JVC AV-21PM-A Service Manual

AV-21PM
AV-21PM
SERVICE MANUAL
COLOUR TELEVISION
BASIC CHASSIS
CG-F
AV-21PM(-A)
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).
While referring to the illustration given below, identify model name on the rating label affixed to the rear cover.
Basic model name
AV-21PM
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-21PM-A
COPYRIGHT 2000 VICTOR COMPANY OF JAPAN, LTD.
No. 56056 1
No. 56056 Aug. 2000
AV-21PM

PARTS DIFFERENCE TABLE

The different parts between AV-21PM and AV-21PM(-A) are described below:
!!
! REF. NO. PART NAME DESCRIPTION
!!
AV-21PM AV-21PM(-A) PART No. PART No.
EXPLODED VIEW PARTS LIST (Page 30)
! 14 QMP40D0-200J5 QMPR010-200-E2 POWER CORD
or QMP40D0-200J3 or QMPR010-200-K2
! 17 LC20377-010B-H LC20413-002B-H RATING LABEL
PACKING PARTS LIST (Page 38)
! 8 LCT0796-001A-H LCT0797-001A-H DIGEST MANUAL ! QAM0055-001 CONVERSION PLUG
No. 560562

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 75 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, 75
Audio 500mVrms (4dBs), High impedance
Output Video 1Vp-p, 75
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-21PM
Design & specifications are subject to change without notice.
No. 56056 3
AV-21PM

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/A/F B/B SOUND ON
LOCK 180
COLOUR AUTO YES 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/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 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. 560564

SERVICE ADJUSTMENTS

Initial Setting Value
IF CIRCUIT ADJUSTMENT -- Adjustment of DELAY POINT (Page 15)
AV-21PM
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. 56056 5
AV-21PM
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. 560566
AV-21PM
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. 56056 7
AV-21PM
VICTOR COMPANY OF JAPAN, LIMITED
TELEVISION RECEIVER DIVISION 1106 Heta, Iwai-city, Ibaraki-prefecture, 306-0698, Japan
No. 560568
AV21PMA-H #3
CTH 0008 CRT
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