JVC AV-21P7EE Service Manual

AV-21P7EE

AV-21P7EE

SERVICE MANUAL

COLOUR TELEVISION

BASIC CHASSIS

CG-F

AV-21P7EE

This service manual mainly consists of the following items:

• The items which differ from those for the AV-21PM 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-21PM Service Manual (No. 56055, Aug. 2000)

Note: The page in parentheses shows the one for the AV-21PM service manual (No. 56055, Aug. 2000).

HOW TO IDENTIFY MODEL

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

Model name

AV-21P7EE

MODEL NO.

XXXXX XXXXXXX
XXXXXXX XXXXX

XXXXXX

XXXXX

XXX XXXXX XXXXX

XXXXXXXXXXXXXXXXXXXXX
XXXXXXXXXXXXXXX
XXXXXXXXXXXXXXXXXXXXX

SERIAL No.

XXXX XX XXXX
XXX XX XXXX

XXXXXX–XXX

COPYRIGHT  2000 VICTOR COMPANY OF JAPAN, LTD.

No. 56058 1

No. 56058
Aug. 2000

AV-21P7EE

PARTS DIFFERENCE TABLE

The different parts between AV-21PM and AV-21P7EE are described below:

!!

! REF. NO. PART NAME DESCRIPTION

!!

AV-21PM AV-21P7EE
PART No. PART No.

■ EXPLODED VIEW PARTS LIST (Page 30)

! 17 LC20377-010B-H LC20377-009A-H RATING LABEL

■ PRINTED WIRING BOARD PARTS LIST (Page 32-)

— SCG-1232A-H2 SCG-1246A-H2 MAIN PWB ASSY
IC1701 MN1873287JB1 MN1873287JA1 IC (MICROCOMPUTER)
IC1702 AT24C08-21FM AT24C08-21FTR IC (MEMORY)

■ PACKING PARTS LIST (Page 38)

1 GG10044-008A-H GG10044-013A-H PACKING CASE

! 6 LCT0795-001A-H LCT0798-001A-H INST BOOK
! 8 LCT0796-001A-H DIGEST MANUAL

— BT-54012-1 WARRANTY CARD

No. 560582

SPECIFICATIONS (Page 2)

Item Content

Dimensions (W × H × D) 596mm × 468.5mm × 481.5mm
Mass 25kg
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 AC110 ~ 240V, 50/60Hz
Power Consumption 116W (Max.) / 74W (Avg.)
Picture Tube Visible size : 51cm measured diagonally
High Voltage 28.0kV ± 1.5kV (at zero beam current)
Speaker 5cm × 12cm Oval type × 2
Audio Output 5W (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)

AV-21P7EE

Design & specifications are subject to change without notice.

No. 56058 3

AV-21P7EE

SPECIFIC SERVICE INSTRUCTIONS

SETTING OF SYSTEM CONSTANT SET (Page 7)

Table 1

Setting item Setting contents Setting value

COLOUR MULTI
BILINGUAL NO
TUNER MU
ECO SENSOR YES
LANGUAGE E/R/U
B/B SOUND OFF

LOCK 180

COLOUR AUTO NO
QSS MINT
ALC NO
TEXT RATE 20
AMP TUNER NO
VNR YES
EW-PIN IC YES

MULTI. TRIPLE PAL
YES NO
MU MA
YES NO
E/R/C/U E/R/C E/R/U E/C
ON OFF

YES 10 20 ... 230

250 240
YES NO
MINT MQSS
YES NO

10 20 40 80

YES NO
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 VNR OFF

CHANNEL PRESET

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

Refer to OPERATING
INSTRUCTION

OFF TIMER OFF
LANGUAGE ENGLISH

No. 560584

SERVICE ADJUSTMENTS

■ Initial Setting Value

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

AV-21P7EE

Setting (Adjustment) Item

DELAY POINT
(AGC TAKE­OVER)

NTSC3.58

Others

Variable Initial setting
range value

48

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 / 0 0 / 0

7. SECAM BL ADJUST −32 ~ +31 0 bbb

8. SHARP TV / VIDEO −32 ~ +31 −14 / +8 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 +12V (W & G).
SECAM COLOUR Value (A) in the figure: Set to +13V (W & G).
NTSC 3.58 COLOUR Value (A) in the figure: Set to +8V (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 +5V (W & Cy).

No. 56058 5

AV-21P7EE

■ DEFLECTION CIRCUIT ADJUSTMENT (Page 20)

[SUB MENU 3. DEF]

Setting item Adjustment name Variable range

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

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

3. VER. HEIGHT Vertical height −64 ~ +63 +13 −2

4. VER. LINEARITY Vertical linearity −16 ~ +15 +7 0

5. VER. SCURVE Vertical scurve −16 ~ +15 −5 0

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

7. HOR. WIDTH Horizontal width −32 ~ +31 −1 −5

8. EW-PIN Side pin correction −32 ~ +31 −5 0

9. EW-CORNER Side pin fore correction −8 ~ +7 −3 +2

10. TRAPEZ Trapezoidal distortion correction −32 ~ +31 −13 −5

11. VER. EDGE Vertical edge correction −8 ~ +7 0 0

12. HOR. COMP Horizontal compensation −8 ~ +7 −2 −2

13. VER. POS2 Vertical center 2 −4 ~ +3 0 0

: Do not adjust.

Initial setting value

50Hz 60Hz

■ VSM PRESET ADJUSTMENT (Page 23)

[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

: Do not adjust.

+15

+15

+15

+30 +15 +11

+15

bb

b

bb

bb

b

bb

bb

b

bb

bb

b +12

bb

bb

b

bb

bb

b

bb

bb

b

bb

No. 560586

AV-21P7EE

PRESET ADJUSTMENT (Page 24)

[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 bbb

3. ABL 1 bbb

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 5 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.

No. 56058 7

AV-21P7EE

VICTOR COMPANY OF JAPAN, LIMITED

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

No. 560588

AV21P7EE-H #3

CTH 0008
CRT