JVC AV-21MXP6/V, AV-25MXP6/V, AV-29MXP6/V SECTION 4 ADJUSTMENT

1-16 (No.YA476)

SECTION 4ADJUSTMENT

4.1 ADJUSTMENT PREPARATION

(1) There are 2 ways of adjusting this TV : One is with the

REMOTE CONTROL UNIT and the other is the

conventional method using adjustment parts and

components.

(2) The 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.

(3) Make sure that connection is correctly made AC to AC

power source.

(4) Turn on the power of the TV and measuring instruments for

warming up for at least 30 minutes before starting

adjustments.

(5) If the receive or input signal is not specified, use the most

appropriate signal for adjustment.

(6) Never touch the parts (such as variable resistors,

transformers and condensers) not shown in the adjustment

items of this service adjustment.

4.2 PRESET SETTING BEFORE ADJUSTMENT

Unless otherwise specified in the adjustment items, preset the

following functions with the REMOTE CONTROL UNIT.

4.3 MEASURING INSTRUMENT AND FIXTURES

(1) DC voltmeter (or digital voltmeter)

(2) Oscilloscope

(3) HV voltmeter

(4) Signal generator

(Pattern generator : PAL/NTSC)

(5) Remote control unit

4.4 ADJUSTMENT ITEMS

 CHECK ITEMS

• B1 VOLTAGE check

• HIGH VOLTAGE check

• IF VCO check

 TUNER / IF CIRCUIT

• DELAY POINT (AGC) adjustment

 FOCUS

• FOCUS adjustment

 DEFLECTION CIRCUIT

• V.SLOPE adjustment

• V.POSITION adjustment

• V.SIZE adjustment

• H.POSITION adjustment

• H.SIZE adjustment [Except AV-21MXP6/V]

• SIDE PIN adjustment [Except AV-21MXP6/V]

• TRAPEZIUM adjustment [Except AV-21MXP6/V]

• V. LINEARITY adjustment

• CORNER adjustment [Except AV-21MXP6/V]

• H. PARALLEL adjustment

• H.BOW adjustment

 VIDEO CIRCUIT

• WHITE BALANCE adjustment

• SUB BRIGHT adjustment

• SUB CONTRAST adjustment

• SUB COLOUR adjustment

• SUB TINT adjustment

 VSM PRESET SETTING

• VSM PRESET

 PURITY AND CONVERGENCE

• PURITY adjustment

• STATIC CONVERGENCE adjustment

• DYNAMIC CONVERGENCE adjustment

Item Preset value

PICTURE MODE(VSM) BRIGHT

VNR OFF

AI ECO SENSOR OFF

BALANCE Centre

BASS / TREBLE / BALANCE Centre

CINEMA SURROUND OFF

Contents

Main SERVICE MANUAL 2006/10 FLAT COLOUR TELEVISION CW3 AV-21MXP6/V, AV-25MXP6 AV-29MXP6 SPECIFICATION SECTION 1 PRECAUTION SECTION 2 SPECIFIC SERVICE INSTRUCTIONS 2.3 TECHNINAL INFORMATION 2.3.1 MAIN MI-COM (CPU) PIN FUNCTION SECTION 3 DISASSEMBLY (No.YA476)1-7 Fig.1 [AV-21MXP6/X] Page Fig.2 [AV-25MXP6/V] Page Fig.3 [FRONT SIDE] Fig.4 [AV-29MXP6/V] Fig.4 ******* **** ***** ***** **** **** *** *** Page Page Page SECTION 4 ADJUSTMENT 4.5 ADJUSTMENT LOCATION [AV-21MXP6/V, AV-25MXP6/V] MAIN PWB ASS'Y (CRT SOCKET) FRONT MAIN PWB ASS'Y TOP TP-47R/G MAIN PWB ASSY MAIN PWB ASSY (CRT SOCKET) FRONT CONTROL PWB ASSY (1/2) FRONT CONTROL PWB ASSY (2/2) SPEAKER (R) ROTATION COIL Page 1-20 (No.YA476) 4.7.4 SERVICE MODE FLOW CHART (**) 3. AUDIO **** ** ** ** ** ** ** ** ** Setting value (Hexadecimal) Setting value Sereen size FULL COMPRESS Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page SECTION 5 TROUBLESHOOTING Page SCHEMATIC DIAGRAMS FLAT COLOUR TELEVISION AV-21MXP6/V, AV-25MXP6/V AV-29MXP6 (No.YA476)2-1 5.NOTE FOR REPAIRING SERVICE STANDARD CIRCUIT DIAGRAM AV-21MXP6 /V, AV-25MXP6 /V, AV-29MXP6 NOTE ON USING CIRCUIT DIAGRAMS 4.INDICATIONS ON THE CIRCUIT DIAGRAM 3.INDICATION OF PARTS SYMBOL [EXAMPLE] CONTENTS PATTERN DIAGRAMS .............................................................................. 2-25 USING P.W. BOARD (CRT SOCKET) 2-4(No.YA476)(No.YA476)2-3 BLOCK DIAGRAMS [AV-21MXP6/V, AV-25MXP/V] (No.YA476)2-5 2-6(No.YA476) IC601 AUDIO AMP SPEAKER R CRT SOCKET PWB V. DRIVE IC351 RGB OUT 2, 8 Q208, Q209 VM OUT VM COIL CIRCUIT DIAGRAMS MAIN PWB CIRCUIT DIAGRAM [AV-21MXP6/V] (1/4) (2/4) SHEET1 MAIN PWB ASS'Y(1/4) SCW-1645A-H2 [AV-21MXP6/V] (No.YA476)2-9 2-10(No.YA476) c21244001a.001.2/2 MAIN PWB ASS'Y(3/4) SCW-1645A-H2 [AV-21MXP6/V] MAIN PWB CIRCUIT DIAGRAM [AV-21MXP6/V] (3/4)(4/4) SHEET2 MAIN PWB ASS'Y(4/4) (CRT SOCKET) SCW-1645A-H2 [AV-21MXP6/V] DEF YOKE ADJUSTMENT CONNECTOR MAIN PWB ASS'Y(1/4) SCW-1646A-H2 [AV-25MXP6/V] (No.YA476)2-13 2-14(No.YA476) c21246001a.001.2/2 MAIN PWB(1/4) SHEET3 CN00T DEG COIL MAIN PWB ASS'Y(3/4) SCW-1646A-H2 [AV-25MXP6/V] MAIN PWB CIRCUIT DIAGRAM [AV-25MXP6/V] (3/4)(4/4) SHEET4 MAIN PWB ASS'Y(4/4) (CRT SOCKET) SCW-1646A-H2 [AV-25MXP6/V] ADJUSTMENT CONNECTOR AC110V-AC240V 50Hz/60Hz MAIN PWB ASS'Y(1/4) SCW-1647A-H2 [AV-29MXP6/V] (No.YA476)2-17 2-18(No.YA476) c21260001a.001.2/2 DEF YOKE CRT SOCKET PWB ASS'Y SHEET7 CN00U ADJUSTMENT CONNECTOR MAIN PWB ASS'Y(2/2) SCW-1647A-H2 [AV-29MXP6/V] 2-20(No.YA476)(No.YA476)2-19 CRT SOCKET PWB ASS'Y SCW-3037A-H2 CRT SOCKET PWB CIRCUIT DIAGRAM [AV-29MXP6/V] SHEET 7 CN00T MAIN PWB (2/2) SHEET6 CN00U (No.YA476)2-21 2-22(No.YA476) FRONT CONTROL PWB ASS'Y SCW-8019A-H2 FRONT CONTROL PWB CIRCUIT DIAGRAM [AV-29MXP6/V] SHEET 8 CN001 CN002 MAIN PWB (2/2) SHEET6 CN00W BASS PWB ASS'Y SCW-6001A-H2 [AV-21MXP6/V, AV-25MXP6/V] SCW-6003A-H2 [AV-29MXP6/V] (No.YA476)2-25 2-26(No.YA476) Y813 B1 Y942 Y941 C973 K651 B1 MAIN PWB PATTERN [AV-29MXP6/V] Y606 CN00M E ( IC671 BASS PWB PATTERN [PARTS SIDE] ) ( ) R6 82 C682 84 FRONT CONTROL PWB PATTERN [AV-29MXP6/V] 2-32(No.YA476)(No.YA476)2-31 VOLTAGE CHARTS [AV-21MXP6/V, AV-25MXP6/V] [AV-29MXP6/V] (No.YA476)2-33 2-34(No.YA476) WAVEFORMS (No.YA476)2-35 [AV-21MXP6/V, AV-25MXP6/V] -CRT SOCKET PWB- -MAIN PWB- -CRT SOCKET PWB- Page (No.YA476)3-1 PARTS LIST CAUTION CONTENTS [AV-21MXP6/V] [AV-25MXP6/V] [AV-29MXP6/V] (No.YA476)3-3 [AV-21MXP6/V] P.W.B ASS'Y AV-21MXP6/V MAIN P.W.B SCW-1645A-H2 BASS P.W.B SCW-6001A-H2 3-4(No.YA476) (No.YA476)3-5 MAIN P.W. BOARD ASS'Y (SCW-1645A-H2) 3-6(No.YA476) (No.YA476)3-7 BASS P.W. BOARD ASS'Y (SCW-6001A-H2) 3-8(No.YA476) (No.YA476)3-9 3-10(No.YA476) (No.YA476)3-11 [AV-25MXP6/V] P.W.B ASS'Y AV-25MXP6/V MAIN P.W.B SCW-1646A-H2 BASS P.W.B SCW-6001A-H2 3-12(No.YA476) (No.YA476)3-13 MAIN P.W. BOARD ASS'Y (SCW-1646A-H2) 3-14(No.YA476) (No.YA476)3-15 3-16(No.YA476) (No.YA476)3-17 BASS P.W. BOARD ASS'Y (SCW-6001A-H2) 3-18(No.YA476) [AV-29MXP6/V] (No.YA476)3-19 V01 L01 T522 DY01 100 MAIN P.W. BOARD ASS'Y (SCW-1647A-H2) (No.YA476)3-21 3-22(No.YA476) (No.YA476)3-23 3-24(No.YA476) CRT SOCKET P.W. BOARD ASS'Y (SCW-3037A-H2) FRONT CONTROL P.W. BOARD ASS'Y (SCW-8019A-H2) BASS P.W. BOARD ASS'Y (SCW-6003A-H2) (No.YA476)3-25 3-26(No.YA476) INSTRUCTIONS COLOUR TELEVISION Page Knowing your TVs features Main features Remote control buttons and basic functions Remote control buttons and basic functions (continued) How to operate menus and menus locations MENU Top menu 2nd menu Top menu 3rd menuMENU 2nd menu TV buttons and functions AV-21B316 Front of the TV AV-29S356 Rear of the TV AV-29S356 How to operate the menus with the TV button Setting up your TV CAUTION Turn off the equipment including the TV before connecting. 1 3 4 5 Setting up your TV (continued) COLOUR SYSTEM PICTURE MODE Basic setting for picture 10 PICTURE SETTING 1 2 Basic setting for picture (continued) WHITE BALANCE PICTURE BOOSTER Advanced setting for picture PIP Original features for picture SOUND SYSTEM Basic setting for sound SOUND MODE BALANCE 14 CINEMA SURROUND Advanced setting for sound EQUALIZER 1 2 3 4 AI VOLUME DVD Menu DVD SOUND MODE DVD PICTURE MODE DVD THEATER STATUS AUTO SIGNAL DETECT Customized setting ON TIMER 1 2 3 17 Customized setting (continued) BEEP 1 2 DISPLAY TV channel presetting 2 3 4 5 6 19 To add in the new channel (INSERT in the EDIT menu) 5 2 3 TV channel presetting (continued) CH/CC number Channel No. Country US United States, Philippines, etc.. CCIR Connecting to front video input terminals Additional preparation Connecting to rear component/video input terminals and output terminals Front of TV Rear of TV Troubleshooting Speci cations Design and speci cations subject to change without notice. Speci cations Design and speci cations subject to change without notice.