JVC AV29BF10EES, AV29BF10ENS, AV29BF10EPS Service Manual

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S
SERVICE MANUAL
COLOUR TELEVISION
AV29BF10ENS
AV29BF10ENS
AV29BF10EP AV29BF10EE

CONTENTS

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SPECIFICATIONS
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SAFETY PRECAUTIONS ・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・
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FEATURES・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・
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MAIN DIFFERENCE LIST
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SPECIFIC SERVICE INSTRUCTIONS ・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・
! SER VICE ADJUSTMENTS ・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・
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PARTS LIST
OPER ATING INSTRUCT IONS
STANDARD CI RCUIT DIAGRAM ・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・
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COPYRIGHT © 2002 VICTOR COMPAN Y OF JAPAN, LTD.
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No.51936 Mar. 2002
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V29BF10ENS
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V29BF10EPS V29BF10EES

SPECIFICATIONS

Content
ITEM
Dime nsions (WxHxD) 78.4 × 58.2 × 49.3 cm Weight 46.2 kg
TV RF S ys tem B/G B/G, L B/G, D/K, K1
TV Mode PAL PAL / SECAM
Colour System
Teletext Syst em Fastext / Toptext Stereo System German + NICAM
Tuning System Frequenc y Synt hesizer Tuning System Number Of CH memory position 100 ch
Receiving Frequency
Intermediate Fr equency
Colour Sub Carrier Frequency PAL (4.43 MHz ), SEC AM (4.43MHz), NT SC (3.58MHz/ 4.43M Hz ) Aer i al In put Terminal 75 Ohm Unbalanced Pow er I nput AC 220 ~ 240V, 50Hz
Pow er Cons um ption 150W(Max.) / 73W(Avg.) Pi cture Tube 29 inch measured diagonally
Hig h Vo l t a g e 29.5kV (in cut-off service mode) Speaker ( 77 ×1 28 mm ellips e type + Twe eter ) ×2
Audio Out put 12W + 12W
Input ( FRONT )
Output ( REAR )
Re m o te Control Un it VE-30015781 (RM-C85) , Battery size:AAA/R03 x 2
Vi deo Mode
VHF (VL) 46.25MHZ ~ 168.25MHz VHF (VH) 175.25MHz ~ 463.25MHz UHF 471.25MHz ~ 863.25MHz
CATV
VIF Carrier 38.9MHz
SIF Carrier
Video 1V p- p, 75 Ohm Au dio (L/R) 500 mVrms, High Impedance Video 1 Vp-p, 75 Ohm
Au dio (L/R)500 mVrms, Low Impedanc e
R ear Sid e
Front Side F AV (Video/Audio) Front Side
R ear Sid e
AV29BF10ENS AV29BF10EPS AV29BF10EES
PAL / NTSC 3.58 / NTS C 4.43
S1 -S 20 & S 21- S4 1 & S75-S79
32.4MHz (6.5MHz)
32.9MHz (6.0MHz)
33.4MHz (5.5MHz)
EXT 1 (Vi deo/A ud io/R GB) EXT 2 ( Vi de o/A ud io /S- VH S)Input Terminal
Headphone jack (Stereo mini jack 3.5∅) EXT 1 ( Vi d eo/Aud i o)Output Terminal EXT 2 (Video/Audio) (Selected TV, AV1 or AV3)
PAL / SECAM / NTSC 3.58 / NTS C 4.43
S1 -S 20 & S 21- S4 1
S1 -S 20 & S 21- S4 1 & S75-S77
Design & spec ifications are s ubjec t to change w ithout noti ce.
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21-pin Euro connector (S CART socket) : EXT 1 / EXT 2
(P-P= Peak to Peak, S-W= Sync tip to white peak, B-W= Blanking to white peak)
Pin
Si gnal Designation Matchi ng Value EXT 1 EXT 2
No .
1 AUDIO R output 500mVrms(Nominal),Low impedance
2 AUDIO R inp ut 5 00 mVrm s (Nominal),High impe dance ○○
3 AUDIO L output 500mVrms(Nominal),Low impedance
4 AUDIO GND
5 GND (B) ○○
(TV OUT )
(TV OUT )
○○
(TV/LINE OUT)
(TV/LINE OUT)
6 AUDIO L in pu t 500mVrm s (Nominal), High impedan ce
B-W
7B input
FUN CTO N SW
8
(SLOW SW)
9 GND (G )
10 - NC -
11 G input
12
- NC -
1 3 GND (R)
1 4 GND (YS) NC
1 5 R / C input
16 Ys input Low : 0 – 0.4, High : 1 - 3V, 75Ω○NC
1 7 GND(VIDEO output)
1 8 GND(VIDEO inpu t) ○○
19 VIDEO output
20 VIDEO / Y input 1V
700mV
Low : 0-3V, High : 8- 12V, Hi gh impeda nce
700mV
R : 700mV C : 300mV
1V
, 75Ω○
B-W
, 75Ω○
B-W
, 75Ω
P-P
, 75Ω
S-W
(Negative going s ync), 75 Ω
S-W
(Negative going s ync), 75 Ω○
○○
NC
○○
○○
(R/C)
○○
(TV)
NC
NC
(only C)
(TV/LINE OUT)
21 COMMON GND
○○
[Pin assignment]
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SAFETY PREC AUTIONS

1. The design of this product contains special hardware, many circuits and components specially for safety purposes. For continued protection, no changes should be made to the original
design unless authorized in writing by the manufacturer. Replacement parts must be identical to those used in the original circuits. Service should be performed by qualified personnel only.
2. Alterations of the design or circuitry of the products should not be made. Any design alterations or additions will void the manufacturer's warranty and will f urther relieve t he manufacturer of r es p onsi bil i ty for per s o na l i njur y or p r oper ty dam age r esul ting therefrom.
3. Many electrical and mechanical parts in the products have special safety-related cha ra cteristics. T hese ch aracteristics are often no t e v i den t f r om v is ua l i ns p ect i on n or c a n the pr o tec tio n affor ded by them neces s ar il y b e ob t ained b y us in g r ep l ac em en t com ponents ra t ed for hi g he r vo lt ag e, w att ag e, etc. R ep l acem ent
parts whic h have these special safety characterist ics are identified in the parts list of Service manual. Electrical
com ponents having such featur es are identified by shading on t he sche matic s and by (!!!! ) on the parts list in Service manua l. The us e of a substitute r eplacemen t which do es not
have the same saf ety characteristics as the recommended r epl ac em ent par t s h ow n i n th e par ts li st of Ser v i ce m anual m ay cause shock, fire, or other hazards.
4. Don't short between the LIVE side ground and ISOLATED
(NEUTRAL) side ground or EARTH side ground when repa iring.
Some model's p ower circuit is partly different in the GND. The diff erenc e of the GND i s sh own b y the LI VE si de GND, the ISO LAT E D(N EU TR AL) sid e GND a nd EA RTH si de GN D. D on't short b etw ee n the L I VE s i de GN D a nd I S O LATED(N EU T R AL)
side GND or EARTH side GND and never measure with a measuring apparatus (oscillosc ope etc.) the LIVE side GND and ISOLATED(NEUTRAL) side GND or EARTH side GND at the same time. If above no te will no t be kept, a fuse o r any parts will be bro k en .
5. If any repair has been made to the chassis, it is recommended that t he B1 setting should be checked or adjusted (See ADJUSTMENT OF B1 POWER SUPPLY).
6. T he hi gh v olt a ge applie d to th e pi c tu r e t u be mu s t c on for m wi t h th at sp ecified in S ervice m anual. E xcessive h igh volt age ca n cause an increase in X-Ray emission, arcing and possible component damage, t herefore operation under excessive high voltage conditions should be kept to a minimum, or should be
prevent ed. If s evere arc ing occurs, remove t he AC power immediately and determine the cause by visual inspection (incorrect installat ion, cracked or melted high vo ltage harness, p oor s o ld er i ng, etc.) . To m ai nt ai n t he p r ope r mi n im u m l e v el of sof t X- Ray em ission, c omponents in the high vol tage circui try including t he pict ure tu be must b e the exact r eplacem ents or
alternatives approved by the manufacturer of the complete product.
7. Do not c heck high voltage by drawing an arc. Use a high volt age meter or a high v oltage prob e wit h a V TVM . Discha rg e the
picture tube before attempting meter connection, by c onnecting a cl i p le ad to t h e gr ou nd f ra me a nd c onn ec ti n g t h e other end of t he le ad through a 10kΩ 2W resi s to r to the an od e but t on.
8. W hen se r vic e is r equ ir e d, ob ser v e the or i gi na l l ea d dr es s. E x tr a pr ecaut i on shou ld b e g i ve n t o as s ur e corr ec t l ea d dr ess i n the high voltag e circuit a rea. W here a s hort circuit h as occu rre d, th os e comp on ent s that i ndi ca t e ev idence of over heati ng s ho ul d
be replaced. Always use the manufacturer's replacement components.
9. Isolation Che ck
(Safety for Electr ical Shock Hazard)
After re-assembling the product, always perform an isolation check on the exposed metal parts of the cabinet (antenna
terminals, video/audio input and output terminals, Control knobs, metal cabin et, screwheads, e arphone jack, control sh afts, etc.) to be sure th e pr oduct is s afe to o per ate with out dan ger of el ectric al shoc k.
(1) Diele ctric Stre ngth Test
The i so l at ion be tw een t he AC pr im a ry c i rcu i t an d al l me tal p ar ts exposed to the us er, particularly any expos ed metal part having a r etu rn pat h to t he c hass is s ho ul d wi ths tand a vol tage of 3000 V A C (r.m.s.) for a perio d o f one s econd.
( . . . . W it hst an d a v o lt ag e of 1 100V A C ( r .m.s .) t o an ap pl i ance
r ate d up t o 12 0V, an d 3 000V AC ( r .m.s.) t o an appl i an c e r ated 200V or m ore , for a period of one s econd. ) This method of test requires a test equipment not generally found in the service trade.
(2) L eakage Curr ent Check
Plug the AC line c ord directly into the AC outlet (do not use a line isolation transformer during this check.). Using a "Leakage Current Tester", measure the leakage current from each exposed metal part of the ca bine t, p art icular ly any e xpos ed metal part having a return path to the chassis, to a known good earth
gr ou nd (w a ter pi pe, e tc .) . An y leak a ge c ur r en t m ust not e x ceed 0 .5m A AC (r.m.s. ). However, in tropical area, this must not exceed 0.2mA AC (r.m.s.).
"
" Alternate Check Method
""
Plug the AC line c ord directly into the AC outlet (do not use a line isolatio n tran sformer during t his che ck.) . Use an AC voltmeter havi ng 100 0 ohms per vol t or m ore sens it ivity in the fo llowing m ann er . C on nec t a 150 0 10W res istor par alle le d b y a 0 . 1 5µF
AC - ty pe capa c it or bet we en an expos ed metal part a nd a k no wn good e arth gr oun d (wa ter pi pe, etc.). Meas ure th e AC vo ltage across the resistor with the AC voltmeter. Move the resistor
connec ti on t o e ach ex p os e d me t al par t , parti c ul ar l y any exposed m etal p ar t hav i n g a r eturn pat h to t he chas s i s, and m easu r e t h e AC vol tage ac ro s s the resist or . N o w , re v er se t h e pl u g i n th e A C outlet and repeat each measurement. Any volt age measured must not exceed 0.75V AC (r.m.s.). This corresponds to 0.5mA A C (r.m.s.).
Howeve r, in tropica l are a, this mu st n ot exce ed 0 .3V AC ( r .m.s .). This c orrespo nds to 0.2 mA AC (r.m.s.).
AC VOL TM ETE R (HAVING 1000 Ω /V, OR MORE SE NSI TIV ITY)
0.15μF AC-TYPE
PL ACE THI S PRO BE
1500 10W
G OOD E AR TH GR O UN D
ON EACH EXPO SED MET AL PA RT
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FEATURES

V29BF10ENS
V29BF10EP V29BF10EE
1. It is a remote controlled col or television.
2. 10 0 pr og r am s fr om VH F , UH F b an ds or cabl e c ha nn el s can be preset.
3. It can tune cable channels.
4. Controlling the TV is very easy by its menu driven s ystem.
5. It has t w o Eur oc on nec t or s ock et s for e xt er n al d ev i ce (s u c h as video recorder, video games, audio set, etc.)
6. F r ont AV Input av ail abl e.
7. Stereo s ound s ystems (German + Nicam) are available.
8. Full function Teletext (Fastext, Toptex t).
9. It is possible to connec t headphone.
10. Direct channel access.
11. AP S (Automat ic Programming System).
12. All programs can be named.
13. Forward or backward automatic tuning. 14 . Autom at ic sou nd mu t e wh en no transmi ss i on .
15 . 5 mi nu t es af t er t he br o adc as ti ng ( c los ed ow n) , the T V s wit ch es
itself automatically to stand-by mode.

MAIN DIFFEREN CE LIST

MODEL No.
Parts Name
MAIN PWB VE-20082209 VE -20083311 VE-20082155
CRT SOCKET PWB VE-20062535 VE-20072781
AV29BF10ENS AV29BF10EPS AV29BF10EES
F CARTON BOX VE-50022390 VE-50022790 VE-50022788
INST BOOK VE-50022402 VE -50022856 VE-50022857
TV RF system B/G B / G, L B/G, D/K, K1
TV PAL PAL / SECAM
Colour system
Receiving Frequenc y
VIDEO
CATV
PAL NTS C 3.58 NTS C 4.43
S01-S41 S75-S79
PAL / SECAM NTS C 3.58 NTS C 4.43
B/G : S01- S41 / S75 - S79 L : S01-S41 / S75-S77
B/G : S01-S41 / S75 -S79 D/K : S01-S41
No.51936
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