO
MI NT
MQ SS
YE S NO
YE S NO
YE S NO
RA CYL
POS
NEG
OFF
18 0
NO
MI NT
NO
20
NO
YE S
ARA
POS
Table 1
ON
YE S
CYL
SUB POWER ON LANGUAGE ENGLISH
CHA NNEL PO SITIO N 1 PO SITIO N CHA NNEL P RE SET Refe r t o OPE RATIN G I NS TRUCTION
VOL UME About 10 AI ECO S EN SOR OFF
TV/V IDEO
ON SCR EEN DI SPLAY
TV VNR OFF
POSITION INDICATION AUTO SHUTOFF OFF
COLOUR SYSTEM PAL ON TIMER PR1 0:00
SOUND SYSTEM B / G BLUE BACK OFF
OFF TIMER OFF OSD.Shows 00 CHI LD LO CK OFF
PICTURE MODE (VSM) BRIGHT
Table 2
No. 52023
11
A
V-21DMT3/AV-21D3
A
A
)
V-2135TEE/AV-2135EE V-21DMG3
INITIAL SETTING VALUE OF SERVICE MENU
1. Ad just m ent of th e SER VICE MENU is m ade o n th e bas is o f the initial s et ti ng va lues ; ho wev er , t h e new se tting values w hi ch set the screen in its optimum condition may differ from the initial setting.
2. Do not change the initial Setting Values of the Setting (Adjustment) items not listed In “ADJUSTMENT”.
2. V/C
Initial set ting v al ue
Setting item
2. DRI VE
3. BR IG HT
Colour sy stem
RED
GREE N1. CUT OFF
BL UE
RED
BL UE
Variabl e
range
-128 +127
-128 +127
-127+127
PA L SE CAM NT SC 3.5 8 NT SC 4.4 3
-50
+ 0
+ 0
4. CONT .
5. COLOUR -63~+63 + 0
TV
AV -2 1D3/ D AV -2 135T EE
6. TINT
7. SE C AM BL AD J . -31~+31
8. SHARP
3. DEFL ECTION
1. VER. POS ITION -04 +03 - 2 - 3
2. HOR. POSITION
3. VER. HEIGHT
4. VE R . L I NE AR ITY
5. VER. SWCURVE
6. H OR. VC O AD J US T
VI DEO
Do Not Ad j.
Setting item Variable range
AV -2 135EE
AV -2 1DMT3 AV -2 1DMG 3
AV -2 1DMG 3/- A
TV - 8(Fixed)
VI DEO
Do Not Ad j.
-63 +63
-63 +63
-32~+31
-16 +15
-64 +63
-32 +31
-32 +31
-63 +62
+ 0
+ 0 + 0
+0 + 0
+8 + 0
+ 0
+15(Fixed
Initial set ting v al ue
fv : 50Hz MODE fv : 60Hz MODE
+1 + 4
-40 + 0
+13 - 3
-32 + 0
+ 0 + 0
4. VS M PRESE T
12
VS M pr eset
VSM mode
Setting item
TINT SETTING VA LUE +1 5
COLOUR SE TTIN G VA LU E +15
BR IG HT SET TING VA LUE +1 5
CONT . SE TTING VA LU E +30 +15 + 11
SHARP SE TT IN G VA LU E +1 5 +1 2
BRIGHT STANDARD SOFT
No. 52023
A
3
A
A
5. PRESE T
The items in the following table, it i s no requirement for adjustment.
If va lues had changed by t he miss operation, se t the initial settin g v alue s i n the following table.
Colour Sy stem Do No t Adju st
V-21DMT3/AV-21D
V-2135TEE/AV-2135EE
V-21DMG3
Setting item
1. C TRAP FIX 1 1 1 1
2. SHARP PEAK 0 0 0 0
3. A BL 1 1 1 1
4. GAMMA 0 0 0 0
TV 0 2 2 3
5. Y. DE LAY TIME
VI DEO 0 2 0 2
6. BL ACK EX P ST ART
TV 1 1 0 0
7. C-BPF
VI DEO 1 1 1 1
8. CW / SCP 0 0 0 0
9. VIF DET LEVEL 0 0 0 0
11. IF AGC MIN 0 0 0 0
12 . VIF AGC 0 0 0 0
13. VIF PM OD 0 0 0 0
19 . VN R 15 15 15 15
PA L SE CAM NT SC 3.5 8 NT SC 4.4 3
+3 +3 +3 +3
Initial set ting v al ue ( Fixed value)
20 . R GB LIM 1 1 1 1
21. RGB LIMIT LEVEL 2 2 2 2
23. TEXT H. POSITION -3 -3 -3 -3
24. READ DATA
Sound System D o Not Ad j u s t
Setting item B/G I D/K M
10. SIF DET LEVEL 0 0 0 0
14. SIF BPF BW ADJUST
15. SIF TRAP FO ADJUST 0 0 0 0
16. SIF TRAP FO ADJUST 2 0 0 0 0
17. SIF -TRAP 0 0 0 0
18. SIF -BPF 1 0 0 0
22 . SIF SW 0 1 1 1
0
0
0
0
No. 52023
13
A
V-21DMT3/AV-21D3
A
A
V-2135TEE/AV-2135EE V-21DMG3
REPLACEMENT OF IC301 (IF V/C DECODER)
" For the IC301(IF V/C DECODER) of this mode l, a ll data are written in the micro-computer. So, wri te the data in the micro-
computer in accordance with the following procedures before starting adjustment.
PROCEDURES
(1) Tur n the POWE R O F F. (2) Replace t he IC301 with a n ew o ne.
(3) While pr es sing MENU bu tto n a nd VO L+ bu tton ON the FRONT C ABINET si m ulta ne ous l y, t urn th e POW ER ON . Whe n the POW ER is
turn ed ON, th e d at a is w ritten in the m icro-compute r immed iately.
LOCATIONS OF FRONT PANEL BUTTONS AND LAMPS
MENU buttons
1
2
CHANNEL -/+ bu tto ns
(ME NU -/+ bu tto ns)
1 2 3 4 5 6 7 8
VOLUME -/+ buttons
3
(MENU -/+ bu tto ns)
AI ECO sensor
4
REMOTE CONTROL sensor
5
ON TIMER lamp
6
POWER lamp
7
MAIN POW ER button
8
14
No. 52023
A
3
A
A
SERVICE ADJUSTMENT
BEFORE STARTING SERVICE ADJUSTMENT
1. There ar e 2 w ay of ad ju s ti ng t hi s T V: One i s wi th th e REMOTE CONTROL UNI T and the other is the conventional
method using adjustment parts and components.
2. The adjustment with the REMOTE CONTROL UNIT is made on the basis of t he initia l se tting v alue s. The setting va lues
which adjust the screen to its optimum condition may differ from the initia l s etting v al ues.
3. M ake s ure th at conn ec t i on i s c orrect l y made t o AC p ower source.
4. Turn on t he power of th e se t an d equipment bef ore us e, an d start t he adju stm en t proc edure s af ter waitin g at least 30 min utes.
5. Unless ot her w i se s pec if ied, pr ep are th e mo st sui table rec eption or inp ut si gn al for adj ust m ent.
6. N ev er t ouch a ny adjus tme n t part s, whi ch ar e n ot spe cif ied in the li st for thi s ad justme nt VR s , transforms, c onde nser s,
etc.
7. Pr ep arati o n f or ad justmen t Unless otherwise specified in the adjustment instructions, preset
the following functions with the REMOTE CONTRO L UNIT.
User mode position
PICTURE MODE (VSM) BRIGHT
VNR OFF
TINT / COLOUR / BRIG HT CONT. / SHARP
BLUE BA CK OFF
OFF TIMER OFF
AI ECO S ENSOR OFF
AUTO S HUT O FF OFF
V-21DMT3/AV-21D
V-2135TEE/AV-2135EE
V-21DMG3
CENTER
MEASURING INSTRUMENT AND FIXTURES
1. DC voltmeter (or digital voltmeter)
2. Oscilloscope
3. Si gn al g ener at or (P att er n g ener at or) [ PAL / S EC AM / N T S C]
4. Remote control unit
ADJUSTMENT ITEMS
Adjustment it em Adjustment it em
B1 POW E R SUPPLY
FOCUS adjustment VSM PRESET setting
IF ci rc uit a djust me nt
V/C (Video / Chroma) circuit adjustment
DEFLECTION c ircuit adjustment
PURITY/ CO NV ER GEN C E adj us tm ent
No. 52023
15
A
V-21DMT3/AV-21D3
A
A
3
V-2135TEE/AV-2135EE V-21DMG3
BASIC OPERATION OF SERVICE MENU
"
The adjustment using SERVICE MENU
The f ol l owing adjus tment i t ems u s e t he SE RV IC E M EN U in th e s er i es of the adj u stm ent . The ad ju stm ent s ar e m ade on the bas is of the initial s e tting val u es. The ad ju stm ent valu es whic h ad ju st t he s cr een to the o pti m um co ndit io n c an be diffe rent from the i n iti a l sett in g values.
With th e SER VICE ME NU, various s ett in gs c an be made , a nd the y are broa dl y c l ass ifi e d i n the f ollo win g ite ms of s etti n gs.
1.I F ・・・・・・・ ・・・・・・・・・・・・・ ・・・ Adjustm ent of the IF circuits.
2.V /C ・・・・・・・・・・・・・・・・・・・・・・ Ad ju stm en t of th e VIDEO /C H RO MA c ircui t.
3.DEF ・・・・・・・・・・・・・・・・・・・・ ・ Ad justmen t of th e DEFLECTION circuit.
4.V SM PRES ET ・・・・・・・ ・・・・・ Ad justment of the ini t ial sett in g va lue s of VSM c o nd it ion as STA NDA RD, SOFT a nd BRIGH T.
(VSM : Video Status Memory)
5.PRESET
6.TURBO TIMER OFF ・・・・・・・ For qu i ck set ting the TIMER co unt val u e, adjus tabl e not only by m i nue ts b ut also b y sec on d.
"
Key operation of the SERVICE MENU
[Enter to SERVICE MENU]
Press the DI SPLAY key and the PICTURE MODE key of the REMOTE CONTROL
UNIT s imult an eou sly. Th en enter the S ERVICE ME N U mod e as sh own in Fig.1 .
[Exit from SERVICE MENU]
When co m plete th e ad j ust me nt wor k , pr ess th e DISPLA Y key to retur n t o th e
SERVICE MENU. An d th en pr es s the DISPLA Y ke y ag ain, retur n to the n or m al sc r een .
[ Se lec t fr o m SE RV IC E ME NU ]
In SER VI CE M ENU, pr ess t he n umber ( 1 6) ke y of th e r emo te c ont ro l un it , to select
an y of th e ad j ustm en t ite ms.
The colours w hi ch se le cte d i te m charact ers a r e ch ang ed .
・・・・・・・ ・・・・・・・・・・
Adjustment of the RF circ uit [Do not adjust].
[Should be OFF].
SE RVICE M EN U
1.IF 2.V/C .DEF 4.VSM PRESET
5.PRES ET
6. TURB O T I MER O F F
1-6 SELECT DISP : EXIT
******
***********
***** **
************
**********
*** ** **
*** ** **** ***
*** ** ***** ** **
**.***
****
** ***
** ***** ***
***
******
Fig.1
KEY ASSIGNMENT OF REMOTE CONTROL UNIT
DI SPL A Y k ey
MENU
/ k ey
PICTURE
MO DE k e y
MENU
key
▼/▲
NUMBERS
key
(RM-C90)
KEY ASSIGNMENT OF REMOTE CONTROL UNIT
DI SPL A Y k ey
MENU
/key
PICTURE
MO DE k e y
NUMBERS
key
MENU
/ key
(RM-C364GY)
16
No. 52023
A
3
A
A
[Method of setting]
1. IF
[1. VCO]
1 K ey ・・・・・・・ ・・・・・・・・・・・・・ ・・・・・ Select 1.IF. 1 K ey ・・・・・・・ ・・・・・・・・・・・・・ ・・・・・ Select 1.VCO The VCO (CW) screen will be displayed a allow mark when the AFC voltage is at a certain level. DISPLA Y K ey・・・・・・・ ・・・・・・・・・・・ As you press this key twice, you will return to the SERVIC E M E NU.
[2. DELA Y P OINT]
1 K ey・・・・・・・ ・・・・・・・・・・・・・ ・・・・・ Select 1.IF.2 K ey・・・・・・・ ・・・・・・・・・・・・・ ・・・・・ Select 2 .DELAY P OINT.ME NU - /+ K ey ・・・・・・・ ・・・・・・・・・・ Set ( adjust) the setting values of the setting it ems. DISPLAY Key・・・・・・・・・・・・・・・・・・ When this is press e d t wice, you w i ll r et urn t o t he SE RV ICE MENU .
2.V /C, 3.D EF an d 4.V SM PRES ET
① 2~4Key ・・・・・・・・・・・・・・・・・・・・ ・・・ Select one from 2. V/C, 3. DE F an d 4. VSM PR E SET. ② MENU ▼/▲ Key ・・・・・・・・・・・・・・ Select setting items. ③ MENU -/+ Key ・・・・・・・ ・・・・・・・・・・ Adju st th e v a l ues of t he i tems . ④ DISPLA Y K ey ・・・・・・・ ・・・・・・・・・・・ W hen th is is pr esse d, re turn t o the SE R VICE MENU .
V-21DMT3/AV-21D
V-2135TEE/AV-2135EE
V-21DMG3
6.TURBO TIMER
B y pressing th e 6 key, you can chang e t he ON or OFF ( should be OFF).
(Should be OFF)
%
If it is ON , th e timer i n TIME R m ode ch ang es f r om 1 m i nu te in to 1 s ec te mp or ar i ly.
(I t is e asier to checks the Operation of TIME R)
If you turn t he TV p ower off, this s etting b ecomes OFF automatically.
No. 52023
17
A
V-21DMT3/AV-21D3
A
A
JUS
6.TURBO
ON /
(By p
y)
G
(R)
S
U
O
V-2135TEE/AV-2135EE V-21DMG3
SERVICE MENU FLOW CHART
SE RVICE M EN U
ERVICE MEN
1.IF 2.V/C
3.DEF 4.VSM PRESET
5.PRESET
6. TUR BO TI MER OF F
1-6 SELECT DISP : EXIT
******
****** *****
***** **
************
**********
*** ** **
*** ** ** ** ***
*** ** ***** ** **
TIMER
**.***
****
** ***
** ***** ***
FF
OFF
***
******
ressing 6-ke
SU B ME NU 1. I F
IF
1. VCO
2. DELAY PO INT
1-2 : SELECT DISP : EXIT
SU B ME NU 2. V /C
V/C PAL
1. CUTOFF
50Hz
/ :SELECT
- / + : OPERATE DISP : EXIT
(G) (B)
* **
* **
* **
VCO (CW)
TOO HIGH ABOV E REFERENCE
BELOW REF ERENCE TOO LOW
AFT ADJUST VCO ADJUST
FINE
DELAY POINT UHF
AGC TAKE- OVER
- / + : OPERATE DI SP : EXIT
***.**
T REFERENCE
MH z
** *(* *)
** *(* *)
** *(* *)** *(* *) ** *(* *)
** *(* *)
** *(* *)** *(* *)
DISP : EXIT
**
SU B ME NU 3. D EF
DEF
1. VER. POSITION
50Hz
/ :SELECT
- / + : OPERATE DISP : EXIT
PAL
***
SUB ME NU 4. V SM PR ES ET
BRI GHT
TINT COLO UR
HT
BRI CONT. SHARP
/ :SELECT
- / + : OPERATE DISP : EXIT
** **
** **
**
SUB ME NU 5. P RE SET
PRESET
1. C -TRAP FI X
50Hz
/ :SELECT
- / + : OPERATE DISP : EXIT
18
PAL
No. 52023
B/ G
***
A
3
A
A
ADJUSTMENT LOCATIONS
)
)
(SO
)
V-21DMT3/AV-21D
V-2135TEE/AV-2135EE
V-21DMG3
PW
TOP
MAIN PWB
F901
CRT SOCKET PWB
TP-47R/G
TP-47G/R
T
IC701
LDE R SIDE
U
TP-47B
TP-E
E1
CR T E ARTH WI RE (BR AIDED ASS'Y)
FRONT
IC702 MEMORY IC
DEG
S
TU 001
IC301
T
1
S
1Pin TP-91(B1 2Pin NC 3Pin X-ray1
4Pin X-ray2 5Pin TP-E(
HV
U
HVT
UPPER:FOCUS LOWER:SCREEN
No. 52023
19
A
V-21DMT3/AV-21D3
A
A
)
adjust
V-2135TEE/AV-2135EE V-21DMG3
ADJUSTMENTS
B1 POW ER SUPPLY
Item
Check of B1 Powe r
Measuring
instrume nt
Signal generator
Supply
DC Vo lt ­meter
FOCU S ADJUSTMENT
Item
Ad j ust men t of FOCUS
Measuring
instrume nt
Signal generator
IF CIRCUIT ADJUS TMENT
Item
Measuring
instrume nt
Test point Adjustment part Description
TP-91 ( B1)
####
TP-E (
)
1. Inp ut a wh ol e black sig na l.
2. Connect a DC voltmeter to TP-91(B1) and TP-E (#).
3. M ake sur e t hat th e v olt ag e is D C 1 16.5±2.0 V.
Test point Adjustment part Description
FOCUS VR
[In HVT]
1. Input a cross-hatch signal.
2. W hil e watch i ng the scre en, adjust the FOCUS VR to make th e
ver ti cal and ho ri zonta l l ines as f in e a nd sha rp as possi b le.
3. M ake sur e t hat whe n th e scre en is d arken ed, the li nes remain in
g ood focu s.
Test point Adjustment part Description
Ad j ust men t of VCO(CW
Signal generator
Remote control unit
VCO (CW)
TOO HIGH AB OVE REFEREN CE
JU ST REF ER ENCE BEL OW R EFERE N CE TOO LOW
AFT AD JUST VCO ADJUST FINE
DISP : EXIT
ADJUSTMENT AT THIS POINT IS USELESS
***.**
MHz
** *(* *)
** *(* *)
** *(* *)** *(* *) ** *(* *)
** *(* *)
** *(* *)** *(* *)
ADJUSTMENT POINT
1. VC O
YE LLOW
Do not
TOO HIGH
ABOVE REFERENCE
J US T R E FE RE NC E
B ELO W RE F E RE NC E
TOO LOW
Please use signal generator which is correct proof about the
sen ding fr eque nc y.
1. Inp ut the PA L f ull col o ur b ar (2 10 .25MH z) si g nal .
2. En ter th e SER VICE MENU.
3. Se lect 1.IF f rom the SERV ICE MEN U.
4. Press 1 key and s elect 1.VCO.
5. Select VCO ADJ US T with MENU ▲/▼ key.
6. Press MENU -/+ key un til the colour of the chara cters TOO HIGH ch an ges b lue to ye llow. Then g r ad ually pr ess th e MENU
-/+ key u ntil the TOO LOW ch ang es yellow . At thi s t im e, conf irm th at t he val u e of VCO ADJUST is n ear + 00 .
7. Select AFT ADJUST with MENU ▲/▼ key.
8. Press MENU -/+ ke y until the characters JUST REFERENCE ch ang es bl ue to y ellow.
9. Press the DISPLA Y key three times to return to normal screen.
20
No. 52023
A
V-21DMT3/AV-21D
3
A
A
(
)
(
)
(
)
V-2135TEE/AV-2135EE
V-21DMG3
Item
Ad j ust men t
of DELAY
POI NT
(AGC)
Measuring
instrume nt
Signal generator
Remote control unit
DELAY POINT UHF
AGC TA KE-OVER
- / + : OPERATE DISP : EXIT
Test point Adjustment part Description
**
DELAY P OINT
(AGC TAKE-OVER)
1. Inp ut a bl ac k an d wh it e s ign al (col o ur of f).
2. En ter th e SER VICE MENU.
3. Select 1. IF f rom t he SERVI CE M EN U.
4. Select 2 . D ELAY POINT b y pressing th e 2 key on the remote
control unit.
5. Se t th e set ting val u es of the s et ting items as s hown bel l o w t able .
6. Then adjust the MENU - or + key until video noise disappears.
7. T ur n to oth er c h an nel s and m ak e su r e th at the re are n o
irregularities.
Setting It e m Variabl e range Initial se tting v alue
DELAY P OINT
(AGC TAKE OVER)
NT SC 3.5 8
OTHER
0127
MATSUSHITA QAU0287-001
45 45 45
35 45 35
MURATA
QAU0185-004
ALPS
QAU0282-001
No. 52023
21
A
V-21DMT3/AV-21D3
A
A
(B)
V-2135TEE/AV-2135EE V-21DMG3
VIDEO / CHROM A CIRCU IT ADJUSTMENT
The setting (adjustment) using the REMOTE CONTROL UNIT is made on the basis of the initial setting values.
The setting values which adjust the screen to the optimum condition can be different from the initial setting values.
Do no t c hange the init ial setting values of the set ting it ems not list e d in “ADJUSTMENT”.
Item
Ad j ust men t
of WHITE
BALANCE
(Low light)
Measuring
instrume nt
Test point Adjustment part Description
Signal generator
Remote control unit
V/C PAL
1. CUTO FF
50Hz
/ :SELECT
- / + : OPERATE DISP : EXIT
(R) (G)
(B)
* ** * **
* **
KEY ASSIGNMENT OF REMOTE CONTROL UNIT
CU TO FF O F F
(H.LINE OFF)
CU TO FF O N
(H.LINE ON)
R. CUTOFF( )
R. CUTOFF( )
▲ ▲
R. DRI VE( )
R. DRI VE( )
123
4
7
56
8
9
RGB
1. CUT OFF (R)
CUT OFF (G)
CUT OFF (B)
SCREEN VR [IN HVT]
G .C UTOFF ( )
B. C UTO FF( )
B. D RIV E( )
B. C UTO FF( )
B. D RIV E( )
G .C UTOFF ( )
▲ ▲
1. Inp ut a bl ac k an d wh it e s ign al (col o ur of f).
2. En ter th e SER VICE MENU.
3. S elect 2. V/C from th e SERVICE MENU, the n selec t 1. CUT OFF
(R), (G) and (B) .
4. Set each value to initial setting value with 4~ 9 keys of the
remote control unit.
5. Press the 1 key of th e remote co ntr ol un i t to show th e single
horizontal line on screen.
6. T ur n t he SCREEN VR fully counter-clockwise, then slowly turn it
cl ockw is e to where on e of a red, bl u e or gr e en c o l our is faint l y
vis ible.
7. Use keys 49 of th e remote contr o l u ni t an d adjust the oth er 2
col o ur s which e x cept th e ap pea r ed col o ur to where th e s in gle
h oriz o nt al line app ea rs wh it e.
8. Turn the SCREEN VR to where t he sin gle h or iz ont al line g lows
fain tly.
9. Press the 2 ke y to turn off the sin gle hori zon tal line .
10. Press the DISPL AY key t wice to retu rn to the nor mal scr een.
Adjustment it em
R
G
Variabl e
range
-128 +127
-128 +127
Initial set ting
value
-50
-501. CUT OFF
B -128~+127 -50
Ad j ust men t
of WHITE
BALANCE
(Hi gh light)
Signal generator
Remote control unit
2. DRI VE (R
DRI VE ( B)
)
1. Inp ut a bl ac k an d wh it e s ign al (col o ur of f).
2. En ter th e SER VICE MENU.
3. S elect 2. V/C from th e SERVICE MENU.
4. Select 2. DRIVE (R) / (B) with MENU ▼/▲ key, and set each
val u e to ini tial setti ng val u e with 4 and 7 or 6 an d 9 k eys of th e
remote control unit.
5. Use th e keys 4 and 7 or 6 and 9 t o p ro duc e a white scr een
V/C PAL
* **
2. DRIVE
50Hz
/ :SELECT
- / + : OPERATE DISP : EXIT
(R)
* **
22
6. Pr ess the DISPLAY key twice to return to the nomal scree n.
Adjustment it em
Variabl e
range
R -128~+127 +0
2. DRIVE
B
-128 +127
No. 52023
Initial set ting
value
+0
A
V-21DMT3/AV-21D
3
A
A
V-2135TEE/AV-2135EE
V-21DMG3
Item
Ad j ust men t
of
SUB BRI GHT
Ad j ust men t
of
SUB CONT.
Ad j ust men t
of
SUB COLOUR ⅠⅠⅠ
Measuring
instrume nt
Remote control unit
Remote control unit
Remote control unit
Test point Adjustment part Description
3. BR IG HT 1. Receive any bro adc ast.
2. En ter th e SER VICE MENU.
3. Select 2. V/C f rom S ERVICE MENU.
4. Select 3. BRI GHT with the MENU ▼/ key.
5. Set the initial setting value with the MENU - / + key.
6. If the brightness is not the best with the initial set value, make
fine adjustment until you get the best brightness.
4. CONT . 1. R ecei v e an y bro adc ast.
2. En ter th e SER VICE MENU.
3. Select 2. V/C f rom S ERVICE MENU.
4. Select 4. CONT. with the M ENU ▼/▲key.
5. Set the initial setting value with the MENU - / + key.
6. If the co ntrast is no t t he best with th e initial s et value, m ak e f ine
adjustment until you get the best contrast .
5. COLOUR [Method of adjustm ent without measuring instrument]
PAL COLOUR
1. R eceive a PAL broa dcast.
2. En ter th e SER VICE MENU.
3. Select 2. V/C f rom t he SERVI C E M EN U.
4. Select 5. COLOUR with the MENU ▼ /▲ key.
5. Se t the initi a l setting value for PAL COLO UR with the MENU
- / + key.
6. If the c o l our i s not th e best with th e i n iti a l s et val u e, mak e fin e
adjustment until you get the best colour.
SECAM COLOUR
NTSC 3.58 COLOUR
NTSC 4.43 COLOUR
1. R eceive a SEC AM br oadc ast.
2. M ake fine ad ju stm en t of SE CA M CO LOUR as previousl y.
1. R eceive a NTS C 3.58MHz br oa dcast.
2. M ak e si m ila r fi n e ad ju stm ent of NTSC 3.58 CO LOU R as
previ ously .
When NTSC 3.58 adjustment completed, NTSC 4.43 will be
automatically set at t he resp ective values.
No. 52023
23
Loading...
+ 33 hidden pages