JVC AV-29LS2 Service Manual
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Instruction Manual
SERVICE MANUAL
AV-29LS2
AV-29LX2
POWER
MUTING
SYSTEM
COLOUR SOUND
ECO
DISPLAY
SENSOR
MENU
I/II
TV/TEXT
TV/VIDEO
1
2
3
OFF
TIMER
4
5
6
PICTURE
MODE
7
8
9
CHANNEL
RETURN+
SCAN
0
-/--
CHANNEL
VOLUME
TEXT
REVEAL
HOLD
INDEX
SIZE
SUBPAGE
STORE
MODE
CANCEL
TV
RM-C1020
RM-C1020-1H
RM-C1024-1H
[AV-29LS2]
[AV-29LX2]
[AV-29LX2
CONTENTS
a
SPECIFICATIONS ....................................................................................................................................2
a
OPERATING INSTRUCTIONS (APPENDIX)
a
SAFETY PRECAUTIONS ........................................................................................................................3
a
FEATURES ..............................................................................................................................................4
a
FUNCTIONS .............................................................................................................................................5
a
SPECIFIC SERVICE INSTRUCTIONS ....................................................................................................6
a
SERVICE ADJUSTMENTS ....................................................................................................................14
a
STANDARD CIRCUIT DIAGRAM (APPENDIX) .................................................................................. 2-1
a
PARTS LIST ...........................................................................................................................................41
COPYRIGHT © 2002 VICTOR COMPANY OF JAPAN, LTD.
COLOUR TELEVISION
POWER
MUTING
MUTING
POWER
SYSTEM
SYSTEM
COLOUR SOUND
COLOUR SOUND
ECO
ECO
DISPLAY
SENSOR
DISPLAY
SENSOR
MENU
MENU
TV/TEXT
TV/VIDEO
TV/VIDEO
1
2
3
1
2
3
OFF
OFF
TIMER
TIMER
4
5
6
4
5
6
PICTURE
PICTURE
MODE
MODE
7
8
9
7
8
9
CHANNEL
CHANNEL
RETURN+
SCAN
RETURN+
SCAN
0
-/--
0
-/--
CHANNEL
VOLUME
CHANNEL
VOLUME
TEXT
REVEAL
HOLD
INDEX
SIZE
SUBPAGE
STORE
MODE
CANCEL
RM-C1024
TV
TV
RM-C1023
RM-C1023-1H
[AV-2968TEE]
]
/A
AV-29LX2
AV-2968TEE
AV-29LS2
AV-29LX2
AV-2968TEE
BASIC CHASSIS
CH
/A
No. 52062
Sep. 2002
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Table of Contents
Related Manuals for JVC AV-29LS2
Summary of Contents for JVC AV-29LS2
- Page 1 AV-29LS2 AV-29LX2 AV-2968TEE SERVICE MANUAL COLOUR TELEVISION BASIC CHASSIS AV-29LS2 AV-29LX2 AV-29LX2 AV-2968TEE POWER POWER MUTING MUTING MUTING POWER SYSTEM SYSTEM SYSTEM COLOUR SOUND COLOUR SOUND COLOUR SOUND DISPLAY SENSOR DISPLAY SENSOR DISPLAY SENSOR MENU MENU MENU I/II TV/TEXT TV/TEXT...
- Page 2 AV-29LS2 AV-29LX2 AV-29LS2 AV-2968TEE AV-29LX2 AV-29LX2 STANDARD CIRCUIT DIAGRAM AV-2968TEE q NOTE ON USING CIRCUIT DIAGRAMS • 1. SAFETY Type No indication : Ceramic capacitor The components identified by the symbol and shading are : Mylar capacitor critical for safety. For continued safety replace safety critical : Metalized mylar capacitor components only with manufactures recommended parts.
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Page 3: Table Of Contents
AV-2968TEE CONTENTS SEMICONDUCTOR SHAPES ..........................2-2 BLOCK DIAGRAM ................................2-3 CIRCUIT DIAGRAMS MAIN PWB CIRCUIT DIAGRAM (1/2) [AV-29LS2] ....................... 2-5 MAIN PWB CIRCUIT DIAGRAM (2/2) [AV-29LS2] ....................... 2-7 MAIN PWB CIRCUIT DIAGRAM (1/2) [AV-29LX2, AV-29LX2 , AV-2968TEE] ............2-9 MAIN PWB CIRCUIT DIAGRAM (2/2) [AV-29LX2, AV-29LX2 , AV-2968TEE] ............. -
Page 4: Block Diagram
AV-29LS2 AV-29LS2 AV-29LX2 AV-29LX2 AV-2968TEE AV-2968TEE BLOCK DIAGRAM CRT SOCKET PWB MAIN PWB TU001 TUNER SIF IN1 SF101 SAW FILTER SIF IN2 ROUT GOUT RGB DRIVE IF IN1 SF102 BOUT SAW FILTER IF IN2 IC701 AV-29LS2 V/C DEF. PROCESSOR 29,30... -
Page 5: Circuit Diagrams
AV-29LS2 AV-29LS2 CIRCUIT DIAGRAMS MAIN PWB CIRCUIT DIAGRAM (1/2) [AV-29LS2] J805 IC801 IC801 IC801 IC801 Y601 0.96Vp-p(H) 2.0Vp-p(H) 2.0Vp-p(H) 2.0Vp-p(H) C618 C619 IC130 NCB31CK-104X 10/50 C620 C621 C133 R143 R137 CF140 .001 .001 R139 R136 Q136 CF141 R138 BASS CF142... -
Page 6: Main Pwb Circuit Diagram (2/2) [Av-29Ls2]
AV-29LS2 AV-29LS2 MAIN PWB CIRCUIT DIAGRAM (2/2) [AV-29LS2] R539 D408 R538 Q524 C471 R425 D401 10/50 RGP10J-5025-T3 D595 R537 D596 IC461 R401 C401 Q523 JLC1562BF-X 33/50 H_DRIVE R536 C538 IC401 VERT OUT LA78041 R535 D593 D594 THERMAL PROTECTION IC401 IC401... - Page 7 AV-29LX2 AV-29LX2 AV2968TEE AV2968TEE MAIN PWB CIRCUIT DIAGRAM (1/2) [AV-29LX2, AV-29LX2 , AV2968TEE] CF140 5.5MHz BPF QAX0695-001Z IC801 IC801 IC801 IC801 J805 CF141 6.0MHz BPF QAX0696-001Z Y601 CF142 6.5MHz BPF 0.96Vp-p(H) 2.0Vp-p(H) 2.0Vp-p(H) 2.0Vp-p(H) QAX0697-001Z C619 IC130 C620 C621 C133 M52342SP 100/16 R143...
- Page 8 AV-29LX2 AV-29LX2 AV-2968TEE AV-2968TEE MAIN PWB CIRCUIT DIAGRAMS (2/2) [AV-29LX2, AV-29LX2 , AV-2968TEE] R539 D408 R538 Q524 C471 R425 D401 10/50 RGP10J-5025-T3 D595 R537 D596 IC461 R401 C401 Q523 JLC1562BF-X 33/50 H_DRIVE R536 C538 IC401 VERT OUT LA78041 R535 D593 D594 THERMAL IC401...
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Page 9: Crt Socket Pwb Circuit Diagram
AV-29LS2 AV-29LS2 AV-29LX2 AV-29LX2 AV-2968TEE AV-2968TEE CRT SOCKET PWB CIRCUIT DIAGRAM R138 R139 CRT SOCKET PWB ASS’Y 2SC3334-T Q129 QRL029J-223 211.0V 159.7V QRZ0107-102Z 2SC4075/DE/YA11 R140 L123 SCH-3005A-H2 D119 CN00T Q123 D118 162.3V 1SS244-T2 159.8V R120 QGA2501C5-06Z R121 100 1/2W 12.0V R148 158.7V... -
Page 10: Front Control Pwb Circuit Diagram
AV-29LS2 AV-29LS2 AV-29LX2 AV-29LX2 AV-2968TEE AV-2968TEE FRONT CONTROL PWB CIRCUIT DIAGRAM J801 QNS0155-001 FRONT INPUT HEADPHONE JACK (VIDEO 3) TO DEG COIL J303 QNN0279-002 J304 QGA2501C5-03Z J302 QNN0279-001 QNN0279-003 CN00R CN00B LIVE ISOLATED R513 R499 R830 QRE121J-561Y R814 2.2K NRSA63J-222X... - Page 11 AV-29LS2 AV-29LX2 AV-2968TEE SPECIFICATIONS Contents Items AV-29LS2 AV-29LX2 AV-29LX2 AV-2968TEE Dimensions (W × H × D) 73.2cm × 58.8cm × 51.8cm Mass 47kg 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...
- Page 12 AV-29LS2 AV-29LX2 AV-2968TEE FUNCTIONS FRONT PANEL L/MONO IN (VIDEO-3) REAR PANEL COMPONENT VIDEO-1 ( VIDEO-2 ) OUTPUT INPUT INPUT MONO MONO REMOTE CONTROL UNIT RM-C1020-1H RM-C1024-1H RM-C1023-1H [AV-29LS2] [AV-29LX2] [AV-2968TEE] [AV-29LX2 POWER POWER MUTING MUTING POWER MUTING SYSTEM SYSTEM SYSTEM...
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Page 13: Main Pwb Pattern
AV-29LS2 AV-29LX2 AV-2968TEE SPECIFIC SERVICE INSTRUCTIONS DISASSEMBLY PROCEDURE REMOVING THE REAR COVER CHECKING THE MAIN PW BOARD 1. Unplug the power supply cord. 1. To check the back side of the Main PWB. Å 2. Remove the 16 screws marked as shown in Fig.1. -
Page 14: A , Av-2968Tee]
AV-29LS2 AV-29LX2 AV-2968TEE REPLACEMENT OF MEMORY IC SERVICE MENU 1. MEMORY IC This TV uses the following memory IC. SERVICE MENU Memory IC: IC1702 on MAIN PW Board The memory IC memorizes data for correctly operating the video 1. IF 2. - Page 15 AV-29LS2 AV-29LX2 AV-2968TEE SETTING OF SYSTEM CONSTANT SET Setting value Setting item Setting content AV-29LS2 AV-29LX2 AV-29LX2 AV-2968TEE MULTI TRIPLE SINGLE VIET SYSTEM MULTI COMB TILT ERCMI ERAPU TEXT ERCMI ERAPU SUPER BASS E/R/C/M/I E/R/C E/R/C/M/I – – – LANGUAGE...
- Page 16 AUTO SHUTOFF CHILD LOCK BLUE BACK VIDEO-2 SET VIDEO LANGUAGE AI VOLUME ON SCREEN DISPLAY POSITION INDICATION COLOUR SYSTEM SOUND SYSTEM STEREO MODE STEREO [AV-29LS2 only] PICTURE MODE-VSM BRIGHT OFF TIMER ECO SENSOR BASS CENTRE TREBLE CENTRE BALANCE CENTRE Table 2...
- Page 17 31. CCCLOOP (BRIGHT/STD/SOFT) 2. COLOUR 3. BRIGHT 6. A2NICAM 1. ERROR LIMIT Do not adjust 4. PICTURE [AV-29LS2 only] 2. A2 ID THR Do not adjust 5. DETAIL 3. SOUND SYSTEM 6/7. PLUG & PLAY(ON) Do not adjust Table 3...
- Page 18 Adjustment of SUB COLOUR-ΙΙ • VSM PRESET SETTING Adjustment of SUB TINT-Ι • PRESET SETTING Adjustment of SUB TINT-ΙΙ • AUDIO ADJUSTMENT [AV-29LS2 only] • PURITY ADJUSTMENT • CONVERGENCE ADJUSTMENTS Adjustment of STATIC CONVERGENCE Adjustment of DYNAMIC CONVERGENCE No. 52062...
- Page 19 • 5.PRESET ......For setting the values of the preset. • 6.A2NICAM ......For entering/adjusting the setting values (adjustment values)of the multiplicity sound circuit. [AV-29LS2 only] • 6/7. PLUG & PLAY (ON) ..This is not used for service. 3. BASIC OPERATION IN SERVICE MENU (1) How to enter SERVICE MENU Press the DISPLAY key and the PICTURE MODE key on the remote control unit simultaneously.
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Page 20: A , Av-2968Tee]
AV-29LS2 AV-29LX2 AV-2968TEE SERVICE MENU SUB MENU 1. IF SERVICE MENU 1. IF 2. VC VCO (CW) ***** 3. DEF 4. VSM PRESET TOO HIGH 5. PRESET 6. A2NICAM 1. VCO ABOVE REFERENCE 7. PLUG & PLAY (ON) BELOW REFERENCE 2. - Page 21 AV-29LS2 AV-29LX2 AV-2968TEE ADJUSTMENTS B1 POWER SUPPLY Measuring Item Test point Adjustment part Description instrument Check of Signal B1 (pin 1) 1. Receive a black and white signal. B1 POWER Generator GND (pin 5) 2. Connect a DC voltmeter between B1 and GND...
- Page 22 AV-29LS2 AV-29LX2 AV-2968TEE VC (VIDEO/CHROMA) CIRCUIT ADJUSTMENTS The setting (adjustment) using the remote control unit is made on the basis of the initial setting values. The setting values which adjust the screen to the optimum condition can be different from the initial setting values.
- Page 23 AV-29LS2 AV-29LX2 AV-2968TEE Measuring Test point Adjustment part Description Item instrument Adjustment Signal 2. DRIVE (R) Notes: of WHITE generator DRIVE (G) • Proceed to the following adjustment after having completed the ad- BALANCE DRIVE (B) justment of LOW LIGHT WHITE BALANCE.
- Page 24 AV-29LS2 AV-29LX2 AV-2968TEE CONVERGENCE ADJUSTMENTS STATIC CONVERGENCE ADJUSTMENT 1. Input a crosshatch signal. (FRONT VIEW) 2. Using 4-pole convergence magnets, overlap the red and blue lines in the center of the screen (Fig. 4) and turn them to magenta (red/blue).
- Page 25 AV-29LS2 AV-29LX2 AV-2968TEE SELF-CHECK FUNCTIONS 1. Outline This model has self-check functions given below.When an abnormality has been detected,the SUB POWER is turned off and both ECO and ON TIMER LEDs flash to inform of the failure.An abnormality is detected by the signal input state of the control line connected to the microcomputer.