JVC AV-29R8BVT Service Manual

AV-29R8B

AV-29R8B

SERVICE MANUAL

COLOUR TELEVISION

BASIC CHASSIS

JK

AV-29R8B (VT)

This service manual mainly consists of the following items:

• The items which differ from those for the AV-29R8B(PH) service manual.

• The initial value for each setting item.
For details other than those described in this manual, please refer to the following service manual.
Reference Service Manual: AV-29R8B(PH) Service Manual (No. 51749, Jul. 2000)

Note: The page in parentheses shows the one for the AV-29R8B(PH) service manual (No. 51749, Jul. 2000).

HOW TO IDENTIFY MODEL

While referring to the illustration given below, identify model name on the rating label affixed to the rear cover.

Basic model name

AV-29R8B

MODEL NO.

XXXXX XXXXXXX
XXXXXXX XXXXX

XXXXXX

XXXXX

XXX XXXXX XXXXX

XXXXXXXXXXXXXXXXXXXXX
XXXXXXXXXXXXXXX
XXXXXXXXXXXXXXXXXXXXX

SERIAL No.

XXXX XX XXXX
XXX XX XXXX

XXXXXX–XXX

Identify model name

AV-29R8B-VT

COPYRIGHT  2000 VICTOR COMPANY OF JAPAN, LTD.

No. 56024 1

No. 56024
Sep. 2000

AV-29R8B

PARTS DIFFERENCE TABLE

The different parts between AV-29R8B(PH) and AV-29R8B(VT) are described below:

!!

! REF. NO. PART NAME DESCRIPTION

!!

AV-29R8B(PH) AV-29R8B(VT)
PART No. PART No.

■ EXPLODED VIEW PARTS LIST (Pages 35 and 36)

! 13 QMPR010-200-E2 QMP40D0-200J5 POWER CORD

or QMPR010-200-K2 or QMP40D0-200J3

! 16 CM23141-022 GG20001-015A-H RATING LABEL

100 LC10761-005B-HK LC10761-009B-HK FRONT CABI ASSY Inc. No. 101 - 107

■ PRINTED WIRING BOARD PARTS LIST [MAIN PWB ASSY] (Page 38-)

— SJK-1014A-H2 SJK-1016A-CK MAIN PWB ASSY
IC1701 M37280MF-173SP M37280MF-201SP IC (MICROCOMPUTER)
IC1702 AT24C16-29RSB AT24C16-29R9BBK IC (MEMORY) (Service)

■ PRINTED WIRING BOARD PARTS LIST [POWER & DEF PWB ASSY] (Page 41-)

— SJK-2008A-H2 SJK-2010A-CK POWER & DEF PWB ASSY

■ PRINTED WIRING BOARD PARTS LIST [CRT SOCKET PWB ASSY] (Page 43-)

— SJK-3001A-H2 SJK-3003A-CK CRT SOCKET PWB ASSY

■ PRINTED WIRING BOARD PARTS LIST [FRONT CONTROL PWB ASSY] (Page 44)

— SJK-8004A-H2 SJK-8007A-CK FRONT CONTROL PWB

ASSY

R8818 NRSA02J-103X CH MG R 10kΩ 1/10W J

■ PRINTED WIRING BOARD PARTS LIST [AV SEL. PWB ASSY] (Page 44-)

— SJK0S002A-H2 SJK0S007A-CK AV SEL. PWB ASSY

■ PACKING PARTS LIST (Page 47)

1 LC10661-004A GG10078-004A PACKING CASE

2 LC10769-004A LC10769-002A-H CUSHION ASSY 8 pcs. in 1 set

! 6 LCT0852-001A-H LCT0817-001A INST BOOK

7 CP30902-045(R) CM43936-001 POS/SERIAL LABEL

— CEAB005-00AJ1 MATCHING BOX

No. 560242

SPECIFICATIONS (Page 2)

Item CONTENTS

Dimensions (W × H × D) 732mm × 588mm × 508mm
Mass 52kg
TV RF System B, G, I, D, K, K1, M
Colour System PAL, SECAM, NTSC3.58, NTSC4.43
Receiving Frequency VHF (L) 46.25MHz ~ 168.25MHz

VHF (H) 175.25MHz ~ 463.25MHz
UHF 471.25MHz ~ 863.25MHz
CATV Mid (X-Z, S1-S10), Super (S11-S20), Hyper (S21-S41) bands receivable

Intermediate Frequency

VIF Carrier 38.0MHz
SIF Carrier 33.5MHz(4.5MHz), 32.5MHz(5.5MHz), 32.0MHz(6.0MHz), 31.5MHz(6.5MHz)

Colour Sub Carrier Frequency

PAL 4.43MHz
SECAM 4.40625MHz, 4.25MHz

NTSC 3.58MHz / 4.43MHz
Power Input Rating: AC110 ~ 240V, 50/60Hz Operating: AC90 ~ 260V, 50/60Hz
Power Consumption 225W (Max) / 156W (Avg)
Picture Tube Visible size : 68cm measured diagonally
High Voltage 32.0kV ±1.5kV (at zero beam current)
Speaker & Audio Output Closed dome speaker

20W+20W (10cm round x 2, +3.5cm round x 2)

Video Audio Input terminals

Video1 S-Video Y: 1Vp-p Positive (Negative sync provided, when terminated with 75Ω)

C: 0.286Vp-p (Burst signal, when terminated with 75Ω)

Video 1Vp-p 75Ω (RCA pin jack)

Audio (L/R) 500mVrms (−4dBs), High impedance (RCA pin jack)
Video2 Video 1Vp-p 75Ω (RCA pin jack)

Audio (L/R) 500mVrms (–4dBs), High impedance (RCA pin jack)
Video3 Video/Y Composite video 1Vp-p 75Ω (RCA pin jack)

Component video 1Vp-p 75Ω (RCA pin jack)

Cb Component video B-Y 0.7Vp-p 75Ω (RCA pin jack)

Cr Component video R-Y 0.7Vp-p 75Ω (RCA pin jack)

Audio (L/R) 500mVrms (–4dBs), High impedance (RCA pin jack)
Video4 S-Video Y: 1Vp-p Positive (Negative sync provided, when terminated with 75Ω)
(Front terminal) C: 0.286Vp-p (Burst signal, when terminated with 75Ω)

Video 1Vp-p 75Ω (RCA pin jack)

Audio (L/R) 500mVrms (−4dBs), High impedance (RCA pin jack)
Video Audio Output terminal

Video 1Vp-p 75Ω (RCA pin jack)

Audio (L/R) 500mVrms (−4dBs), High impedance (RCA pin jack)
Aerial Input Terminal 75Ω Unbalanced, Coaxial
Headphone Jack Stereo mini jack (3.5ø)
AV Compu Link terminal AV Compu Link II, mini jack (3.5ø)
Remote Control Unit RM-C111 (AA/R06 / UM-3 dry battery × 2)

AV-29R8B

Design & specifications are subject to change without notice.

No. 56024 3

AV-29R8B

SPECIFIC SERVICE INSTRUCTIONS

SETTING OF SYSTEM CONSTANT SET (Page 10)

Table 1

CONTENTS VARIABLE RANGE INITIAL SETTING VALUE

COLOUR MULTI
MSP NO
SUPER BASS YES
CENTER SPEAKER NO
TEXT NO
BLUE BACK MUTE NO
VOLUME LIMIT YES
COLOUR AUTO NO
TILT YES
C-TRAP 1
E.M.C. NO
N/S WHITE BACK NO
7 LED SPEED 100

LANGUAGE E/V

MULTI TRIPLE PAL
YES NO
YES NO
YES NO
YES NO
YES NO
YES NO
YES NO
YES NO
1 0
YES NO

YES NO
00 10 20 ... 1250

1270 1260

E/V E

USER SETTING CONDITIONS (Page 10)

Table 2

PICTURE SETTING FEATURES

PICTURE MODE BRIGHT SLEEP TIMER OFF
CONTRAST CENTER ON TIMER PR1 0:00
BRIGHT CENTER BLUE BACK ON
SHARP CENTER CHILD LOCK OFF
COLOUR CENTER CHANNEL GUARD -­TINT CENTER AUTO SHUT OFF OFF
WHITE BALANCE COOL VIDEO-3 SETTING COMPONENT

PICTURE FEATURES INSTALL

A.A.C ON LANGUAGE ENGLISH
AUTO VNR AUTO AUTO PROGRAM -­COLOUR SYSTEM TV: According to preset CH EDIT / MANUAL PRESET CH only

VIDEO: AUTO PAL Others: blank
ZOOM REGULAR DEMO
ECO SENSOR OFF DEMO OFF
PICTURE TILT CENTER OTHERS

SOUND SETTING VOLUME Appropriate sound level
BASS CENTER CHANNEL PRESET Refer to Operating Instructions.
TREBLE CENTER CHANNEL POSITION 1 POSITION
BALANCE CENTER SUB POWER ON
AI VOLUME ON ON SCREEN DISPLAY POSITION INDICATION
BBE ON TV/VIDEO TV
SPATIALIZER OFF SOUND SYSTEM B/G
SUPER BASS ON

No. 560244

SERVICE ADJUSTMENTS

■ Initial Setting Value

■ SETTING OF VSM PRESET (Page 19)

[INITIAL SETTING VALUES OF VSM PRESET (SUB MENU 5. VSM PRESET)]

PICTURE
MODE BRIGHT STANDARD SOFT
ITEM

1. BRIGHT +0 +0 +0

2. CONT +17 +0 −4

3. COLOR +0 +0 − 1

4. SHARP +0 +0 −3

5. TINT +0 +0 +0

: Do not adjust.

AV-29R8B

■ SETTING OF WHITE BALANCE PRESET (Page 20)

[SETTING OF WHITE BALANCE PRESET (SUB MENU 6. WB PRESET)]

WHITE BALANCE
ITEM

1. R DRIVE 0 −3 +26

2. B DRIVE 0 −23 −27

: Do not adjust.

COOL MID WARM

No. 56024 5

AV-29R8B

■ VIDEO / CHROMA CIRCUIT ADJUSTMENT (Page 20)

CONTENTS PAL SECAM NTSC 3.58 NTSC 4.43

R −60

1. CUTOFF G −60

B −60

2. DRIVE R +0

B +0

3. BRIGHT TV 0 +3 +1—

VIDEO −1 +2 +2—

COMPONENT −2

4. CONT TV −15 0 0 —

VIDEO 000—

COMPONENT +2

5. COLOUR TV / VIDEO +10 +18 +00

COMPONENT +8 +17

6. TINT TV +6 +6 +70

VIDEO +6 +6 +14 0

COMPONENT +60

7. BLACK OFFSET R-Y —0——

B-Y —0——

8. SHARP TV −14 −13 −12 —

VIDEO −8 −7 −9—

COMPONENT −10

: Do not adjust.

Adjustment of SUB COLOUR-II (Page 23)

Adjustment part Description

5. COLOUR

PAL COLOUR Value (A) in the figure: Set to −3V (W & G).
SECAM COLOUR Value (A) in the figure: Set to −5V (W & G).
NTSC 3.58 COLOUR Value (A) in the figure: Set to +3V (W & G).

Adjustment of SUB TINT-II (Page 24)

Adjustment part Description

6. TINT

NTSC 3.58 TINT Value (B) in the figure: Set to +4V (W & Cy).

No. 560246

AV-29R8B

■DEFLECTION CIRCUIT ADJUSTMENT (Page 26)

[DEFLECTION ADJUSTMENTS INITIAL SETTING VALUE (SUB MENU 4. DEF)]

Initial setting value

Setting item Adjustment name REGULAR ZOOM 16:9

50Hz 60Hz 50Hz 60Hz 50Hz 60Hz

1. V-SHIFT Vertical shift −5 −10+10 0

2. V-SIZE Vertical size +7 −1 +36 +35 −39 −39

3. SUBTITLE Subtitle 0 +1 −7 + 70 0

4. H-CENT Horizontal center −10 +5 −1 −10−1

5. H-SIZE Horizontal size −12 −1 −4 −40−1

6. EW-PIN Side pin correction −3 +1 −4 −4 +20

7. TRAPEZ Trapezoidal distortion correction +4 −20−10+1

8. EW.COR.L Corner pin correction Low side −20−1−1+1+1

9. EW.COR.H Corner pin correction High side −20 0 0+1+1

10. V.S-COR Vertical size correction +1300000

11. V-LIN Vertical Linearity +2 −1 −1 −1 +10

12. H-BLK-R Horizontal Blanking Right 0 0 0 0 +77 0

13. H-BLK-L Horizontal Blanking Left 0 0 0 0 + 20

14. V-EHT V size correction level caused by EHT change −400000

15. H-EHT H size correction level caused by EHT change −300000

16. EHT-GAIN Size correction gain caused by EHT change +300000

: Do not adjust.

■ AUDIO CIRCUIT ADJUSTMENT (Page 30)

[AUDIO ADJUSTMENTS INITIAL SETTING VALUE (SUB MENU 3. AUDIO)]

Setting item Variable range Fixed value

1. ERROR LIMIT 000H ~ FF0H 100H

2. A2 ID THR 00H ~ FFH 14H

3. BASS −17 ~ +17 +0

4. TREBLE −17 ~ +17 +0

: Do not adjust.

No. 56024 7

AV-29R8B

VICTOR COMPANY OF JAPAN, LIMITED

TELEVISION RECEIVER DIVISION 1106 Heta, Iwai-city, Ibaraki-prefecture, 306-0698, Japan

No. 560248

AV29R8BVT-CK #3

CTH 0009
CRT