JVC AV-21P4(BK) User manual

AV-21P4
No. 56059 1
MODEL NO.
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SERIALNo.
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Identify model name
Basic model name
BASIC CHASSIS
CG-F
AV-21P4
COPYRIGHT  2000 VICTOR COMPANY OF JAPAN, LTD. No. 56059
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.
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).
AV-21P4
SERVICE MANUAL
COLOUR TELEVISION
AV-21P4(BK)
AV-21P4-BK

AV-21P4
No. 560592
PARTS DIFFERENCE TABLE
The different parts between AV-21PM and AV-21P4(BK) are described below:
AV-21PM AV-21P4(BK)
!!
!!
!REF. NO. PART NAME DESCRIPTION
PART No. PART No.
■ EXPLODED VIEW PARTS LIST (Page 30)
1 LC10549-015A-H LC10549-010A-H FRONT CABI ASSY
!14 QMP40D0-200J5 QMPR010-200-E2 POWER CORD
or QMP40D0-200J3 or QMPR010-200-K2
!17 LC20377-010B-H CM22960-078-H RATING LABEL
■ PRINTED WIRING BOARD PARTS LIST [MAIN PWB ASSY] (Page 32-)
— SCG-1232A-H2 SCG-1265A-BK MAIN PWB ASSY
IC1701 MN1873287JB1 MN1873287JC1 IC (MICROCOMPUTER)
IC1702 AT24C08-21PM AT24C08-21P4BK IC (MEMORY) (Service)
— SCG-3001A-H2 SCG-3001A-BK CRT SOCKET PWBASSY
— SCG-8001A-H2 SCG-8002A-BK FRONT CONTROL PWB
ASSY
■ PACKING PARTS LIST (Page 38)
1 GG10044-008A-H GG10045-006A-H PACKING CASE
4 RM-C364-1H RM-C365-1H REMOCON UNIT
5 CP30966-001-H QPA02503505 POLY BAG
!6 LCT0795-001A-H LCT0799-001A-H INST BOOK
!8 LCT0796-001A-H DIGEST MANUAL
— ATEAB001-00A MATCHING BOX

AV-21P4
No. 56059 3
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
Colour System TV Mode PAL / SECAM
VIDEO Mode PAL / SECAM / NTSC3.58 / NTSC4.43
Stereo System Bilingual in A2 (Monaural)
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 Rating: AC110 ~ 240V, 50/60Hz Operating: AC90 ~ 260V, 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-C365-1H (Battery size : AA/R06/UM-3 ×2)
Design & specifications are subject to change without notice.

AV-21P4
No. 560594
SETTING OF SYSTEM CONSTANT SET (Page 7)
Table 1
USER SETTING VALUES (Page 7)
Table 2
SPECIFIC SERVICE INSTRUCTIONS
Setting item Setting contents Setting value
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 NO
VNR YES
EW-PIN IC YES
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
YES NO
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 THAI
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
BILINGUAL MODE I
Refer to OPERATING
INSTRUCTION
CHANNEL PRESET

AV-21P4
No. 56059 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]
Variable Initial setting
range value
Setting (Adjustment) Item
DELAY POINT
(AGC TAKE-
OVER)
NTSC3.58
Others 0~127 48
43
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 / +8bbb
: Do not adjust.
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 +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 part Description
6. TINT
NTSC 3.58 TINT Value (B) in the figure: Set to +5V (W & Cy).

AV-21P4
No. 560596
■DEFLECTION CIRCUIT ADJUSTMENT (Page 20)
[SUB MENU 3. DEF]
■VSM PRESET ADJUSTMENT (Page 23)
[Setting Values for SUB MENU 4. VSM PRESET]
: Do not adjust.
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 +19 +14
SETTING VALUE
SHARP +20 bb
bb
b+15
SETTING VALUE
Initial setting value
Setting item Adjustment name Variable range 50Hz 60Hz
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.

AV-21P4
No. 56059 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 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 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 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.
PRESET ADJUSTMENT (Page 24)
[SUB MENU 5. PRESET]

AV-21P4
No. 560598 AV21P4BK-BK #3 CTH 0008
CRT
VICTOR COMPANY OF JAPAN, LIMITED
TELEVISION RECEIVER DIVISION 1106 Heta, Iwai-city, Ibaraki-prefecture, 306-0698, Japan