JVC AV-21P8 User manual

AV-21P8
No. 56095 1
MODEL NO.
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SERIALNo.
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Identify model name
Basic model name
BASIC CHASSIS
CM-F
AV-21P8
COPYRIGHT  2000 VICTOR COMPANY OF JAPAN, LTD.
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-21PX 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-21PX Service Manual (No. 56039, Jul. 2000)
Note: The page in parentheses shows the one for the AV-21PX service manual (No. 56039, Jul. 2000).
AV-21P8
SERVICE MANUAL
COLOUR TELEVISION
AV-21P8(BK)
AV-21P8-BK
No. 56095
Sep. 2000

AV-21P8
No. 560952
PARTS DIFFERENCE TABLE
The different parts between AV-21PX and AV-21P8(BK) are described below:
AV-21PX AV-21P8(BK)
!!
!!
!REF. NO. PART NAME DESCRIPTION
PART No. PART No.
■ EXPLODED VIEW PARTS LIST (Page 32)
!13 QMP40D0-200J5 QMPR010-200-E2 POWER CORD
or QMP40D0-200J3 or QMPR010-200-K2
!18 LC20377-010B-H CM22960-076-H RATING LABEL
■ PRINTED WIRING BOARD PARTS LIST [MAIN PWB ASSY] (Page 34-)
— SCM-1613A-H2 SCM-1621A-BK MAIN PWB ASSY
IC1701 M37204MC-D47SP M37204MC-D49SP IC (MICROCOMPUTER)
IC1702 AT24C08-AV21PS AT24C08-21P9BK IC (MEMORY) (Service)
■ PRINTED WIRING BOARD PARTS LIST [INNER PIN PWB ASSY] (Page 37)
— SCM-2102A-H2 SCM-2102A-BK INNER PIN PWB ASSY
■ PRINTED WIRING BOARD PARTS LIST [CRT SOCKET PWB ASSY] (Page 37-)
— SCM-3302A-H2 SCM-3302A-BK CRT SOCKET PWB ASSY
■ PRINTED WIRING BOARD PARTS LIST [FRONT CONTROL PWB ASSY] (Page 39)
— SCM-8302A-H2 SCM-8304A-BK FRONT CONTROL PWB
ASSY
R8022 NRSA02J-681X CH MG R 680Ω1/10W J
D8002 SLR-342VR-T16 LED (RED)
SLR-342MG-T16 LED (GRN)
■ PRINTED WIRING BOARD PARTS LIST [ALC PWB ASSY] (Page 39)
— SCM0A105A-H2 SCM0A105A-BK ALC PWB ASSY
■ PRINTED WIRING BOARD PARTS LIST [IF PWB ASSY] (Page 40-)
— SCM0F302A-H2 SCM0F304A-BK IF PWB ASSY
R0123 NRSA02J-102X CH MG R 1kΩ1/10W J
R0125 NRSA02J-181X CH MG R 180Ω1/10W J
R0619 NRSA02J-102X CH MG R 1kΩ1/10W J
L0104 QQL244K-120Z PEAKING COIL 12µHK
D0104 MA111-X CHIP DIODE
Q0103 2SC2412K/QR/-X CHIP TRANSISTOR
Q0104 2SA1037AK/QR/-X SI TRANSISTOR
Q0110 DTC124EKA-X DIGI TRANSISTOR
Q0606 2SA1037AK/QR/-X SI TRANSISTOR
CF0103 QAX0339-001 CERAMIC TRAP
CF0601 SFSH4.5MCB SFE5.74MC2 CERAMIC FILTER

AV-21P8
No. 56095 3
AV-21PX AV-21P8(BK)
!!
!!
!REF. NO. PART NAME DESCRIPTION
PART No. PART No.
■ PRINTED WIRING BOARD PARTS LIST [AV SW PWB ASSY] (Page 41-)
— SCM0Y502A-H2 SCM0Y502A-BK AV SW PWB ASSY
■ PACKING PARTS LIST (Page 43)
1 GG10044-007A-H GG10045-004A-H PACKING CASE
4 RM-C235-1C RM-C239-1C REMOCON UNIT
5 CP30966-001-H QPA02503505 POLY BAG
!6 LCT0735-001A-H LCT0848-001A-H INST BOOK
!8 LCT0736-001A-H DIGEST MANUAL
!9 LCT0737-001A-H DIGEST MANUAL
— ATEAB001-00A MATCHING BOX

AV-21P8
No. 560954
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
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 75ΩUnbalanced
Power Input Rating: AC110 ~ 240V, 50/60Hz Operating: AC90 ~ 260V, 50/60Hz
Power Consumption 135W (Max.) / 89W (Avg.)
Picture Tube Visible size : 51cm measured diagonally
High Voltage 29kV +1/−1.5kV (at zero beam current)
Speaker 5 ×12cm Oval type ×2
Audio Output 5W + 5W
Input (S/Video-1, Video 1Vp-p, 75Ω
Video-2 & -3,Audio) S/Video Y: 1Vp-p Positive (negative sync provided, when terminated with 75Ω)
C: 0.286Vp-p (burst signal, when terminated with 75Ω)
Audio (L/R) 500mVrms (−4dBs), High impedance
Output Video 1Vp-p, 75Ω
Audio (L/R) 500mVrms (–4dBs), Low impedance
Headphone Jack Stereo mini jack (3.5ø)
Remote Control Unit RM-C239-1C
(Battery size : AA/R06/UM-3 ×2)
Design & specifications are subject to change without notice.
SPECIFICATIONS(Page 2)

AV-21P8
No. 56095 5
Setting item Setting value Setting item Setting value
SUB POWER ON BASS CENTER
CHANNEL POSITION 1 POSITION BALANCE CENTER
Refer to OPERATING
INSTRUCTION
VOLUME Appropriate sound volume AUTO VNR OFF
TV/VIDEO TV OFF TIMER OFF
ON SCREEN DISPLAY POSITION NUMBER DISPLAY AUTO SHUTOFF OFF
COLOUR SYSTEM AUTO PAL ECO SENSOR OFF
SOUND SYSTEM B / G AI VOLUME HIGH
BILINGUAL MODE IBLUE BACK OFF
PICTURE MODE (VSM) BRIGHT ON TIMER PR1 0:00
LIVE SPATIAL OFF CHILD LOCK OFF
TREBLE CENTER
SETTING OF SYSTEM CONSTANT SET (Page 7)
Table 1
USER SETTING VALUES (Page 7)
Table 2
SPECIFIC SERVICE INSTRUCTIONS
CHANNEL PRESET LANGUAGE THAI
Setting item Setting contents Setting value
1. COLOUR AUTO NO
2. COLOUR MULTI
3. ECO SENSOR YES
4. BASS NO-SB-ON
5. VOL. LIMITER YES
6. TEXT NO
7. MSP NO-A2
8. LANGUAGE E/T
9. EW-PIN IC YES
10. B/B OFF MUTE OFF
11. LED 3
12. D/K NICAM NO
13. ALC YES
14. BBE NO
15. E.M.C. NO
YES NO
MULTI. TRIPLE PAL
YES NO
YES-BB YES-BB-SB YES-SB
NO-SB-OFF NO-SB-ON YES-BA
YES NO
YES NO
YES NO NO-A2
E/T E
YES NO
ON OFF
23
YES NO
YES NO
YES NO
YES NO

AV-21P8
No. 560956
Setting Variable Initial setting
(Adjustment) range value
item
DELAY POINT 0 ~63 19
(AGC TAKE-OVER)
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 0bbb
2. DRIVE (R / B) −128 ~ +127 0 bbb
3. BRIGHT (RF/VIDEO) −128 ~ +127 0 / 0 +2 / −1 0 / −2
4. CONT. (RF/VIDEO) −42 ~ +42 0 / −6−7 / −8−8 / −7
5. COLOUR −60 ~ +68 +11 +3+15 0
6. TINT (TV / VIDEO) −64 ~ +63 +12 / 0 0 / −4
7. BLACK OFFSET (R-Y / B-Y) −8 ~ +7+4 / +2
8. SHARP (TV / VIDEO) −32 ~ +31 −15 / 0 b−20 / 0
9. TEXT (RGB) CONT. −128 ~ +77 +10 bbb
10. B.S.OFF 0 ~ +1 0 bbb
11. B.S.POINT 0 ~ +7 +6 bbb
12. DC TRAN RATE 0 ~ +7 0 bbb
13. APA-CON FO/SW 0 ~ +3 +1 bbb
14. VSM PHASE 0 ~ +3 +3 bbb
15. VSM GAIN 0 ~ +3 +1 bbb
16. CLL SW 0 ~ +1 +1 bbb
17. CLL LEVEL 0 ~ +3 +2 bbb
18. ABL POINT 0 ~ +7 +5 bbb
19. ABL GAIN 0 ~ +7 +1 bbb
20. Y-DL (TV / VIDEO / S) 0 ~ +7 +2 / +4 / +2 +3 / +3 / +2 +2 / +2 / +2 +4 / +4 / +2
21. P.ACL SW 0 ~ +1 +1 bbb
22. WPL SW 0 ~ +1 0 bbb
23. Y GAMMA 0 ~ +1 0 bbb
: Do not adjust.

AV-21P8
No. 56095 7
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 +4V (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 +4V (W & G).
Adjustment part Description
6. TINT
NTSC 3.58 TINT Value (B) in the figure: Set to +3V (W & Cy).
■DEFLECTION CIRCUIT ADJUSTMENT (Page 21)
[SUB MENU 4. DEF]
Initial setting value
Setting item Adjustment name Variable range 50Hz 60Hz
1. TRAPEZ Trapezoidal distortion correction −32 ~ +31 −15 −3
2. V-SHIFT Vertical center −32 ~ +31 −19 +12
3. V-SIZE Vertical height −64 ~ +63 +12 0
4. H-CENT Horizontal center −16 ~ +15 −6 0
5. H-SIZE Horizontal width −64 ~ +63 +6 0
6. EW-PIN Side pin correction −64 ~ +63 −10 0
7. V-S. CR Vertical height correction −64 ~ +63 0 +2
8. V-EDGE Vertical edge correction −64 ~ +63 +3 +2
9. EW-COR Side pin fore correction −64 ~ +63 −1 −1
10. V-LINE Vertical linearity −16 ~ +15 0 +2
11. H-COMP Horizontal compensation 0 ~ +15 +3 0
: Do not adjust.
■VSM PRESET ADJUSTMENT (Page 25)
[Setting Values for SUB MENU 5. VSM PRESET]
VSM preset
VSM mode BRIGHT STANDARD SOFT
Setting item
1. TINT 0 bb
bb
bbb
bb
b
SETTING VALUE
2. COLOUR 0 bb
bb
bbb
bb
b
SETTING VALUE
3. BRIGHT 0 bb
bb
bbb
bb
b
SETTING VALUE
4. CONT. +15 0 −4
SETTING VALUE
5. SHARP 0 bb
bb
b−3
SETTING VALUE : Do not adjust.

AV-21P8
No. 560958
: Do not adjust.
■CENTER ADJUSTMENT (Page 25)
[SUB MENU 6. CENTER]
Setting item Initial setting value (fixed)
TREBLE (Do not adjust.) +2
BASS (Do not adjust.) +3
CTH 0009
CRT
AV21P8BK-BK #3
VICTOR COMPANY OF JAPAN, LIMITED
TELEVISION RECEIVER DIVISION 1106 Heta, Iwai-city, Ibaraki-prefecture, 306-0698, Japan