JVC AV-20N3/D - Manuals

JVC AV-20N3/D – Manual in PDF format online.

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Manual

Manual JVC AV-20N3/D

Summary

Page 2 - SPECIFICATIONS; Design and specifications ar e subject to change w ithout notice.

No. 52025 AV-20N3 AV-20NMG3 AV-20NMG3B 2 SPECIFICATIONS CONT ENTS ITEM AV -20 N3 AV -20 N3 /D AV -20 NMG3 AV -20 NMG3 B AV -20 NMG3 /-A Dimensio ns(W × H × D) 619mm × 458mm × 488mm M ass 19kg TV RF Syst em B/G, I, D/K B/G, I, D/K,M RF Mode PAL / SECAM PAL / SECAM / NT SC3.58 / NT SC4 .43 Co lour Sys...

Page 3 - SAFETY PRECAUTIONS

No.52025 AV-20N 3 AV-20NMG3 AV-20NMG3B 3 SAFETY PRECAUTIONS 1. The d esign of th is prod uct con ta in s sp ecial hard wa re , ma ny circu it s an d compo ne nts spe cially fo r saf ety purp oses. Forcon tinu ed prot ection , n o chan g es sh ou ld b e ma de to the o rig inald esign un less a uth or...

Page 4 - FEATURES; SY STEM BLOCK DIAGRAM

No. 52025 AV-20N3 AV-20NMG3 AV-20NMG3B 4 FEATURES " New ch assis d esign en ables us e of an int eractive on-scree n c ont ro l. " W ide ran ge volt age (1 10V ～ 2 40V ) AC p ower inp ut. " W ith AUDIO / VI DE O INPUT & OUTPUT te rmina l. " MUTING but ton can red uce th e a udio ...

Page 5 - FUNCTIONS; FRONT PANEL

No. 52025 AV-20N 3 AV-20NMG3 AV-20NMG3B 5 FUNCTIONS ■ FRONT PANEL ■ REAR TERMINAL ME NU bu tton s CHA NNE L － / ＋ b utto ns VOL UME － / ＋ bu tto ns AI ECO sen sor RE MO TE CONTROL s ens or ON TIMER lamp POW ER lamp MA IN POW E R butt on A/V INPUT t ermin al HE ADPHONE jack 1 2 3 4 5 6 7 8 9 10 10 9 ...

Page 6 - REMOTE CONTROL UNIT

No. 52025 AV-20N3 AV-20NMG3 AV-20NMG3B 6 ■ REMOTE CONTROL UNIT E xce pt f or d if feren ce in bo dy co lour, t he Remote Cont rol Unit RM-C3 64G Y a nd RM-C36 4 h ave exa ctly th e sa me Func tions. ECO S ENSOR ke y SOUND SYS TEM key COLO UR SY STEM ke y TV/V IDEO ke y OFF TIMER key CHA NNE L SCAN k...

Page 7 - MAIN DIFFERENCE LIST

No. 52025 AV-20N 3 AV-20NMG3 AV-20NMG3B 7 MAIN DIFFERENCE LIST Part Na me Model Name Mai n PW B Rem ote Control Unit Fr ont Cabinet Rating Label AV-20N3 SCG -1403A-H2 RM -C3 64GY-1H LC1 0438-027A-H LC2 0377-010B-H AV-20N3 /D SCG -1425A-H2 AV-20NM G3 SCG -1422A-H2 LC1 0438-029A-H AV-20NM G3B RM -C3 6...

Page 8 - SPECIFIC SERVICE INSTRUCTIONS; DISASSEMBLY PROCEDURE; REMOVING T HE REAR COVER

No. 52025 AV-20N3 AV-20NMG3 AV-20NMG3B 8 SPECIFIC SERVICE INSTRUCTIONS DISASSEMBLY PROCEDURE REMOVING T HE REAR COVER 1. Unp lu g t he po we r plu g.2. As sh own in f igure , remove t he 6 screws marked ! ! ! ! an d a screw marked " " " " . 3. W ithdra w t he rear co ver to wa rd you...

Page 10 - REPLACEMENT OF MEMORY ICs; PROCED URE FOR REPLACIN G MEMORY IC s

No. 52025 AV-20N3 AV-20NMG3 AV-20NMG3B 10 REPLACEMENT OF MEMORY ICs 1. MEMORY ICs This mod el u ses me mo ry I Cs. This me mo ry IC da ta are f or pro per opera tion of th e vide o a nd d eflect io n circuits.W hen rep la cing me mory ICs, b e su re to us e ICs writ ten with t he initial va lu es of...

Page 12 - INITIAL SETTING VALUE OF SERVIC E MENU

No. 52025 AV-20N3 AV-20NMG3 AV-20NMG3B 12 INITIAL SETTING VALUE OF SERVIC E MENU 1. Ad justment of the SE RVICE MENU is m ade on the bas is of the initial s etti ng va lues ; howev er, the new se tting va lues w hi ch se t the sc ree n in its optim um condition may differ from the i niti al setting....

Page 15 - SERVICE ADJUSTMENTS; BEFORE STARTING SERVICE A DJUSTMENT

No. 52025 AV-20N 3 AV-20NMG3 AV-20NMG3B 15 SERVICE ADJUSTMENTS BEFORE STARTING SERVICE A DJUSTMENT 1. There ar e 2 w ay of adjus ti ng thi s TV: One i s wi th the REMOTE CONTROL UNI T a nd the othe r is the conv entionalmethod using a djustment pa rts and components. 2. The adj ustment with the REMO...

Page 16 - BASIC OPERATION OF SERVICE MENU

No. 52025 AV-20N3 AV-20NMG3 AV-20NMG3B 16 BASIC OPERATION OF SERVICE MENU " The a djustment usi ng SERVI CE MENU The f ollowing adjus tme nt it ems u se t he SE RV ICE MENU in th e series of the adju stment . The ad ju stment s are made on the bas is of th einitial se tting valu es. Th e ad ju s...

Page 18 - SERVICE MENU FLOW CHAR T; OFF

No. 52025 AV-20N3 AV-20NMG3 AV-20NMG3B 18 SERVICE MENU FLOW CHAR T SE RV ICE MENU IF 1. VCO2. DELAY POINT 1-2 : SELECT DISP : EXIT SUB ME NU 1. I F VCO (CW) * ** .* * MHz TOO HIGH ABOVE REFERENCEJUST REFERENCE BELOW REFERENCE TOO LOWAFT ADJUST ** *(* *) ** *(* *) ** *(* *) ** *(* *) VCO ADJUST ** *(...

Page 19 - ADJUSTMENT LOCATIONS; FRONT; MAIN PWB

No. 52025 AV-20N 3 AV-20NMG3 AV-20NMG3B 19 ADJUSTMENT LOCATIONS S 1Pin T P- 91(B1)2Pin NC3Pin X-ray14Pin X-ray25Pin T P- E( ) HV T S 1 HV U I C3 0 1 M E M O RY I C I C7 0 2 I C7 0 1 F9 0 1 DE G TU 0 0 1 FRONT TOP MAIN PWB CRT SOCKET PWB (SOLDER SIDE) TP-4 7G/R E1 U T P W UPPER :FOCUSLOWER: SC REEN T...

Page 20 - ADJUSTMENTS; B1 POW ER SUPPLY

No. 52025 AV-20N3 AV-20NMG3 AV-20NMG3B 20 ADJUSTMENTS B1 POW ER SUPPLY Item Mea suring instrume nt Tes t point Ad justment part Des cription Check ofB1 Powe rSupply Signa lgener ator DC Volt-meter TP-91 ( B1)TP-E ( # # # # ) 1. Inp ut a wh ole black sig na l.2. Con nect a DC vo lt me ter t o TP-9 1(...

Page 22 - VIDEO / C HROM A CIRCU IT ADJUSTMENT

No. 52025 AV-20N3 AV-20NMG3 AV-20NMG3B 22 VIDEO / C HROM A CIRCU IT ADJUSTMENT The s etti ng (a djustment) usin g the RE MOTE CONTROL UNI T is made on the bas is of the initial setting v alue s. The s etti ng va lues whic h adjus t the sc ree n to the optim um condition ca n be differe nt fr om the ...

Page 25 - Cy

No. 52025 AV-20N 3 AV-20NMG3 AV-20NMG3B 25 Item Mea suring instrume nt Tes t point Ad justment part Des cription 6. TINT [Method of adjus tm ent without m ea suring instrume nt] NT SC 3.58 T INT 1. Inp ut a NTSC 3 .58 full f ie ld colo ur b ar signa l (75% white).2. En ter th e SERVICE ME NU.3. Se l...

Page 27 - DEFLECTION CIRCUIT ADJUSTMENT

No. 52025 AV-20N 3 AV-20NMG3 AV-20NMG3B 27 DEFLECTION CIRCUIT ADJUSTMENT " The re are 2 mod es of adju stment (s ettin g va lue) ------ ① 50 Hz mod e an d ② 6 0Hz mod e ----- de pe ndin g u po n th e kind of s ig na ls (vertic al freq ue ncy 5 0Hz / 60Hz). " W hen ad juste d in mod e ① , mo ...

Page 28 - VSM PRESET SETTING

No. 52025 AV-20N3 AV-20NMG3 AV-20NMG3B 28 Item Mea suringinstrume nt Tes t point Ad justment part Des cription ● ● ● ● Whe n the v ertic al linea rity ha s bee n dete riorated rem ark ably, perform the followi ng steps . 15 . Inp ut a cross -h atch sign al.16 . Se le ct 4 . VER. LIN. with th e MENU ...

Page 29 - PURITY / CONVER GENCE ADJUSTMENT; PURITY ADJUST MENT

No. 52025 AV-20N 3 AV-20NMG3 AV-20NMG3B 29 PURITY / CONVER GENCE ADJUSTMENT PURITY ADJUST MENT 1. Demag ne tize CRT wit h t he dema gn etizer. 2. L oose n th e re tain er screw of th e d eflec tion yoke . 3. Remove th e wed ge s. 4. Inp ut a g reen rast er sign al from the sign al ge nerat or, an d ...

Page 30 - STAT IC CON VERGENCE ADJU ST MENT; DYNAMIC C ON VERGENCE ADJU ST MENT

No.52025 AV-20N3 AV-20NMG3 AV-20NMG3B 30 STAT IC CON VERGENCE ADJU ST MENT 1. Inp ut a cross hat ch sig na l. 2. Usin g 4 -po le con verge nce magn ets , ove rla p t he re d a nd blu e lin es in th e cen ter of th e screen (Fig. 1) a nd tu rn the m tomag ent a (red/ blue ). 3. Usin g 6 -pole con ver...

Page 31 - REPLACEMENT OF C HIP COMPONENT; CAUT IONS

No.52025 AV-20N 3 AV-20NMG3 AV-20NMG3B 31 REPLACEMENT OF C HIP COMPONENT ! CAUT IONS 1. Avo id h eat in g f or more t ha n 3 seco nd s.2. Do n ot ru b t he elect ro des an d t he resist p arts of th e p att ern.3. W hen removing a c hip part, melt th e s older ad equ ate ly.4. Do n ot reuse a ch ip ...