JVC AV-14FTG User manual

AV-14FTG
No. 56078 1
MODEL NO.
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Model name
BASIC CHASSIS
CG
SERVICE MANUAL
COLOUR TELEVISION
AV-14FTG
AV-14FTG
COPYRIGHT  2000 VICTOR COMPANY OF JAPAN, LTD. No. 56078
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.
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)
Note: The page in parentheses shows the one for the AV-14FT service manual (No. 56077, Sep. 2000).
AV-14FTG

AV-14FTG
No. 560782
AV-14FT AV-14FTG
!!
!!
!REF. NO. PART NAME DESCRIPTION
PART No. PART No.
■EXPLODED VIEW PARTS LIST (Page 28)
1 LC10831-005A-H LC10831-007A-H FRONT CABINET
!17 LC20377-010B-H LC20377-001B-H RATING LABEL
■PRINTED WIRING BOARD PARTS LIST (Page 30)
— SCG-1252A-H2 SCG-1256A-H2 MAIN PWB ASSY
IC1701 MN1873287JA MN1873287JB IC (MICROCOMPUTER)
IC1702 AT24C08-21FTR AT24C08-21FM IC (MEMORY) (Service)
■PACKING PARTS LIST (Page 34)
1 GG10056-010A-H GG10056-011A-H PACKING CASE
!7 LCT0757-001A-H LCT0733-001A-H INST BOOK
!8 LCT0758-001A-H LCT0734-001A-H DIGEST MANUAL
PARTS DIFFERENCE TABLE
The different parts between AV-14FT and AV-14FTG are described below:

AV-14FTG
No. 56078 3
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
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 75ΩUnbalanced
Power Input AC110 ~ 240V, 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-C364-1H (Battery size : AA/R06/UM-3 ×2)
Design & specifications are subject to change without notice.

AV-14FTG
No. 560784
Setting item Setting value Setting item Setting value
SUB POWER ON PICTURE MODE (VSM) BRIGHT
CHANNEL POSITION 1 POSITION VNR OFF
OFF TIMER OFF
LANGUAGE ENGLISH
VOLUME Appropriate sound volume AUTO SHUTOFF OFF
TV/VIDEO TV ECO SENSOR OFF
ON SCREEN DISPLAY POSITION NUMBER DISPLAY BLUE BACK OFF
COLOUR SYSTEM AUTO PAL ON TIMER PR1 0:00
SOUND SYSTEM B / G CHILD LOCK OFF
SETTING OF SYSTEM CONSTANT SET (Page 7)
Table 1
USER SETTING VALUES (Page 7)
Table 2
Refer to OPERATING
INSTRUCTION
CHANNEL PRESET
SPECIFIC SERVICE INSTRUCTIONS
Setting item Setting contents Setting value
COLOUR TRIPLE
BILINGUAL NO
TUNER MU
ECO SENSOR YES
LANGUAGE E/R/A/F
B/B SOUND OFF
LOCK 180
COLOUR AUTO NO
QSS MINT
ALC NO
TEXT RATE 20
AMP TUNER NO
MULTI. TRIPLE PAL
YES NO
MU MA
YES NO
E/R/A/F E/A/F E/A E/F
ON OFF
YES 10 20 ... 230
250 240
YES NO
MINT MQSS
YES NO
10 20 40 80
YES NO

AV-14FTG
No. 56078 5
SERVICE ADJUSTMENTS
■Initial Setting Value
■IF CIRCUIT ADJUSTMENT -- Adjustment of DELAY POINT (Page 15)
■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 / +5bbb
: Do not adjust.
Variable Initial setting
range value
Setting (Adjustment) Item
DELAY POINT
(AGC TAKE-OVER) 0~127 43
Adjustment of SUB COLOUR-II (Page 18)
Adjustment of SUB TINT-II (Page 19)
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 part Description
6. TINT
NTSC 3.58 TINT Value (B) in the figure: Set to +7V (W & Cy).

AV-14FTG
No. 560786
■DEFLECTION CIRCUIT ADJUSTMENT (Page 20)
: Do not adjust.
■VSM PRESET ADJUSTMENT (Page 22)
VSM preset
VSM mode BRIGHT STANDARD SOFT
Setting item
TINT +15 bb
bb
bbb
bb
b
SETTING VALUE
COLOUR +15 bb
bb
bbb
bb
b
SETTING VALUE
BRIGHT +15 bb
bb
bbb
bb
b
SETTING VALUE
CONT. +30 +15 +11
SETTING VALUE
SHARP +15 +15 +12
SETTING VALUE
[Setting Values for SUB MENU 4. VSM PRESET]
Initial setting value
Setting item Adjustment name Variable range 50Hz 60Hz
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.
[SUB MENU 4. DEF]

AV-14FTG
No. 56078 7
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 b0 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 −3bbb
24. READ DATA
■PRESET ADJUSTMENT (Page 23)
[SUB MENU 5. PRESET]
: 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.

AV-14FTG
No. 560788 CTH 0009
CRT
AV14FTG-H #3
VICTOR COMPANY OF JAPAN, LIMITED
TELEVISION RECEIVER DIVISION 1106 Heta, Iwai-city, Ibaraki-prefecture, 306-0698, Japan