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AV28WT5EPS AV24WT5EPS AV28WT5EIS AV24WT5EIS AV28WT5EKS AV24WT5EKS
SERVICE MANUAL
COLOUR TELEVISION
BASIC CHASSIS
JK
AV28WT5EPS AV24WT5EPS AV28WT5EIS AV24WT5EIS AV28WT5EKS AV24WT5EKS
CONTENTS
! ! ! ! ! ! ! ! SPECIFICATIONS 2 SAFETY PRECAUTIONS 4 5 WARNING 7 FEATURES MAIN DIFFERENCE PARTS LIST 9 SPECIFIC SERVICE INSTRUCTIONS 10 SERVICE ADJUSTMENTS 17 PARTS LIST 39
OPERATING INSTRUCTIONS 1-1 STANDARD CIRCUIT DIAGRAM 2-1
1
COPYRIGHT © 2001 VICTOR COMPANY OF JAPAN, LTD.
No.51776 Jan. 2001
AV28WT5EPS AV28WT5EIS AV28WT5EKS
SPECIFICATIONS
Item AV28WT5EPS × × Dimensions ( W×H×D ) Mass TV RF System Colour System Stereo System Teletext System 716mm×489mm×496mm 34.2kg CCIR (B/G, I ,L) PAL / SECAM / NTSC (Only in EXT mode) A2 / NICAM FLOF (Fastext) TOP (German system) WST(Standard system)
(28" Model)
Content AV28WT5EIS AV28WT5EKS
CCIR (I ) PAL / NTSC (Only in EXT mode) NICAM FLOF (Fastext) WST(Standard system)
CCIR ( I ) PAL / NTSC (Only in EXT mode) NICAM
Receiving Frequency VHF 47MHz 470MHz UHF 470MHz 862MHz French CATV 116MHz 172MHz / 220MHz 469MHz Intermediate Frequency VIF Carrier 38.9MHz (B/G, I ,L)/ 33.95MHz (L') SIF Carrier 33.4MHz (5.5MHz:B/G) / 32.9MHz (6.0MHz:I) / 32.4MHz (6.5MHz:L) / 27.45MHz (6.5MHz:L') Colour Sub Carrier Freq. PAL 4.43MHz SECAM 4.40625MHz / 4.25MHz NTSC 3.58MHz / 4.43MHz Power Input Power Consumption AC 220V240V , 50Hz 156W(Max) / 122W(Avg), 122W/h(ITALY) Aerial Input Term Picture Tube High Voltage Speaker Audio Output EXT-1/EXT-2/EXT-3 (Input / Output) EXT-4 (Input) 75unbalanced, Coaxial Visible size : 66cm, Measured diagonally +1kV 30.0kV (at zero beam -1.5kV current) 10cm×3cm Oval type×2 5W + 5W 21-pin Euro connector (SCART socket)
47MHz 470MHz 470MHz 862MHz 470MHz 862MHz
38.9MHz ( I ) 32.9MHz (6.0MHz:I)
38.9MHz ( I ) 32.9MHz (6.0MHz:I)
4.43MHz 3.58MHz / 4.43MHz
4.43MHz 3.58MHz / 4.43MHz
Video 1Vp-p 75(RCA pin jack) Audio(L/R) 500mVrms(!-4dBs!), High Impedance (!RCA pin jack!) S / Video Y : 1Vp-p POSITIVE (Negative sync Provided, when terminated with 75) C : 0.286Vp-p (Burst signal, when terminated with 75)
AUDIO OUT (Variable)
01Vrms, Low Impedance (RCA pin jack×2)
Headphone jack Remote Control Unit
Stereo mini jack (3.5mm ) RM-C54 (AAA/R03 dry battery×2) RM-C55 (AAA/R03 dry battery×2)
Design & specifications are subject to change without notice.
2 No.51776
AV24WT5EPS AV24WT5EIS AV24WT5EKS
SPECIFICATIONS
Item AV24WT5EPS × × Dimensions ( W×H×D ) Mass TV RF System Colour System Stereo System Teletext System 645mm×427mm×443mm 23.1kg CCIR (B/G, I ,L) PAL / SECAM / NTSC (Only in EXT mode) A2 / NICAM FLOF (Fastext) TOP (German system) WST(Standard system)
(24" Model)
Content AV24WT5EIS AV24WT5EKS
CCIR ( I ) PAL / NTSC (Only in EXT mode) NICAM FLOF (Fastext) WST(Standard system) 47MHz 470MHz 470MHz 862MHz 470MHz 862MHz
Receiving Frequency VHF 47MHz 470MHz UHF 470MHz 862MHz French CATV 116MHz 172MHz / 220MHz 469MHz Intermediate Frequency VIF Carrier 38.9MHz (B/G, I ,L) / 33.95MHz (L') SIF Carrier 33.4MHz (5.5MHz:B/G) / 32.9MHz (6.0MHz:I) /32.4MHz (6.5MHz:L) / 27.45MHz (6.5MHz:L') Colour Sub Carrier Freq. PAL 4.43MHz SECAM 4.40625MHz / 4.25MHz NTSC 3.58MHz / 4.43MHz Power Input Power Consumption AC 220V240V , 50Hz 127W(Max) / 92W(Avg) 92W/h(ITALY) Aerial Input Term Picture Tube High Voltage Speaker Audio Output EXT-1/EXT-2/EXT-3 (Input / Output) EXT-4 (Input) 75unbalanced, Coaxial Visible size : 56cm, Measured diagonally +1kV 30.0kV -1.5kV (at zero beam current) 10cm×3cm Oval type×2 5W + 5W 21-pin Euro connector (SCART socket)
38.9MHz ( I ) 32.9MHz (6.0MHz:I)
4.43MHz 3.58MHz / 4.43MHz
Video 1Vp-p 75(RCA pin jack) Audio(L/R) 500mVrms(!-4dBs!), High Impedance (!RCA pin jack!) S / Video Y : 1Vp-p POSITIVE (Negative sync Provided, when terminated with 75) C : 0.286Vp-p (Burst signal, when terminated with 75)
AUDIO OUT Headphone jack Remote Control Unit
01Vrms, Low Impedance (RCA pin jack) Stereo mini jack (3.5mm ) RM-C54 (AAA/R03 dry battery×2) RM-C55 (AAA/R03 dry battery×2)
Design & specifications are subject to change without notice
No.51776 3
AV28WT5EPS
AV24WT5EPS
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 EARTH : ($) side GND. Don't short between the LIVE side GND and ISOLATED(NEUTRAL) side GND or EARTH side GND and never measure with a measuring apparatus (oscilloscope etc.) the LIVE side GND and ISOLATED(NEUTRAL) side GND or EARTH side GND at the same time. 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.
AV28WT5EPS / AV24WT5EPS
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, screwheads, earphone jack, control shafts, etc.) to be sure the product is safe to operate without danger of electrical shock. (1) 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. (2) 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 ohms per volt or more sensitivity in the following manner. Connect a 1500" 10W resistor paralleled by a 0.15#F 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 ON EACH EXPOSED METAL PART
1500 " 10W GOOD EARTH GROUND
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No.51776
AV28WT5EIS AV28WT5EKS
AV24WT5EIS AV24WT5EKS
SAFETY PRECAUTIONS
1. The design of this product contains special hardware and 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 product 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 product have special safety-related characteristics. These characteristics are often not evident from visual inspection nor can the protection afforded by them necessary be obtained by using replacement components rated for higher voltage, wattage, etc. Replacement parts which
AV28WT5EIS / AV24WT5EIS AV28WT5EKS / AV24WT5EKS
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 the 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. The leads in the products are routed and dressed with ties, clamps, tubing's, barriers and the like to be separated from live parts, high temperature parts, moving parts and / or sharp edges for the prevention of electric shock and fire hazard. When service is required, the original lead routing and dress should be observed, and it should be confirmed that they have been returned to normal, after re-assembling.
WARNING
1. 2. 3. 4. 5. The equipment has been designed and manufactured to meet international safety standards. It is the legal responsibility of the repairer to ensure that these safety standards are maintained. Repairs must be made in accordance with the relevant safety standards. It is essential that safety critical components are replaced by approved parts. If mains voltage selector is provided, check setting for local voltage.
No.51776
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AV28WT5EPS AV28WT5EIS AV28WT5EKS
AV24WT5EPS AV24WT5EIS AV24WT5EKS
21-pin Euro connector (SCART socket) : EXT-1 / EXT-2 / EXT-3
(P-P= Peak to Peak, S-W= Sync tip to white peak, B-W= Blanking to white peak)
Pin No. 1 Signal Designation AUDIO R output Matching Value 500mVrms(Nominal), Low impedance 500mVrms(Nominal), High impedance 500mVrms(Nominal), Low impedance EXT-1 (TV OUT) (TV OUT) 500mVrms(Nominal), High impedance 700mVB-W, 75 Low : 0-3V, High : 8-12V, High impedance NC 700mVB-W, 75 NC R : 700mVB-W, 75 C : 300mVP-P, 75 16 17 18 19 Ys input GND(VIDEO output) GND(VIDEO input) VIDEO output 1VP-P(Negative going sync), 75 Low : 0 - 0.4, High : 1 - 3V, 75 (only R) (TV) 20 21 VIDEO / Y input COMMON GND 1VP-P(Negative going sync), 75 EXT-2 NC (LINE OUT) (LINE OUT) NC NC NC (only C) NC (LINE OUT) NC NC NC NC NC NC (only C) NC EXT-3
2 3
AUDIO R input AUDIO L output
NC
4 5 6 7 8
AUDIO GND GND (B) AUDIO L input B input FUNCTON SW (SLOW SW)
9 10 11 12 13 14 15
GND (G) SCL3 G input SDA3 GND (R) GND (YS) R / C input
[Pin assignment]
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No.51776
AV28WT5EPS AV28WT5EIS AV28WT5EKS
AV24WT5EPS AV24WT5EIS AV24WT5EKS
FEATURES
" By preference, users can select the picture size from REGULAR, PANORAMIC, FULL, 14:9 ZOOM, 16:9 ZOOM, 16:9 ZOOM SUB TITLE modes. When the TV unit received WSS picture signal, the picture can be changed to 16:9 ZOOM mode automatically. " The TELETEXT SYSTEM has a built-in FASTEXT, TOP(Only AV28WT5EPS / AV24WT5EPS) and WST system. " Because this TV unit corresponds to multiplex broadcast, users can enjoy music programs and sporting events with live realism. In addition, BILINGUAL programs can be heard in their original language. " Built-in ECO (ECONOMY, ECOLOGY) MODE. 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. " Users can make VCR dubbing of picture and sound by controlling the AV selector to select an optional source at the EXT-2 output shown in figure.
TV
EXT-1
EXT-3
EXT-4
EXT-2
No.51776
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AV28WT5EPS AV28WT5EIS AV28WT5EKS
AV24WT5EPS AV24WT5EIS AV24WT5EKS
MAIN DIFFERENCE PARTS LIST
(28" Model)
Model Name ! Part Name
AV28WT5EPS
SJK-1712A-U2 SJK0S712A-U2 QMPK160-185-JC LC20433-008A-U LC20434-008A-U AEM1052-031-E LCT0897-001A-U LCT0898-001A-U RM-C54-1C AEM1061-001-E 2824WT5-HSAEI ×
AV28WT5EIS
QMPN130-185-JC LC20080-015A-U AEM1052-030-E LCT0900-001A-U RM-C55-1C × × ×
AV28WT5EKS
SJK-1912A-U2 SJK0S912A-U2 LC20091-023A-U AEM1052-029-E LCT0899-001A-U × × AEM3148-001-E
MAIN PWB AV SEL. PWB ! POWER CORD ! RATING LABEL EURO LABEL ! INST BOOK REMOTE CONTROL UNIT X-RAY CARD S. DIAGRAM ONLY ITALY(SERVICE) REG. SHEET
(24" Model)
Model Name !
AV24WT5EPS
Part Name
AV24WT5EIS QMPN130-185-JC LC20080-014A-U AEM1052-025-E LCT0900-001A-U RM-C55-1C × × ×
AV24WT5EKS SJK-1913A-U2 SJK0S913A-U2 LC20091-022A-U AEM1052-026-E LCT0899-001A-U × × AEM3148-001-E
MAIN PWB AV SEL. PWB ! POWER CORD ! RATING LABEL EURO LABEL ! INST BOOK REMOTE CONTROL UNIT X-RAY CARD S. DIAGRAM ONLY ITALY(SERVICE) REG. SHEET
SJK-1713A-U2 SJK0S713A-U2 QMPK160-185-JC LC20433-007A-U LC20434-007A-U AEM1052-027-E LCT0897-001A-U LCT0898-001A-U RM-C54-1C AEM1060-001-E 2824WT5-HSAEI ×
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No.51776
AV28WT5EPS AV28WT5EIS AV28WT5EKS
AV24WT5EPS AV24WT5EIS AV24WT5EKS
SPECIFIC SERVICE INSTRUCTIONS
REPLACEMENT OF CHIP COMPONENT
! CAUTIONS
1. 2. 3. 4. 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.
! 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.
! 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) Shift with tweezers and remove the chip part.
(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 extra solder to each lead.
# 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.
SOLDER
SOLDER
A
(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.
B
C
(4) Then solder leads B and C.
A B C
Note : After removing the part, remove remaining solder from the pattern.
No.51776
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AV28WT5EPS AV28WT5EIS AV28WT5EKS
DISASSEMBLY PROCEDURE
REMOVING THE REAR COVER
1. Unplug the power cord.
(28" Model)
2. Remove the 13 screws marked"A"as shown in the Fig. 1. 3. Withdraw the rear cover toward you.
REMOVING THE CHASSIS
" After removing the rear cover. 1. Remove the screw marked "B"on the S/VIDEO terminal of FRONT CABINET as shown in the Fig. 1. 2. Slightly raise the both sides of the chassis by hand and remove the two claws under the both sides of the chassis from the front cabinet. 3. Withdraw the chassis backward. (If necessary, take off the wire clamp, connectors etc.)
E
REMOVING THE AV TERMINAL BOARD
" After removing the rear cover. 1. Remove the 2 screws marked"C"as shown in the Fig. 1. 2. Remove the claws marked "D " under the CHASSIS as shown in Fig. 2. , 3. While raising the claw marked "E" remove the top of the AV TERMINAL BOARD slightly in the direction of arrow"F" as shown in Fig. 2.
AV TERMINAL BOARD
F
D
REMOVING THE SPEAKER
" After removing the rear cover. 1. Remove the 2 screws marked"G"as shown in Fig. 1. 2. Follow the same steps when removing the other hand speaker.
AV SEL PWB
D Fig. 2
CHECKING THE PW BOARD
To check the back side of the PW Board. 1) Pull out the chassis. (Refer to REMOVING THE CHASSIS). 2) Erect the chassis vertically so that you can easily check the back side of the PW Board. [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.
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.
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No.51776
AV28WT5EPS AV28WT5EIS AV28WT5EKS
(28" Model)
FRONT CABINET
B
SPEAKER
CRT SOCKET PWB
AV SEL. PWB POWER & DEF. PWB
CLAW FRONT CONTROL PWB CONTROL BASE AV TERMINAL BOARD MAIN PWB CHASSIS
CLAW
REAR COVER
C
B
Fig. 1
No.51776
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AV24WT5EPS AV24WT5EIS AV24WT5EKS
DISASSEMBLY PROCEDURE
REMOVING THE REAR COVER
1. Unplug the power cord.
(24" Model)
2. Remove the 9 screws marked"A"as shown in the Fig. 3. 3. Withdraw the rear cover toward you.
REMOVING THE CHASSIS
" After removing the rear cover. 1. Slightly raise the both sides of the chassis by hand and remove the two 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.)
REMOVING THE AV TERMINAL BOARD
" After removing the rear cover. 1. Remove the 2 screws marked"B"as shown in the Fig. 3. 2. Remove the claws marked "C " under the CHASSIS as shown in Fig. 4. 3. While raising the claw marked "D" remove the top of the AV , TERMINAL BOARD slightly in the direction of arrow"E" as shown in Fig. 4.
REMOVING THE SPEAKER
" After removing the rear cover. 1. Remove the 2 screws marked"F"as shown in Fig. 3. 2. Follow the same steps when removing the other hand speaker. AV TERMINAL BOARD
E
D
CHECKING THE PW BOARD
" To check the back side of the PW Board. 1) Pull out the chassis. (Refer to REMOVING THE CHASSIS). 2) Erect the chassis vertically so that you can easily check the back side of the PW Board. [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. AV SEL. PWB
C
C Fig. 4
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.
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No.51776
AV24WT5EPS AV24WT5EIS AV24WT5EKS
(24" Model)
FRONT CABINET
SPEAKER
CRT SOCKET PWB
AV SEL. PWB POWER & DEF. PWB
CLAW FRONT CONTROL PWB CHASSIS
AV TERMINAL BOARD MAIN PWB
CLAW
REAR COVER
C
B
Fig. 3
No.51776
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AV28WT5EPS AV28WT5EIS AV28WT5EKS
AV24WT5EPS AV24WT5EIS AV24WT5EKS
REMOVING THE CRT
$ Replacement of the CRT should be performed by 2 or more persons. % After removing the cover, chassis etc., 1. Putting the CRT change table on soft cloth, the CRT change table should also be covered with such soft cloth (shown in Fig.5). 2. While keeping the surface of CRT down, mount the TV set on the CRT change table balanced will as shown in Fig.6. 3. Remove 4 screws marked by arrows with a box type screw driver as shown in Fig.6. % Since the cabinet will drop when screws have been removed, be sure to support the cabinet with hands. 4. After 4 screws have been removed, put the cabinet slowly on cloth (At this time, be carefully so as not to damage the front surface of the cabinet) shown in Fig.7. % The CRT should be assembled according to the opposite sequence of its dismounting steps. $ The CRT change table should preferably be smaller that the CRT surface, and its height be about 35cm. CRT CHANGE TABLE BOX TYPE SCREW DRIVER CRT CHANGE TABLE
APPROX. 35cm CLOTH
Fig. 5
CRT
Fig. 6
COATING OF SILICON GREASE FOR ELECTRICAL INSULATION ON THE CRT ANODE CAP SECTION.
% Subsequent to replacement of the CRT and HV transformer or repair of the anode cap, etc. by dismounting them, be sure to coat silicon grease for electrical insulation as shown in Fig.8. Wipe around the anode button with clean and dry cloth. (Fig.8) Coat silicon grease on the section around the anode button. At this time, take care so that any silicon greases dose not stick to the anode button. (Fig.9) Silicon grease product No. KS - 650N CABINET CRT
CRT CHANGE TABLE
Fig. 7
CRT
Anode button
Approx. 20mm (Do not coat grease on this section
Silicon grease should be coated by 5mm or more from the outside diameter of anode cap.
Silicon grease coating
Anode button (No sticking of silicon grease)
Coating position of silicon grease Anode cap
Fig. 8
Fig. 9
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No. 51776
AV28WT5EPS AV28WT5EIS AV28WT5EKS
AV24WT5EPS AV24WT5EIS AV24WT5EKS
REPLACEMENT OF MEMORY ICs
1. Memory ICs
This TV use memory ICs. In the memory ICs, there are memorized data for correctly operating the video and deflection circuits. When replacing memory ICs, be sure to use ICs written with the initial values of data.
2. Procedure for replacing memory ICs
PROCEDURE (1) Power off Switch the power off and unplug the power cord from the outlet.
SERVICE MENU 1. IF 2. V/C 3. AUDIO 4. DEF 5. VSM PRESET 6. VPS 7. AUTO PROGRAM (OFF)
(2)
Replace ICs. Be sure to use memory ICs written with the initial data values.
(3)
Power on Plug the power cord into the outlet and switch the power on.
1-7 : SELECT
: EXIT
(4)
Check and set SYSTEM CONSTANT SET: 1) Press the INFORMATION key and the MUTING key of the REMOTE CONTROL UNIT simultaneously. 2) The SERVICE MENU screen of Fig. 1 will be displayed. 3) While the SERVICE MENU is displayed, press the INFORMATION key and MUTING key simultaneously, and the SYSTEM CONSTANT SET screen of Fig. 2 will be displayed. 4) Check the setting values of the SYSTEM CONSTANT SET of Table 1. If the value is different, select the setting item with the FUNCTION UP/DOWN key, and set the correct value with the FUNCTION -/+ key. 5) Press the MENU key to memorize the setting value. 6) Press the INFORMATION key twice, and return to the normal screen.
Fig.1
* It must not adjust without signal.
SYSTEM CONSTANT SET MODEL=JK_EURO COUNTRY INCH MODEL - +
OK
(V*.****) : ** : ** : WT : EXIT
: STORE
JVC JK-II EURO V00 ******** - ***** Fig.2
(5)
Setting of receive channels Set the receive channel. For setting, refer to the OPERATING INSTRUCTIONS.
NAME OF REMOTE CONTROL KEY
Names of key INFORMATION key
i
(6)
User settings Check the user setting values of Table 2, and if setting value is different, set the correct value. For setting, refer to the OPERATING INSTRUCTIONS.
MUTING
MENU
OK
(7)
Setting of SERVICE MENU Verify the setting items of the SERVICE MENU of Table 3, and reset where necessary. For setting, refer to the SERVICE ADJUSTMENTS.
FUNCTION UP/DOWN
FUNCTION -/+
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AV24WT5EPS AV24WT5EIS AV24WT5EKS
SETTING VALUES OF SYSTEM CONSTANT SET (TABLE 1)
Setting value Setting item Setting content EK 24 WT EN IR 28 WR EP EE 32 AV28WT5EPS AV24WT5EPS EP 28 24 WT AV28WT5EIS AV24WT5EIS IR 28 24 AV28WT5EKS AV24WT5EKS EK 28 24
COUNTRY INCH MODEL
USER SETTING VALUES (TABLE 2)
PICTURE SETTING TINT CONTRAST BRIGHT SHARP COLOUR ECO MODE AUTO VNR COLOUR SYSTEM 4:3 AUTO ASPECT COOL REFER to VSM PRESET ID S-IN DUBBING EXT SETTING BLANK BLANK EXT-1EXT-2
OFF PICTURE FEATURES AUTO TV : According to preset CH EXT : AUTO PANORAMIC SLEEP TIMER BLUE BACK CHILD LOCK DECODER (EXT-2) SOUND SETTING
FEATURES OFF ON ID : No.**** ALL CH OFF OFF INSTALL ENGLISH PRESET CH only The others : BLANK
STEREO / BASS TREBLE BALANCE HYPER SOUND
LANGUAGE +3 CENTER OFF DEMO EDIT/MANUAL
OFF
SERVICE MENU SETING ITEMS (TABLE 3)
Setting item 1. IF VCO Setting value Setting item 4. DEF. Setting value 1. V-SHIFT 2. V-SIZE 3. SUBTITLE 4. H-CENT 5. H-SIZE 6. EW-PIN 7. TRAPEZ 8. EW. COR. L 9. EW. COR. H 10. V. S-COR 11. V- LIN 12. H-BLK-R 13. H-BLK-L 14. V-EHT 15. H-EHT 16. EHT-GAIN 1. BRIGHT 2. CONT. 3. COLOUR 4. SHARP 5. HUE 6. R DRIVE 7. B DRIVE VPS PDC ON / OFF
2. V / C
1. 2. 3. 4. 5. 6. 7. 8. 9.
CUT OFF DRIVE BRIGHT CONT. COLOUR HUE BLACK OFFSET (Only SECAM) SHARP PURITY 5. VSM PRESET COOL NORMAL WARM
1. AUDIO (Do not adjust)
1. 2. 3. 4. 5.
CONC LIMIT A2 ID THR ALC BASS TREBLE
6. VPS (Do not adjust) 7. AUTO PROGRAM (Do not adjust)
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No. 51776
AV28WT5EPS AV28WT5EIS AV28WT5EKS
AV24WT5EPS AV24WT5EIS AV24WT5EKS
SERVICE ADJUSTMENTS
BEFORE STARTING SERVICE ADJUSTMENT
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 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. 3. Make sure that connection is correctly made to AC power source. 4. Turn on the power of the TV and measuring instrument for warming up for at least 30 minutes before starting adjustment. 5. If the receive or input signal is not specified, use the most appropriate signal for adjustment. 6. Never touch parts (such as variable resistors, transformers and condensers) not shown in the adjustment items of this service adjustment. 7. Preparation for adjustment (presetting): Unless otherwise specified in the adjustment items, preset the following functions with the REMOTE CONTROL UNIT: " Setting position
PICTURE MODE (VSM) SLEEP TIMER BALANCE ECO ZOOM NORMAL OFF CENTER OFF PANORAMIC
MEASURING INSTRUMENT AND FIXTURES
1. 2. 3. 4. DC voltmeter (or digital voltmeter) Oscilloscope Signal generator (Pattern generator) [PAL / SECAM / NTSC] Remote control unit
ADJUSTMENT ITEMS
B1 power supply check. Adjustment of FOCUS. IF circuit adjustment. VSM preset adjust setting. VIDEO / CHROMA circuit adjustment. DEFLECTION circuit adjustment. H. BLANKING ADJUSTMENT. AUDIO circuit adjustment. (Do not adjust)
No. 51776
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AV28WT5EPS AV28WT5EIS AV28WT5EKS
ADJUSTMENT LOCATIONS (1) (28" Model)
FRONT
FRONT CONTROL PWB (1) (AV28WT5EPS/EIS/EKS)
F901 SP L
SP R PW POWER SW CN001
FRONT
FRONT
MAIN PWB
CN001 IC701 IC702 MEMORY L W
POWER&DEF PWB
DEG
AV SEL PWB
CRT SOCKET PWB (SOLDER SIDE)
TP-47B TP-47R TP-47G FOCUS
CN006 TUNER HV IC301 X CN008 CN009
1 5
TOP
1pin:B1(TP-91) 2pin:NC 3pin:NC 4pin:NC 5pin:GND
SCREEN
E1 CN008 CN009 TP-E
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No. 51776
AV24WT5EPS AV24WT5EIS AV24WT5EKS
ADJUSTMENT LOCATIONS (2) (24" Model)
FRONT
FRONT CONTROL PWB (1) (AV24WT5EPS/EIS/EKS)
SP R
SP L
CN001
FRONT
FRONT
MAIN PWB
CN001 PW IC702 MEMORY L IC701 W
POWER&DEF PWB
DEG
F901
POWER SW
AV SEL PWB
CRT SOCKET PWB (SOLDER SIDE)
TP-47B TP-47R TP-47G FOCUS
CN006 TUNER HV IC301 X CN008 CN009
1 5
TOP
1pin:B1(TP-91) 2pin:NC 3pin:NC 4pin:NC 5pin:GND
SCREEN
E1 CN008 CN009 TP-E
No. 51776
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AV28WT5EPS AV28WT5EIS AV28WT5EKS
AV24WT5EPS AV24WT5EIS AV24WT5EKS
BASIC OPERATION SERVICE MENU
1. TOOL OF SERVICE MENU OPERATION Operate the SERVICE MENU with the REMOTE CONTROL UNIT. 2. SERVICE MENU ITEMS With the SERVICE MENU, various (adjustments): (1) 1. IF (2) 2.V/C (3) 3.AUDIO (4) 4.DEF
settings (adjustments) can be made, and they are broadly classified in the following items of settings
This mode adjusts the setting values of the IF circuit. This mode adjusts the setting values of the VIDEO / CHROMA circuit. This mode adjusts the setting values of the multiplicity SOUND circuit. This mode adjusts the setting values of the DEFLECTION circuit for each aspect mode given below. REGULAR (50/60Hz) PANORAMIC (50/60Hz) 14:9 ZOOM (50/60Hz) 16:9 ZOOM (50/60Hz) SUB TITLE (50/60Hz) FULL (50/60Hz) (5) 5.VSM PRESET This mode adjusts the initial setting values of COOL,NOMAL and WARM. (VSM : Video Status Memory) (6) 6.VPS This mode shows the monitor of the VPS and PDC.(Do not adjust). (VPS : Video Program System, PDC : Program Delivery Code) (7) 7.AUTO PROGRAM By turning the power switch on, you can get the state of AUTO PROGRAM. (Do not adjust)
3. BASIC OPERATION OF SERVICE MENU (1) How to enter SERVICE MENU Press the INFORMATION key and the MUTING key of the REMOTE CONTROL UNIT simultaneously, and the SERVICE MENU screen of Fig. 1 will be displayed.
SERVICE MENU
SERVICE MENU 1. IF 2. V/C 3. AUDIO 4. DEF 5. VSM PRESET 6. VPS 7. AUTO PROGRAM (OFF)
1-7 : SELECT
: EXIT
Fig.1
(2) Selection of SUB MENU SCREEN Press one of keys 17 of the REMOTE CONTROL UNIT and select the SUB MENU SCREEN (See Fig. 3), form the SERVICE MENU. SERVICE MENU SUB MENU 1. IF 2. V / C 3. AUDIO 4. DEF. 5. VSM PRESET 6. VPS 7. AUTO PROGRAM
NEME OF REMOTE CONTOROL KEY
Names of key INFORMATION key
i
MUTING
MENU
OK
FUNCTION UP/DOWN
FUNCTION -/+
Fig.2
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No. 51776
AV28WT5EPS AV28WT5EIS AV28WT5EKS
AV24WT5EPS AV24WT5EIS AV24WT5EKS
SERVICE MENU
SERVICE MENU 1. IF 2. V/C 3. AUDIO 4. DEF 5. VSM PRESET 6. VPS 7. AUTO PROGRAM (OFF) 1-7 : SELECT : EXIT SUB MENU 7. AUTO PROGRAM (Do not adjust) 7. AUTO PROGRAM (OFF) 7. AUTO PROGRAM (ON)
SUB MENU 5. VSM PRESET
SUB MENU 1.IF (VCO)
**. VCO (CW) **.** MHz
VSM PRESET COOL NORMAL WARM 1. 2. 3. 4. 5. 6. 7. BRIGHT CONT. COLOUR SHARP HUE R DRIVE B DRIVE 1.BRIGHT
NORMAL ***
TOO HIGH ABOVE REFERENCE JUST REFERENCE BELOW REFERENCE TOO LOW : EXIT
-+
OK : STORE
: EXIT
SUB MENU 6. VPS (Do not adjust) VPS VPS = 0000H(- - -) PDC 8 / 30 / 1 = 0404H
: EXIT
SUB MENU 2. V/C 1. 2. 3. 4. 5. 6. 7. 8. 9. CUT OFF DRIVE BRIGHT CONT. COLOUR HUE BLACK OFFSET SHARP (Do not adjust) PURITY (Do not adjust)
V/C PAL 1. CUT OFF (R) **** (G) **** (B) **** : EXIT
-+
OK : STORE
SUB MENU 3. AUDIO (Do not adjust) AUDIO 1. CONC LIMIT 0AH C AD BITS = 00000000 1. 2. 3. 4. 5. CONC LIMIT A2 ID THR ALC BASS TREBLE
-+
OK : STORE
: EXIT
SUB MENU 4. DEF
DEF
**Hz PANORAMIC ** *** (**) : EXIT
1. V-SHIFT
-+
OK : STORE
1. V-SHIFT 2. V-SIZE 3. SUBTITLE 4. H-CENT 5. H-SIZE 6. EW-PIN 7. TRAPEZ 8. EW.COR.L 9. EW.COR.H 10. V.S-COR 11. V-LIN 12. H-BLK-R 13. H-BLK-L 14. V-EHT(Do not adjust) 15. H-EHT(Do not adjust) 16. EHT-GAIN(Do not adjust)
Fig. 3 SUB MENU SCREEN
No. 51776
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AV28WT5EPS AV28WT5EIS AV28WT5EKS
AV24WT5EPS AV24WT5EIS AV24WT5EKS
(3) Method of Setting 1) Method of Setting 1.IF [VCO] 1 Key Select 1.IF. The VCO (CW) screen will be displayed in yellow when the AFC voltage is at a certain level and in blue when it is at other levels. INFORMATION Key Return to the SERVICE MENU screen.
2) Method of setting 2.V/C, 3.AUDIO, 4.DEF and 5.VSM PRESET. 25 Key Select one from 2. V/C, 3. AUDIO, 4. DEF and 5. VSM PRESET. FUNCTION UP/DOUN Key Select setting items. FUNCTION -/+ Set (adjust) the setting values of the setting items. (Use the number keys of the REMOTE CONTROL UNIT for setting of WHITE BALANE. For the setting, refer to each item concerned.) MENU Key Memorize the setting value. (Before storing the setting values in memory, do not press the CH, TV, POWER ON / OFF key if you do, the values will not be stored in memory.) INFOMATION Key Return to the SERVICE MENU screen.
3) Method of setting 6.VPS and 7.AUTO PROGRAM. 6.VPS This mode displayed monitor of VPS systems. (Do not adjust) 7.AUTO PROGRAM When the MAIN POWER is turned on with the state of AUTO PROGRAM ON, you get a mode that initializes every existing set value including language selection. Because this mode is set at the factory upon completion of the adjustment, you need not to use it for service. (Do not adjust in this mode.)
(4) Release of SERVICE MENU 1) After completing the setting, return to the SERVICE MENU, then again press the INFORMATION key.
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No. 51776
AV28WT5EPS AV28WT5EIS AV28WT5EKS
AV24WT5EPS AV24WT5EIS AV24WT5EKS
ADJUSTMENTS
CHECK ITEM
Item Check of B1 Power Supply Measuring instrument Signal Generator Test point Adjustment part 1. 2. 3. 4. 5. 6. 7. Description Receive a any broadcast. Push the "ZOOM" key and select the FULL mode. Select 2. V/C from the SERVICE MENU. Select 1. CUT OFF with Function UP / DOWN key. Show one horizontal line with the 1 key. Turn the SCREEN VR, the whole black screen display. Connect a DC voltmeter to TP-91(B1) and TP-E(#).
TP-91(B1) TP-E(#) # [X connector DC voltmeter on POWER DEF PWB] Remote Control unit
8. Make sure that the voltage is DC144.5 ±2.0V. 9. Readjust the SCREEN VR to appear the horizontal line faintly, and cancel the horizontal line to press the 2 key. Check of High Voltage Signal Generator CRT anode 1. 2. 3. 4. 5. 6. 7. 8. 9. Receive a any broadcast. Push the "ZOOM" key and select the FULL mode. Select 2. V/C from the SERVICE MENU. Select 1. CUT OFF with Function UP / DOWN key. Show one horizontal line with the 1 key. Turn the SCREEN VR, the whole black screen display. Connect a DC voltmeter to CRT ANODE and chassis GND. +1kV Make sure that the voltage is DC 30.0kV -1.5kV . Readjust the SCREEN VR to appear the horizontal line faintly, and connect the horizontal line to press 2 key.
Chassis GND DC volunteer Remote Control unit
ADJUSTMENT OF FOCUS
Item Adjustment of FOCUS Measuring instrument Signal generator Test point Adjustment part FOCUS VR [In FBT] Description 1. Receive a cross-hatch signal. Select FULL mode. 2. While watching the screen, adjust the FOCUS VR to make the vertical and horizontal lines as fine and sharp as possible. 3. Make sure that when the screen is darkened, the lines remain in good focus.
FOCUS VR SCREEN VR
No. 51776
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AV28WT5EPS AV28WT5EIS AV28WT5EKS
AV24WT5EPS AV24WT5EIS AV24WT5EKS
IF CIRCUIT ADJUSTMENT
Item Adjustment of VCO Measuring instrument Remote control unit Test point Adjustment part " 1. 2. 3. Description Under normal conditions, no adjustment is required. Receive any broadcast. Select 1.IF from the SERVICE MENU. Check the characters colour of the JUST REFERENCE displayed to yellow.
VCO(CW) ***.** MHz TOO HIGH ABOVE REFERENCE JUST REFERENCE BELOW REFERENCE TOO LOW : EXIT
fv
YELLOW
VSM PRESET ADJUST SETTING
Item Setting of VSM PRESET Measuring instrument Remote control unit Test point Adjustment part 1. BRIGHT 2. CONT. 3. COLOUR 4. SHARP 5. HUE 6. R DRIVE 7. B DRIVE Description 1. Select 5.VSM PRESET from the SERVICE MENU. 2. Select COOL with the MENU key of the remote control unit. 1. Adjust the FUNCTION UP/DOWN and -/+ key to bring the set values of 1.BRIGHT 7. B DRIVE to the values shown in the table. 4. Press the MENU key and memorize the set value. 5. Respectively select the VSM PRESET mode for NORMAL and WARM, and make similar adjustment as in 3 above. 6. Press the MENU key and memorize the set value. $ Refer to OPERATING INSTRUCTIONS for the PICTURE MODE.
VSM preset mode Setting item COOL NORMAL WARM
1. BRIGHT SETTING VALUE 2. CONT. SETTING VALUE 3. COLOUR SETTING VALUE 4. SHARP SETTING VALUE 5. HUE SETTING VALUE 6. R DRIVE SETTING VALUE 7. B DRIVE SETTING VALUE
+0 +12
+0 +10
+0 +2
+6
+0
-2
+0
+0
-2
+0
+0
+0
-20
+0
+16
+23
+0
-13
SETTING VALUES OF VSM PRESET
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No. 51776
AV28WT5EPS AV28WT5EIS AV28WT5EKS
AV24WT5EPS AV24WT5EIS AV24WT5EKS
VIDEO / CHROMA CIRCUIT ADJUSTMENT
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.
Colour system Setting Item (Adjustment Item ) R 1. CUTOFF G B R 2. DRIVE B 3. BRIGHT 4. CONT. +0 +0 -10 8. SHARP (Do not adjust) 28"Model 24"Model -7 -10 OFF Initial setting value Setting item 5. COLOUR 6. HUE 7. BLACK OFFSET (SECAM) R-Y B-Y PAL +14 _____ _____ _____
Initial setting value SECAM +0 ______ +0 +0 NTSC 3.58 NTSC 4.43 +8 +2 _____ _____
-100 -100 -100 +0
9. PURITY (Do not adjust)
Item Adjustment of WHITE BALANCE (Low Light)
Measuring instrument Signal generator Remote control unit
Test point
Adjustment part 1.CUT OFF (R) (G) (B) SCREEN VR [In FBT] " 1. 2. 3. 4. 5. 6.
Description Set the PICTURE MODE to NORMAL. Receive a black and white signal (colour off). Select 2. V/C from the SERVICE MENU. Select 1.CUT OFF with the FUNCTION UP/DOWN key. Push the "ZOOM" key and select the "PANORAMIC" mode. Show one horizontal line with the 1 key. Gradually turn the SCREEN VR from the left end to the right direction to bring one of the red, green or blue colour faintly visible.
7. Press 49 key, and bring out the other 2 colours and make one horizontal line visible in white. 8. Turn the SCREEN VR and bring one white horizontal line faintly visible. 9. Press 2 key, turn off 1.CUT OFF screen. 10. Press the MENU key and memorize the set value.
Remote Control Unit H.LINE ON H.LINE OFF
1
R CUTOFF
2
G CUTOFF
3
B CUTOFF
4
R CUTOFF
5
G CUTOFF
6
B CUTOFF
7
8
9
No. 51776
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AV28WT5EPS AV28WT5EIS AV28WT5EKS
AV24WT5EPS AV24WT5EIS AV24WT5EKS
Item Adjustment of WHITE BALANCE (High Light)
Measuring instrument Signal generator Remote control unit
Test point
Adjustment part 2.DRIVE (R) (B)
Description " The adjustment for Low Light WHITE BALANCE should be finished. " Set the PICTURE MODE to NORMAL. 1. Receive a black and white signal (colour off). 2. Select 2.V/C from the SERVICE MENU. 3. Select 2.DRIVE with the FUNCTION UP/DOWN key. 4. Change the screen colour to white with 4 key or 7 key (Drive of Red), 6 key or 9 key (Drive of Blue). 5. Press the MENU key, and memorize the set values.
REMOTE CONTROL UNIT
1
2
3 DRIVE(R)
4
5
6
DRIVE(B) DRIVE(R) DRIVE(B)
7
8
9
Adjustment of SUB BRIGHT
Remote control unit
3.BRIGHT
Receive any broadcast. Select 2.V/C from the SERVICE MENU. Select 3.BRIGHT with the FUNCTION UP/DOWN key. Set the initial setting value with the FUNCTION -/+ key. If the brightness is not the best with the initial setting value, make fine adjustment until you get the best brightness. 6. Press the MENU key and memorize the set value.
1. 2. 3. 4. 5.
Adjustment of SUB CONT.
Remote control unit
4.CONT.
1. 2. 3. 4. 5.
Receive any broadcast. Select 2.V/C from the SERVICE MENU. Select 4.CONT with the FUNCTION UP/DOWN key. Set the initial setting value with the FUNCTION - / + key. If the contrast is not the best with the initial setting value, make fine adjustment until you get the best contrast. 6. Press the MENU key and memorize the set value.
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No. 51776
AV28WT5EPS AV28WT5EIS AV28WT5EKS
AV24WT5EPS AV24WT5EIS AV24WT5EKS
Item Adjustment of SUB COLOUR
Measuring instrument Remote control unit
Test point
Adjustment part 5.COLOUR (PALNTSC) PAL COLOUR
Description [Method of adjustment without measuring instrument]
(PAL COLOUR) 1. Receive PAL broadcast. 2. Select 2.V/C from the SERVICE MENU. 3. Select 5.COLOUR with the FUNCTION UP/DOWN key. 4. Set the initial setting value for PAL COLOUR with the FUNCTION - or + key. 5. If the colour is not the best with the initial set value, make fine adjustment until you get the best colour. 6. Press the MENU key and memorize the set value.
SECAM COLOUR Only AV28WT5EPS AV24WT5EPS
(SECAM COLOUR) 1. Receive a SECAM broadcast. 2. Make fine adjustment of SECAM COLOUR in the same manner as for above.
NTSC COLOUR
(NTSC 3.58 COLOUR) 1. Input a NTSC 3.58MHz COMPOSITE VIDEO signal from the EXT terminal. 2. Make similar fine adjustment of NTSC 3.58 COLOUR in the same manner as for above.
(NTSC 4.43 COLOUR) 1. When NTSC 3.58 is set, NTSC 4.43 will be automatically set at the respective values.
No. 51776
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AV28WT5EPS AV28WT5EIS AV28WT5EKS
AV24WT5EPS AV24WT5EIS AV24WT5EKS
Item Adjustment of SUB COLOUR
Measuring instrument Signal generator
Test point
Adjustment part 5.COLOUR (PALNTSC) PAL COLOUR
Description [Method of adjustment using measuring instrument]
TP-47B TP-E(#) # [CRT Oscilloscope SOCKET PWB ] Remote control unit
(PAL COLOUR) 1. Receive a PAL full field colour bar signal (75% white). 2. Select 2.V/C from the SERVICE MENU. 3. Select 5.COLOUR with the FUNCTION UP/DOWN key. 4. Set the initial setting value of PAL COLOUR with the FUNCTION - or + key. 5. Connect the oscilloscope between TP-47B and TP-E(#). 6. Adjust PAL COLOUR and bring the value of (A) in the illustration to the values as shown given billow (Voltage difference between white (W) and blue (B)). 7. Press the MENU key and memorize the setting value. MODEL 28" model 24" model VOLTAGE (W-B) +6V +4V
SECAM COLOUR Only AV28WT5EPS AV24WT5EPS
(SECAM COLOUR) 1. Receive a SECAM full field colour bar signal(75% white). 2. Set the initial setting value of SECAM COLOUR with the FUNCTION -/+ key. 3. Adjust SECAM COLOUR and bring the value of (A) in the illustration to the values as shown given billow (Voltage difference between white (W) and blue (B)). 4. Press the MENU key and memorize the setting value. MODEL 28" model 24" model VOLTAGE (W-B) +6V +4V
NTSC COLOUR
(NTSC 3.58 COLOUR) 1. Input a NTSC 3.58MHz COMPOSITE VIDEO signal (full field colour bar with 75% white) from the EXT terminal. 2. Set the initial setting value of NTSC 3.58 COLOUR with the FUNCTION -/+ key. 3. Adjust NTSC 3.58 COLOUR and bring the value of (A) of the illustration to 0V W-B. 4. Press the MENU key and memorize the setting value.
(A) (-) 0 (+)
W
Cy
Mg
B
(NTSC 4.43 COLOUR) 1. When NTSC 3.58 is set, NTSC 4.43 will be automatically set at the respective values.
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No. 51776
AV28WT5EPS AV28WT5EIS AV28WT5EKS
AV24WT5EPS AV24WT5EIS AV24WT5EKS
Item Adjustment of SUB HUE
Measuring instrument Remote control unit
Test point
Adjustment part 6.HUE
Description [Method of adjustment without measuring instrument]
NTSC 3.58 HUE
[NTSC 3.58 HUE] 1. Input a NTSC 3.58MHz COMPOSITE VIDEO signal (full field colour bar with 75% white) from the EXT terminal. 2. Select 2.V/C from the SERVICE MENU. 3. Select 6. HUE with the FUNCTION UP/DOWN key. 4. Set the initial setting value of NTSC 3.58 HUE with the FUNCTION -/+ key. 5. If you cannot get the best hue with the initial setting value, make fine adjustment until you get the best hue. 6. Press the MENU key and memorize the set value.
NTSC 4.43 HUE
[NTSC 4.43 HUE] 1. When NTSC 3.58 is set, NTSC 4.43 will be automatically set at the respective values.
Adjustment of SUB HUE
TP-47B TP-E(#) # [CRT Oscilloscope SOCKET PWB] Remote control unit Signal generator
6. HUE
[Method of adjustment using measuring instrument]
NTSC 3.58 HUE
(B) (-) 0 (+)
[NTSC 3.58 HUE] 1. Input a NTSC 3.58MHz COMPOSITE VIDEO signal (full field colour bar with 75% white) from the EXT terminal. 2. Select 2.V/C from the SERVICE MENU. 3. Select 6. HUE with the FUNCTION UP/DOWN key. 4. Set the initial setting value of NTSC 3.58 HUE with the FUNCTION - or + key. 5. Connect the oscilloscope between TP-47B and TP-E(#) 6. Adjust NTSC 3.58 HUE to bring the value of (B) in the illustration to -4V (voltage difference between white (W) and magenta (Mg)). 7. Press the MENU key and memorize the setting value
W
Cy
Mg
B
NTSC 4.43 HUE
[NTSC 4.43 HUE] 1. When NTSC 3.58 is set, NTSC 4.43 will be automatically set at the respective values.
No. 51776
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AV28WT5EPS
AV24WT5EPS
[Only AV28WT5EPS / AV24WT5EPS]
Item Adjustment of BLACK OFFSET (SECAM) Measuring instrument Remote control unit Test point Adjustment part 7. BLACK OFFSET (R-Y) *** (B-Y) *** Description [Method of adjustment without measuring instrument] 1. Receive a SECAM broadcast. 2. Select 2. V/C from SERVICE MENU. 3. Select 7. BLACK OFFSET with the FUNCTION UP/DOWN key. 4. Set the initial setting value for BLACK OFFSET (R-Y) and (BY) with 4 and 7 or 6 and 9 keys of the remote control. BLACK OFFSET ON BLACK OFFSET OFF R-Y 4 5 6 B-Y R-Y 7 8 9 B-Y 5. If the picture is not the best with the initial setting value, make fine adjustment until you get the best picture. 6. Press the MENU key and memorize the setting value.
REMOTE CONTROL UNIT
1
2
3
Adjustment of BLACK OFFSET (SECAM)
35 PIN (R-Y) 36 PIN (B-Y) IC-301 ON Oscilloscope MAIN PWB Remote control unit
Signal generator
7. BLACK OFFSET (R-Y) *** (B-Y) ***
[Method of adjustment using measuring instrument] 1. 2. 3. 4. 5. Receive a SECAM COLOUR bar signal (full field colour bar 75% white). Select 2. V/C from SERVICE MENU. Select 7. BLACK OFFSET with the FUNCTION UP/DOWN key. Connect the oscilloscope between 35 pin of IC-301 and TP-E (#). By using 4 and 7 keys of the remote control, adjust the BLACK OFFSET (R-Y) so that it becomes the waveform changes from (a) to (b) shown in the figure. 6. 7. Connect the oscilloscope between 36 pin of IC-301 and TP-E. By using 6 and 9 keys of the remote control, adjust the BLACK OFFSET (B-Y) so that it becomes the waveform changes from (c) to (d) shown in the figure. If the picture is not the best with the adjusted picture, make fine adjustment until you get the best picture. Press the MENU key and memorize the setting value.
[R-Y]
(a)
(b)
8. 9.
[B-Y]
(c)
(d)
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No. 51776
AV28WT5EPS AV28WT5EIS AV28WT5EKS
DEFLECTION CIRCUIT ADJUSTMENT
There are 7 modes of the adjustment ( 1 ) 50Hz mode ( PANORAMIC FULL REGULAR 14:9 ZOOM 16:9 ZOOM 16:9 ZOOM SUB TITLE ), ( 2 ) 60Hz mode ( each aspect mode ) depending upon the kind of signals ( vertical frequency 50Hz / 60Hz ). " The adjustment using the remote control unit is made on the basis of the initial setting values. " When the 50Hz PANORAMIC 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 setting values which adjust the screen to the optimum condition can be different from the initial setting values.
Initial setting value (1/2)
Setting item
(28" Model)
Initial setting value Adjustment name PANORAMIC 50Hz 60Hz -1 -3 +0 +4 +0 +0 -1 +0 +0 +0 +0 +0 +0 +0 +0 +0 14:9 ZOOM 50Hz +0 +16 +0 +0 -13 -1 -1 +0 +0 +0 +0 +118 +28 +0 +0 +0 60Hz +0 +15 +0 +1 -14 -1 +0 +0 +0 +0 +0 +119 +24 +0 +0 +0 16:9 ZOOM 50Hz +0 +36 +0 +0 -6 -1 -1 +0 +0 +0 +1 +0 +0 +0 +0 +0 60Hz +0 +34 +0 +0 -6 -1 +0 +0 +0 +0 +0 +0 +0 +0 +0 +0 16:9 ZOOM SUB TITLE 50Hz 60Hz +0 +38 +11 +0 -6 -1 -1 +0 +0 +4 +0 +0 +0 +0 +0 +0 +0 +36 +15 +0 -6 -1 +0 +0 +0 +0 +0 +0 +0 +0 +0 +0
1. V-SHIFT 2. V-SIZE 3. SUBTITLE 4. H-CENT 5. H-SIZE 6. EW-PIN 7. TRAPEZ 8. EW.COR.L 9. EW.COR.H 10.V.S-COR 11.V-LIN 12.H-BLK-R 13.H-BLK-L 14.V-EHT (Do not adjust) 15.H-EHT (Do not adjust) 16.EHT-GAIN (Do not adjust)
Vertical center Vertical height SUBTITLE BOTTOM Vertical Linearity Horizontal center Horizontal width Side pin correction Trapezoidal distortion correction CORNER PIN correction Low side CORNER PIN correction High side Vertical height correction Vertical Linearity BLANKING POSITION of Right side BLANKING POSITION of Left side V size correction level caused by EHT change H size correction level caused by EHT change Size correction gain caused by EHT change
+2 +6 -8 -8 +10 -23 +2 +0 +0 +4 -1 +0 +0 -4 -3 +0
Initial setting value (2/2)
Setting item 1. V-SHIFT 2. V-SIZE 3. SUBTITLE 4. H-CENT 5. H-SIZE 6. EW-PIN 7. TRAPEZ 8. EW.COR.L 9. EW.COR.H 10.V.S-COR 11.V-LIN 12.H-BLK-R 13.H-BLK-L 14.V-EHT (Do not adjust) 15.H-EHT (Do not adjust) 16.EHT-GAIN (Do not adjust) Adjustment name Vertical center Vertical height SUBTITLE BOTTOM Vertical Linearity Horizontal center Horizontal width Side pin correction Trapezoidal distortion correction CORNER PIN correction Low side CORNER PIN correction High side Vertical height correction Vertical Linearity BLANKING POSITION of Right side BLANKING POSITION of Left side Vsize correction level caused by EHT change Hsize correction level caused by EHT change Size correction gain caused by EHT change Initial setting value FULL REGULAR 50Hz 60Hz 50Hz 60Hz -1 -6 +0 +0 -6 -1 +0 +0 +0 +0 +0 +0 +0 +0 +0 +0 +0 -6 +0 +0 -6 +0 +0 +0 +0 +0 +0 +0 +0 +0 +0 +0 +0 -3 +0 +1 -22 +0 -1 +0 +0 +0 +0 +118 +31 +0 +0 +0 +0 -3 +0 +1 -23 +0 -1 +0 +0 +0 +0 +119 +25 +0 +0 +0
No. 51776
31
AV24WT5EPS AV24WT5EIS AV24WT5EKS
Initial setting value (1/2)
Setting item
(24" Model)
Initial setting value PANORAMIC 50Hz 60Hz -1 -3 +0 +5 +0 +1 -1 +0 +0 +0 +0 +0 +0 +0 +0 +0 14:9 ZOOM 50Hz +0 +14 +0 +0 -17 -3 -1 +0 +0 -0 +0 +116 +32 +0 +0 +0 60Hz +0 +14 +0 +1 -16 -4 -1 +0 +0 -0 +0 +118 +24 +0 +0 +0 16:9 ZOOM 50Hz +0 +36 +0 +0 -10 -3 -1 +0 +0 +0 +0 +0 +0 +0 +0 +0 60Hz +0 +35 +0 +0 -11 -2 -2 +0 -1 +0 +0 +0 +0 +0 +0 +0 16:9 ZOOM SUB TITLE 50Hz 60Hz +1 +33 +9 +0 -10 -4 -1 +0 +1 +0 -2 +0 +0 +0 +0 +0 +0 +35 +12 +0 -10 -5 -1 +0 +0 +0 -1 +0 +0 +0 +0 +0
Adjustment name
1. V-SHIFT 2. V-SIZE 3. SUBTITLE 4. H-CENT 5. H-SIZE 6. EW-PIN 7. TRAPEZ 8. EW.COR.L 9. EW.COR.H 10.V.S-COR 11.V-LIN 12.H-BLK-R 13.H-BLK-L 14.V-EHT (Do not adjust) 15.H-EHT (Do not adjust) 16.EHT-GAIN (Do not adjust)
Vertical center Vertical height SUBTITLE BOTTOM Vertical Linearity Horizontal center Horizontal width Side pin correction Trapezoidal distortion correction CORNER PIN correction Low side CORNER PIN correction High side Vertical height correction Vertical Linearity BLANKING POSITION of Right side BLANKING POSITION of Left side Vsize correction level caused by EHT change Hsize correction level caused by EHT change Size correction gain caused by EHT change
-10 +5 -8 -7 +14 -4 +1 +0 +0 -11 +0 +0 +0 -4 -3 +0
Initial setting value (2/2)
Setting item Adjustment name Initial setting value FULL REGULAR 50Hz 1. V-SHIFT 2. V-SIZE 3. SUBTITLE 4. H-CENT 5. H-SIZE 6. EW-PIN 7. TRAPEZ 8. EW.COR.L 9. EW.COR.H 10.V.S-COR 11.V-LIN 12.H-BLK-R 13.H-BLK-L 14.V-EHT (Do not adjust) 15.H-EHT (Do not adjust) 16.EHT-GAIN (Do not adjust) Vertical center Vertical height SUBTITLE BOTTOM Vertical Linearity Horizontal center Horizontal width Side pin correction Trapezoidal distortion correction CORNER PIN correction Low side CORNER PIN correction High side Vertical height correction Vertical Linearity BLANKING POSITION of Right side BLANKING POSITION of Left side Vsize correction level caused by EHT change Hsize correction level caused by EHT change Size correction gain caused by EHT change +0 -6 +0 +0 -10 -2 +0 +0 +0 +0 +0 +0 +0 +0 +0 +0 60Hz +0 -5 +0 +0 -11 -3 +0 +0 +0 +0 +0 +0 +0 +0 +0 +0 50Hz +0 -5 +0 +0 -30 -2 +0 +0 +0 +0 +0 +116 +33 +0 +0 +0 60Hz +0 -3 +0 +1 -30 -3 -1 +0 +0 +0 +0 +113 +24 +0 +0 +0
32
No. 51776
AV-28WT5EKS AV-24WT5EKS AV-28WT5EPS AV-24WT5EPS AV-28WT5EIS AV-24WT5EIS
Item Adjustment of V-SHIFT
Measuring instrument Signal generator Remote control unit
Test point
Adjustment part 1.V- SHIFT
Description [50Hz PANORAMIC mode] 1. Receive a circle pattern signal of vertical frequency 50Hz. 2. Select 4.DEF from the SERVICE MENU. 3. Select 1.V-SHIFT with the FUNCTION UP/DOWN key. 4. Adjust V-SHIFT to make A = B. 5. Press the MENU key and memorize the set value.
*
A
For JK chassis Set all data except for "PANORAMIC" to "0". Adjust V.CENTER of other aspects with "PANORAMIC" mode while also taking their positions into consideration. If you want to obtain horizontal lines with less noise on the screen, adjust V.LIN instead of "PANORAMIC" mode.
A
Adjustment of V-SIZE & SUBTITLE
2.V-SIZE 3.SUBTITLE
Screen size
Screen size
Picture size 100%
6. Receive a cross-hatch signal. 7. Select 2.V-SIZE and set the initial setting value. 8. Adjust V-SIZE and make sure that the vertical screen size of the picture size is in the bellow table. 9. Press the MENU key and memorize the set value. 10. When adjust the [SUBTITLE], select "3.SUBTITLE" and adjust to under part of picture size. 11. Input a NTSC VIDEO signal (60Hz) from the EXT terminal, and make sure that the vertical screen size is in the table below. 12. Press the MENU key and memorize the set value.
Picture size 100%
ASPECT MODE SCREEN TOP SCREEN BOTTOM
PANORAMIC 87% 87%
14 : 9 ZOOM 80% 80%
16 : 9 ZOOM 70% 70% [ SCREEN SIZE ]
16 : 9 ZOOM SUB TITLE 70% 83%
FULL 92% 92%
REGULAR 92% 92%
No. 51776
33
AV-28WT5EKS AV-24WT5EKS AV-28WT5EPS AV-24WT5EPS AV-28WT5EIS AV-24WT5EIS
Item Adjustment of H.CENTER
Measuring instrument
Test point
Adjustment part 4.H-CENT. 6. 7. 8. 9.
Description Receive a circle pattern signal. Select 4.H-CENT and set the initial setting value. Adjust H-CENT to make C=D. Press the MENU key and memorize the set value.
C
D
90%
90%
L
Adjustment of H.SIZE
5.H-SIZE
10. Receive a circle patteern signal. 11. Select 5.H-SIZE and set the initial setting value. 12. Adjust H-SIZE and make sure that the horizontal screen size of the picture size is in the bellow table. 13. Press the MENU key and memorize the set value. The numeric of the REGULAR and 14:9 ZOOM modes are shown the length of the 90% horizontal size position( L ) as shown in the figure above. 14. Input a NTSC VIDEO signal (60Hz) from the EXT terminal, and make sure that the horizontal screen size of the each ASPECT mode is in the below table. 15. Press the MENU key and memorize the set value.
ASPECT MODE 28" H SIZE 24"
PANORAMIC PAL=95% NTSC=94% PAL=95% NTSC=94%
14:9 ZOOM L=495mm
16:9 ZOOM 92%
16:9 ZOOM SUB TITLE 92%
FULL 92%
REGULAR L=440mm
L=425mm
92% [ SCREEN SIZE ]
92%
92%
L=380mm
Adjustment of EW-PIN Straight
6.EW-PIN
16. Select 6.EW-PIN and set the initial setting value 17. Adjust EW-PIN and make the 2nd.vertical lines at the left and right edges of the screen straight. Also make sure that the 3rd vertical lines are straight. 18. Press the MENU key and memorize the set value.
34
No. 51776
AV-28WT5EKS AV-24WT5EKS AV-28WT5EPS AV-24WT5EPS AV-28WT5EIS AV-24WT5EIS
Item Adjustment of TRAPEZ
Measuring instrument Signal generator Remote control unit Parallel
Test point
Adjustment part 7.TRAPEZ
Description 19. Receive a cross-hatch signal. 20. Select 7.TRAPEZ with the FUNCTION UP/DOWN key. 21. Set the initial setting value of TRAPEZ with the FUNCTION - or + key. 22. Adjust TRAPEZ and bring the VERTICAL lines at the right and left edges of the screen parallel . 23. Press the MENU key and memorize the set value.
Adjustment of EW. COR. L/H
Signal generator Remote control unit
8.EW. COR. L 9.EW. COR. H
Straight
Straight
24. Select 8.EW. COR. L with the FUNCTION UP / DOWN key. 25. Set the initial setting value of EW. COR. L with the FUNCTION or + key. 26. Adjust EW. COR. L, and bring the straight line at the low corner. 27. Select 9.EW. COR. H with the FUNCTION UP / DOWN key. 28. Set the initial setting value of EW. COR. H with the FUNCTION or + key. 29. Adjust EW. COR. H, and bring the straight line at the upper corner. 30. Press the MENU key and memorize the set value.
Adjustment of V-S.CR & V.LINEARITY
10. V-S.CR 11. V-LIN
%
When the vertical linearity has been deteriorated remarkably, perform the following steps.
TOP
CENTER
31. Receive a cross-hatch signal. 32. Select 11.V-LIN with the FUNCTION UP/DOWN key. 33. Set the initial setting value of 11.V-LIN with the FUNCTION - / + key. 34. Select 10.V-S.COR with the FUNCTION UP / DOWN key. 35. Set the initial setting value of 10.V-S.COR with the FUNCTION - / + key. 36. Adjust 11.V-LIN and 10.V-S.COR so that the spaces of each line on TOP, CENTER and BOTTOM become uniform. NOTE :Do not adjust "PANORAMIC" & "16 : 9 ZOOM SUBTITLE" mode. * For JK chassis On account of CRT (ITC), set V-S.COR except for "PANORAMIC" mode to the minimum. When adjusting "PANORAMIC" mode, slightly expand the space at the CENTER while taking the circularity at the CENTER into consideration.
BOTTOM
No. 51776
35
AV-28WT5EKS AV-24WT5EKS AV-28WT5EPS AV-24WT5EPS AV-28WT5EIS AV-24WT5EIS
Item
Measuring instrument
Test point
Adjustment part
Description At first the adjustment in 50Hz-PANORAMIC mode should be done, then the data for the other zoom mode is corrected in the respective value at the same time. And confirm the deflection adjustment initial setting value in 60Hz( NTSC EXT mode ) PANORAMIC mode. If the adjustment in 50Hz each zoom 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.
H. BLANKING ADJUSTMENT
Item Adjustment of H.BLANKING Measuring instrument Test point Adjustment part H.BLK Capacitor [On MAIN PWB] 1. 2. 3. 4. Description Receive the PAL circle pattern signal. Select 4.DEF from the SERVICE MENU. Select the aspect [14:9 ZOOM] mode. Select 12.H-BLK-R with the FUNCTION UP/DOWN key and adjust H-BLANKING so that 92% of the picture on the right side is displayed. 5. Select 13.H-BLK-L with the FUNCTION UP/DOWN key and adjust H-BLANKING so that 92% of the picture on the left side is displayed. 6. Press the MENU key and memorize the set value. 7. Select the aspect [REGULAR] mode. 8. Select 12.H-BLK-R with the FUNCTION UP/DOWN key and adjust H'.BLANKING so that 92% of the picture on the right side is displayed. 9. Select 13.H-BLK-L with the FUNCTION UP/DOWN key and adjust H-BLANKING so that 92% of the picture on the left side is displayed. 10. Press the MENU key and memorize the set value.
H
H'
36
No. 51776
AV-28WT5EKS AV-24WT5EKS AV-28WT5EPS AV-24WT5EPS AV-28WT5EIS AV-24WT5EIS
AUDIO CIRCUIT ADJUSTMENT
" Do not touch 3.AUDIO(1. CONC LIMIT, 2. A2 ID THR, 3. ALC, 4. BASS, 5. TREBLE) of the SERVICE MENU as it requires no adjustment. 3. AUDIO Setting item Variable range fixed value
1. CONC LIMIT(Do not adjust)
00H FFH
0AH
2. A2 ID THR(Do not adjust)
00H FFH
19H
3. ALC (Do not adjust)
20MSEC
2SEC
4SEC
8SEC
4. BASS (Do not adjust)
-17 +17
+0
5. TREBLE (Do not adjust)
-17 +17
+0
No. 51776
37
AV-28WT5EKS AV-24WT5EKS AV-28WT5EPS AV-24WT5EPS AV-28WT5EIS AV-24WT5EIS
38
No. 51776
VICTOR COMPANY OF JAPAN, LIMITED HOME AV NETWORK BUSINESS UNIT 1106 Heta, Iwai-city, Ibaraki-prefecture, 306-0698, Japan
4
AV28WT5EPS-U #4 AV24WT5EPS-U #4 AV28WT5EIS-U #4 AV24WT5EIS-U #4 AV28WT5EKS-U #3 AV24WT5EKS-U #3
Printed in Japan VP 0101 DP2051