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SERVICE MANUAL
FLAT COLOUR TELEVISION

AV-29VS24 AV-29VX74 /G AV-2984V /E
BASIC CHASSIS

CW

[AV-29VX74/G] [AV-2984V/E]

[AV-29VS24]

TABLE OF CONTENTS
1 2 3 4 5 PRECAUTION ......................................................................................................................................................... 1-3 SPECIFIC SERVICE INSTRUCTIONS ................................................................................................................... 1-4 DISASSEMBLY ....................................................................................................................................................... 1-9 ADJUSTMENT ...................................................................................................................................................... 1-15 TROUBLESHOOTING ........................................................................................................................................... 1-34

COPYRIGHT © 2004 Victor Company of Japan, Limited

No.YA102 2004/6

SPECIFICATION
Items Dimentions (W x H x D) Mass TV RF System Colour System Stereo System Teletext system Receiving Frequency AV-29VS24 Contents AV-29VX74/G AV-2984V/E

TV Mode Video Mode

VHF Low VHF High UHF CATV

Intermediate Frequency

VIF SIF

Colour Sub Carrier Frequency Aerial Input Terminal Power Input Power Consumption Picture Tube

High Voltage Speaker Audio Output Video / Audio Input (1/2/3)

S-Video [1]

Video [1/2/3] Audio [1/2/3] Component Video [2] Video / Audio Output Headphone Remote Control Unit Video Audio

81.2cm x 58.4cm x 52.0cm 41kg 43kg B, G, I, D, K, M PAL / SECAM / NTSC3.58 / NTSC 4.43 PAL / SECAM / NTSC3.58 / NTSC4.43 A2(B/G) / NICAM(B/G,I,D/K) Playback A2(B/G) / NICAM(B/G,I,D/K) FLOF (Fastext), WST (World Standard Text) 46.25MHz ~ 140.25MHz (AS0 S6) 147.25MHz ~ 423.25MHz (S7~ S36) 431.25MHz ~ 863.25MHz (S37 ~ CHINA 57) Mid: X ~ Z, S1 ~ S10 Super: S11 ~ S20 Hyper: S21 S41 38.0MHz D/K: 31.5MHz (6.5MHz) D/K: 31.5MHz (6.5MHz) D/K: 31.5MHz (6.5MHz) [NICAM: 32.15MHz (5.85MHz)] I: 32.0MHz (6.0MHz) [NICAM: 32.15MHz (5.85MHz)] I: 32.0MHz (6.0MHz) B/G: 32.5MHz (5.5MHz) I: 32.0MHz (6.0MHz) [NICAM: 31.45MHz (6.55MHz)] M: 33.5MHz (4.5MHz) [NICAM: 31.45MHz (6.55MHz)] B/G: 32.5MHz (5.5MHz) B/G: 32.5MHz (5.5MHz) [A2: 32.26MHz (5.74MHz)] [A2: 32.26MHz (5.74MHz)] [NICAM: 32.15MHz (5.85MHz) [NICAM: 32.15MHz (5.85MHz) M: 33.5MHz (4.5MHz) M: 33.5MHz (4.5MHz) 4.43MHz (PAL), 4.40MHz / 4.25MHz (SECAM), 3.58MHz / 4.43MHz (NTSC) 75 unbalanced, coaxial AC110V ~ AC240V, 50Hz / 60Hz 166W (Max.) / 109 W (Avg.) A68LZU185X A68QCU770X52K 29-inch, aspect ratio 4:3, flat square face type, tinted Visible size: 67.6cm (Diagonal) / 54.1cm x 40.6cm (H x V) 32kV -1.5kV / +1.0kV (at zero beam current) 6.5cm x 13cm, oval type x 2 10W + 10W Mini-DIN 4pin Y : 1V (p-p), positive (negative sync provided), 75 C : 0.286V (p-p) (Burst signal), 75 1V (p-p), negative sync, 75, RCA pin jack x 3 500mV (rms) (-4dBs), High impedance, RCA pin jack x 6 RCA pin jack x 3 Y: 1V(p-p), positive (negative sync), 75 CB/CR : 0.7V(p-p), 75 1V (p-p), 75, RCA pin jack x 1 500mV (rms) (-4dBs), Low inpedance (400Hz when modulated 100%), RCA pin jack x 2 3.5mm stereo mini jack RM-C1281-2H RM-C1280-2H (AA/R06/UM-3 battery x 2) (AA/R06/UM-3 battery x 2)

Design & specifications are subject to change without notice.

1-2 (No. YA102)

SECTION 1 PRECAUTION
1.1 SAFETY PRECAUTIONS (1) The design of this product contains special hardware, many circuits and components specially for safety purposes. For continued protection, no changes should be made to the original design unless authorized in writing by the manufacturer. Replacement parts must be identical to those used in the original circuits. Service should be performed by qualified personnel only. (2) Alterations of the design or circuitry of the products should not be made. Any design alterations or additions will void the manufacturer's warranty and will further relieve the manufacturer of responsibility for personal injury or property damage resulting therefrom. (3) Many electrical and mechanical parts in the products have special safety-related characteristics. These characteristics are often not evident from visual inspection nor can the protection afforded by them necessarily be obtained by using replacement components rated for higher voltage, wattage, etc. Replacement parts which have these special safety characteristics are identified in the parts list of Service manual. Electrical components having such features are identified by shading on the schematics and by ( ) on the parts list in Service manual. The use of a substitute replacement which does not have the same safety characteristics as the recommended replacement part shown in the parts list of Service manual may cause shock, fire, or other hazards. (4) Don't short between the LIVE side ground and ISOLATED (NEUTRAL) side ground or EARTH side ground when repairing. Some model's power circuit is partly different in the GND. The difference of the GND is shown by the LIVE : ( ) side GND, the ISOLATED (NEUTRAL) : ( ) side GND and ) side GND. Don't short between the LIVE EARTH : ( side GND and ISOLATED (NEUTRAL) side GND or EARTH side GND and never measure the LIVE side GND and ISOLATED (NEUTRAL) side GND or EARTH side GND at the same time with a measuring apparatus (oscilloscope etc.). If above note will not be kept, a fuse or any parts will be broken. (5) If any repair has been made to the chassis, it is recommended that the B1 setting should be checked or adjusted (See ADJUSTMENT OF B1 POWER SUPPLY). (6) The high voltage applied to the picture tube must conform with that specified in Service manual. Excessive high voltage can cause an increase in X-Ray emission, arcing and possible component damage, therefore operation under excessive high voltage conditions should be kept to a minimum, or should be prevented. If severe arcing occurs, remove the AC power immediately and determine the cause by visual inspection (incorrect installation, cracked or melted high voltage harness, poor soldering, etc.). To maintain the proper minimum level of soft X-Ray emission, components in the high voltage circuitry including the picture tube must be the exact replacements or alternatives approved by the manufacturer of the complete product. (7) Do not check high voltage by drawing an arc. Use a high voltage meter or a high voltage probe with a VTVM. Discharge the picture tube before attempting meter connection, by connecting a clip lead to the ground frame and connecting the other end of the lead through a 10k 2W resistor to the anode button. (8) When service is required, observe the original lead dress. Extra precaution should be given to assure correct lead dress in the high voltage circuit area. Where a short circuit has occurred, those components that indicate evidence of overheating should be replaced. Always use the manufacturer's replacement components. (9) Isolation Check (Safety for Electrical Shock Hazard) After re-assembling the product, always perform an isolation check on the exposed metal parts of the cabinet (antenna terminals, video/audio input and output terminals, Control knobs, metal cabinet, screw heads, earphone jack, control shafts, etc.) to be sure the product is safe to operate without danger of electrical shock. a) Dielectric Strength Test The isolation between the AC primary circuit and all metal parts exposed to the user, particularly any exposed metal part having a return path to the chassis should withstand a voltage of 3000V AC (r.m.s.) for a period of one second. (. . . . Withstand a voltage of 1100V AC (r.m.s.) to an appliance rated up to 120V, and 3000V AC (r.m.s.) to an appliance rated 200V or more, for a period of one second.) This method of test requires a test equipment not generally found in the service trade. b) Leakage Current Check Plug the AC line cord directly into the AC outlet (do not use a line isolation transformer during this check.). Using a "Leakage Current Tester", measure the leakage current from each exposed metal part of the cabinet, particularly any exposed metal part having a return path to the chassis, to a known good earth ground (water pipe, etc.). Any leakage current must not exceed 0.5mA AC (r.m.s.). However, in tropical area, this must not exceed 0.2mA AC (r.m.s.). Alternative Check Method Plug the AC line cord directly into the AC outlet (do not use a line isolation transformer during this check.). Use an AC voltmeter having 1000 ohms per volt or more sensitivity in the following manner. Connect a 1500 10W resistor paralleled by a 0.15µF AC-type capacitor between an exposed metal part and a known good earth ground (water pipe, etc.). Measure the AC voltage across the resistor with the AC voltmeter. Move the resistor connection to each exposed metal part, particularly any exposed metal part having a return path to the chassis, and measure the AC voltage across the resistor. Now, reverse the plug in the AC outlet and repeat each measurement. Any voltage measured must not exceed 0.75V AC (r.m.s.). This corresponds to 0.5mA AC (r.m.s.). However, in tropical area, this must not exceed 0.3V AC (r.m.s.). This corresponds to 0.2mA AC (r.m.s.).
AC VOLTMETER (HAVING 1000/V, OR MORE SENSITIVITY)

0.15µF AC-TYPE PLACE THIS PROBE ON EACH EXPOSED METAL PART

1500 10W GOOD EARTH GROUND

(No. YA102) 1-3

SECTION 2 SPECIFIC SERVICE INSTRUCTIONS
2.1 FEATURES New chassis design enables use of an interactive on-screen control. Pure flat CRT produces fine textured picture in every detail. Wide range voltage (110V ~ 240V) for AC power input. With AUDIO/VIDEO/S-VIDEO/COMPONENT input terminals. I 2 C bus control utilizes single chip ICs. By means of AUTO PROGRAM, the TV stations can be selected automatically and the TV channels can also be rearranged automatically. · Built-in DIGITAL ECO MODE (ECONOMY, ECOLOGY). In accordance with the brightness in a room, the brightness and/or contrast of the picture can be adjusted automatically to make the optimum picture which is easy on the eye. · Built-in OFF TIMER & RETURN +.
· · · · · ·

2.2 MAIN DIFFERENCE LIST Items MAIN PWB ASS'Y FRONT CABINET ASS'Y REMOTE CONTROL UNIT PICTURE TUBE PIP AV-29VS24 SCW-1001A-H2 GG10239-014A-H RM-C1281-2H A68LZU185X --AV-29VX74/G SCW-1002A-H2 GG10239-009A-H RM-C1280-2H A68QCU770X52K YES AV-2984V/E SCW-1011A-H2 GG10239-011A-H RM-C1280-2H YES

1-4 (No. YA102)

2.3 FUNCTIONS REMOTE CONTROL UNIT RM-C1281-2H [AV-29VS24]

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18

1 SOUND SYSTEM key 19 2 COLOUR SYSTEM key 3 FAVORITE CHANNEL keys 20 21 22 23 24 25 26 27 28 29 30 31 4 DISPLAY BACK key 5 MENU (OK) key 6 TEXT key 7 SOUND TURBO key 8 PICTURE MODE key 9 SOUND setting key (Stereo/Bilingual /Bilingual /Monaural) 10 OFF TIMER key 11 RETURN + key 12 CHANNEL (-/+) keys 13 MODE key 14 INDEX key 15 REVEAL key 16 Not used

17 INPUT / STORE key 18 ECO key 19 POWER key 20 TV / VIDEO key 21 MENU ( / , 22 MUTING key 23 Number keys 24 -/-- key 25 VOLUME (-/+) keys 26 SUBPAGE keys 27 HOLD key 28 CANCEL key 29 SIZE key 30 BASS keys 31 CINEMA SURROUND key / ) keys

RM-C1280-2H [AV-29VX74/G, AV-2984V]
1 SOUND SYSTEM key 19 20 21 22 23 24 25 26 27 28 29 30 31 32 2 COLOUR SYSTEM key 3 FAVORITE CHANNEL keys 4 DISPLAY BACK key 5 MENU (OK) key 6 TEXT keys 7 SOUND TURBO key 8 PICTURE MODE key 9 SOUND setting key (Stereo/Bilingual /Bilingual /Monaural) 10 OFF TIMER key 11 RETURN + key 12 CHANNEL (-/+) keys 13 MODE key 14 INDEX key / SUB (+) key 15 REVEAL key / SUB (-) key 16 Not used 17 INPUT / STORE key 18 ECO key 19 POWER key 20 PIP key 21 TV / VIDEO key 22 MENU ( / , / ) keys 23 MUTING key 24 Number keys 25 -/-- key 26 VOLUME (-/+) keys 27 SUBPAGE keys 28 POSITION / HOLD key 29 SWAP / CANCEL key 30 FREEZE / SIZE key 31 BASS keys 32 CINEMA SURROUND key

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18

(No. YA102) 1-5

FRONT PANEL CONTROLS

V

L/MONO IN (VIDEO-3)

R

MENU OK

CHANNEL

VOLUME

TV/VIDEO EXIT

POWER

1

2

3

4

5

6

7

8 7 8 9

9

10

11

12

1 HEADPHONE jack 2 IN (VIDEO-3) : VIDEO 3 IN (VIDEO-3) : AUDIO L/MONO 4 IN (VIDEO-3) : AUDIO R 5 MENU (OK) button 6 CHANNEL (-/+) buttons

VOLUME (-/+) buttons TV/VIDEO EXIT buttons Remote control sensor

10 ECO sensor 11 POWER lamp 12 MAIN POWER button

REAR TERMINAL

VIDEO-1 INPUT TERMINAL 1 1 5 6 8 10 11 2 3
VIDEO-1 INPUT S COMPONENT (VIDEO-2) INPUT

S-VIDEO VIDEO AUDIO L/MONO AUDIO R

4
OUTPUT

COMPONENT (VIDEO-2) INPUT TERMINAL 5 Y/VIDEO CB CR AUDIO L/MONO AUDIO R 6

OVER

V L/ R

Y/ V MONO CB CR L/ MONO

V

7 8 9

L R

R

OUTPUT TERMINAL 10 VIDEO 12 13 11 AUDIO L 12 AUDIO R 13 Aerial input terminal

2

3

4

7

9

1-6 (No. YA102)

IC701 Pin Function List (1/2) Pin no. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 Terminal name VssP2 VssC4 V1.8C4 V3.3A3 VrefP_Sdac VrefN_Sdac VrefP_Sdac VrefN_Sdac VrefP_Sdac XtalIn XtalOut VssA1 NECK CONT V5P1 Ph2 Ph1 Gnd1 SecPll Dec8G Ewd/Avl Vdb Vda Vif1 Vif2 Vsc Iref GndIF Sif1 Sif2 AGC EHT Ssif/RefIn/Avl/RefOut AudioIn5L AudioIn5R AudioOutSL AudioOutSR DecsDem QssO/AmO/AudeEm Gnd2 PllIf SifAgc IfVo/FmRo/DvbO NC V8AudioSwitches AgcSsif V5P2 SVO/IfVo/Cvbsl Audio4InL Audio4InR Y4/Cvbs4 C4 Audio2InL Audio2InR Cvbs2/Y Audio3InL Audio3InR Y3/Cvbs C3 AudioLsL AudioLsR AudioOutHpL AudioOutHpR CVBSO/PIP Port name VSSP2 VSSC4 VDDC4 VDDA3(3.3V) VREF_POS_LSL VREF_NEG_LSL+HPL VREF_POS_LSR+HPR VREF_NEG_HPL+HPR VREF_POS_HPR XTALIN XTALOUT VSSA1 VGUARD/SWIO DECDIG VP1 PH2LF PH1LF GND1 SECPLL DECBG EWD/AVL VDRB VDRA VIFIN1 VIFIN2 VSC IREF GNDIF SIFIN1/DVBIN1 SIFIN2/DVBIN2 AGCOUT EHTO AVL/SWO/SSIF/REFO/REFIN AUDIOIN5L AUDIOIN5R AUDOUTSL AUDOUTSR DECSDEM QSSO/AMOUT/AUDEEM GND2 PLLIF SIFAGC/DVBAGC DVBO/IFVO/FMRO DVBO/FMRO VCC8V AGC2SIF VP2 IFVO/SVO/CVBSI AUDIOIN4L AUDIOIN4R CVBS4/Y4 C4 AUDIOIN2L AUDIOIN2R CVBS2/Y2 AUDIOIN3L AUDIOIN3R CVBS3/Y3 C2/C3 AUDOUTLSL AUDOUTLSR AUDOUTHPL AUDOUTHPR CVBSO/PIP I I O O O O O I I O I I I I I I I I I I I O O O O O I/O I I I I I I O I I I O O O I I I I I O I O Remark GND GND 1.8V (Digital) 3.3V 3.3V (Positive) GND 3.3V (Negative) GND 3.3V (Positive) Crystal oscillator input (24.576 MHz) Crystal oscillator input (24.576 MHz) GND V-guard input/ I/O switch Decoupling digital supply +5V Phase-2 filter Phase-1 filter GND SECAM PLL decoupling Bandgap decoupling East-West drive output or AVL capacitor Vertical drive B output Vertical drive A output IF input 1 IF input 2 Vertical sawtooth capacitor Reference current input GND SIF input 1 SIF input 2 Tuner AGC output EHT/overvoltage protection input Automatic Volume Levelling/ sound IF input / subcarrier reference output / external reference signal input for I signal mixer for DVB operation Audio-L3 input (left signal) Audio-R3 input (right signal) Audio L output Audio R output Decoupling sound demodulator QSS intercarrier output / AM output / deemphasis / (frontend audio out) GND IF-PLL loop filter AGC sound IF Not used Not used 8V AGC capacitor second sound IF 5V Video output Audio-L1 input Audio-R1 input Video V3 Not used Not used Not used Component Y/Video V2 Audio L2 input (Left signal) Audio R2 input (right signal) S-Video Y1 S-Video C1 Audio L output for audio power amplifier Audio R output for audio power amplifier Headphone L Headphone R CVBS / PIP output (No. YA102) 1-7

IC701 Pin Function List (2/2) Pin no. 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 SVM FbiSo Hout VssComb V5Comb Vin/R2/Pr Uin/B2/Pb Yin/G2/Y Ysync Yout Uout/INSSW2 NC INSSW3 R3/Pr G3/Y B3/Pb Gnd3 V5P3 BCL BLKIN Rout Gout Bout V3.3A1 RefAdN V3.3RefAdP RefAd GndA V1.8A V3.3A2 VssADC V1.8ADC REMOTE PW_LED P11/TO V1.8C2 VssC2 COMPONENT-PIP COMB_SW_NT3.5/OTHER VER_PROTECT S_REDUCE P00/I2SDI1 POWER SCL1 SDA1 V3.3P ROTATION 3.58/OTHER A_MUTE 4.5/OTHER PROT ECO_IN V1.8C1 DecV1V8 KEY_IN (Not assigned) VSSC1+P1 P24/PWM3 P25/PWM4 V1.8C3 VssC3 P12/Int2 SDA0 SCL0 Terminal name SVM FBISO/CSY HOUT VSScomb VDDcomb VIN (R/PRIN2/CX) UIN (B/PBIN2) YIN (G/YIN2/CVBS-YX) YSYNC YOUT UOUT (INSSW2) VOUT (SWO1) INSSW3 R/PRIN3 G/YIN3 B/PBIN3 GND3 VP3 BCLIN BLKIN RO GO BO VDDA1 VREFAD-NEG VREFAD_POS VREFAD GNDA VDDA(1.8V) VDDA2(3.3) VSSadc VDDadc(1.8) INT0/P0.5 P1.0/INT1 P1.1/T0 VDDC2 VSSC2 P0.4/12SWS P0.3/12SCLK P0.2/12SDO2 P0.1/12SDO1 P0.0/12SDI1/O P1.3/T1 P1.6/SCL P1.7/SDA VDDP(3.3V) P2.0/TPWM P2.1/PWMO P2.2/PWM1 P2.3/PWM2 P3.0/ADC0 P3.1/ADC1 VDDC1 DECV1V8 P3.2/ADC2 P3.3/ADC3 VSSC/P P24/PWM3 P25/PWM4 VDDC3 VSSC3 P1.2/INT2 P1.4/RX Port name I/O O I O I I I I I O O O I I I I I I I O O O I I I I I I I I I I O O O O I I/O I O O O O I I I I I I I O I I I/O I Remark Scan velocity modulation output Flyback input/sandcastle output or composite H/V timing output Horizontal output GND 5V PIP R input PIP B input PIP G input Not used Not used RGB / YPBPR insertion input Not used YPBPR insertion input Component PR input (Video-2) Component Y input (Video-2) Component PB input (Video-2) GND 5V Beam current limiter input Black current input R output G output B output 3.3V GND 3.3V (Positive) 3.3/2V GND 1.8V 3.3V GND 1.8V Remote control input POWER LED control POWER LED control 1.8V GND Not used Not used XRAY PROTECT Sound control Not used SUB POWER control I2C BUS CLOCK I2C BUS·@DATA 3.3V ROTATION 3.58 detection AUDIO MUTE 4.5 detection PROTECT ECO INPUT 1.8V (Digital) 1.8V KEY INPUT VDO DET IN Digital GND SV DET IN GTVA_RESET 1.8V (Digital) GND External interrupt I2C BUS DATA (Memory) I2C BUS CLOCK (Memory)

1-8 (No. YA102)

SECTION 3 DISASSEMBLY
3.1 DISASSEMBLY PROCEDURE 3.1.1 REMOVING THE REAR COVER · Unplug the power cord. (1) Remove the 16 screws [A] as shown in Fig.1. (2) Withdraw the REAR COVER toward you. CAUTION: When reinstalling the rear cover, carefully push it inward after inserting the MAIN PWB into the REAR COVER groove. 3.1.2 REMOVING THE CHASSIS (CHASSIS BASE AND CONTROL BASE) · Remove the REAR COVER. (1) Slightly raise the both sides of the CHASSIS by hand and remove the 2 claws [B] under the CHASSIS from the front cabinet as shown in Fig.1. (2) Withdraw the CHASSIS backward. (If necessary, take off the wire clamp, connectors etc.) NOTE: When conducting a check with power supplied, be sure to confirm that the CRT earth wire is connected to the CRT SOCKET PWB and the MAIN PWB. 3.1.3 REMOVING THE AV TERMINAL BOARD · Remove the REAR COVER. (1) Remove the 4 screws [C] as shown in Fig.1. (2) When you pull out the AV TERMINAL BOARD in the direction of arrow [D] as shown in Fig.1, it can be removed. 3.1.4 REMOVING THE CONTROL BASE · Remove the REAR COVER. · Remove the CHASSIS. (1) While pushing down the 2 claws [E] as shown in Fig. 2 and pull out the CONTROL BASE in the direction of arrow [F] as shown in Fig. 2, the control base can be removed. (If necessary, take off the wire, connectors etc.) 3.1.5 REMOVING THE SPEAKER · Remove the REAR COVER. (1) Remove the 2 screws [G] as shown in Fig.1. (2) Withdraw the SPEAKER backward. (3) Follow the same steps when removing the other hand SPEAKER. 3.1.6 CHECKING THE MAIN PW BOARD · To check the back side of the MAIN PWB. (1) Pull out the CHASSIS and CONTROL BASE. (Refer to the procedure described in REMOVING THE CHASSIS) (2) Put the CHASSIS in upright position with the MAIN PWB's solderside faced to the right. The FBT must be positioned on top. (Viewed from the rear) (3) Put the CONTROL PWBs in an appropriate position, taking care not giving tension to the ribbon cables that connect to the MAIN PWB. CAUTIONS: · Use insulating materials, if necessary, to avoid possible electrical contacts between PWBs and expose terminals, etc. · Before turning on power, make sure that the CRT earth wire and other connectors are properly connected. · When repairing, connect the DEG. COIL to the DEG. connector on the MAIN PWB. 3.1.7 WIRE CLAMPING AND CABLE TYING (1) Be sure to clamp the wire. (2) Never remove the cable tie used for tying the wires together. Should it be inadvertently removed, be sure to tie the wires with a new cable tie.

(No. YA102) 1-9

[FRONT SIDE] CONTROL BASE E

FRONT CABINET PICTURE TUBE

F

(X2) G SPEAKER
CHASSIS BASE

Fig.2

CRT SOCKET PWB

FRONT CONTROL PWB (2/2)

FRONT CONTROL PWB (1/2)

CLAW B (under side) MAIN PWB FBT Fig.2 AV TERMINAL BOARD

SPEAKER G (X2)
CONTROL BASE CHASSIS BASE CLAW B (under side)

D

C (×4)

REAR COVER

A (×16)

Fig. 1

1-10 (No. YA102)

3.2 REPLACEMENT OF MEMORY IC 3.2.1 MEMORY IC This TV uses the following memory IC. Memory IC: IC702 on MAIN PWB The memory IC memorizes data for correctly operating the video and deflection circuits. When replacing the memory IC, be sure to use the same type IC written with the initial values of data. In other words, use the specific IC listed in "PRINTED WIRING BOARD PARTS LIST". For its mounting location, refer to "ADJUSTMENT LOCATIONS". 3.2.2 PROCEDURE FOR REPLACING MEMORY IC 1. Power off Switch the power off and unplug the power cord from the wall outlet. 2. Replacing the memory IC Replace the memory IC with new one. Be sure to use the memory IC written with the initial data values. 3. Power on Plug the power cord into the wall outlet and switch the power on. 4. Check and setting of SYSTEM CONSTANT SET: (1) Press the [DISPLAY] key and the [PICTURE MODE] key on the remote control unit simultaneously. The SERVICE MENU screen will be displayed.(See Fig.1.) (2) In the SERVICE MENU, press the [DISPLAY] key and [PICTURE MODE] key simultaneously. Then, the S Y S T E M C O N S TA N T S E T s c r e e n w i l l b e displayed.(See Fig.2.) (3) Check whether the setting values of the SYSTEM CONSTANT SET are the same as those indicated in Table1. If the value is different, select the setting item with the MENU [ ]/[ ] key, and set the correct value with the MENU [ ]/[ ] key. (4) Press the [DISPLAY] key twice to return to the normal screen. 5. Receive channel setting Refer to the OPERATING INSTRUCTIONS and set the receive channels (channels preset). 6. User setting Check the user setting values in Table 2 and Table 3. If setting value is different, set the correct value. For setting, refer to the OPERATING INSTRUCTIONS. 7. Setting of SERVICE MENU Verify the setting for each setting item in the SERVICE MENU.(See Table 4.) If readjustment is necessary, perform adjustment referring to "ADJUSTMENTS PROCEDURE".
NAME OF REMOTE CONTROL KEYS

SERVICE MENU
SERVICE MENU 1. IF 2. V/C 3. AUDIO 4. DEF 6. S TATUS 5. VSM W/B 7. PLUG & PLAY (OFF) 1-7 : SELECT DISPLAY : EXIT

******* **** ***** ***** **** **** *** ***

Fig. 1

SYSTEM CONSTANT-1
SYSTEM CONSTANT SET 1 SYSTEM COMB TILT SUPER BASS TEXT LANGUAGE : MULTI YES YES NO SINGLE ERCMI : OPE DISP : EXIT

/

: SEL

SYSTEM CONSTANT-2
SYSTEM CONSTANT SET 2 SOUND BILINGUAL BLUE BACK MUTE COLOUR AUTO ECO SENSOR STEREO NO NO NO YES

/

: SEL

: OPE

DISP : EXIT

SYSTEM CONSTANT-3
SYSTEM CONSTANT SET 3 SURROUND PICTURE BOOSTER COMPONENT PIP S INPUT YES NO YES NO YES

/

: SEL

: OPE

DISP : EXIT

DISPLAY / BACK MENU

MENU MENU MENU

Fig. 2

PICTURE MODE

(No. YA102) 1-11

3.2.3 FACTORY SHIPMENT SETTING VALUE SETTING OF SYSTEM CONSTANT SET Setting value Setting item SYSTEM COMB TILT SUPER BASS TEXT Setting content
MULTI TRIPLE
YES YES YES SINGLE

AV-29VS24
THAI

AV-29VX74/G --E/R/A/P/F --PB YES YES

AV-2984V/E ----E/R/U STEREO NO

PAL
NO NO NO

MULTI YES YES NO

NO

PAT E/C

SINGLE E/R/C/M/I -----

E/R/C/M/I

LANGUAGE

E/R/A/P/F E/R/U

SOUND BILINGUAL BLUE BACK MUTE COLOUR AUTO ECO SENSOR SURROUND PICTURE BOOSTER COMPONENT PIP S INPUT

STEREO YES YES YES YES YES YES YES YES YES

PB NO NO NO NO NO NO NO NO NO

MONO

STEREO NO NO NO YES YES NO YES NO YES

Table 1

1-12 (No. YA102)

SETTING OF BASIC FUNCTIONS
Setting item POWER SUB POWER VOLUME COLOR SYSTEM SOUND SYSTEM PICTURE MODE(VSM) CINEMA SURROUND OFF TIMER STEREO MODE CHANNEL POSITION Off On 15 PAL B/G BRIGHT OFF 0 STEREO[AV-29VS24, AV-2984/E] PRESET 1 Setting value

SERVICE MENU SETTING ITEMS
Setting item 1. IF 2. V/C 1. VCO 2. DELAY POINT 1. SCREEN DATA 2. CUTOFF(B/G) 3. WDR(R/G/B) 4. BRIGHT(TV/VDO 1/2/3) 5. CONT(TV/VDO 1/2/3/TV 16:9/VDO 16:9) 6. COLOUR(TV/VDO 1/2/3/DVD) 7. TINT(TV/VDO 1/2/3) 8. SHARP 9. Y DELAY 10. TINT DVD 11. AMP T. SHARP 3. AUDIO 1. DCXO ADJ 2. NICAM lower ERRLIM Setting value 3. NICAM upper ERRLIM 4. A2 ID THR 5. MENU EQUALIZER 4. DEF 1. V-SHIFT 2. V-SLOPE 3. V-SIZE 4. H-CENT 5. H-SIZE 6. TRAPEZ 7. EW-PIN 8. COR-UP 9. COR-LO 10. ANGLE 11. BOW 12. V-S.CR 13. V-LIN 14. V-ZOOM 15. V-SCROLL 5. VSM W/B [Do not adjust] 1. BRIGHT 3. COLOUR 4. SHARP 5. HUE (COOL/WARM/NORMAL) 1. R DRIVE 2. G DRIVE 3. B DRIVE 6. STATUS [Display only] 7. PLUG & PLAY(ON) [Display only] [Do not adjust] Setting value

Table 2

SETTING OF MENU SCREEN
Setting item INPUT VNR COMPRESS (16:9) PICTURE TILT AUTO SHUTOFF CHILD LOCK BLUE BACK VIDEO-2 SET AUTO CH PRESET MANUAL CH PRESET LANGUAGE TEXT LANGUAGE OFF OFF ON VIDEO Refer to OPERATING INSTRUCTIONS Refer to OPERATING INSTRUCTIONS ENG GROUP-1[AV-29VS24] GROUP-3[AV-2984V/E] GROUP-4[AV-29VX74/G] TINT COLOUR BRIGHT CONT SHARP BALANCE SOUND MODE SOUND TURBO AI VOLUME FAVORITE CH RED FAVORITE CH GREEN FAVORITE CH BLUE AI ECO SENSOR AI ECO DISPLAY Centre Centre Centre Maximum Centre Centre DYNAMIC OFF ON PR1 PR2 PR4 OFF ON TV AUTO OFF

(BRIGHT/STANDARD/SOFT) 2. CONT

FAVORITE CH YELLOW PR3

Table 3

Table 4 (No. YA102) 1-13

3.3 REPLACEMENT OF CHIP COMPONENT 3.3.1 (1) (2) (3) (4) CAUTIONS Avoid heating for more than 3 seconds. Do not rub the electrodes and the resist parts of the pattern. When removing a chip part, melt the solder adequately. Do not reuse a chip part after removing it.

3.3.2 SOLDERING IRON (1) Use a high insulation soldering iron with a thin pointed end of it. (2) A 30w soldering iron is recommended for easily removing parts. 3.3.3 REPLACEMENT STEPS 1. How to remove Chip parts [Resistors, capacitors, etc.] (1) As shown in the figure, push the part with tweezers and alternately melt the solder at each end. 2. How to install Chip parts [Resistors, capacitors, etc.] (1) Apply solder to the pattern as indicated in the figure.

(2) Grasp the chip part with tweezers and place it on the solder. Then heat and melt the solder at both ends of the chip part. (2) Shift with tweezers and remove the chip part.

[Transistors, diodes, variable resistors, etc.] (1) Apply extra solder to each lead.
SOLDER SOLDER

[Transistors, diodes, variable resistors, etc.] (1) Apply solder to the pattern as indicated in the figure. (2) Grasp the chip part with tweezers and place it on the solder. (3) First solder lead A as indicated in the figure.

(2) As shown in the figure, push the part with tweezers and alternately melt the solder at each lead. Shift and remove the chip part.

A B C

(4) Then solder leads B and C.
A B

Note : After removing the part, remove remaining solder from the pattern.

C

1-14 (No. YA102)

SECTION 4 ADJUSTMENT
4.1 ADJUSTMENT PREPARATION (1) You can make the necessary adjustments for this unit with either the remote control unit or with the adjustment equipment and parts as given below. (2) Adjustment with the remote control unit is made on the basis of the initial setting values, however, the new setting values used for setting the screen to its optimum condition may differ from the initial settings. (3) Make sure that AC power is turned on correctly. (4) Turn on the power for the set and test equipment before use, and start the adjustment procedures after waiting at least 30 minutes. (5) Unless otherwise specified, prepare the most suitable reception or input signal for adjustment. (6) Never touch any adjustment parts, which are not specified in the list for this variable resistors, transformers, trimmer capacitors, etc. 4.2 PRESETTING BEFORE ADJUSTMENT Unless otherwise specified in the adjustment instructions, preset the following functions with the remote control unit. User mode setting position Setting item PICTURE MODE (VSM) TINT, COLOUR, BRIGHT,SHARP CONT VNR AI ECO SENSOR BALANCE SOUND TURBO CINEMA SURROUND COMPRESS BRIGHT Centre Maximum OFF OFF Centre OFF OFF 4:3 Setting value

4.3 MEASURING INSTRUMENT AND FIXTURES (1) (2) (3) (4) DC voltmeter (or Digital voltmeter) Oscilloscope Signal generator (Pattern generator) [PAL/SECAM/NTSC] Remote control unit

4.4 ADJUSTMENT ITEMS B1 VOLTAGE FOCUS ADJUSTMENT IF CIRCUIT ADJUSTMENTS · IF VCO adjustment · DELAY POINT (AGC TAKE-OVER) adjustment VIDEO CIRCUIT ADJUSTMENTS · WHITE BALANCE (Low light) adjustment · WHITE BALANCE (High light) adjustment · SUB BRIGHT adjustment · SUB CONTRAST adjustment · SUB COLOUR 1 adjustment · SUB COLOUR 2 adjustment · SUB TINT 1 adjustment · SUB TINT 2 adjustment AUDIO SETTING DEFLECTION CIRCUIT ADJUSTMENTS · V.SLOPE adjustment · V.POSITION adjustment · V.HEIGHT adjustment · H.POSITION adjustment · H. WIDTH adjustment · SIDE PIN adjustment · TRAPEZIUM adjustment · V.S-CURVE adjustment · CORNER adjustment · H. PARALLEL adjustment · H.BOW adjustment VSM PRESET SETTING PURITY AND CONVERGENCE ADJUSTMENTS · PURITY adjustment · STATIC CONVERGENCE adjustment · DYNAMIC CONVERGENCE adjustment

(No. YA102) 1-15

4.5 ADJUSTMENT LOCATIONS

FRONT CONTROL PWB ASS'Y (1/2)
SPEAKER (L) FRONT

FRONT CONTROL PWB ASS'Y (2/2)
SPEAKER (R)
J804 J803 J802 J801

S805 S801 S803 S804 S806 S802

FRONT

S901

W

CNDEG CN001 CN002 R

CN00S

POWER CORD

PW

ROTATION COIL

DEG COIL

MAIN PWB ASS'Y
CN00W CN001 CN002

FRONT

IC702 T 1

6

IC701

CNOOX 1. B1 2. NC 3. X-RAY2 4. X-RAY1 5. GND 5
6

DEF YOKE
HV 6 1
1 HVT

1

U

J805 J801 J802 J803 J804

TU001

UPPER : FOCUS LOWER : SCREEN

CRT SOCKET PWB ASS'Y
TP-47B

(SOLDER SIDE) TOP
TP-E

TP-47R

TP-47G T CRT EARTH (BRAIDED ASS'Y) 1 8 E1 E2

CRT EARTH (BRAIDED ASS'Y)

1

U

6

1-16 (No. YA102)

4.6 BASIC OPERATION IN SERVICE MENU Operate the SERVICE MENU with the remote control unit. 4.6.1 SERVICE MENU ITEMS With the SERVICE MENU, various settings (adjustments) can be made, and they are broadly classified in the following items of settings: 1. IF 2. V/C 3. AUDIO 4. DEF 5. VSM W/B 6. STATUS 7. PLUG & PLAY (ON) For entering/adjusting the setting values (adjustment values) of the IF circuit. For entering/adjusting the setting values (adjustment values) of the VIDEO circuit. For entering/adjusting the setting values (adjustment values) of the AUDIO circuit. For entering/adjusting the setting values (adjustment values) of the DEFLECTION circuit. For setting the values of STANDARD, SOFT, BRIGHT and COOL, NORMAL, WARM. This is not used for service. This is not used for service.

4.6.2 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. The SERVICE MENU screen will be displayed. (See Fig. 1 on the next page.) 2. SELECTION OF SUB MENU SCREEN Press one of the keys 1 to 6 on the remote control unit, and select the SUB MENU SCREEN from the SERVICE MENU. (See Fig.1 on the next page.) SERVICE MENU SUB MENU 1. IF 5. VSM W/B 2. V/C 6. STATUS 3. AUDIO 7. PLUG & PLAY (ON) 4. DEF 3. METHOD OF SETTING NOTES: · Once the setting values are set, they are memorized automatically. · It must not be adjusted without inputting a signal. (1) 1. IF [1.VCO ] : Under normal conditions, no adjustment is required. (a) [1] key Select 1. IF. (b) [1] key Select 1. VCO. (c) [DISPLAY] key When this is pressed twice, you will return to the SERVICE MENU. [2.DELAY POINT ] (a) [1] key (b) [2] key (c) MENU [ ]/[ ] key (d) [DISPLAY] key Select 1. IF. Select 2. DELAY POINT. Adjust the setting value. When this is pressed twice, you will return to the SERVICE MENU.

(2) 2. V/C, 3. AUDIO and 4. DEF (a) [2] ~[4] keys Select one from 2. V/C and 3. AUDIO, 4. DEF. (b) MENU [ ]/[ ] key Select setting items. (c) MENU [ ]/[ ] key Adjust the setting values of the setting items. Use the number keys on the remote control unit for setting the WHITE BALANCE. For the setting, refer to each item concerned. (d) [DISPLAY] key When this is pressed, you will return to the SERVICE MENU. (3) 5. VSM W/B (a) [5] key (b) MENU [OK] key (c) MENU [ ]/[ ] key (d) MENU [ ]/[ ] key (e) [DISPLAY] key (4) 6. STATUS This is for display only. (5) 7. PLUG & PLAY (ON) This is not used for service. 4. Release of SERVICE MENU After completing the setting, return to the SERVICE MENU by pressing the [DISPLAY] key, then again press the [DISPLAY] key to return to the normal screen. (No. YA102) 1-17 Select 5. VSM W/B. Select preset items. Adjust setting items. Adjust the setting values of the setting items. When this is pressed, you will return to the SERVICE MENU.

4.6.3 SERVICE MENU FLOW CHART
SERVICE MENU
SERVICE MENU 1. IF 2. V/C 3. AUDIO 4. DEF 5. VSM W/B 6. STATUS 7. PLUG & PLAY (OFF) 1-7 : SELECT DISPLAY : EXIT

1. IF

IF SERVICE MENU 1. VCO 2. DELAY POINT

VCO (CW) TOO HIGH ABOVE REFERENCE JUST REFERENCE BELOW REFERENCE TOO LOW

*****MHz

******* **** ***** ***** **** **** *** ***

DELAY POINT AGC TAKEOVER

**

2. V/C
Setting item V/C 1. SCREEN PAL HBC WBC BRI

** ** **

1. SCREEN (READ DATA) 2. CUTOFF (B/G) 3. WDR (R/G/B) 4. BRIGHT (TV/VDO1/2/3) 5. CONT (TV/VDO1/2/3/TV 16:9/VDO16:9) 6. COLOUR (TV/VDO1/2/3/ DVD) 7. TINT (TV/VDO1/2/3)

8. SHARP (TV/VDO1/2/3) 9. Y DELAY (TV/VDO1/2/3 /S-DVO)) 10. TINT DVD 11. AMP T.SHARP

6. STATUS

3. AUDIO
Setting item AUDIO 1. DCXO ADJ. = NOT NICAM

STATUS V/C STATUS ECO EOF NOL VNR

***

1. DCXO ADJ 2. NICAM lower ERRLIM 3. NICAM upper EERLIM 4. A2 ID THR MENU EQUALIZER DYNAMIC MUSIC NEWS USER

**

**

**

*****

0002 0009 000A

COSMIC STATUS

** ** ** ** ** ** ** **

******* ******* *******

4. DEF
4 : 3 / 16 : 9 DEF FULL 1. V-SHIFT 50Hz Setting item

*** ( ) **

1. V-SHIFT 2. V-SLOPE 3. V-SIZE 4. H-CENT 5. H-SIZE 6. TRAPEZ 7. EW-PIN 8. COR-UP

9. COR-LO 10. ANGLE 11. BOW 12. V-S. CR 13. V-LIN 14. V-ZOOM 15. V-SCROLL

5. VSM W/B
Setting item VSM PRESET 1. BRIGHT BRIGHT

Setting value (Hexadecimal) Setting value Sereen size FULL COMPRESS

***

1. BRIGHT 2. CONT 3. COLOUR 4. SHARP 5.HUE

1. R-DRIVE 2. G-DRIVE 3. B-DRIVE

1-18 (No. YA102)

Fig. 1

4.7 ADJUSTMENT PROCEDURE 4.7.1 B1 VOLTAGE Item B1 VOLTAGE check Measuring instrument Signal generator Test point Adjustment part Description (1) Receive a black and white signal. (2) Connect a DC voltmeter between B1 and GND (between pins 1 and 5 of the connector CN00S). (3) Make sure that the voltage is DC134.5V ± 2V.

B1 (pin 1) GND (pin 5) [CN00X DC voltmeter connector in MAIN PWB]

4.7.2 FOCUS ADJUSTMENT Item FOCUS adjustment Measuring instrument Signal generator Test point Adjustment part FOCUS VR [In HVT] Description Notes: · Set PICTURE MODE (VSM) to "BRIGHT". [AV-29VS24 only] · The final adjustment of CONVERGENCE must be done after the FOCUS adjustment. (CONVERGENCE is affected by the FOCUS adjustment.) If any aeviation in CONVERGENCE is found, PURITY must be adjusted to restore the convergence. (1) Receive a crosshatch signal. (2) Adjust the FOCUS VR so that the vertical and horizontal lines will be clear and in fine detail on the screen. (3) Make sure that the picture is in focus even when the screen gets darkened. 4.7.3 IF CIRCUIT ADJUSTMENTS Item IF VCO check Measuring instrument Remote control unit Test point Adjustment part [1. IF] 1. VCO (CW) Description Note: · Under normal conditions, no adjustment is required. (1) (2) (3) (4) Receive a broadcast signal. Select 1. IF from the SERVICE MENU. Select 1. VCO. Check the characters colour of the BELOW REFERENCE displayed to yellow. (5) Press the [DISPLAY] key three times to return to normal screen.

VCO (CW)

.

MHz

Receiving frequency

TOO HIGH ABOVE REFERENCE BELOW REFERENCE TOO LOW DISPLAY : EXIT

YELLOW

DELAY POINT Remote (AGC control unit TAKE-OVER) adjustment

[1. IF] 2. DELAY POINT

(1) (2) (3) (4)

Adjustment item 2. DELAY POINT (AGC TAKE-OVER)

Initial setting value NTSC 3.58 OTHERS VHF UHF VHF UHF 30 30 30 30

Receive a black and white broadcast signal (colour off). Select 1. IF from the SERVICE MENU. Select 2. DELAY POINT. Adjust in order to eliminate any noise or beat from the image. Any increase above the initial value produces the noise and any decrease below it produces the beat. (5) Press the [DISPLAY] key three times to return to the normal screen. (6) Turn to other channels and make sure that there are no irregularities.

(No. YA102) 1-19

4.7.4 VIDEO 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. · Do not change the initial setting values of the setting (adjustment) items not listed in "ADJUSTMENT PROCEDURE".
[AV-29VS24] Initial setting value Adjustment item BRI B G 3. WDR R G B 4. BRIGHT RF VIDEO 1(COMPOSITE/S) VIDEO 2(COMPONENT) VIDEO 3(COMPOSITE) 5. CONT. RF VIDEO RF 16:9 VIDEO 16:9 6. COLOUR RF VIDEO 7. TINT RF VIDEO 8. SHARP RF VIDEO 9. Y DELAY RF VIDEO S-VIDEO 10. TINT DVD RF, VIDEO, S-VIDEO COMPONENT 11. AMP T.SHARP RF, VIDEO [AV-29VX74/G, AV-2984V/E] Initial setting value Adjustment item BRI B G 3. WDR R G B 4. BRIGHT RF VIDEO 1(COMPOSITE/S) VIDEO 2(COMPONENT) VIDEO 3(COMPOSITE) 5. CONT. RF VIDEO RF 16:9 VIDEO 16:9 6. COLOUR RF VIDEO 7. TINT RF VIDEO 8. SHARP RF VIDEO 9. Y DELAY RF VIDEO S-VIDEO 10. TINT DVD RF, VIDEO, S-VIDEO COMPONENT 11. AMP T.SHARP RF, VIDEO 1-20 (No. YA102) 1. SCREEN 2. CUTOFF Variable range 0 ~ 63 0 ~ 63 0 ~ 63 0 ~ 63 0 ~ 63 0 ~ 63 0 ~ 63 -32 ~ +31 -32 ~ +31 -32 ~ +31 0 ~ 63 -32 ~ +31 -32 ~ +31 -32 ~ +31 0 ~ 63 -32 ~ +31 -32 ~ +31 -32 ~ +31 0 ~ 63 0 ~ 63 0 ~ 15 0 ~ 15 0 ~ 15 0 ~ 63 -32 ~ +31 0 ~ 63 PAL 32 11 7 32 32 45 39 -1 0 -3 32 +2 0 --42 -1 ----22 35 9 7 9 29 --0 SECAM 32 11 7 32 32 45 39 -1 0 -3 32 +2 0 --32 0 ----22 35 7 7 10 32 --0 NTSC3.58 NTSC4.43 32 11 7 32 32 45 39 -1 0 -3 32 +2 0 --37 -3 +27 +4 22 35 12 7 12 32 --0 32 11 7 32 32 45 39 -1 0 -3 32 +2 0 ---3 +3 -4 +2 22 35 7 7 12 32 --0 COMPONENT(V-2) 525i 625i 32 32 32 0 0 0 0 0 0 0 --+4 -------2 ------15 --------+3 0 32 32 32 0 0 0 0 0 0 0 --+4 ------0 ------15 ---------2 0 1. SCREEN 2. CUTOFF Variable range 0 ~ 63 0 ~ 63 0 ~ 63 0 ~ 63 0 ~ 63 0 ~ 63 0 ~ 63 -32 ~ +31 -32 ~ +31 -32 ~ +31 0 ~ 63 -32 ~ +31 -32 ~ +31 -32 ~ +31 0 ~ 63 -32 ~ +31 -32 ~ +31 -32 ~ +31 0 ~ 63 0 ~ 63 0 ~ 15 0 ~ 15 0 ~ 15 0 ~ 63 -32 ~ +31 0 ~ 63 PAL 32 11 7 32 32 45 39 -1 0 0 32 +2 0 --42 -1 ----22 35 9 7 9 29 --0 SECAM 32 11 7 32 32 45 39 -1 0 0 32 +2 0 --32 0 ----22 35 7 7 10 32 --0 NTSC3.58 NTSC4.43 32 11 7 32 32 45 39 -1 0 0 32 +2 0 --37 -3 +27 +4 22 35 12 7 12 32 --0 32 11 7 32 32 45 39 -1 0 0 32 +2 0 ---3 0 -4 +11 22 35 7 7 12 32 --0 COMPONENT(V-2) 525i 625i 32 32 32 0 0 0 0 0 0 0 --+4 ------+7 ------15 --------0 0 32 32 32 0 0 0 0 0 0 0 --+4 ------0 ------15 ---------2 0

Item WHITE BALANCE (Low light) adjustment

Measuring instrument Signal generator Remote control unit

Test point

Adjustment part [2. V/C] 2.CUTOFF (B) 2.CUTOFF (G) SCREEN VR [In HVT]

Description Note: · Set PICTURE MODE (VSM) to "BRIGHT". (1) (2) (3) (4) (5) Receive a PAL black and white signal (colour off). Select 2. V/C from the SERVICE MENU. Select 2. CUTOFF (B) and (G). Set each value to initial setting value with the [4] / [7] keys and [5] / [8] keys. Turn the SCREEN VR fully counterclockwise, then slowly turn it clockwise to where a red, blue or green colour is faintly visible. Use the [4] / [7] and [5] / [8] keys to adjust so that the other 2 colours appear white. Turn the SCREEN VR to where the single horizontal line glows faintly. Press the [2] key to return to 2. CUTOFF screen. Press the [DISPLAY] key twice to return to the normal screen. Variable range 0 ~ 63 0 ~ 63 Initial setting value 11 7

V/C 2. CUTOFF

PAL (B) (G)

** (**) ** (**)

(6) (7) (8) (9)

REMOTE CONTROL UNIT
1 2 3 G CUTOFF ( )

Adjustment Item 2. CUTOFF B G

4 B CUTOFF ( ) 7 B CUTOFF ( )

5

6

8

9

G CUTOFF (

)

WHITE BALANCE (High light) adjustment

Signal generator Remote control unit

[2. V/C] 3.WDR (R) 3.WDR (G) 3.WDR (B)

Notes: · Proceed to the following adjustment after having completed the WHITE BALANCE (Low light) adjustment. · Set PICTURE MODE (VSM) to "BRIGHT". (1) (2) (3) (4) Receive a PAL black and white signal (colour off). Select 2. V/C from the SERVICE MENU. Select 3. WDR (R), (G) and (B). Set each value to initial setting value with the [4] to [9] keys. (5) Use the [4] to [9] keys to produce a white screen. (6) Press the [DISPLAY] key twice to return to the normal screen. Adjustment Item Variable range 0 ~ 63 0 ~ 63 0 ~ 63 Initial setting value 32 32 45

V/C 3. WDR

PAL (R) (G) (B)

** (**) ** (**) ** (**)

REMOTE CONTROL UNIT
1 2 3 G DRIVE ( B DRIVE ( 7 R DRIVE ( ) 8 9 B DRIVE ( G DRIVE ( ) ) ) )

R 3. WDR G B

4 R DRIVE ( )

5

6

(No. YA102) 1-21

Item SUB BRIGHT adjustment

Measuring instrument Remote control unit

Test point

Adjustment part [2. V/C] 4. BRIGHT Notes:

Description

· Proceed to the following adjustment after having completed

the WHITE BALANCE (Low light) and WHITE BALANCE (High light) adjustment. · Set PICTURE MODE (VSM) to "BRIGHT". Receive a broadcast. Select 2. V/C from the SERVICE MENU. Select 4. BRIGHT. Set the initial setting value. If the brightness is not best with the initial setting value, make fine adjustment until you get the best brightness. (6) Press the [DISPLAY] key twice to return to the normal screen. SUB CONTRAST adjustment Remote control unit [2. V/C] 5. CONT Notes: (1) (2) (3) (4) (5)

· Proceed to the following adjustment after having completed
the SUB BRIGHT adjustment.

· Set PICTURE MODE (VSM) to "BRIGHT".
Receive a broadcast. Select 2. V/C from the SERVICE MENU. Select 5. CONT. Set the initial setting value. If the contrast is not best with the initial setting value, make fine adjustment until you get the best contrast. (6) Press the [DISPLAY] key twice to return to the normal screen. SUB COLOUR 1 adjustment Remote control unit [2. V/C] 6. COLOUR [Method of adjustment without measuring instrument] Notes: · Proceed to the following adjustment after having completed the SUB CONTRAST adjustment. · Set PICTURE MODE (VSM) to "BRIGHT". - PAL COLOUR (1) Receive a PAL broadcast. (2) Select 2. V/C from the SERVICE MENU. (3) Select 6. COLOUR. (4) Set the initial setting value for PAL COLOUR. (5) If the colour is not best with the initial setting value, adjust until you get the best colour. (6) Press the [DISPLAY] key twice to return to the normal screen. - SECAM COLOUR (1) Receive a SECAM broadcast. (2) Press the [COLOUR SYSTEM] key to select the SECAM colour system. (3) Adjust SECAM COLOUR in the same way as for "PAL COLOUR". - NTSC 3.58 COLOUR (1) Receive a NTSC 3.58MHz broadcast. (2) Press the [COLOUR SYSTEM] key to select the NTSC 3.58 colour system. (3) Adjust NTSC 3.58 COLOUR in the same way as for "PAL COLOUR". - NTSC 4.43 COLOUR When adjustment is done for NTSC 3.58 COLOUR, appropriate values are automatically set for NTSC 4.43 COLOUR. (1) (2) (3) (4) (5)

1-22 (No. YA102)

Item SUB COLOUR 2 adjustment

Measuring instrument Signal generator

Test point

Adjustment part [2. V/C] 6. COLOUR

Description [Method of adjustment using measuring instrument] Notes: · Proceed to the following adjustment after having completed the SUB CONTRAST adjustment. · Set PICTURE MODE (VSM) to "BRIGHT". - PAL COLOUR (1) Receive a PAL colour bar signal (full field colour bar 75% white). (2) Select 2. V/C from the SERVICE MENU. (3) Select 6. COLOUR. (4) Set the initial setting value of PAL COLOUR. (5) Connect the oscilloscope between TP-47G and TP-E. (6) Adjust PAL COLOUR to set the value (A) in the figure to +18V [AV-29VS24] or +16V [AV-29VX74/G, AV-2984V/E]. - SECAM COLOUR (1) Receive a SECAM colour bar signal (colour bar 75% white). (2) Press the [COLOUR SYSTEM] key to select the SECAM colour system. (3) Set the initial setting value of SECAM COLOUR. (4) Adjust SECAM COLOUR to set the value (A) in the figure to +7V [AV-29VS24] or +2V [AV-29VX74/G, AV-2984V/E]. - NTSC 3.58 COLOUR (1) Receive a NTSC 3.58 colour bar signal (full field colour bar 75% white). (2) Press the [COLOUR SYSTEM] key to select the NTSC 3.58 colour system. (3) Set the initial setting value of NTSC 3.58 COLOUR. (4) Adjust NTSC 3.58 COLOUR to set the value (A) in the figure to +8V [AV-29VS24] or +15V [AV-29VX74/G, AV2984V/E]. - NTSC 4.43 COLOUR When adjustment is done for NTSC 3.58 COLOUR, appropriate values are automatically set for NTSC 4.43 COLOUR. [Method of adjustment without measuring instrument] Notes: · Proceed to the following adjustment after having completed the SUB CONTRAST adjustment. · Set PICTURE MODE (VSM) to "BRIGHT". - NTSC 3.58 TINT (1) Receive a NTSC 3.58 colour bar signal (full field colour bar 75% white). (2) Press the [COLOUR SYSTEM] key to select the NTSC 3.58 colour system. (3) Select 2. V/C from the SERVICE MENU. (4) Select 7. TINT. (5) Set the initial setting value of NTSC 3.58. (6) If you cannot get the best tint with the initial setting value, make fine adjustment until you get the best tint. (7) Press the [DISPLAY] key twice to return to the normal screen. - NTSC 4.43 TINT When adjustment is done for NTSC 3.58 TINT, appropriate values are automatically set for NTSC 4.43 TINT.

TP-47G TP-E [CRT Oscilloscope SOCKET PWB] Remote control unit

M R

B

(A)
C Y (­) 0V (+)

W

G

SUB TINT 1 adjustment

Signal generator Remote control unit

[2. V/C] 7. TINT

(No. YA102) 1-23

Item SUB TINT 2 adjustment

Measuring instrument Signal generator

Test point

Adjustment part [2. V/C] 7. TINT

Description [Method of adjustment using measuring instrument] Notes: · Proceed to the following adjustment after having completed the SUB CONTRAST adjustment. · Set PICTURE MODE (VSM) to "BRIGHT". - NTSC 3.58 TINT (1) Receive a NTSC 3.58 colour bar signal (full field colour bar 75% white). (2) Press the [COLOUR SYSTEM] key to select the NTSC 3.58 colour system. (3) Select 2. V/C from the SERVICE MENU. (4) Select 7. TINT. (5) Set the initial setting value of NTSC 3.58. (6) Connect the oscilloscope between TP-47G and TP-E. (7) Adjust NTSC 3.58 TINT to set the value (B) in the figure to +9V [AV-29VS24] or +13V [AV-29VX74/G, AV-2984V/E]. (8) Press the [DISPLAY] key twice to return to the normal screen. - NTSC 4.43 TINT When adjustment is done for NTSC 3.58 TINT, appropriate values are automatically set for NTSC 4.43 TINT.

TP-47G TP-E [CRT Oscilloscope SOCKET PWB] Remote control unit

M

B R

(B)

C W
Y G

(­) 0V (+)

4.7.5 AUDIO SETTING
This submenu is for display only, no adjustment is required.

Function AUDIO

Item 1. DC XO ADJ 2. NICAM LOWER ERR LIM 3. NICAM UPPER ERR LIM 4. A2 ID THR Item DYNAMIC MUSIC NEWS USER 100Hz +4 +7 -6 0 300Hz +3 +2 +1 0

Setting value FOH 6FH BOH 00H 1kHz -10 +5 +6 0 3kHz +3 +2 +1 0 8kHz +4 +7 -6 0

Function MENU EQUALIZER

1-24 (No. YA102)

4.7.6 DEFLECTION 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. · When performing deflection circuit adjustment, adjusts PAL signal (fv: 50 Hz) in 4:3 mode and 16:9 mode respectively, and adjust the NTSC signal (fv: 60 Hz) similarly. Note: Proceed to the following adjustment after having completed the adjustments of SUB BRIGHT and SUB PICTURE. 4. DEF Initial setting value Adjustment item Variable range 50Hz 1. V-SHIFT -32 ~ +31 2. V-SLOPE -32 ~ +31 3. V-SIZE -32 ~ +31 4. H-CENT -32 ~ +31 5. H-SIZE -32 ~ +31 6. TRAPEZ -32 ~ +31 7. EW-PIN -32 ~ +31 8. COR-UP -32 ~ +31 9. COR-LO -32 ~ +31 10. ANGLE -32 ~ +31 11. BOW -32 ~ +31 12. V-S.CR -32 ~ +31 13. V-LIN -32 ~ +31 14. V-ZOOM -32 ~ +31 15. V-SCROLL -32 ~ +31 NOTE: The value with an asterisk * is variable for adjustment. COMPRESS : OFF (4:3) Item V. SLOPE adjustment Measuring instrument Signal generator Remote control unit Test point Adjustment part [4. DEF] 2. V-SLOPE Description - PAL V. SLOPE (1) Receive a PAL circle pattern signal of vertical frequency 50Hz. (2) Select 4. DEF from the SERVICE MENU. (3) Select 2. V-SLOPE. (4) Set the initial setting value of 2. V-SLOPE. (5) Adjust 2. V-SLOPE to make "A = B". (6) Press the [DISPLAY] key to refurn to SERVICE MENU screen. - NTSC V. SLOPE (1) Receive a NTSC circle pattern signal of vertical frequency 60Hz. (2) Make similar adjustment of NTSC V- SLOPE in the same way as for "PAL V-SLOPE". - PAL V. POSITION (1) Receive a PAL circle pattern signal of vertical frequency 50Hz. (2) Select 1. V-SHIFT. (3) Set the initial setting value of 1. V-SHIFT. (4) Adjust 1. V-SHIFT to make "A = B". - NTSC V. POSITION (1) Receive a NTSC circle pattern signal of vertical frequency 60Hz. (2) Make similar adjustment of NTSC V. POSITION in the same way as for "PAL V. POSITION". 0* 0* +15* +35* +45* 0* -12* 0* 0* 0* 0* 0* 0* +25 +32 4:3 60Hz 0* 0* 0* 0* 0* 0* 0* 0* 0* 0* 0* 0* 0* 0 0 COMPRESS (16:9) 60Hz 50Hz 0* 0* -4* 0* 0* 0* 0* 0* 0* 0* 0* 0* 0* -23* 0 0* 0* -2* 0* 0* 0* 0* 0* 0* 0* 0* 0* 0* +3* 0

A Blanking line B

V. POSITION adjustment

Signal generator Remote control unit

[4. DEF] 1. V-SHIFT

(No. YA102) 1-25

Item V. HEIGHT adjustment

Measuring instrument Signal generator Remote control unit

Test point

Adjustment part [4. DEF] 3. V-SIZE 14. V-ZOOM

Description - PAL V. HEIGHT (1) Receive a PAL crosshatch signal. (2) Select 3. V-SIZE. (3) Set the initial setting value of 3. V-SIZE. (4) Select 14. V-ZOOM. (5) Set the initial setting value of 14. V-ZOOM. (6) Adjust 14. V-ZOOM to make the vertical screen size to 92% of the picture size. - NTSC V. HEIGHT (1) Receive a NTSC crosshatch signal. (2) Make similar adjustment of NTSC V. HEIGHT in the same way as for "PAL V. HEIGHT".

Screen size 92%

Picture size 100%

H. POSITION adjustment

Signal generator Remote control unit

[4. DEF] 4. H-CENT

- PAL H. POSITION (1) Receive a PAL circle pattern signal. (2) Select 4. H-CENT. (3) Set the initial setting value of 4. H-CENT. (4) Adjust 4. H-CENT to make "C = D". - NTSC H. POSITION (1) Receive a NTSC circle pattern signal. (2) Make similar adjustment of NTSC H. POSITION in the same way as for "PAL H. POSITION".

C

D

H. WIDTH adjustment

Signal generator Remote control unit

[4.DEF] 5. H-SIZE

- PAL H. WIDTH (1) Receive a PAL crosshatch signal. (2) Select 5. H-SiZE. (3) Set the initial setting value of 5. H-SIZE. (4) Adjust 5. H-SIZE to make the horizontal screen size to 91% of the picture size. - NTSC H. WIDTH (1) Receive a NTSC crosshatch signal. (2) Make similar adjustment of NTSC H. WIDTH in the same way as for "PAL H. WIDTH".

Screen size 91%

Picture size 100%

1-26 (No. YA102)

Item SIDE PIN adjustment

Measuring instrument Signal generator Remote control unit

Test point

Adjustment part [4. DEF] 7. EW-PIN

Description - PAL SIDE PIN (1) Receive a PAL crosshatch signal. (2) Select 7. EW-PIN. (3) Set the initial setting value of 7. EW-PIN. (4) Adjust 7. EW-PIN so that the first vertical lines at the left and right edges on the screen are straight. - NTSC SIDE PIN (1) Receive a NTSC crosshatch signal. (2) Make similar adjustment of NTSC SIDE PIN in the same way as for "PAL SIDE PIN".

Straight

TRAPEZIUM adjustment

Signal generator Remote control unit
Parallel

[4.DEF] 6. TRAPEZ

- PAL TRAPEZIUM (1) Receive a PAL crosshatch signal. (2) Select 6. TRAPEZ. (3) Set the initial setting value of 6. TRAPEZ. (4) Adjust 6. TRAPEZ so that the vertical lines at the left and right edges on the screen are in parallel. - NTSC TRAPEZIUM (1) Receive a NTSC crosshatch signal. (2) Make similar adjustment of NTSC TRAPEZIUM in the same way as for "PAL TRAPEZIUM".

V. LINEARITY adjustment

Signal generator Remote control unit

[4. DEF] 12. V-S.CR 13. V-LIN

- PAL V. LINEARITY (1) Receive a PAL crosshatch signal. (2) Select 12. V-S.CR. (3) Set the initial setting value of 12. V-S.CR.
(4) Select 13. V-LIN. (5) Set the initial setting value of 13. V-LIN.

TOP

(6) Adjust 12. V-S.CR and 13. V-LIN so that the spaces of each line on TOP, CENTRE and BOTTOM become uniform. - NTSC V. LINEARITY (1) Receive a NTSC crosshatch signal. (2) Make similar adjustment of NTSC V-S. CR in the same way as for "PAL V-S. CR".

CENTRE

BOTTOM

(No. YA102) 1-27

Item CORNER PIN adjustment

Measuring instrument Signal generator Remote control unit

Test point

Adjustment part [4. DEF] 8. COR-UP 9. COR-LO

Description - PAL CORNER PIN (1) Receive a PAL crosshatch signal. (2) Select 8. COR-UP. (3) Set the initial setting value of 8. COR-UP. (4) Select 9. COR-LO. (5) Set the initial setting value of 9. COR-LO. (6) Adjust 8. COR-UP and 9. COR-LO so that the vertical lines at the four corners on the screen are straight. - NTSC CORNER PIN (1) Receive a NTSC crosshatch signal. (2) Make similar adjustment of NTSC CORNER in the same way as for "PAL CORNER".

Straigt

H. PARALLEL Signal adjustment generator Remote control unit

[4.DEF] 10. ANGLE

- PAL H. PARALLEL (1) Receive a PAL crosshatch signal. (2) Select 10. ANGLE. (3) Set the initial setting value of 10. ANGLE. (4) Adjust 10. ANGLE to optimize the trapezium distortion at the centre of the screen. - NTSC H. PARALLEL (1) Receive a NTSC crosshatch signal. (2) Make similar adjustment of NTSC H. PARALLEL in the same way as for "PAL H. PARALLEL".

Parallel

H. BOW adjustment

Signal generator Remote control unit

[4.DEF] 11. BOW

- PAL H. BOW (1) Receive a PAL crosshatch signal. (2) Select 11. BOW. (3) Set the initial setting value of 11. BOW. (4) Adjust 11. BOW to optimize the horizontal arc distortion.

Straight

- NTSC H. BOW (1) Receive a NTSC crosshatch signal. (2) Make similar adjustment of NTSC H. BOW in the same way as for "PAL H. BOW". (3) Press the [DISPLAY] key twice to return to the normal screen.

1-28 (No. YA102)

COMPRESS : ON (16:9) Item V. HEIGHT adjustment Measuring instrument Signal generator Remote control unit Test point Adjustment part [4.DEF] 14. V. ZOOM 3. V-SIZE Description - PAL V. HEIGHT (1) Receive a PAL crosshatch signal of vertical frequency 50Hz. (2) Press the [MENU] key and select PICTURE. (3) Select PICTURE FEATURES. (4) Select COMPRESS (16 : 9) and set COMPRESS to ON. (5) Select 4. DEF from the SERVICE MENU. (6) Set the initial setting value of 14. V. ZOOM. (7) Select 3. V-SIZE. (8) Set the initial setting value of 3. V-SIZE. (9) Adjust 3. V-SIZE to set the vertical amplitude of the image to 305mm. - NTSC V. HEIGHT (1) Receive a NTSC crosshatch signal of vertical frequency 60Hz. (2) Make similar adjustment of NTSC V. HEIGHT in the same way as for "PAL V. HEIGHT".

Screen size

Screen size

Vertical amplitude

V. SLOPE adjustment

Signal generator Remote control unit

[4.DEF] 2. V-SLOPE

- PAL V. SLOPE (1) Receive a PAL circle pattern signal of vertical frequency 50Hz. (2) Select 4. DEF from the SERVICE MENU. (3) Select 2. V-SLOPE. (4) Set the initial setting value of 2. V-SLOPE. (5) Adjust 2. V-SLOPE to make "A = B". (6) Press the [DISPLAY] key to return to SERVICE MENU screen. - NTSC V. SLOPE (1) Receive a NTSC circle pattern signal of vertical frequency 60Hz. (2) Make similar adjustment of NTSC V. SLOPE in the same way as for "PAL V. SLOPE".

A

B

Blanking line

(No. YA102) 1-29

Item SIDE PIN adjustment

Measuring instrument Signal generator Remote control unit

Test point

Adjustment part [4. DEF] 7. EW-PIN

Description - PAL SIDE PIN (1) Receive a PAL crosshatch signal. (2) Select 7. EW-PIN. (3) Set the initial setting value of 7. EW-PIN. (4) Adjust 7. EW-PIN so that the first vertical lines at the left and right edges on the screen are straight. - NTSC SIDE PIN (1) Receive a NTSC crosshatch signal. (2) Make similar adjustment of NTSC SIDE PIN in the same way as for "PAL SIDE PIN".

Straight

TRAPEZIUM adjustment

Signal generator Remote control unit

[4. DEF] 6. TRAPEZ

- PAL TRAPEZIUM PIN (1) Receive a PAL crosshatch signal. (2) Select 6. TRAPEZ. (3) Set the initial setting value of 6. TRAPEZ. (4) Adjust 6. TRAPEZ so that the vertical lines at the left and right edges on the screen are in parallel. - NTSC TRAPEZIUM PIN (1) Receive a NTSC crosshatch signal. (2) Make similar adjustment of NTSC TRAPEZIUM in the same way as for "PAL TRAPEZIUM".

Parallel

CORNER PIN adjustment

Signal generator Remote control unit
Straigt

[4. DEF] 8. COR-UP 9. CO-LO

- PAL CORNER PIN (1) Receive a PAL crosshatch signal. (2) Select 8. COR-UP. (3) Set the initial setting value of 8. COR-UP. (4) Select 9. COR-LO. (5) Set the initial setting value of 9. COR-LO. (6) Adjust 8. COR-UP and 9. COR-LO so that the vertical lines at the four corners on the screen are straight. - NTSC CORNER PIN (1) Receive a NTSC crosshatch signal. (2) Make similar adjustment of NTSC CORNER in the same way as for "PAL CORNER". (3) Press the [DISPLAY] key twice to return to the normal screen.

1-30 (No. YA102)

VIDEO - 2 SET : COMPONENT Item H. POSITION adjustment Measuring instrument Signal generator Remote control unit
C D

Test point

Adjustment part [4. DEF] 4. H-CENT

Description (1) Receive a PAL circle pattern signal to VIDEO-2 component terminal. (2) Select VIDEO-2 SET from the MENU and set VIDEO-2 SET to COMPONENT. (3) Select 4. DEF from the SERVICE MENU. (4) Select 4. H-CENT. (5) Set the initial setting value of 4. H-CENT. (6) Adjust 4. H-CENT to make "C=D". (7) Press the [DISPLAY] key twice to return to the normal screen.

4.7.7 VSM PRESET SETTING Item VSM PRESET setting Measuring instrument Remote control unit Test point Adjustment part [5. VSM W/B] 1. BRIGHT 2. CONT 3. COLOUR 4. SHARP 5. HUE 1. R-DRIVE 2. G-DRIVE 3. B-DRIVE Description (1) Select 5. VSM W/B from the SERVICE MENU. (2) Select BRIGHT with the MENU [OK] key. (3) Set the value of 1. BRIGHT ~ 5. HUE to the values shown in the table. (4) Respectively select the VSM PRESET mode for SOFT and STANDARD. (5) Select COOL with the MENU [OK] key. (6) Set the values of 1. R-DRIVE ~ 3. B-DRIVE to the value shown in the table. (7) Select the W/B preset for WARM and NORMAL, respectively. (8) Press the [DISPLAY] key twice to return to the normal screen. [Setting Values for SUB 5. VSM W/B] VSM preset
VSM PRESET BRIGHT 1. BRIGHT

SUB MENU 5. VSM W/B

Setting item 1. BRIGHT 2. CONT 3. COLOUR 4. SHARP 5. HUE W/B preset Setting item 1. R-DRIVE 2. G-DRIVE 3. B-DRIVE

BRIGHT 0 +15 0 0 0 COOL 0 0 0

STANDARD 0 0 0 0 0 WARM +10 -4 -12

SOFT +2 -3 0 -10 0 NOMAL +2 0 -10

***

(No. YA102) 1-31

4.7.8 PURITY AND CONVERGENCE [AV-29VS24] PURITY ADJUSTMENT Note: The final adjustment of CONVERGENCE must be done after the FOCUS adjustment. (CONVERGENCE is affected by the FOCUS adjustment.) If CONVERGENCE is found deviated after the FOCUS adjustment, the PURITY adjustment should be checked and reset, if required.
CRT

WEDGE

DEFLECTION YOKE

P

Demagnetize the CRT with the demagnetizer. Loosen the retainer screw of the deflection yoke. Remove the wedges. Input a green raster signal from the signal generator, and turn the screen to green raster. (5) Move the deflection yoke backward. (6) Bring the long lug of the purity magnets on the short lug and position them horizontally. (Fig. 2) (7) Adjust the gap between two lugs so that the GREEN RASTER will come into the centre of the screen. (Fig. 3) (8) Move the deflection yoke forward, and fix the position of the deflection yoke so that the whole screen will become green. (9) Insert the wedge to the top side of the deflection yoke so that it will not move. (10) Input a crosshatch signal. (11) Verify that the screen is horizontal. (12) Input red and blue raster signals, and make sure that the purity is properly adjusted.

(1) (2) (3) (4)

46

P/C MAGNETS

· P/C MAGNETS P : PURITY MAGNET 4 : 4 POLES (convergence magnets) 6 : 6 POLES (convergence magnets)

Fig. 1

PURITY MAGNETS Long lug

Short lug Bring the long lug over the short lug and position them horizontally.

Fig. 2

(FRONT VIEW)

GREEN RASTER

CENTRE

Fig. 3

1-32 (No. YA102)

STATIC CONVERGENCE ADJUSTMENT (1) Input a crosshatch signal. (2) Using 4-pole convergence magnets, overlap the red and blue lines in the centre of the screen (Fig. 4) and turn them to magenta (red/blue). (3) Using 6-pole convergence magnets, overlap the magenta(red/blue) and green lines in the centre of the screen and turn them to white. (4) Repeat (2) and (3) above, and make the best convergence.

(FRONT VIEW)

DYNAMIC CONVERGENCE ADJUSTMENT (1) Move the deflection yoke up and down and overlap the lines in the periphery. (Fig. 5) (2) Move the deflection yoke from the left to the right and overlap the lines in the periphery. (Fig. 6) (3) Repeat (1) and (2) above, and make the best convergence. (4) Adjust XV by XV coil. (Fig.7)
NOTES:

(FRONT VIEW) RED GREEN BLUE

RED GREEN BLUE BLUE RED

RED GREEN BLUE

· After the adjustment, fix the wedge at the original position. · Fasten the retainer screw of the deflection yoke. · Fix the P/C magnets with glue.

GREEN

(FRONT VIEW) RED GREEN BLUE BLUE GREEN RED RED GREEN BLUE

BLUE GREEN RED

(FRONT VIEW)

GREEN

(No. YA102) 1-33

SECTION 5 TROUBLESHOOTING
5.1 SELF CHECK FUNCTIONS 5.1.1 OUTLINE This model has self check functions given below. When an abnormality has been detected, the SUB POWER is turned off and POWER LED flashes to inform of the failure. An abnormality is detected by the signal input state of the control line connected to the microcomputer.

5.1.2 SELF CHECK ITEMS Check item B1 over-current protection Details of detection An over-current on the low B1 line is detected. Operation of CRT neck protection circuit Method of detection The main microcomputer detects the possible abnormality at 24-msec. intervals and judges the results in every 16 time. Of the 16 times, if NG is detected more than 9 times, it is judged that there is an abnormality. State of abnormality When an abnormality has been detected, the SUBPOWER is turned off. While the SUB-POWER is being turned off, the POWER key on the remote control unit is not operational until the power cord is disconnected and connected again.

CRT neck broken protection

5.1.3 SELF CHECK INDICATING FUNCTION When an abnormality has been detected at about 5 seconds after the power was turned on, the SUB POWER is turned off immediately and the POWER LED flashes.
After about 5 seconds Detection of an abnormality

Power on Port

Start of detection

Flashing LED

SUB-POWER OFF

[ INDICATION BY THE POWER LED] Item B1 over-current protection / CRT neck broken portection 0.3 seconds LED flashing intervals

1-34 (No. YA102)

Victor Company of Japan, Limited AV & MULTIMEDIA COMPANY VIDEO DISPLAY CATEGORY 12, 3-chome, Moriya-cho, kanagawa-ku, Yokohama, kanagawa-prefecture, 221-8528, Japan

(No. YA102)

Printed in Japan WPC