JVC AV-14F4BK Service Manual

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Page 1

SERVICE MANUAL

COLOUR TELEVISION

BASIC CHASSIS

AV-14F4(BK)

This service manual mainly consists of the following items:

• The items which differ from those for the AV-14FT 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-14FT Service Manual (No. 56077, Sep. 2000)

AV-14F4

Note: The page in parentheses shows the one for the AV-14FT service manual (No. 56077, Sep. 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-14F4

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-14F4-BK

No. 56008 1

No. 56081 Sep. 2000

Page 2

AV-14F4

PARTS DIFFERENCE TABLE

The different parts between AV-14FT and AV-14F4(BK) are described below:

! REF. NO. PART NAME DESCRIPTION

AV-14FT AV-14F4(BK) PART No. PART No.

■ EXPLODED VIEW PARTS LIST (Page 28)

1 LC10831-005A-H LC10831-008A-H FRONT CABINET

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

or QMP40D0-200J3 or QMPR010-200-K2

! 17 LC20377-010B-H CM22960-073-H RATING LABEL

■ PRINTED WIRING BOARD PARTS LIST (Page 30)

— SCG-1252A-H2 SCG-1258A-BK MAIN PWB ASSY R1161 NRSA02J-102X CH MG R 1kΩ 1/10W J R1162 NRSA02J-122X CH MG R 1.2kΩ 1/10W J R1163 NRSA02J-222X CH MG R 2.2kΩ 1/10W J R1164 NRSA02J-221X CH MG R 220Ω 1/10W J R1165 NRSA02J-220X CH MG R 22Ω 1/10W J R1166 NRSA02J-821X CH MG R 820Ω 1/10W J R1771 NRSA02J-821X CH MG R 820Ω 1/10W J

NRSA02J-222X CH MG R 2.2kΩ 1/10W J R1773 NRSA02J-122X CH MG R 1.2kΩ 1/10W J C1161 NCB21HK-103X CH C CAP. 0.01µF 50V K C1164 NCB21HK-103X CH C CAP. 0.01µF 50V K C1165 NCB21HK-103X CH C CAP. 0.01µF 50V K C1166 NCB21HK-104X CH C CAP. 0.1µF 50V K D1705 L-132XND-T16 LED (ORG)

SLR-342MG-T16 LED (GRE) Q1161 2SC2412K/QR/-X CHIP TRANSISTOR Q1710 DTC124EKA-X DIGI TRANSISTOR IC1701 MN1873287JA MN1873287JC IC (MICROCOMPUTER) IC1702 AT24C08-21FTR AT24C08-21F4BK IC (MEMORY) (Service) CF1161 SFE5.74MC2 C TRAP CF1162 SFE5.74MC2 C TRAP TU1001 QAU0192-001 QAU0186-001 TUNER

No. 560082

Page 3

AV-14F4

! REF. NO. PART NAME DESCRIPTION

AV-14FT AV-14F4(BK) PART No. PART No.

■ PACKING PARTS LIST (Page 34)

1 GG10056-010A-H CP11434-062-H PACKING CASE 5 RM-C364-1H RM-C368-1H REMOCON UNIT

! 7 LCT0757-001A-H LCT0761-001A-H INST BOOK ! 8 LCT0758-001A-H DIGEST MANUAL

— ATEAB001-00A MATCHING BOX

No. 56008 3

Page 4

AV-14F4

SPECIFICATIONS (Page 2)

Item Content

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

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

Stereo System Bilingual in A2 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-C368-1H (Battery size : AA/R06/UM-3 × 2)

Design & specifications are subject to change without notice.

No. 560084

Page 5

SPECIFIC SERVICE INSTRUCTIONS

SETTING OF SYSTEM CONSTANT SET (Page 7)

Table 1

Setting item Setting contents Setting value

AV-14F4

COLOUR TRIPLE BILINGUAL YES TUNER MU ECO SENSOR YES LANGUAGE E/T 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/T 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 7)

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 BILINGUAL MODE I

Refer to OPERATING INSTRUCTION

LANGUAGE THAI AUTO SHUTOFF OFF

No. 56008 5

Page 6

AV-14F4

SERVICE ADJUSTMENTS

■ Initial Setting Value

■ IF CIRCUIT ADJUSTMENT -- Adjustment of DELAY POINT (Page 15)

Setting (Adjustment) Item

DELAY POINT (AGC TAKE-OVER)

Variable Initial setting range value

0 ~ 127 43

■ V/C (VIDEO/CHROMA) CIRCUIT ADJUSTMENT (Page 15)

[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 18)

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 +9V (W & G).

Adjustment of SUB TINT-II (Page 19)

Adjustment part Description

6. TINT

NTSC 3.58 TINT Value (B) in the figure: Set to +7V (W & Cy).

No. 560086

Page 7

■ DEFLECTION CIRCUIT ADJUSTMENT (Page 20)

[SUB MENU 4. DEF]

AV-14F4

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 22)

[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 +19 +14

+20 +20 +15

: Do not adjust.

No. 56008 7

Page 8

AV-14F4

■ PRESET ADJUSTMENT (Page 23)

[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. 560088

AV14F4BK-BK #3

CTH 0009 CRT