JVC hv29jh24 schematic

YA164200410
SERVICE MANUAL
COLOUR TELEVISION
HV-29JH24,
HV-29JH74/G
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1PRECAUTION. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3
2SPECIFIC SERVICE INSTRUCTIONS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-4
3DISASSEMBLY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-6
4ADJUSTMENT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-12
5TROUBLESHOOTING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-30
COPYRIGHT © 2004 Victor Company of Japan, Limited
No.YA164
2004/1ï
SPECIFICATION
ItemsContents
Dimensions (W I H I D)73.1cm I 62.2cm I 49.4cm
Mass44kg
TV RF SystemB, G, I, D, K, K1, M
Colour SystemPAL / SECAM / NTSC 3.58 / NTSC 4.43
Stereo SystemA2 (B/G, D/K), NICAM (B/G, I, D/K)
Teletext SystemFLOF (Fastext), WST (World Standard System)
Receiving Frequency
Intermediate Frequency
Colour Sub Carrier
Power InputAC110V ~ 240V, 50Hz/60Hz
Power ConsumptionAvg.150W
Picture TubeVisible size : 67.6cm, Measured diagonally H: 55.4cm I V: 41.4cm
High Voltage31.0kV (+1kV / -1.5kV) (at zero beam current)
Speaker6.5cm I 13cm, oval type I 2
Audio Power Output10 W + 10 W (Rated power output)
Aerial Input75 unbalanced, coaxial
Video / Audio INPUT-1/2/3/4
Video / Audio Output
Headphone jack3.5 mm stereo mini jack I 1
Remote Control UnitRM-C1351 (UM-3/AA/R6 dry cell battery I 2) [HV-29JH24]
Component Video
625i / 525i / 625p / 525p
VHF Low
VHF High
UHF
CATV
VIF SIF
PAL
SECAM
NTSC
[INPUT-3]
S-Video
[INPUT-1/4]
Video Audio
Video Audio
46.25MHz ~ 168.25MHz
175.25MHz ~ 463.25MHz
471.25MHz ~ 855.25MHz Mid (X ~ Z+2, S1 ~ S10) / Super (S11 ~ S20) / Hyper (S21 ~ S41) bands
38.0MHz (B, G, I, D, K, L)
32.26MHz (5.74MHz: B), 32.15MHz (5.85MHz: G), 31.45MHz (6.55MHz: I)
31.75MHz (6.25MHz: D), 32.15MHz (5.85MHz: K)
4.43MHz
4.40625MHz / 4.25MHz
3.58MHz / 4.43MHz
RCA pin jack I 3
Y : 1V (p-p), Positive (Negative sync provided), 75 Cb/Cr : 0.7V(p-p), 75 Mini-DIN 4 pin connector I 2 Y: 1V (p-p), Positive (Negative sync provided), 75 C: 0.286V (p-p) (Burst signal), 75 1V (p-p), Positive (Negative sync provided), 75 , RCA pin jack I 4 500mV (rms), High impedance, RCA pin jack I 8
1V (p-p), Positive (Negative sync provided), 75 , RCA pin jack I 1 500mV (rms), Low impedance, RCA pin jack I 2
RM-C1350 (UM-3/AA/R6 dry cell battery I 2) [HV-29JH74/G]
Design and specifications subject to change without notice.
1-2 (No.YA164)
SECTION 1
PRECAUTION
1.1SAFETY 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 EARTH : ( ) side GND. Don't short between the LIVE 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 B1 VOLTAGE).
(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.).
Alternate 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 per volt or more sensitivity in the following manner. Connect a 1500 10W resistor paralleled by a 0.15kF 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)
0.15F AC-TYPE
PLACE THIS PROBE
1500 10W
GOOD EARTH GROUND
ON EACH EXPOSED METAL PART
(No.YA164)1-3
SECTION 2
SPECIFIC SERVICE INSTRUCTIONS
2.1FEATURES
DigiPure
This function uses the latest in digital technology to give you a natural-looking picture.
Progressive Scan (525P / 625P signal possible)
This TV can display the Progressive video signal both of 525P (NTSC) and 625P (PAL) signal.
Cinema Surround
The Cinema Surround function gives you a surround sound with a "live" effect.
2.2MAIN DIFFERENCE LIST
ItemHV-29JH24HV-29JH74/G
PIP Function NOYES
REMOTE CONTROL UNITRM-C1351-1HRM-C1350-2H
MAIN P.W.BSML-1512A-H2SML-1513A-H2
POWER & DEF P.W.BSML-2505A-H2
CRT SOKET P.W.BSML-3503A-H2
FRONT CONTROL P.W.BSML-8502A-H2
AV JACK P.W.BSML0J505A-H2SML0J506A-H2
MICON/100HZ P.W.BSML0Z504A-H2SML0Z503A-H2
PICTURE MODE
This function can adjust the picture settings automatically. There are BRIGHT, STANDARD and SOFT in the PICTURE MODE.
RETURN +
This function can set a channel you frequently view to the Return Channel and you can view that channel at any time with one-touch.
1-4 (No.YA164)
2.3TECHNINAL INFORMATION
2.3.1MAIN MI-COM (CPU) PIN FUNCTION
Pin
Pin nameI/OFunction
No.
1TCKINot used65D2I/OData bit for PP-RAM/SD-RAM 2TMSINot used66D12I/OData bit for PP-RAM/SD-RAM 3TDIINot used67D10I/OData bit for PP-RAM/SD-RAM 4TDOONot used68VSS33--GND 5P2.8IRemote control 69VDD33i3.3V 6P2.9IKey scan for front control CH+(On: L)70D4I/OData bit for PP-RAM/SD-RAM 7P2.10IKey scan for front control CH- (On: L)71D3I/OData bit for PP-RAM/SD-RAM 8P2.11IKey scan for front control MENU (On: L)72D11I/OData bit for PP-RAM/SD-RAM
9P2.12IReceive data for TV_LINK73RSTINIReset for main CPU 10P2.13OPower on /off control (ON: L)74P3.0I/OData for inter IC control bus 11P2.14I 12P2.15IMain power detection (Normal: H)76P3.2IRemote control 13VSS33--GND77P3.3OPower indication control (On: L) 14VDD33i3.3V78P3.4OAudio muting (Muting: H) 15P4.5/CS3OOutput data for TV_LINK79P3.5OAudio muting (Muting: H) 16P4.4/A20OAddress bit for PP-RAM/SD-RAM80P3.6ONot used 17P4.3/A19OAddress bit for PP-RAM/SD-RAM81P3.7ONot used 18P4.2/A18OAddress bit for PP-RAM/SD-RAM82P3.8I/ONot used 19P4.1/A17OAddress bit for PP-RAM/SD-RAM83P3.9I/ONot used 20VSS25--GND84VSS33--GND 21VDD25I2.5V85VDD33I3.3V 22P4.0/A16OAddress bit for PP-RAM/SD-RAM86VSS25--GND 23A8OAddress bit for PP-RAM/SD-RAM87VDD25I2.5V 24A7OAddress bit for PP-RAM/SD-RAM88TXD0I/ONot used 25A9OAddress bit for PP-RAM/SD-RAM89RXD0I/ONot used 26A6OAddress bit for PP-RAM/SD-RAM90P3.12ONot used 27A5OAddress bit for PP-RAM/SD-RAM91P3.13ONot used 28A10OAddress bit for PP-RAM/SD-RAM92P3.15ONot used 29A11OAddress bit for PP-RAM/SD-RAM93P5.14IRGB input of EXT-2 active 30A12OAddress bit for PP-RAM/SD-RAM94P5.15IHeadphone connection detection (Connect: H) 31VSS33--GND95TRIG_IN--Not used 32VDD33i3.3V96TRIG_OUT--Not used 33A4OAddress bit for PP-RAM/SD-RAM97P6.2ONotifies bus free state (Stop mode: H) 34A3OAddress bit for PP-RAM/SD-RAM98P6.3OClock for inter IC control bus 35A2OAddress bit for PP-RAM/SD-RAM99P6.4I/OData for inter IC control bus 36A1OAddress bit for PP-RAM/SD-RAM100P6.5OMSP reset (Reset: H) 37A0OAddress bit for PP-RAM/SD-RAM101P6.6--Not used 38A13OAddress bit for PP-RAM/SD-RAM102VSYNCIVertical sync 39A14/RASORow address strobe for SD-RAM access103HSYNCIHorizontal sync 40A15/CASOColumn address strobe for SD-RAM access104COR/RSTOUTOOutput for contrast reduction 41VSS33--GND105BLANK/CORBLAOYs for OSD Teletext (blanking) 42VDD33I3.3V106VDD33I3.3V 43MEMCLKOClock for SD-RAM107VSS33--GND 44CSSDRAMOChip select signal for SD-RAM device108XTAL1ISystem clock (4MHz) 45CLKENOEnable for memory clock109XTAL2OSystem clock (4MHz) 46CSROMOChip select signal for PP-ROM device110VSSA--GND 47RDOExternal memory read strobe for PP-ROM111VDDAI2.5V 48UDQMOWrite disable for high byte112RORed for OSD / Teletext 49LDQMOWrite disable for low byte113GOGreen for OSD / Teletext 50WROMemory write strobe114BOBlue for OSD / Teletext 51D15I/OData bit for PP-RAM/SD-RAM115VSSA--GND 52VSS33--GND116VDDA--2.5V 53VDD33I3.3V117CVBS2IComposite video for WSS 54D7I/OData bit for PP-RAM/SD-RAM118VSSA--GND 55D0I/OData bit for PP-RAM/SD-RAM119VDDAI2.5V 56D14I/OData bit for PP-RAM/SD-RAM120CVBS1BIGround for CVBS1A 57D8I/OData bit for PP-RAM/SD-RAM121CVBS1AIComposite video for Teletext decorder 58D6I/OData bit for PP-RAM/SD-RAM122VSSA--GND 59D1I/OData bit for PP-RAM/SD-RAM123VDDAI2.5V 60VSS33--GND124P5.0IAFT voltage for tuner 61VDD33I3.3V125P5.1--Not used 62D13I/OData bit for PP-RAM/SD-RAM126P5.2IAGC voltage for tuner 63D9I/OData bit for PP-RAM/SD-RAM127P5.3--Not used 64D5I/OData bit for PP-RAM/SD-RAM128TMODEITest mode
X-ray HB LB EW correction Protection detection (Normal: H)
Pin
Pin nameI/OFunction
No.
75P3.1I/OData for inter IC control bus
(No.YA164)1-5
SECTION 3
DISASSEMBLY
3.1DISASSEMBLY PROCEDURE
3.1.1REMOVING THE REAR COVER
(1)Unplug the power cord. (2)Remove the 16 screws [A]. (3)Withdraw the REAR COVER toward you.
3.1.2REMOVING THE AV TERMINAL BOARD
Remove the REAR COVER.
(1)Remove the 5 screws [B]. (2)Withdraw the AV TERMINAL BOARD toward you.
3.1.3REMOVING THE CHASSIS
Remove the REAR COVER.
(1)Slightly raise the both sides of the CHASSIS by hand and
remove the 2 claws under the both sides of the CHASSIS from the front cabinet.
(2)Withdraw the CHASSIS backward.
(If necessary, take off the wire clamp, connectors etc.)
3.1.4REMOVING THE SPEAKER
Remove the REAR COVER.
(1)Remove the 2 screws [C], then remove the SUPPORT
BRACKET. (2)Remove the 4 screws [D], then remove the speaker. (3)Follow the same steps when removing the other
SPEAKER.
3.1.5CHECKING THE PW BOARD
To check the back side of the PW Board.
(1)Pull out the CHASSIS. (Refer to REMOVING THE
CHASSIS). (2)Remove the CONTROL BASE. (3)Front side is turned down and a chassis is stood
perpendicularly. The check by the side of the solder side of
MAIN PWB and POWER&DEF PWB is possible.
CAUTION:
When erecting the CHASSIS, be careful so that there will be
no contacting with other PW Board.
Before turning on power, make sure that the wire connector
is properly connected.
When conducting a check with power supplied, be sure to
confirm that the CRT EARTH WIRE (BRAIDED ASS'Y) is connected to the CRT SOCKET PW board.
3.1.6WIRE 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 sue to tie the wires
with a new cable tie.
1-6 (No.YA164)
ЪОСТМ ЭЯЮЧТЫМ
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РСЙЫО ЭСОЬ
Fig.1
ß
(No.YA164)1-7
3.2MEMORY IC REPLACEMENT
This model uses the memory IC. This memory IC stores data for proper operation of the video and drive circuits. When replacing, be sure to use an IC containing this (initial value) data.
3.2.1MEMORY IC REPLACEMENT PROCEDURE
1. Power off
Switch off the power and disconnect the power plug from the AC outlet.
2. Replace the memory IC
Be sure to use the memory IC written with the initial setting values.
3. Power on
Connect the power plug to the AC outlet and switch on the power.
4. System constant check and setting
* It must not adjust without signal. (1)Press the [DISPLAY] key and the [PICTURE MODE] key of
the REMOTE CONTROL UNIT simultaneously. (2)The SERVICE MODE screen of Fig. 1 will be displayed. (3)While the SERVICE MODE is displayed, press the
[DISPLAY] key and the [PICTURE MODE] key
simultaneously, and the SYSTEM CONSTANT SET
screen of Fig. 2 will be displayed. (4)Check the setting values of the SYSTEM CONSTANT
SET. If the value is different, select the setting item with the
[MENU / ] key, and set the correct value with the
[MENU / ] key. (5)Press the [OK] key to memorize the setting value. (6)Press the [INFORMATION] key twice, and return to the
normal screen.
5. Receiving channel setting
Refer to the OPERATING INSTRUCTIONS and set the receive channels (Channels Preset) as described.
6. User settings
Check the user setting items according to the given in page later. Where these do not agree, refer to the OPERATING INSTRUCTIONS and set the items as described.
ЬЧНРФЯЗ µ»§
7. SERVICE MODE setting
Verify what to set in the SERVICE MODE, and set whatever is necessary (Fig.1). Refer to the SERVICE ADJUSTMENT for setting.
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от КсЭ мт ЬЫЪ кт НМЯМЛН ит НЛООСЛТЬ рт ЮЛН ЪОЫЫ
Fig.1
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Fig.2
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Fig.3
3.2.2SYSTEM CONSTANT SETTING
Setting item
HV-29JH24HV-29JH74/G
Setting value
1. TEXTYESYES
2. PIPNOYES
3. COLOUR AUTONOYES
4. BLUE BACK MUTENONO
5. TUNERMA1MA1
1-8 (No.YA164)
3.2.3SETTINGS OF FACTORY SHIPMENT
3.2.3.1BUTTON OPERATION3.2.3.2REMOTE CONTROL DIRECT OPERATION
Setting itemSetting position
POWEROff
CHANNELPR 1
VOLUME10
TV/VIDEOTV
CHANNELPR1
VOLUME10
ZOOMREGULAR
TV/VIDEOTV
Setting itemSetting position
SLEEP TIMEROFF
DISPLAYIndicated
3.2.3.3REMOTE CONTROL MENU OPERATION
(1) PICTURE SETTING
Setting itemSetting position
PICTURE MODEBRIGHT
CONTRAST / BRIGHT / SHARP
CENTRE
/ COLOUR / HUE
WHITE BALANCEMID
(2) PICTURE FEATURES
Setting itemSetting position
DIGITAL VNR AUTO
DIGIPURE AUTO
PULL DOWN AUTO
COLOUR SYSTEMTVDepend on the preset channel
VIDEOAUTO
ZOOMREGULAR
PICTURE TILTCENTRE
FAVORITE CH CHANNEL
FAVORITE CHANNELCOLOUR
PR01RED
PR02GREEN
(3) SOUND SETTING
Setting itemSetting position
STEREO / I IISTEREO SOUND
BASSCENTRE
TREBLECENTRE
BALANCECENTRE
AI VOLUMEON
CINEMA SURROUNDOFF
(4) FEATURES
Setting itemSetting position
SLEEP TIMEROFF
BLUE BACKON
CHILD LOCKOFF
CAHNNEL GUARDID NO.0000, All CH off
AUTO SHUTOFFOFF
VIDEO-3 SETTINGCOMPONENT
PIP / TWIN [HV-29JH74/G] OFF
SUB INPUT [HV-29JH74/G] VIDEO-1
PIP POSITION [HV-29JH74/G] LOWER LEFT POSITION
PR03YELLOW
PR04BLUE
PICTURE MODEBRIGHT
DIGITAL VNR AUTO
WHITE BALANCEMID
DIGIPURE AUTO
PICTURE EFFECTON
(5) INSTALL
Setting itemSetting position
LANGUAGEENGLISH
AUTO PROGRAMTV channel automatically set
EDIT/MANUALPRESET CH only
TELETEXT LANGUAGEGROUP-1 [HV-29JH74]
GROUP-4 [HV-29JH74/G]
VIDEO SETTING
VIDEO STATUSVIDEO-1, 2, 3, 4
PICTURE MODEBRIGHT
DIGITAL VNR AUTO
WHITE BALANCEMID
DIGIPURE AUTO
PICTURE EFFECTOFF
(No.YA164)1-9
3.2.4SERVICE MODE SETTING ITEMS
Setting itemSetting valueSetting itemSetting value
1. IF1. VCO5. VSM PRESETBRIGHT SOFT STANDARD
2. V / C1. RGB BLK
2. CUTOFF R
3. CUTOFF G
4. CUTOFF B
5. WDR R
6. STATUS [Do not adjust] 1. SOFT
COOL WARM NORMAL
6. WDR G
7. WDR B
7. PIP1. HUE
8. BRIGHT
9. CONT
10. COLOUR
11. HUE
12. SHARP
13. SC ADJ.
14. TOP BLK
15. BTM BLK
16. YUV BRIGHT
17. YUV CONT
18. YUV COLU
19. YUV COLV
20. YUV YDEL
21. YUV UVDEL
22. YCDELM
3. AUDIO1. ERR LIMIT
8. SURROUND1. CH CONFIG
2. A2 ID THR
3. SYSTEM
4. SUB BASS
5. SUB TREBLE
4. DEF1. V-SHIFT
2. V-SIZE
3. H-CENT
4. H-SIZE
5. TRAPEZ
6. EW-PIN
7. COR-UP
8. COR-LO
9. COR-UP-S
10. COR-LO-S
11. ANGLE
12. BOW
13. V-S.CR
14. V-LIN
1. CONT
2. BRIGHT
3. SHARP
4. COLOUR
5. TINT
6. WDR R
7. WDR G
8. WDR B [Do not adjust]
2. EEP MEMORY
2. SC ADJ
3. PIP HORPOS
4. PIP VERPOS
5. YCDELS
2. MATRIX
3. REPRODUCT
4. CENTER MODE
5. SPATIAL EFF
6. VIRTUAL EFF
7. BASS EFFECT
8. HARM
9. HPF
10. LPF
11. AMP LIMIT
12. LEVEL ADJ
13. SWC
14. SW HPF
15. VOLUME
16. HYPER EFF
17. EFFECT MOD
18. HP GAIN
1-10 (No.YA164)
3.3REPLACEMENT OF CHIP COMPONENT
3.3.1CAUTIONS
(1)Avoid heating for more than 3 seconds. (2)Do not rub the electrodes and the resist parts of the pattern. (3)When removing a chip part, melt the solder adequately. (4)Do not reuse a chip part after removing it.
3.3.2SOLDERING 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.
3.3.3REPLACEMENT STEPS
1. How to remove Chip parts
2. How to install 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)Shift with the tweezers and remove the chip part.
[Transistors, diodes, variable resistors, etc.]
(1)Apply extra solder to each lead.
НСФЬЫО
НСФЬЫО
[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.
[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.
NOTE :
After removing the part, remove remaining solder from the pattern.
ß
Þ
Ý
(4)Then solder leads B and C.
ß
Þ
Ý
(No.YA164)1-11
SECTION 4
ADJUSTMENT
4.1ADJUSTMENT 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
warning 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.
4.2PRESET SETTING BEFORE ADJUSTMENT
Unless otherwise specified in the adjustment items, preset the following functions with the REMOTE CONTROL UNIT.
ItemPreset value
PICTURE MODEBRIGHT
CONTRAST / BRIGHT / SHARP / COLOUR / HUECENTRE
WHITE BALANCESTANDARD
DIGITAL VNR AUTO
DIGIPURE AUTO
PULL DOWNAUTO
BASS / TREBLE / BALANCECENTRE
CINEMA SURROUNDOFF
ZOOMREGULAR
PICTURE TILTCENTRE
4.3MEASURING INSTRUMENT AND FIXTURES
(1)DC voltmeter (or digital voltmeter) (2)Oscilloscope (3)Signal generator
(Pattern generator : PAL / SECAM / NTSC)
(4)Remote control unit
4.4ADJUSTMENT ITEMS
CHECK ITEMS
B1 POWER SUPPLY check HIGH VOLTAGE check IF VCO check
FOCUS
FOCUS adjustment
DEFLECTION CIRCUIT
V. POSITION adjustment V. SIZE adjustment H. POSITION adjustment H. SIZE adjustment SIDE-PIN adjustment TRAPEZIUM adjustment UPPER / LOWER CORNER PIN adjustment PARALLEL(TILT) adjustment BOW adjustment V. S-SHAPE CORRECTION & LINEARITY adjustment
VIDEO CIRCUIT
WHITE BALANCE adjustment SUB BRIGHT adjustment SUB CONTRAST adjustment SUB COLOUR adjustment SUB HUE adjustment COLOUR DECODER VCO adjustment
VSM PRESET SETTING
VSM PRESET
PIP SETTING
PIP POSITION adjustment
1-12 (No.YA164)
4.5ADJUSTMENT LOCATION
НРЫЯХЫО шФсОч
Óß×Ò ÐÉÞ
ЭТрЦп
ЭТрНР
ЭТррЯ
ЭТррЮ
Þ
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ЪОСТМ ЭСТМОСФ РЙЮ шМСРч
ЭТрЦо
ЭТрРЙ
РСЙЫО ЭСОЬ
НиркНирлНирмНирнНироНирп
ЭТррЪ
ÎÌ
ß
УЫУСОЗ ЧЭ
ЧЭйрп
ЪОСТМ ЭСТМОСФ РЙЮ шЮСММСУч
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Öèðê
ЦирлЦирм
É
ЭТррн
ЭТрЭо
Öèðí
ЪОСТМ
Öèðï
ЭТрЭп
Úçðï
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ЪОСТМ
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ßÊ ÍÉ ÐÉÞ
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шКОпч
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шКОоч
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ЭОМ НСЭХЫМ РЙЮ
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È
ï
ë
п°·²ж ЮпшМРузпч о°·²ж ТЭ н°·²ж ИуОЯЗ м°·²ж ИуОЯЗ л°·²ж ЩТЬш ч
шНСФЬЫО НЧЬЫч
МРумйЮ
ЭТррЩ
Ø
Ê
ЪСЭЛН о КО ЪСЭЛН п КО НЭОЫЫТ КО
РЭ УЯЩТЫМ
ÌÐóÇ
(No.YA164)1-13
4.6BASIC OPERATION OF SERVICE MODE
4.6.1TOOL OF SERVICE MODE OPERATION
Operate the SERVICE MODE with the REMOTE CONTROL UNIT.
4.6.2SERVICE MODE ITEMS
With the SERVICE MODE, various adjustments can be made, and they are broadly classified in the following items of settings.
1.IFThis mode adjusts the setting values of the IF circuit.
2. V/CThis mode adjusts the setting values of the VIDEO circuit.
3.AUDIOThis mode adjusts the setting values of the multiplicity AUDIO circuit.
4. DEFThis mode adjusts the setting values of the DEFLECTION circuit for each aspect mode given below.
5.VSM PRESETThis mode adjusts the initial setting values of BRIGHT, STANDARD and SOFT. (VSM : Video Status Memory)
6.STATUSIt is no requirement to adjustment. [Do not adjust]
7.PIPThis mode adjusts the setting values of the PIP circuit. [HV-29JH74/G only]
8.SURROUNDThis mode adjusts the setting values of the SURROUND circuit.
9.SHIPPINGThis mode is set at shipping setting. [Do no adjust]
0.BUS FREEIt is not requirement to adjustment. [Do no adjust]
4.6.3BASIC OPERATION IN SERVICE MODE
4.6.3.1HOW TO ENTER THE SERVICE MODE
(1)Press the [DISPLAY] key and the [PICTURE MODE] key
simultaneously, then enter the SERVICE MODE.
(2)When the main menu is displayed, press any key of the [0]
to [9] key to enter the corresponding sub menu mode.
4.6.3.2SETTING METHOD
1.IF
[1. VCO] : It must not adjust without signal
(1)[1] key
Select 1.IF.
(2)[1] key
НЫОКЧЭЫ УЫТЛ
пт ЧЪ нт ЯЛЬЧС лт КНУ РОЫНЫМ йт РЧР зт НШЧРРЧТЩшСЪЪч
пуз ж НЫФЫЭМЬЧНР ж ЫИЧМ
от КсЭ мт ЬЫЪ кт НМЯМЛН ит НЛООСЛТЬ рт ЮЛН ЪОЫЫ
Select 1.VCO(CW). Check the arrow position between the ABOVE REF. and BELOW REF.
(3)[DISPLAY] key
Return to the SERVICE MODE main manu screen.
2. V/C, 4. DEF
(1)[2], [4] key
Select one from 2. V/C, 4. DEF.
Fig.1
НЫОКЧЭЫ УЫТЛ
(2)[MENU / ] key
Select setting items.
(3)[MENU / ] key
Set the setting values of the setting items.
5.VSM PRESET
(1)[5]key
Select 5.VSM PRESET.
(2)[OK] key
Select setting items.
(3)[MENU / ] key
Set the setting values of the setting items.
4.6.3.3MEMORIZE THE ADJUSTMENT DATA
When adjustment is completed, press the [OK] key to memorize the adjustment value. If not to do it, adjustment data is not
ЬЧНРФЯЗ µ»§
РЧЭМЛОЫ УСЬЫ µ»§
ЖССУ шЯНРЫЭМч µ»§
ÓÛÒË µ»§ ø ñ ú ñ ÷
ÑÕ µ»§
Ò«³¾»®- µ»§-
memorized to the memory IC. And if exit the adjustment mode before memorize the data, the adjustment value which you change is canceled.
1-14 (No.YA164)
Fig.2
ЕОУуЭпнлрГ
4.6.3.4RELEASE OF SERVICE MODE
After completing the setting, return to the SERVICE MODE, then again press the [DISPLAY] key.
4.6.4SERVICE MODE FLOW CHART
УЯЧТ УЫТЛ НЭОЫЫТ
НЫОКЧЭЫ УЫТЛ
пт ЧЪ нт ЯЛЬЧС лт КНУ РОЫНЫМ йт РЧР зт НШЧРРЧТЩ шСЪЪч
пуз ж НЫФЫЭМЬЧНР ж ЫИЧМ
от КсЭ мт ЬЫЪ кт НМЯМЛН ит НЛООСЛТЬ рт ЮЛН ЪОЫЫ
ЭСФСЛО МЫУР
ÝÑÑÔ
ÉßÎÓ
ТСОУЯФ
пт ШЛЫ от НЭЯЬЦ нт РЧР ШСОРСН мт РЧР КЫОРСН лтЗЭЬЫФН
пт ЭШ ЭСТЪЧЩ от УЯМОЧИ нт ОЫРОСЬЛЭМ мт ЭЫТМЫО УСЬЫ лт НРЯМЧЯФ ЫЪЪ кт КЧОМЛЯФ ЫЪЪ йт ЮЯНН ЫЪЪЫЭМ ит ШЯОУ зт ШРЪ прт ФРЪ ппт ЯУР ФЧУЧМ пот ФЫКЫФ ЯЬЦ пнт НЙЭ пмт НЙ ШРЪ плт КСФЛУЫ пкт ШЗРЫО ЫЪЪ пйт ЫЪЪЫЭМ УСЬ пит ШР ЩЯЧТ
РЧЭМЛОЫ УСЬЫ
ЮОЧЩШМ
ÍÑÚÌ
НМЯТЬЯОЬ
пт ЭСТМ от ЮОЧЩШМ нт НШЯОР мт ЭСФСЛО лт МЧТМ кт ЙЬО О йт ЙЬО Щ ит ЙЬО Ю
лт КНУ РОЫНЫМ
КНУ РОЫНЫМ НМЬ
ïò ÝÑÒÌ
ÑÕ
Ü×ÍÐ æ ÛÈ×Ìусх ж НМСОЫ
кт НМЯМЛН ЕЬ± ²±¬ ¿¼¶«-¬Г
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ïò ÍÑÚÌ
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от ЫЫР УЫУСОЗ
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Ü×ÍÐ æ ÛÈ×Ìусх ж НЫФЫМЫ
éò Ð×Ð Åܱ ²±¬ ¿¼¶«-¬Ã ЕШКуозЦШймсЩГ
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Ü×ÍÐ æ ÛÈ×Ìусх ж НМСОЫ
ит НЛООСЛТЬ ЕЬ± ²±¬ ¿¼¶«-¬Г
НЛООСЛТЬ НжФСЙ
пт ЭШ ЭСТЪЧЩ
ÑÕ
Ü×ÍÐ æ ÛÈ×Ìусх ж НМСОЫ
Fig.3
ïò ×Ú øÝÉ÷
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Ü×ÍÐ æ ÛÈ×Ìп ж НЫФЫЭМ
КЭСшЭЙч ô Óئ
МСС ШЧЩШ ЯЮСКЫ ОЫЪ ЦЛНМ ОЫЪ ЮЫФСЙ ОЫЪ МСС ФСЙ
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Ü×ÍÐ æ ÛÈ×Ìусх ж НМСОЫ
пт ОЩЮ ЮФХ от ЭЛМСЪЪ О нт ЭЛМСЪЪ Щ мт ЭЛМСЪЪ Ю лт ЙЬО О кт ЙЬО Щ йт ЙЬО Ю ит ЮОЧЩШМ зт ЭСТМОЯНМ прт ЭСФСЛО ппт ШЛЫ
пт ЫОО ФЧУЧМ от Яо ЧЬ МШО нт НЗНМЫУ мт НЛЮ ЮЯНН лт НЛЮ МОЫЮФЫ
пт КуНШЧЪМ от КуНЧЖЫ нт ШуЭЫТМ мт ШуНЧЖЫ лт МОЯРЫЖ кт ЫЙуРЧТ йт ЭСОуЛР
пот НШЯОР пнт НЭ ЯЬЦт пмт МСР ЮФХ плт ЮМУ ЮФХ пкт ЗЛК ЮОЧЩШМ пйт ЗЛК ЭСТМ пит ЗЛК ЭСФЛ пзт ЗЛК ЭСФК орт ЗЛК ЗЬЫФ опт ЗЛК ЛКЬЫФ оот ЗЭЬЫФУ
ит ЭСОуФС зт ЭСОуЛРуН прт ЭСОуФСуН ппт ЯТЩФЫ пот ЮСЙ пнт КуНтЭО пмт КуФЧТ
(No.YA164)1-15
4.7INITIAL SETTING VALUE OF SERVICE MODE
(1)Adjustment of the SERVICE MODE is made on the basis of the initial setting values:however, the new setting values which set
the screen in its optimum condition may differ from the initial setting value. (2)Do not change the initial setting values of the setting items not listed in "ADJUSTMENT PROCEDURE". (3)" --- " is impossible to adjustment.
[2. V/C] * is variable values for adjustment.
Setting value
Setting item
Variable
range
RF / Composite Video / S-VideoComponent videoProgressive
PALSECAM
NTSC 3.58NTSC 4.43
50Hz-i60Hz-i50Hz-p60Hz-p
1. RGB BLK---------------------------
2. CUTOFF R0 to 255150*150*150*150*5 5 0 0
3. CUTOFF G0 to 255150*150*150*150*-8 -8 0 0
4. CUTOFF B 0 to 255150 150 150 150 0 0 0 0
5. WDR R0 to 255150*150*150*150*0 0 0 0
6. WDR G0 to 255150*150*150*150*0 0 0 0
7. WDR B 0 to 255150 150 150 150 0 0 0 0
8. BRIGHTRF-128 to 127-25*-25*-25*-25*------------
VIDEO-128 to 127+6 +6 +6 +6 +2 +2 -4 -4
9. CONTRASTRF0 to 6350*50*50*50*------------
VIDEO0 to 63+15 +15 +15 +15 ------------
10. COLOURRF0 to 6336*55*25* 5------------
VIDEO0 to 63-7 -3 -3 0 -14 -5 -10+5
11. HUERF-64 to 63------40 ------------
VIDEO-64 to 63------0 0 ------------
12. SHARP RF-15 to 15-3-3-3-3------------
VIDEO-15 to 150 0 0 0 0 0 0 0
13. SC ADJ0 to 6318*18*18*18*------------
14. TOP BLK 0 to 25535 35 46 46 35 46 51 46
15. BTM BLK -127 to 511-15 -15 -37 -37 -15 -37 -50 -37
16. YUV BRIGHT-64 to 63-------------4-4-4-4
17. YUV CONT0 to 63------------55555555
18. YUV COLU0 to 63------------57 60 0 -10
19. YUV COLV0 to 63------------60 55 0 0
20. YUV YDEL0 to 127------------50 50 30 35
21. YUV UVDEL0 to 127------------49 49 30 35
22. TCDELM RF0 to 1272 0 0 0 ------------
VIDEO0 to 1270 0 0 0 ------------
S-VIDEO
0 to 1271 0 1 1------------
Setting value
Setting item
Variable
range
RF/ Composite Video / S-VideoComponent videoProgressive
PALSECAM
NTSC 3.58NTSC 4.43
Compress (16:9)
50Hz-i60Hz-i50Hz-p60Hz-p
8. BRIGHTRF-128 to 1270 0 0 0 0 0 0 0
VIDEO-128 to 1270 0 0 0 0 0 0 0
9. CONTRASTRF0 to 63-7 -7 -7 -7 ------------
VIDEO0 to 63-7 -7 -7 -7 ------------
10. COLOURRF0 to 630 0 0 0 ------------
VIDEO0 to 630 0 0 0 0 0 0 0
1-16 (No.YA164)
[3. AUDIO]
Setting item
1. ERR LIMIT
2. A2 ID THR
3. SYSTEM
4. SUB BASS
5. SUB TREBLE
Variable
range
0000 to 00FF
0000 to 00FF
---
-003 to 0003
-003 to 0003
Setting value
0010
0019
---
0001
0001
[4. DEFLECTION]
Setting value
Setting item
Variable
range
100Hz-i
REGULARZOOM16 : 9
60Hz-p
120Hz-i
50Hz-p
100Hz-i
60Hz-p
120Hz-i
50Hz-p
100Hz-i
60Hz-p
120Hz-i
50Hz-p
1. V-SHIFT-32 to +311-23-200000000
2. V-SIZE-64 to +63-7-1-100000-2700-9
3. H-CENT-128 to +127-16-10-3-20000000
4. H-SIZE-128 to +1278-20-200000000
5. TRAPEZ-63 to +64-40000000200-2
6. EW-PIN-128 to +127-1800000000005
7. COR-UP-64 to +6420000000201-8
8. COR-LO-64 to +64300000002000
9. COR-UP-S-64 to +64100000002002
10. COR-LO-S-64 to +64100000002000
11. ANGLE-128 to +127200000000000
12. BOW-128 to +127100000000000
13. V-S.CR-64 to +631800000000000
14. V-LIN-64 to +63-200-200000000
[5. VSM PRESET]
Setting item
Variable
range
BRIGHTSOFTSTANDARDCOOLWARMNORMAL
Setting value
1. CONT-16 to 1616-20---------
2. BRIGHT-16 to 16-2-20---------
3. SHARP-16 to 160-100---------
4. COLOUR-16 to 160-20---------
5. TINT-16 to 16000---------
6. WDR R-16 to 16----------12220
7. WDR G-16 to 16----------1120
8. WDR B-16 to 16---------000
(No.YA164)1-17
[7. PIP] [HV-29JH74/G]
Setting item
1. HUERF
VIDEO
2. SC ADJ
Setting item
(Position display)
3. PIP HOR POS
4. PIP VER POS
Setting item
5. YCDELSRF-016 to 0015-1 -1 -1 -1 ------------
VIDEO-016 to 0015-1 -1 -1 -1 ------------
S-VIDEO-016 to 0015-1 -1 -1 -1 ------------
Variable
range
-128 to 0126
-128 to 0126
0000 to 0063
Variable
range
0000 to 2047
0000 to 1023
Variable
range
RF / Composite Video / S-VideoComponent videoProgressive
PALSECAM
------+4-1 ------------
-------1 -1 ------------
1717171717171717
PAL / SECAM / Component 50Hz-i
Upper leftLower rightUpper leftLower right
222585217585
4719832159
RF / Composite Video / S-VideoComponent videoProgressive
PALSECAM
NTSC 3.58NTSC 4.43
PIP positionPIP position
NTSC 3.58NTSC 4.43
Initial setting value
50Hz-i60Hz-i50Hz-p60Hz-p
Initial setting value
NTSC3.58 / NTSC4.43 /
Component 50Hz-p / 60Hz-i / 60Hz-p
Initial setting value
Regular
50Hz-i60Hz-i60Hz-p60Hz-p
[8. SURROND]
Setting item
1. CH CONFIG
2. MATRIX
3. REPRODUCT
4. CENTER MODE
5. SPATIAL EFF
6. VIRTUAL EFF
7. BASS EFFECT
8. HARM
9. HPF
10. LPF
11. AMP LIMIT
12. LEVEL ADJ
13. SWC
14. SW HPF
15. VOLUME
16. HYPER EFF
17. EFFECT MOD
18. HP GAIN
Variable
range
0000 to 0001
0000 to 0127
0000 to 0015
0000 to 0015
0000 to 0127
0000 to 0127
0000 to 0127
0000 to 0127
0002 to 0030
0005 to 0030
-032 to 0000
-128 to 0012
0005 to 0040
0000 to 0002
0000 to 0003
0000 to 0127
0000 to 0002
0000 to 0008
Initial setting value
LOWHIGH
11
1616
66
33
4050
3547
4652
00
88
1815
-10-15
00
2828
22
33
6363
00
88
1-18 (No.YA164)
4.8ADJUSTMENT PROCEDURE
4.8.1CHECK ITEM
Item
B1 VOLTAGE DC voltmeter
Measuring
instrument
X connector
1-pin:TP-E Remote control unit
5-pin:TP-91
[POWER DEF
PWB]
HIGH VOLTAGE HV voltmeter
Remote
CRT anode
Chassis GND control unit
IF VCO Remote
control unit
ЧЪ НЫОКЧЭЫ УЫТЛ
ïò ÊÝÑ
Test pointAdjustment partDescription
[2. V/C]
1. RGB BLK
(1)Receive a any broadcast. (2)Select 2. V/C from the SERVICE MODE. (3)Select < 1.RGB BLK >. (4)Press the [[MENU / ] key to find the cut off
screen (Black screen). (5)Connect a DC voltmeter to TP-91(B1) and TP-E. (6)Make sure that the voltage is DC139.9 ±2.0V.
[2. V/C]
1. RGB BLK
(1)Receive a any broadcast. (2)Select 2. V/C from the SERVICE MODE. (3)Select < 1. RGB BLK >. (4)Press the [MENU / ] key to find the cut off screen
(Black screen). (5)Connect a HV voltmeter to CRT anode and chassis
GND. (6)Make sure that the voltage is DC31.5kV(+1kV, -1.5kV).
NOTE:
Remove the probe before removing the earth clip.
[1.IF]
1.VCO
Under normal conditions, no adjustment is required. Confirmation adjustment.
(1)Select 1.IF from the SERVICE MODE.
КЭСшЭЙчфУШ¦
МСС ШЧЩШ ЯЮСКЫ ОЫЪ ЦЛНМ ОЫЪ ЮЫФСЙ ОЫЪ МСС ФСЙ
(2)Select < 1.VCO > (3)Receive a any broadcast. (4)Check the (Arrow) posspition between the ABOVE
REF. and BELLOW REF.
Ü×ÍÐ æ ÛÈ×Ìп ж НЫФЫЭМ
4.8.2FOCUS
Item
Measuring
instrument
FOCUS Signal
generator
ØÊÌ
Ü×ÍÐ æ ÛÈ×Ì
Test pointAdjustment partDescription
FOCUS1 VR FOCUS2 VR [In HVT]
(1)Receive the cross hatch signal. (2)Set the ZOOM mode to REGULAR. (3)While looking at the screen, adjust the FOCUS VR
to the vertical and horizontal lines will be clear and
infine detail. (4)Make sure that the picture is in focus even when the
screen gets darkened.
ЪСЭЛН
НЭОЫЫТ
(No.YA164)1-19
4.8.3DEFLECTION CIRCUIT
There are 3 aspect modes ( 1. REGULAR, 2. ZOOM, 3. 16 : 9) of the adjustment. Depending upon the kind of signals ( Vertical frequency 120Hz-i / 100Hz-i / 60Hz-p). 120Hz-i is a signal that is output to a screen when a 60Hz signal is input to a television set. It is an interlace-scanned picture of 120Hz. 100Hz-i is a signal that is output to a screen when a 50Hz signal is input to a television set. It is an interlace-scanned picture of 100Hz.
When the 100Hz mode has been established, the setting of other modes will be done automatically. However, if the picture quality
has not been optimized, adjust each mode again, respectively.
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. To switch aspect modes, use the [ZOOM] key of the remote controller.
NOTE :
At first the adjustment in 100Hz mode should be done, then the data for the other aspect mode is corrected in the respective value at the same time. And confirm the deflection adjustment initial setting value in 60Hz (NTSC EXT mode) mode. If the adjustment in 100Hz each aspect mode has been done and stored, the data for the same aspect modes in 60Hz is corrected in the respective value. Only the data for the other aspect mode in 60Hz is corrected for itself.
Item
V. POSITION Signal
Measuring
instrument
generator
Remote control unit
Test pointAdjustment partDescription
[4. DEF]
1. V-SHIFT
14. V-LIN
(1)Receive a circle pattern signal of vertical frequency
50Hz (PAL). (2)Set the ZOOM mode to REGULAR. (3)Select 4. DEF from the SERVICE MODE. (4)Select < 1.V-SHIFT >. (5)Adjust to become A = B.
øß÷
(6)Check the adjustment value above in other zoom
mode. If it is a wrong adjustment, re-adjust in ZOOM
mode and adjust by < 1. V-SHIFT >, < 14.V-LIN >. (7)Press the [OK] key to memorize the set values.
V. SIZE Signal
generator
Remote control unit
ͽ®»»²
-·¦»
çíû
øÞ÷
[4. DEF]
2.V-SIZE
з½¬«®»
ïððû
-·¦»
(1)Receive the PAL cross hatch signal. (2)Set the ZOOM mode to REGULAR. (3)Select 4. DEF from the SERVICE MODE. (4)Select < 2.V-SIZE >. (5)Set the initial setting value of < 2.V-SIZE >. (6)Adjust to make sure that the vertical screen size of
the picture size is 93%. (7)Press the [OK] key to memorize the set values. (8)Input the NTSC VIDEO signal (60Hz) from the EXT
terminal, and make sure that the vertical screen size
is 93%. (9)Press the [OK] key to memorize the set values.
1-20 (No.YA164)
Item
Measuring
instrument
H. POSITION Signal
generator
Remote control unit
шЯчшЮч
Test pointAdjustment partDescription
[4. DEF]
3.H-CENT.
(1)Receive the PAL circle pattern signal. (2)Set the ZOOM mode to REGULAR. (3)Select 4. DEF from the SERVICE MODE. (4)Select < 3.H-CENT. >. (5)Set the initial setting value of < 3.H-CENT. >. (6)Adjust to became A=B. (7)Press the [OK] key to memorize the set values.
H. SIZE Signal
generator
Remote control unit
SIDE-PIN Signal
generator
Remote control unit
ͽ®»»² -·¦» çîû
з½¬«®» -·¦» ïððû
[4. DEF]
4.H-SIZE
[4. DEF]
6.EW-PIN
(1)Receive the PAL cross hatch signal. (2)Set the ZOOM mode to REGULAR. (3)Select 4. DEF from the SERVICE MODE. (4)Select < 4.H-SIZE >. (5)Set the initial setting value of < 4.H-SIZE >. (6)Adjust to make sure that the horizontal screen size
of the picture size is 92%. (7)Press the [OK] key to memorize the set value. (8)Input the NTSC VIDEO signal (60Hz) from the EXT
terminal, and make sure that the horizontal screen
size is 92%. (9)Press the [OK] key to memorize the set values.
(1)Receive the PAL cross hatch signal. (2)Set the ZOOM mode to REGULAR. (3)Select 4. DEF from the SERVICE MODE. (4)Select < 6.EW-PIN >. (5)Set the initial setting value of < 6.EW-PIN >. (6)Adjust to make the vertical lines at the right and left
edges of the screen become straight. (7)Press the [OK] key to memorize the set values.
ͬ®¿·¹¸¬
(No.YA164)1-21
Item
Measuring
instrument
TRAPEZIUM Signal
generator
Remote control unit
Test pointAdjustment partDescription
[4. DEF]
5.TRAPEZ
(1)Receive the PAL cross hatch signal. (2)Set the ZOOM mode to REGULAR. (3)Select 4. DEF from the SERVICE MODE. (4)Select < 5.TRAPEZ >. (5)Set the initial setting value of < 5.TRAPEZ >. (6)Adjust to bring the vertical lines at the right and left
edges of the screen became parallel.
(7)Press the [OK] key to memorize the set values.
п®¿´´»´
UPPER/LOWER CORNER PIN
PARALLEL (TILT)
Signal generator
Remote control unit
Signal generator
Remote control unit
ͬ®¿·¹¸¬
ͬ®¿·¹¸¬
[4. DEF]
7.COR-UP
8.COR-LO
9.COR-UP-S
10.COR-LO-S
[4. DEF]
11.ANGLE
(1)Receive the PAL cross hatch signal. (2)Set the ZOOM mode to REGULAR. (3)Select 4. DEF from the SERVICE MODE. (4)Select < 8. COR-LO >. (5)Set the initial setting value of < 8. COR-LO >. (6)Adjust to bring the straight line at the lower corner. (7)Select < 7. COR-UP >. (8)Set the initial setting value of < 7. COR-UP >. (9)Adjust to bring the straight line at the upper corner.
(10)Adjust < 8. COR-LO > and < 7. COR-UP > so that
the vertical lines at the four corners on the screen are straight.
(11)If the extreme upper & lower corners are little pin or
barrel, chose < 9. COR-UP-S >, < 10. COR-LO-S > and adjust to get straight.
(12)Press the [OK] key to memorize the set values.
(1)Receive the PAL cross hatch signal. (2)Set the ZOOM mode to REGULAR. (3)Select 4. DEF from the SERVICE MODE. (4)Select < 11. ANGLE >. (5)Adjust to bring the vertical lines straight. (6)Press the [OK] key to memorize the set values.
1-22 (No.YA164)
Bring the vertical lines straight.
Item
Measuring
instrument
BOW Signal
generator
Remote control unit
Test pointAdjustment partDescription
[4. DEF]
12. BOW
(1)Receive the PAL cross hatch signal. (2)Set the ZOOM mode to REGULAR. (3)Select 4. DEF from the SERVICE MODE. (4)Select < 12.BOW >. (5)Adjust to bring the vertical lines straight. (6)Press the [OK] key to memorize the set values.
Bring the vertical lines straight.
V. S-SHAPE CORRECTION & LINEARITY
Signal generator
Remote control unit
[4. DEF]
13. V-S. CR
14. V-LIN
ÌÑÐ
ÌÑÐ
ЮСММСУ
When the vertical linearity has been deteriorated
remarkably, perform the following steps.
(1)Receive the PAL cross hatch signal. (2)Set the ZOOM mode to REGULAR. (3)Select 4. DEF from the SERVICE MODE. (4)Select < 14. V-LIN >. (5)Set the initial setting value of < 14. V-LIN >. (6)Select < 13. V-S.CR >. (7)Set the initial setting value of < 13. V-S.CR >. (8)Adjust < 14. V-LIN > and < 13. V-S.CR > so that the
spaces of each line on TOP, CENTER and
BOTTOM become uniform. (9)Press the [OK] key to memorize the set values.
(No.YA164)1-23
4.8.4VIDEO CIRCUIT
Item
WHITE BALANCE
Measuring
instrument
Signal generator
Remote control unit
SUB BRIGHT Remote
control unit
SUB CONTRAST Remote
control unit
Test pointAdjustment partDescription
[2. V/C]
2.CUTOFF R
3.CUTOFF G
4.CUTOFF B
5.WDR R
6.WDR G
(1)Receive a black and white signal (colour off). (2)Set the ZOOM mode to REGULAR. (3)Set the PICTURE MODE to STANDARD. (4)Set the WHITE BALANCE to MID. (5)Select 2. V/C from the SERVICE MODE. (6)Select < 2.CUTOFF R >, < 3.CUTOFF G > and
< 4.CUTOFF B >.
(7)Adjust the screen until the black portion in the screen
becomes black.(Low light) (8)Select < 5.WDR R > and < 6.WDR G >. (9)Adjust the screen until the white portion in the screen
becomes white (High light).
(10)Press the [OK] key to memorize the set values. (11)Change the contrast and brightness with the remote
control up & down from low-light to high-light and check that the tracking of the white balance is good.
[2. V/C]
8. BRIGHT
(1)Receive any broadcast. (2)Set the ZOOM mode to REGULAR. (3)Set the PICTURE MODE to STANDARD. (4)Set the WHITE BALANCE to MID. (5)Select 2. V/C from the SERVICE MODE. (6)Select < 8. BRIGHT >. (7)Set the initial setting value of < 8.BRIGHT >. (8)If the brightness is not the best with the initial setting
value, make fine adjustment until you get the best brightness.
(9)Press the [OK] key to memorize the set values.
[2. V/C]
9. CONTRAST
(1)Receive any broadcast. (2)Set the ZOOM mode to REGULAR. (3)Set the PICTURE MODE to STANDARD. (4)Set the WHITE BALANCE to MID. (5)Select 2. V/C from the SERVICE MODE. (6)Select < 9.CONTRAST >. (7)Set the initial setting value of < 9.CONTRAST >. (8)If the contrast is not the best with the initial setting
value, make fine adjustment until you get the best contrast.
(9)Press the [OK] key to memorize the set values.
1-24 (No.YA164)
Item
Measuring
instrument
SUB COLOUR Signal
generator
Remote control unit
Signal generator
Oscilloscope
Remote control unit
É Ý
Test pointAdjustment partDescription
TP-47B TP-E
[CRT SOCKET PWB]
ÇÙÎ
Þ
Ó
[2. V/C]
10.COLOUR
[2. V/C]
10.COLOUR
øó÷
øß÷
ð
øõ÷
[Method of adjustment without measuring instrument]
PAL COLOUR
(1)Receive the PAL broadcast. (2)Set the ZOOM mode to REGULAR. (3)Set the PICTURE MODE to STANDARD. (4)Set the WHITE BALANCE to MID. (5)Select 2. V/C from the SERVICE MODE. (6)Select < 10.COLOUR >. (7)Set the initial setting value of < 10.COLOUR >. (8)If the colour is not the best with the initial set value,
make fine adjustment until you get the best colour.
(9)Press the [OK] key to memorize the set values.
SECAM COLOUR :
(1)Receive the SECAM broadcast. (2)Follow the same step 2 to 9 as in PAL COLOUR.
NTSC 3.58 COLOUR :
(1)Receive the NTSC broadcast. (2)Follow the same step 2 to 9 as in PAL COLOUR.
NTSC 4.43 COLOUR :
When NTSC 3.58 COLOUR set, NTSC 4.43
COLOUR will automatically set.
[Method of adjustment using measuring instrument]
PAL COLOUR
(1)Receive the PAL full field colour bar signal (75%
white). (2)Connect the oscilloscope between TP-47B and TP-E. (3)Set the ZOOM mode to REGULAR. (4)Set the PICTURE MODE to STANDARD. (5)Set the WHITE BALANCE to MID. (6)Select 2. V/C from the SERVICE MODE. (7)Select < 10.COLOUR >. (8)Set the initial setting value of < 10.COLOUR >. (9)Adjust the value of (A) to the value in the voltage
table in the left.
(10)Press the [OK] key to memorize the set values.
SECAM COLOUR
(1)Receive the SECAM colour bar signal (75% white). (2)Follow the same step 2 to 10 as in PAL COLOUR.
КСФМЯЩЫ шЙуЮч
ʱ´¬¿¹» -»¬¬·²¹
РЯФНЫЭЯУТМНЭ
ʱ´¬¿¹» ¬¿¾´»
NTSC 3.58 COLOUR
(1)Input the NTSC 3.58MHz full field colour bar signal
(75% white). (2)Follow the same step 2 to 10 as in PAL COLOUR.
NTSC 4.43 COLOUR
When NTSC 3.58 COLOUR set, NTSC 4.43
COLOUR will automatically set.
(No.YA164)1-25
Item
Measuring
instrument
SUB HUE Signal
generator
Remote control unit
Signal generator
Oscilloscope
Remote control unit
É Ý
Test pointAdjustment partDescription
TP-47B TP-E
[CRT SOCKET PWB]
ÇÙÎ
Ó
Þ
[2. V/C]
11.HUE
[2. V/C]
11.HUE
øó÷
øÞ÷
ð
øõ÷
[Method of adjustment without measuring instrument]
NTSC 3.58 HUE
(1)Input the NTSC 3.58MHz full field colour bar signal
(75% white). (2)Set the ZOOM mode to REGULAR. (3)Set the PICTURE MODE to STANDARD. (4)Set the WHITE BALANCE to MID. (5)Select 2. V/C from the SERVICE MODE. (6)Select < 11.HUE >. (7)Set the initial setting value of < 11.HUE >. (8)If you cannot get the best HUE with the initial setting
value, make fine adjustment until you get the best
HUE. (9)Press the [OK] key to memorize the set values.
NTSC 4.43 HUE
When NTSC 3.58 COLOUR set, NTSC 4.43
COLOUR will automatically set.
[Method of adjustment using measuring instrument]
NTSC 3.58 HUE
(1)Input the NTSC 3.58MHz full field colour bar signal
(75% white). (2)Set the ZOOM mode to REGULAR. (3)Set the PICTURE MODE to STANDARD. (4)Set the WHITE BALANCE to MID. (5)Select 2. V/C from the SERVICE MODE. (6)Select < 11.HUE >. (7)Set the initial setting value of < 11.HUE >. (8)Connect the oscilloscope between TP-47B and TP-E. (9)Adjust NTSC 3.58 HUE and bring the value of (B) in
the illustration to -13V.
(10)Press the [OK] key to memorize the set values.
NTSC 4.43 HUE
When NTSC 3.58 COLOUR set, NTSC 4.43
COLOUR will automatically set.
COLOUR DECODER VCO
ÊñÝ ÐßÔ
ïíò ÍÝ ßÜÖò
ÑÕ
НЭ ЬЫКЪЛФФ
1-26 (No.YA164)
Signal generator
Remote control unit
Ü×ÍÐ æ ÛÈ×Ìусх ж НМСОЫ
Ù»¬ ·² ðððð ðððí
[2. V/C]
13.SC ADJ
É·¬¸·² ðððé¢ððîì ¿¼¶«-¬³»²¬ò
(1)Receive the PAL full field colour bar signal (75%
white). (2)Set the ZOOM mode to REGULAR. (3)Set the PICTURE MODE to STANDARD. (4)Set the WHITE BALANCE to MID. (5)Select 2. V/C from the SERVICE MODE. (6)Select < 13. SC ADJ >. (7)Adjust the value "SC DEV" indicated below of screen
get in 0000±0003. "SC DEV" should be adjusted
within 0007 to 0024. (8)Press the [OK] key to memorize the set values.
Note :
When the [OK] key is pressed, VCO for colour decoder will be automatically set at the respective values.
4.8.5VSM PRESET SETTING
Item
Measuring
instrument
VSM PRESET Remote
control unit
ïò ÝÑÒÌ ïêð
от ЮОЧЩШМ óîð
нт НШЯОР ðð
мт ЭСФСЛО ðð
ëò Ì×ÒÌ ð
Test pointAdjustment partDescription
[5.VSM PRESET]
1.CONT.
2.BRIGHT
3.SHARP
4.COLOUR
5.TINT
6.WDR R
7.WDR G
8.WDR B
(1)Select 5.VSM PRESET from the SERVICE MODE. (2)Select the BRIGHT with the [OK] key. (3)Adjust the [MENU / ] key to bring the set values
of < 1.CONT > - < 5.TINT > to the values shown in
the table. (4)Press the [OK] key to memorize the set values. (5)Select the STANDARD with the [OK] key. (6)Repeat the steps 3. to 4. as above. (7)Select the SOFT with the [OK] key. (8)Repeat the steps 3. to 4. as above. (9)Select COOL with the [OK] key.
ЮОЧЩШМНМЯТЬЯОЬНСЪМ
(10)Adjust the [MENU / ] key to bring the set values
of < 6.WDR R > to < 8.WDR B > to the values shown
óî
óî
óïð
óî
ð
ð
in the table.
(11)Press the [OK] key to memorize the set values. (12)Select COOL with the [OK] key. (13)Repeat the steps 10. to 11. as above. (14)Select WARM with the [OK] key. (15)Repeat the steps 10. to 11. as above. (16)Select NORAML with the [OK] key. (17)Repeat the steps 10. to 11. as above.
ЭССФЙЯОУТСОУЯФ
ïò ÉÜÎ Î упооор
îò ÉÜÎ Ù îóïïð
íò ÉÜÎ Þ ððð
4.8.6PIP SETTING [HV-29JH74/G]
Item
Measuring
instrument
PIP POSITION Signal
generator
Remote control unit
LEFT POS.
UPPER POS.
LOWER POS.
PIP
screen
80% ±2%
Test pointAdjustment partDescription
[7. PIP]
3. PIP HORPOS
4. PIP VERPOS
Proceed to the following adjustment after having
completed the adjustments of DEFLECTION circuit.
PAL PIP POSITION
(1)Receive the PAL colour bar signal for Main screen
and input the PAL cross hatch signal for PIP screen.
RIGHT POS.
(2)Set the ZOOM mode to REGULAR. (3)Select 7. PIP from the SERVICE MODE. (4)Select < 3. PIP HORPOS > and < 4. PIP VERPOS >. (5)Adjust the left upper position of PIP screen is roughly
shown in a left figure.
NTSC PIP POSITION
(1)Receive the NTSC colour bar signal for Main screen
and input the NTSC cross hatch signal for PIP
screen.
PIP
screen
80% ±2%
Main screen size
(2)Follow the same step 2 to 5 as in PAL POSITION.
Main screen size
(No.YA164)1-27
4.8.7PURITY AND CONVERGENCE
PURITY ADJUSTMENT
(1)Demagnetize CRT with the demagnetizer.
(2)Loosen the retainer screw of the deflection yoke.
(3)Remove the wedges.
ЙЫЬЩЫ
ЬЗТЯУЧЭ ЭСТКЫОЩЫТЭЫ ЯЬЦЛНМУЫТМ
РЛОЧМЗ УЯЩТЫМшРч
(4)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 center 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 purity
is properly adjusted.
ÝÎÌ
ìê
ЭОМ НСЭХЫМ РЙЮ
ÜÛÚò ÇÑÕÛ
РсЭ УЯЩТЫМН
РсЭ УЯЩТЫМН
Ð æ
РЛОЧМЗ
УЯЩТЫМ м ж м РСФЫН ш½±²ª»®¹»²½» ³¿¹²»¬ч к ж к РСФЫН ш½±²ª»®¹»²½» ³¿¹²»¬ч
Fig.1
PURITY MAGNETS
Short lug
Long lug
Bring the long lug over the short lug and position them horizontally.
Fig.2
( FRONT VIEW )
GREEN RASTER
CENTER
Fig.3
1-28 (No.YA164)
PURITY ADJUSTMENT
(1)Input a crosshatch signal.
(2)Using 4-pole convergence magnets, overlap the red and
blue lines in the center of the screen (Fig.1) and turn them to magenta (red/blue).
(3)Using 6-pole convergence magnets, overlap the magenta
(red/blue) and green lines in the center of the screen and turn them to white.
(4)Repeat 2 and 3 above, and make best convergence.
After adjustment, fix the wedge at the original position.Fasten
the retainer screw of the deflection yoke.Fix the 6 magnets with glue.
DYNAMIC (periphery) CONVERGENCE ADJUSTMENT
After adjusting purity & static convergence.
(1)Move the deflection yoke up and down to adjust the pin
cushion distortion in the screen top and bottom. (See Fig. 2)
( FRONT VIEW )
Fig.1
( FRONT VIEW )
TOP
BOTTOM
Fig.2
(2)Move the deflection yoke left to right to overlap the lines in
the periphery, and match the Yv(VR1). (As shown in Fig. 4)
(3)Using the VR1 on the deflection yoke, match the YH
(CROSS). (See Fig. 3 and 6)
(4)Using the VR2 on the deflection yoke, match the YH (BOW).
(See Fig. 3 and 6)
(5)Repeat the steps 1 and 4 and obtain an optimum
convergence.
(6)Differential(XV) coil ADJUSTMENT.
In case where the horizontal lines of red and blue around the center of both sides of the picture as shown in Fig. 5, adjust the XV difference by using the differential coil (XV coil) on the top of the deflection yoke (Fig. 6) so as to minimize the XV difference.
ÝÎÌ
ЪОСТМ
ÇØÝ
шКОоч
ÈÊ ÝÑ×Ô
ÇÊ
шКОпч
( FRONT VIEW )
RED
BLUE
GREEN
RED
( FRONT VIEW )
GREEN
BLUE
RED
шЪОСТМ КЧЫЙч
YH
GREEN
YH
Fig.3
YV
YV
Fig.4
BLUE
REDBLUEGREEN
BLUE
GREEN
RED
RED
GREEN
BLUE
RED GREEN BLUE
BLUE GREEN RED
Fig.6
Ȫ
ЮФЛЫ шОЫЬч
ЩОЫЫТ
ОЫЬшЮФЛЫч
Fig.5
(No.YA164)1-29
SECTION 5
TROUBLESHOOTING
5.1SELF CHECK FUNCTIONS
5.1.1OUTLINE
These models have self-check functions given below. When an abnormality has been detected, the SUB POWER is turned off and POWER LED is blinking. green An abnormality is detected by the signal input state of the control line connected to the microcomputer.
5.1.2SELF CHECK ITEMS
Check itemDetails of detectionMethod of detectionState of abnormality
B1 over-current protection
CRT neck broken protection
X-ray protectionThe rise of a high voltage
5.1.3SELF CHECK INDICATING FUNCTION
When an abnormality has been detected at about 5 seconds after the power is turned on, the SUB POWER is turned off immediately and the POWER LED begins blinking green.
An over-current on the low B line is detected.
Operation of CRT neck broken protection circuit
valueis detected
The protect port on the microcomputer (11pin) is always monitored at 150msec intervals. If an abnormality is detected nine time successively, it is judged that there is an abnormality.
DITTODITTO
DITTODITTO
When an abnormality has detected, the SUB POWER is turned off and POWER LED begins blinking green. While the SUB POWER is being turned off, the POWER key on the remote control unit is not operational until the power cord is taken out and put in again.
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Þ´·²µ·²¹ ÔÛÜ
НЛЮуРСЙЫО СЪЪ
1-30 (No.YA164)
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