JVC AV-14F7VT Service Manual

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SERVICE MANUAL

COLOUR TELEVISION

BASIC CHASSIS

AV-14F7(VT)

This service manual mainly consists of the following items:

• The items which differ from those for the AV-14FM 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-14FM Service Manual (No. 51753, Jul. 2000)

AV-14F7

Note: The page in parentheses shows the one for the AV-14FM service manual (No. 51753, 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-14F7

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-14F7-VT

No. 56098 1

No. 56098 Sep. 2000

AV-14F7

PARTS DIFFERENCE TABLE

The different parts between AV-14FM and AV-14F7(VT) are described below:

! REF. NO. PART NAME DESCRIPTION

AV-14FM AV-14F7(VT) PART No. PART No.

■ EXPLODED VIEW PARTS LIST (Page 32)

! V01 A34AGT15X PICTURE TUBE

A34JLL91X84 PICTURE TUBE ITC

! L01 QQW0093-001 CELD025-005J6 DEGAUSSING COIL

DY01 QQD0046-001 DEF YOKE 1 LC10831-002B-H LC10831-011B-H FRONT CABINET 10 CE42153-00AJ1 WEDGE ASSY (×3) 11 CE40305-00B PC MAGNET

! 16 CM12961-D01-VH CM12961-D01-KH REAR COVER ! 19 LC20377-001B-H GG20001-010A-H RATING LABEL

■ PRINTED WIRING BOARD PARTS LIST [MAIN PWB ASSY] (Page 34-)

— SCG-1017A-H2 SCG-1249A-CK MAIN PWB ASSY R1103 NRSA63J-100X CH MG R 10Ω 1/16W J

NRSA02J-820X CH MG R 82Ω 1/10W J

R1112 NRSA63J-100X CH MG R 10Ω 1/16W J

NRSA02J-220X CH MG R 22Ω 1/10W J

R1303 NRSA63J-101X CH MG R 100Ω 1/16W J

NRSA02J-221X CH MG R 220Ω 1/10W J

R1304 NRSA63J-101X CH MG R 100Ω 1/16W J

NRSA02J-221X CH MG R 220Ω 1/10W J

R1305 NRSA63J-101X CH MG R 100Ω 1/16W J

NRSA02J-221X CH MG R 220Ω 1/10W J R1347 NRSA02J-392X CH MG R 3.9kΩ 1/10W J R1348 NRSA02J-472X CH MG R 4.7kΩ 1/10W J R1369 QRE122J-394 C R 390kΩ 1/2W J R1528 QRE122J-471 C R 470Ω 1/2W J R1529 QRL039J-121 OM R 120Ω 3W J

QRG029J-271 OM R 270Ω 2W J C1317 NCB31EK-473X CH C CAP. 0.047µF 25V K

NCB21HK-473X CH C CAP. 0.047µF 50V K C1351 QCZ0121-102 C CAP. 1000pF 3kV Z C1352 QFZ0097-103 MM CAP. 0.01µF 1250V K C1354 NDC31HJ-271X CH C CAP. 270pF 50V J

NDC21HJ-221X CH C CAP. 220pF 50V J C1355 NDC31HJ-221X CH C CAP. 220pF 50V J

NDC21HJ-271X CH C CAP. 270pF 50V J

No. 560982

AV-14F7

! REF. NO. PART NAME DESCRIPTION

AV-14FM AV-14F7(VT) PART No. PART No.

■ PRINTED WIRING BOARD PARTS LIST [MAIN PWB ASSY] - Continued (Page 34-)

C1527 QFZ0199-224 MPP CAP. 0.22µF 250V J

QFZ0199-184 MPP CAP. 0.18µF 250V J C1530 QCB32HK-561 C CAP. 560pF 500V K C1582 QFZ0199-204 MPP CAP. 0.2µF 250V J

QFZ0199-184 MPP CAP. 0.18µF 250V J C1657 QCB31HK-103 C CAP. 0.01µF 50V K L1522 QQR1005-003 LINEARITY COIL L1551 QQLZ026-640 QQLZ018-670 HEATER CHOKE IC1701 MN1873287JB1 MN1873287JD1 IC (MICROCOMPUTER) IC1702 AT24C08-21PM AT24C08-14F7VT IC (MEMORY) (Service) J1006 QNN0281-002 PIN JACK TU1001 QAU0202-001 QAU0186-001 TUNER

■ PACKING PARTS LIST (Page 38)

1 LC10453-092A-H GG10007-010A PACKING CASE 4 RM-C364-1H RM-C367-1H REMOCON UNIT

! 6 LCT0733-001A-H LCT0768-001A INST BOOK ! 7 LCT0734-001A-H DIGEST MANUAL

8 CM47385-00B-H CM43936-001 POS/SERIAL LABEL (×2) — CEAB005-00AJ1 MATCHING BOX

No. 56098 3

AV-14F7

SPECIFICATIONS (Page 2)

Item Content

Dimensions (W × H × D) 462mm × 340.5mm × 375mm Mass 10kg TV RF System B / G, I, D / K, K1, M Colour System TV Mode PAL / SECAM / NTSC3.58 / NTSC4.43

VIDEO Mode PAL / SECAM / NTSC3.58 / NTSC4.43

Receiving Frequency VHF (VL) 46.25MHz ~ 168.25MHz

VHF (VH) 175.25MHz ~ 463.25MHz UHF 471.25MHz ~ 863.25MHz CATV ● Cable TVs of Mid (X-Z, S1-S10)

Super (S11-S20) & Hyper (S21-S41) bands receivable

Intermediate VIF Carrier 38.0MHz Frequency 31.5MHz (6.5MHz)

SIF Carrier 32.0MHz (6.0MHz)

32.5MHz (5.5MHz)

33.5MHz (4.5MHz)

Colour Sub Carrier Frequency PAL (4.43MHz)

SECAM (4.40625MHz / 4.25MHz) NTSC (3.58MHz / 4.43MHz)

Aerial Input Terminal 75Ω Unbalanced Power Input Rating: AC110 ~ 240V, 50/60Hz Operating: AC90 ~ 260V, 50/60Hz Power Consumption 70W (Max.) / 47W (Avg.) Picture Tube Visible size : 34cm measured diagonally High Voltage 22.5kV ± 1.5kV (at zero beam current) Speaker 5cm × 9cm Oval type × 2 Audio Output 3W (Monaural) Input Video 1Vp-p, 75Ω

Audio 500mVrms (−4dBs), High impedance

Output Video 1Vp-p, 75Ω

Audio 500mVrms (–4dBs), Low impedance

Headphone Jack Stereo mini jack (3.5ø) Remote Control Unit RM-C367-1H (Battery size : AA/R06/UM-3 × 2)

Design & specifications are subject to change without notice.

No. 560984

SPECIFIC SERVICE INSTRUCTIONS

SETTING OF SYSTEM CONSTANT SET (Page 9)

Table 1

Setting item Setting contents Setting value

AV-14F7

COLOUR MULTI. BILINGUAL NO TUNER MU ECO SENSOR YES LANGUAGE E/V B/B SOUND OFF

LOCK 180

COLOUR AUTO NO QSS MINT ALC NO TEXT RATE 20 AMP TUNER YES VNR NO

MULTI. TRIPLE PAL YES NO MU MA YES NO E/V E ON OFF

YES 10 20 ... 230

250 240 YES NO MINT MQSS YES NO

10 20 40 80

YES NO YES NO

USER SETTING VALUES (Page 9)

Table 2

Setting item Setting value Setting item Setting value

SUB POWER ON PICTURE MODE (VSM) BRIGHT CHANNEL POSITION 1 POSITION OFF TIMER OFF

CHANNEL PRESET

VOLUME Appropriate sound volume ECO SENSOR OFF TV/VIDEO TV BLUE BACK OFF ON SCREEN DISPLAY POSITION NUMBER DISPLAY ON TIMER PR1 0:00 COLOUR SYSTEM AUTO PAL CHILD LOCK OFF SOUND SYSTEM B / G PICTURE BOOSTER OFF

Refer to OPERATING INSTRUCTION

LANGUAGE VIETNAMESE AUTO SHUTOFF OFF

No. 56098 5

AV-14F7

SERVICE ADJUSTMENTS

■ Initial Setting Value

■ IF CIRCUIT ADJUSTMENT -- Adjustment of DELAY POINT (Page 17)

Setting (Adjustment) Item

DELAY POINT (AGC TAKEOVER)

NTSC3.58

Others

Variable Initial setting range value

0 ~ 127

■ V/C (VIDEO/CHROMA) CIRCUIT ADJUSTMENT (Page 17)

[SUB MENU 2. V/C]

Colour system Variable Initial setting value

Setting item range PAL SECAM NTSC 3.58 NTSC 4.43

1. CUT OFF (R / G / B) −128 ~ +127 −50 bbb

2. DRIVE (R / B) −64 ~ +63 0 bbb

3. BRIGHT −128 ~ +127 0 bbb

4. CONT. −64 ~ +63 0 bbb

5. COLOUR (P / S / N3 / N4) −64 ~ +63 0 bbb

6. TINT (N3 / N4) TV / VIDEO −64 ~ +63 0 / +80 / 0

7. SECAM BL ADJUST −32 ~ +31 0 bbb

8. SHARP TV / VIDEO −32 ~ +31 −15 / +5 bbb

9. AMP T. SHARP −16 ~ +15 0 bbb

: Do not adjust.

Adjustment of SUB COLOUR-II (Page 20)

Adjustment part Description

5. COLOUR

PAL COLOUR Value (A) in the figure: Set to +9V (W & G). SECAM COLOUR Value (A) in the figure: Set to +3V (W & G). NTSC 3.58 COLOUR Value (A) in the figure: Set to +7V (W & G).

Adjustment of SUB TINT-II (Page 21)

Adjustment part Description

6. TINT

NTSC 3.58 TINT Value (B) in the figure: Set to +5V (W & Cy).

No. 560986

■ DEFLECTION CIRCUIT ADJUSTMENT (Page 23)

[SUB MENU 3. DEF]

AV-14F7

Setting item Adjustment name Variable range

1. VER. POSITION Vertical center −4 ~ +3 −2 −3

2. HOR. POSITION Horizontal center −16 ~ +15 +1 +4

3. VER. HEIGHT Vertical height −64 ~ +63 −40 0

4. VER. LINEARITY Vertical linearity −32 ~ +31 +13 −3

5. VER. SCURVE Vertical scurve −32 ~ +31 −32 0

6. HOR. VCO ADJUST Horizontal VCO −64 ~ +63 0 0

: Do not adjust.

Initial setting value

50Hz 60Hz

■ VSM PRESET ADJUSTMENT (Page 25)

[Setting Values for SUB MENU 4. VSM PRESET]

VSM preset VSM mode BRIGHT STANDARD SOFT Setting item

TINT

SETTING VALUE

COLOUR

SETTING VALUE

BRIGHT

SETTING VALUE

CONT.

SETTING VALUE

SHARP

SETTING VALUE

+15

+30 +15 +11

+15 +15 +12

: Do not adjust.

No. 56098 7

AV-14F7

■ PRESET ADJUSTMENT (Page 26)

[SUB MENU 5. PRESET]

Colour system Initial setting value

Setting item PAL SECAM NTSC 3.58 NTSC 4.43

1. C-TRAP FIX 1 bbb

2. SHARP PEAK 0 b

3. ABL 1 b

4. GAMMA 0 bbb

5. Y.DELAY TIME TV 0 2 2 3 VIDEO 0 2 0 2

6. BLACK EXP START 3 bbb

7. C-BPF TV 1 b 0 b VIDEO 1 bbb

8. CW/SCP 0 bbb

9. V.IF DET. LEVEL 0 bbb

11. IF AGC MIN. 0 bbb

12. V.IF AGC 0 bbb

13. V.IF PMOD 0 bbb

19. VNR 15 bbb

20. RGB LIM. 1 bbb

21. RGB LIMIT LEVEL 2 bbb

23. TEXT H. POSITION −3 bbb

24. READ DATA

: Do not adjust.

TV RF system Initial setting value

Setting item B/G I D/K M

10. S.IF DET. LEVEL 0 bbb

14. S.IF BPF BW ADJUST 0 bbb

15. S.IF TRAP FO ADJUST 0 bbb

16. S.IF TRAP FO ADJUST 2 0 bbb

17. S.IF-TRAP 0 bbb

18. S.IF-BPF 0 bb 1

22. S.IF SW 1 bb 0

: Do not adjust.

VICTOR COMPANY OF JAPAN, LIMITED

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

No. 560988

AV14F7VT-CK #3

CTH 0009 CRT

JVC AV-14F7VT Service Manual

Specifications and Main Features

Frequently Asked Questions

User Manual

HOW TO IDENTIFY MODEL

PARTS DIFFERENCE TABLE

SPECIFICATIONS (Page 2)

SPECIFIC SERVICE INSTRUCTIONS

SERVICE ADJUSTMENTS