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AV32 X25EUS / AV32X250EUS AV32 X25EIGY / AV32X25EKG Y AV28 X25EUS / AV28X25EIGY AV28X25EKG Y
SERVICE MANUAL
COLOUR TELEVISION
BASIC CHASSIS
AV32X25EUS / AV32X250EUS AV32X25EIGY / AV32X25EKGY AV28X25EUS / AV28X25EIGY AV28X25EKGY
MF
CONTENTS
! ! ! ! ! ! ! ! SPECIFICATIONS 2 SAFETY PRECAUTIONS 4 FEATURES 6 MAIN DIFFERENCE LIST 6 FUNCTIONS 7 SPECIFIC SERVICE INSTRUCTIONS 8 SERVICE ADJUSTMENTS 14 PARTS LIST 33 OPERATING INSTRUCTIONS STANDARD CIRCUIT DIAGRAM 2-1
1
CO PYRIGHT © 2002 VICTOR COMPANY OF JAPAN, LTD.
No.51994 Jun. 2002
AV32X25EUS / AV32X250EUS AV32X25EIGY / AV32X25EKGY AV28X25EUS / AV28X25EIGY AV28X25EKGY
SPECIFICATIONS
Content Item AV32X25EUS / AV32X250EUS / AV28X25EUS (32") : 85.5cm×55.0cm×56.8c m (28") : 78.0cm×50.9cm×49.9c m Mass TV RF System Colour System Stereo System Teletext System Receiving Frequency (32") : 54.2kg / (28") : 40.2kg CCIR ( B/G, D/K, L, L',I) PAL / SECAM / NTSC (Only in EXT mode) A2 (B/G, D/K) / NICAM (B/G, I, D/K, L) Fastext (UK system) / TOP (German system) WST(world s tandard system) VHF : 47MHz 470MHz UHF : 470MHz 862MHz · French c able TV c hannel of broadcas t frequencies 116 172MHz & 220 469MHz Intermediate Fr equency VIF Carrier : 38.9MHz(B/G, D/K, I, L) / 33.95MHz SIF Carrier : 33.4MHz(5.5MHz : B/G) 32.9MHz(6.0MHz : I ) 32.4MHz(6.5MHz : L, D/K) 40.45MHz (6.5MHz : L') Colour Sub Carr ier Fr eq. PAL : 4.43MHz SECAM : 4.40625MHz / 4.25MHz NT SC : 3.58MHz / 4.43MHz Power Input Power Consumption Aerial Input Term Pictur e Tube AC 220V240V , 50Hz (32") 132W (Avg)
187W (Max)
AV32X25EIGY / AV28X25EIGY AV32X25EKGY / AV28X25EKGY (32") : 85.5cm×55.0cm× 56.8cm (28") : 78.0cm×50.9cm× 49.9cm (32") : 54.2kg / (28") : 40.2kg CCIR ( I ) PAL / NTSC (Only in EXT mode) NICAM ( I ) Fastext (UK system) WST(world s tandard system) VHF : 47MHz 470MHz ( EI model ) UHF : 470MHz 862MHz ( EK / EI model )
Dimensions ( W×H×D ) × ×
VIF Carrier : 38.9MHz SIF Carrier : 32.9MHz (6.0MHz )
PAL : 4.43MHz
NT SC : 3.58MHz / 4.43MHz
(28") 125W (Avg)
178W (Max)
(32") 132W (Avg)
187W (Max)
(28") 125W (Avg)
178W (Max)
75unbalanc ed, Coaxial (32") : Viewable area 76cm ( meas ured diagonally) (28") : Viewable area 66cm ( meas ured diagonally) + 1.0kV 31.0kV -1. 5kV (at zero beam c urrent) 13cm×6.5cm, Oval type×2 7.5W + 7.5W 21-pin Euro c onnector (SCART socket) ×3 Video : Vp-p 75(RCA pin jack) Au dio (L/R) : 500mVrms(-4dBs), High Impedance (RCA pin jac k) S / Video Y : 1Vp-p POSITIVE (Negative sync Provided, when terminated with 75) C : 0.3Vp-p (Burst signal, when terminated with 75) (32") : Viewable area 76cm ( meas ured diagonally) (28") : Viewable area 66cm ( meas ured diagonally)
High Voltage Speaker Au dio Output EXT-1/EXT-2/EXT-3 (IN/OUT) EXT-4 (Input)
AUDIO OUT (Variable) Headphone jack Remote Contr ol Unit
01Vrms, Low Impedance (RCA pin jack×2) Stereo mini jac k ( 3.5mm ) RM-C54 (AAA/R03 dry cell battery×2) RM-C55 (AAA/R03 dry cell battery×2)
Design & specifications are subject to change without notice .
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No.51994
AV32X25EUS / AV32X250EUS AV32X25EIGY / AV32X25EKGY AV28X25EUS / AV28X25EIGY AV28X25EKGY
21-pin Euro connector (SCART socket) : EXT-1 / EXT-2 / EXT-3
(P-P= Peak to Peak, B-W= Blanking to white peak)
Pin No . 1 Signal Designation AUDIO R output Matching Value 500mVrms(Nominal), Low impedanc e 500mVrms(Nominal), High impedance 500mVrms(Nominal), Low impedanc e EXT-1 (TV OUT) (TV OUT) 500mVrms(Nominal), High impedance 700mVB-W , 75 Low : 0-3V, High : 8-12V, High impedanc e EXT-2 (LINE OUT) (LINE OUT) EXT-3
NC NC NC
2 3
AUDIO R input AUDIO L output
4 5 6 7 8 9 10 11 12 13 14 15
AUDIO GND GND (B) AUDIO L input B input FUNCTON SW (SLOW SW) GND (G) SCL3 G input SDA3 GND (R) GND (YS ) R / C input R : 700mVB-W , 75 C : 300mVP-P , 75 700mVB-W , 75
NC NC (only R) 1V P-P(Negative going sync ), 75 1V P-P(Negative going sync ), 75 (TV)
NC NC NC NC (only C)
16 17 18 19
Ys input GND(VIDEO output) GND(VIDEO input) VIDEO output
Low : 0 - 0.4, High : 1 - 3V, 75
(LINE OUT)
NC NC
20 21
VIDEO / Y input COMMON GND
[Pin assignment]
No.51994
3
AV32X25EUS AV32X250EUS AV28X25EUS
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 identic al to thos e used in the original circuits. Service should be performed by qualified pers onnel 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. T hese 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 whic h have these special s afety characteristics are identified in the parts list of Servic e manual. Electrical components having su ch features ar e identified by shading on the schematics and by (! ) on the parts list in Service ! manual. The us e of a substitute replacement which does not have the same safety characteristics as the recommended replac ement part shown in the parts list of Service manual may cause shock, fire, or other hazards . 4. Do n't shor t between the LIVE side ground and ISOL ATED (NEUTRAL) side ground or EARTH side ground when repairing. Some model's power circuit is partly different in the GND. The differenc e 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 s ame 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 k ept to a minimum, or should be prevented. If s evere arc ing 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, c omponents in the high voltage circuitry including the picture tube must be the exact replacements or alternatives approved by the manufacturer of the c omplete product. 7. Do not c hec k high voltage by drawing an arc. Use a high voltage meter or a high v oltage probe with a VTVM. Discharge the picture tube before attempting meter connection, by c onnecting a clip lead to the ground frame and c onnecting 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 prec aution should be given to assure correct lead dress in the high voltage circuit area. W here a s hort circuit has occurred, those components that indicate evidence of overheating should be replaced. Always use the manufacturer's replacement components.
AV32X25EUS / AV32X250EUS / AV28X25EUS
9. Isolation Check (Safety for Electrical Shock Hazard) After re-ass embling 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 s afe to operate without danger of electrical shoc k. (1) Dielectric Strength Test The isolation between the AC primary circuit and all metal parts exposed to the us er, particularly any expos ed metal part having a return path to the chass is should withs tand a voltage of 3000V AC (r.m.s.) for a period of one sec ond. (. . . . Withstand a voltage of 1100V AC (r.m.s.) to an applianc e 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 servic e trade. (2) Leakage Current Check Plug the AC line c ord 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 expos ed 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 tropic al area, this must not exceed 0.2mA AC (r.m.s.). " Alternate Check Method Plug the AC line c ord 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 sens itivity in the following manner. Connec t a 1500 10W res istor paralleled by a 0.15µF AC-type c apacitor between an exposed metal part and a known good earth ground (water pipe, etc.). Meas ure the AC voltage across the res istor with the AC voltmeter. Move the resistor connec tion to each exposed metal part, particularly any exposed metal part having a return path to the chassis, and measure the AC voltage ac ross the res istor. Now, reverse the plug in the AC outlet and repeat eac h measurement. Any voltage measured must not exc eed 0.75V AC (r.m.s.). This c orresponds 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 VOLT MET ER (HAVING 1000 /V, OR MOR E SENSIT IVITY)
0.15F AC-T YPE PLACE T HIS PROBE ON EACH EXPOSED MET AL PART
1500 10W GOOD EARTH GROUND
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No.51994
AV32X25EIGY / AV32X25EKGY AV28X25EIGY / AV28X25EKGY
SAFETY PRECAUTIONS
1. The design of this product c ontains 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 identic al to thos e used in the original circuits. Service should be performed by qualified pers onnel only. 2. Alterations of the design or circ uitry 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. Thes e characteristics are often not evident from visual inspection nor c an the protection afforded by them necess ary be obtained by using replac ement c omponents rated for higher voltage, wattage, etc. Replacement parts whic h
AV32X25EIGY / AV32X25EKGY AV28X25EIGY / AV28X25EKGY have these special safety c harac teristic s are identified in the Parts List of Service Manual. Electrical components having suc h features are identified by shading on the schematic s and by ( !) on the Parts List in the Service Manual. The use of a substitute replac ement which does not have the s ame 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 s eparated 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 thes e s afety standards are maintained. Repairs must be made in acc ordance with the relevant safety standards . It is essential that safety critical c omponents are replac ed by approved parts. If mains voltage selec tor is provided, check s etting for local voltage.
No.51994
5
AV32X25EUS / AV32X250EUS AV32X25EIGY / AV32X25EKGY AV28X25EUS / AV28X25EIGY AV28X25EKGY
FEATURES
" New chassis design enable us e of an interac tive on screen control. " The TELETEXT SYSTEM has a built-in FASTEXT (UK system), TOP (German system) and WST (world standard s ystem) system. " Becaus e this TV unit corresponds to multiplex broadcast, users can enjoy music programs and s porting events with live realism. In addition, BILINGUAL programs can be heard in their original language. " Users can make VCR dubbing of picture and sound by controlling the AV selector to s elect an optional s ource at the EXT-2 output shown in figure.
TV
EXT-1
EXT-3
EXT-4
EXT-2
MAIN DIFFERENCE LIST
Model Name ! Part Name MAIN PWB ASSY POWER & DEF PWB ASSY CRT SOCKET PWB ASSY FRONT CONTROL PWB ASSY SIDE CONTROL PWB ASSY ! ITC TUBE ! DEGAUSSING COIL ! ROTATION COIL ! FBT ! REAR COVER CUSHION ASSY PACKING CASE CORNER POST AV32X25EUS AV32X250EUS AV32X25EIGY SMF-1404A-U2 SMF-2404A-U2 SMF-3404A-U2 SMF-8404A-U2 SMF-8104A-U2 W76ERF042X044 QQW0066-001 QQW0130-001 QQH0127-001 LC11316-001A-U LC11373-002A-U AEM1002-079-E QQH0126-001 LC11282-001C-U LC11318-002A-U AEM1002-A76-E AEM3119-003A-E AV32X25EKGY SMF-1944A-U2 AV28X25EUS AV28X25EIGY SMF-1403A-U2 SMF-2403A-U2 SMF-3403A-U2 SMF-8403A-U2 SMF-8103A-U2 W66QDE993X925 QQW0100-001 AV28X25EKGY SMF-1943A-U2
!
Model Name Part Name
AV32X25EUS AV32X250EUS LC11360-004A-U QMPK160-185-JC LC41250-002C-C RM-C54H-1C
AV32X25EIGY AV32X25EKGY LC11360-003A-U QMPN130-185-JC LC41250-001C-C RM-C55H-1C
AV28X25EUS LC11313-004B-U QMPK160-185-JC LC41250-002A-C RM-C54H-1C
AV28X25EIGY AV28X25EKGY LC11313-003B-U QMPN130-185-JC LC41250-001C-C RM-C55H-1C
! FRONT CABINET ASSY ! POWER CORD JVC MARK REMOTE CONTROL UNIT
Model Name ! Part Name
AV 32X 25EU S AV32X 250EUS AV 32X 25EIG Y AV32X 25E KGY AV 28X 25EU S AV 28X 25EIG Y AV28X 25E KGY
! INST BOOK ! RATING LABEL EURO LABEL ! WARNING LABEL
LCT1184-001A-U LCT1185-001A-U LCT1185-001A-U LCT1187-001A-U LCT1186-001A-U
LCT1184-001A-U LCT1185-001A-U LCT1187-001A-U LCT1186-001A-U
LC11414-003A-U LC11372-004A-U LC11364-008A-U LC11364-007A-U LC11414-004A-U LC11364-010A-U LC11364-009A-U AEM1064-017-U AEM1064-020-U AEM1064-019-U AEM1064-018-U AEM1064-021-U AEM1064-023-U AEM1064-022-U LC30789-002B-U LC30789-002B-U
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No.51994
FUNCTIONS
(FRONT) (SIDE)
AV32X25EUS / AV32X250EUS AV32X25EIGY / AV32X25EKGY AV28X25EUS / AV28X25EIGY AV28X25EKGY
4
5 6 1 2 3
7
Remote control sensor Power lamp Main power button Headphone jac k (mini jac k)
P / buttons / -/+ buttons (Volume) button EXT-4 terminal
(REAR PANEL)
2 3
(REMOTE CONTROL UNIT)
1 2 8
3 4 5 6 7 5 4 13 9 10 11 12
1
EXT-1(IN/OUT) Terminal EXT-2(IN/OUT) Terminal EXT-3(IN/OUT) Terminal Aerial Sock et Audio out put terminal
No. 51994
Muting Key Number Key ZOOM Key Hyper Sound Key Information Key TV Key Volume -/+ Key
Standby (power) Key Colour Key TEXT Key K/MENU Key PR Channel /Key FUNCTION ( + / - / P / P) Key
7
AV32X25EUS / AV32X250EUS AV32X25EIGY / AV32X25EKGY AV28X25EUS / AV28X25EIGY AV28X25EKGY
SPECIFIC SERVICE INSTRUCTIONS
DISASSEMBLY PROCEDURE
REMOVING THE REAR COVER
1. Unplug the power c ord. 2. Remove the 13 screws marked A as s hown in the Fig. 1. 3. Withdraw the rear cover toward you.
REMOVING THE SPEAKER
" After removing the rear cover. 1. Remove the 2 screws marked E, and remove the speaker holder as s hown in Fig. 1. NOTE : When removing the screws marked E of the speaker holder remove the lower side screw first, and then remove the upper one. 2. Remove the 2 screws F attaching the speaker. 3. Follow the s ame steps when removing the other hand speaker.
REMOVING THE SIDE CONTROL JACK ASSEMBLY
" After removing the rear cover. 1. Remove the screw marked B as shown in the Fig.1. 2. While slightly raise the side c ontrol jack assembly, remove the 2 claws under the side control jac k assembly. 3. Disc onnect the c onnector "SR ", "SL", "S", "F" and "CN016" as shown in Fig 2.
REMOVING THE AV TERMINAL BOARD
" After removing the rear cover. 1. Remove the 3 screws marked G as shown in the Fig. 1. 2. Remove the 2 claws marked H under the CHASSIS as shown in Fig. 3. 3. Remove the AV TERMINAL BOARD slightly in the direction of arrow I as shown in Fig. 3.
REMOVING THE SIDE CONTROL PWB
" After removing the rear cover and side control jac k ass embly. 1. Remove the 3 claws C from back side of the side control jack assembly as s hown in Fig.2. 2. Pull out the SIDE CONTROL PWB.
CHECKING THE PW BOARD REMOVING THE CHASSIS
" After removing the rear cover. 1. Slightly raise the both sides of the c hassis by hand and remove the two claws under the both sides of the chassis from the front cabinet. 2. Withdraw the chass is backward. (If necess ary, take off the wire clamp, connectors etc.) To check the back side of the PW Board. 1) Pull out the chassis . (Refer to REMOVING THE CHASSIS). 2) Erect the c hassis vertically so that you c an easily check the back side of the PW Board. [CAUTION] " When erec ting the chassis, be careful s o that there will be no contacting with other PW Board. " Before turning on power, make sure that the wire connector is properly connec ted. " When conducting a check with power supplied, be sure to c onfirm that the CRT EARTH WIRE (BRAIDED ASS'Y) is connected to the CRT SOCKET PW board.
REMOVING THE POWER & DEF. PWB
" After removing the CHASSIS. 1. Remove the 3 screws marked D as shown in the Fig.1. 2. Remove the POWER & DEF. PWB upper. (If necess ary, take off the wire c lamp, connectors , etc.)
WIRE CLAMPING AND CABLE TYING
1. Be sure to clamp the wire. 2. Never remove the c able tie used for tying the wires together. Should it be inadvertently removed, be sure to tie the wires with a new c able tie.
I
Connector SR SL S F CN016 SIDE CONT ROL PWB
AV SW PWB
C
AV TERMINAL BOARD
H
C
(Back view)
H Fig. 3 No.51994
Fig. 2 8
AV32X25EUS / AV32X250EUS AV32X25EIGY / AV32X25EKGY AV28X25EUS / AV28X25EIGY AV28X25EKGY
FRONT CABINET
E (×2)
SPEAKER HOLDER
F (×2) D (×3)
CRT SOCKET PWB SIDE SPEAKER POWER & DEF. PWB MICOM PWB CLAW
CHASSIS FRONT CONT ROL PWB CONT ROL BASE CLAW MAIN PWB 100Hz PWB AV TERMINAL BOARD
Fig.2
B
AV SW PWB
G
(×3)
SIDE CONTROL JACK ASSEMBLY POWER CORD
REAR COVER
A
( ×13)
This exploded view describes about 32" models. Although 28" models are slightly different from this figure, you can use the exploded view for disass embling the 28" models in same step as 32" models.
Fig. 1 No.51994 9
AV32X25EUS / AV32X250EUS AV32X25EIGY / AV32X25EKGY AV28X25EUS / AV28X25EIGY AV28X25EKGY
REMOVING THE CRT
Replacement of the CRT should be performed by 2 or more pers ons. · After removing the c over, chassis etc., 1. Putting the CRT c hange table on soft cloth, the CRT change table should also be c overed with s uch soft cloth (shown in Fig.8). 2. While keeping the s urfac e of CRT down, mount the TV s et on the CRT change table balanced will as shown in Fig.9. 3. Remove 4 sc rews marked by arrows with a box type screw driver as s hown in Fig.9. · Sinc e 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 surfac e of the c abinet) shown in Fig.10. · The CRT should be ass embled according to the opposite sequence of its dismounting steps. The CRT change table should preferably be smaller that the CRT surfac e, and its height be about 35c m. CRT CHANGE TABLE
APPROX. 35cm
CLOTH
Fig. 8
CRT
CRT CHANGE TABLE BOX TYPE SCREW DRIVER
Fig. 9
CRT
CABINET
CRT CHANGE TABLE
Fig. 10
10
No. 51994
AV32X25EUS / AV32X250EUS AV32X25EIGY / AV32X25EKGY AV28X25EUS / AV28X25EIGY AV28X25EKGY
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 c hip part, melt the s older adequately. Do not reuse a chip part after removing it.
! SOLDERING IRON
1. Use a high ins ulation s oldering iron with a thin pointed end of it. 2. A 30w s oldering iron is rec ommended 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 indic ated in the figure.
(2) Shift with tweezers and remove the chip part.
(2) Grasp the chip part with tweezers and plac e it on the s older. Then heat and melt the solder at both ends of the chip part.
# Transistors, diodes, variable r esistor s, etc (1) Apply extra solder to each lead.
# Transistors, diodes, variable r esistor s, etc (1) Apply solder to the pattern as indic ated in the figure. (2) Grasp the chip part with tweezers and place it on the solder. (3) First s older lead A as indicated in the figure.
SOLD E R
SOLD E R
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.51994
11
AV32X25EUS / AV32X250EUS AV32X25EIGY / AV32X25EKGY AV28X25EUS / AV28X25EIGY AV28X25EKGY
REPLACEMENT OF MEMORY ICs
1. Memory ICs
This TV us e memory ICs. In the memory ICs, there are memorized data for correctly operating the video and deflection circuits . When replacing memory ICs, be s ure to us e 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.
SE RV ICE MEN U 1. IF 3. AUDIO 5. VSM PRESET 7. P IP 9. SHIPPING (OFF) 1-9 : SELECT 2. V/C 4. DEF 6. STATUS 8.--0. BUS FREE i : EXIT
(2)
Replace ICs. Be sure to use memory ICs written with the initial data values.
(3)
Power on Plug the power c ord into the outlet and switch the power on.
Fig.1
(4)
Check and set SYSTEM CONSTANT SET :
* It must not adjust without signal.
1) Press the INFORMATION key and the MUTING key of the REMOTE CONTROL UNIT simultaneous ly. 2) The SERVICE MENU screen of Fig. 1 will be displayed. 3) While the SERVICE MENU is dis played, pres s the INFORMATION key and MUTING key s imultaneously, and the SYSTEM CONSTANT SET screen of Fig. 2 will be display ed. 4) Check the setting values of the SYSTEM CONSTANT SET of Table 1. If the value is different, select the s etting item with the FUNCTION UP/DOWN key, and s et the c orrect 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.
SYS TEM C ONS TA NT S ET 1. DESTINATION EU
- /+
OK
: STORE
i : EXIT
Fig.2
NAME OF REMOTE CONTROL KEY (5) Setting of receive channels Set the rec eive channel. For setting, refer to the OPERATING INSTRUCTIONS. Names of key INFORMATION MUTING key
i
(6)
User settings Check the us er setting values of Table 2, and if setting value is different, set the c orrec t value. For setting, refer to the OPERATING INSTRUCTIONS.
MENU
OK
(7)
FUNCTION -/+
12
No. 51994
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
AV32X25EUS / AV32X250EUS AV32X25EIGY / AV32X25EKGY AV28X25EUS / AV28X25EIGY AV28X25EKGY
SETTING VALUES OF SYSTEM CONSTANT SET (TABLE 1)
Setting item Setting content Setting value
AV32 X25EU S AV32 X25 0EUS AV28 X25EU S AV32 X25EK GY AV28 X25EK GY AV32 X25EIGY AV28 X25EIGY
Setting item
Setting content NO NO NO NO NO NO NO YES YES YES YES YES YES YES
Setting value NO NO YES NO NO NO YES
EU PIC&TEXT EK EI DOLBY BBE PROGRESSIVE TDA9178 TONE IC FLAT
DESTINATION
EU
EK
EI
CRT TYPE PURITY PICTURE TILT DIGIPURE PRO PIP NO
16:9 NO NO NO 1TUNER
4:3 YES YES YES 2TUNER
16:9 NO YES NO NO
USER SETTING VALUES (TABLE 2)
TINT CONTRAST / BRIGHT SHARP / COLOUR DIGITAL VNR PICTURE SETTING COOL REFER to VSM PRESET PICTURE FEATURES AUTO ID S-IN DUBBING EXT SETTING BLANK BLANK EXT-1EXT-2 FEATURES OFF ON
SLEEP TIMER BLUE BACK
COLOUR SYSTEM 4:3 AUTO ASPECT
TV : According to preset CH EXT : AUTO PANORAMIC SOUND SET TING CENTER OFF ON LANGUAGE EDIT/MANUAL INSTALL ENGLISH PRESET CH only The others : BLANK
BASS / TREBLE / BALANCE HYPER SOUND BBE
SERVICE MENU SETING ITEMS (TABLE 3)
Setting item 1. IF Setting value 1. VCO 2. ATT ON/OFF 1. RGB BLK 2. WDR R 3. WDR G 4. WDR B 5. BRIGHT 6. CONTRAST 7. COLOUR 8. HUE 9. SHARP 10. VCO ADJ . 11. VID AGC 12. SYC SLI 13. A MOVIE 1. ERR LIMIT 2. A2 ID THR 3. Q-PEAK ON/OFF 6.STATUS (Do not adju st) Setting item 1. V-SHIFT 2. V-SIZE 3. H-CENT 4. H-SIZE 5. TRAPEZ 6. EW-PIN 7. COR-PIN 8. COR-UP 9. COR-LO 10. ANGLE 11. BOW 12. V-S.CR 13. V-LIN 1. CONT. 2. BRIGHT 3. SHARP 4. COLOUR 5. HUE 6. WDR R 7. WDR G 8. WDR B VPS PDC Setting value
4. DEF.
2. V / C
3.AUDIO (Do not adjust) 9.SHIPPING (Do not adjust)
5. VSM PRESET COOL NORMAL WARM
No. 51994
: Do not adjust 13
AV32X25EUS / AV32X250EUS AV32X25EIGY / AV32X25EKGY AV28X25EUS / AV28X25EIGY AV28X25EKGY
SERVICE ADJUSTMENTS
BEFORE STARTING SERVICE ADJUSTMENT
1. There ar e 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 th e initial setting values. The setting values which adjust the screen to the optimum condition can be differ ent fr om the initial setting values. 3. Make s ure that connection is c orrectly made to AC power sourc e. 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 rec eive or input signal is not specified, use the most appropriate s ignal for adjustment. 6. Never touch parts (such as variable resistors, transformers and condensers) not shown in the adjustment items of this servic e adjustment. 7. Preparation for adjustment (pres etting): Unless otherwis e specified in the adjustment items, preset the following functions with the REMOTE CONTROL UNIT. " Setting position
PICT URE MODE (VSM) SLEEP T IMER T ONE BALAN CE ZOOM NORMAL OF F CENTER FULL
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
Check ing items. Adjustment of FOCUS & SCREEN VSM preset adjust s etting. VIDEO / CHROMA circ uit adjustment. DEFLECTION c ircuit adjustment. AUDIO circuit adjustment. (Do not adjust)
14
No. 51994
AV32X25EUS / AV32X250EUS AV32X25EIGY / AV32X25EKGY AV28X25EUS / AV28X25EIGY AV28X25EKGY
ADJUSTMENT LOCATIONS
SIDE CONTROL PWB
TOP
H EAD PH O NE S- IN SR
FRONT
FRONT CONTROL PWB
SL
S
UP F 8 9 01 W C N0 0 1 D OW N PW PO W ER SW
E X T 4
F
C N0 1 6 M EN U
FRONT
FRONT
MAIN PWB
C N0 0 2 W
POWER&DEF PWB
D EG
C N0 0 4
M ICOM AV SE L PW B
C N0 0 5
CRT SOCKET PWB
CN001 T U NE R
100Hz
HV
HVT
X
1
C N0 0 6
C N0 1 4 C N0 1 3
5
TOP (SOLDER SIDE)
E1 T P- 4 7 B T P- E F O C US SC R EEN
1 p in : B 1( T P- 9 1 ) 2 p in : N C 3 p in : X- ra y 4 p in : X- ra y 5 p in : T P- E
28"MODEL
F O C US 1 F O C US 2 C N0 1 4 SC R EEN
C N0 1 3
T P- Y
32"MODEL
No. 51994
15
AV32X25EUS / AV32X250EUS AV32X25EIGY / AV32X25EKGY AV28X25EUS / AV28X25EIGY AV28X25EKGY
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 (adjus tments ): (1) 1. IF (2) 2.V/C (3) 3.AUDIO (4) 4.DEF
settings (adjustments) c an be made, and they are broadly c lassified 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 multiplic ity SOUND circuit. This mode adjusts the setting values of the DEFLECTION circuit for eac h as pect mode given below. FULL (100/120Hzi) PANORAMIC (100/120Hzi) SUBTIT LE (100/120Hzi) COMPRESS (Fixed value) (100/120Hzi) (5) 5.VSM PRESET This mode adjusts the initial s etting values of COOL, NORMAL and WARM. (VSM : Video Status Memory)
3. BASIC OPERATION OF SERVICE MENU (1) Ho w to enter SERVICE MENU Press the "INFORMATION" key and the "MUT ING" key of the REMOTE CONTROL UNIT simultaneous ly, and the SERVICE MENU screen of Fig.1 will be dis played.
SERVICE MENU
SE RVIC E ME N U 1. IF 3. AUDIO 5. VSM PRESET 7. PIP 9. SHIPPING (OFF) 1-9 : SELECT 2. V/C 4. DEF 6. ST ATUS 8. --0. BUS FREE i : EXIT
Fig.1
FUNCTION UP/DOWN
FUNCTION -/+ : Do not adjust Fig.2
16
No. 51994
(2) Selection of SUB MENU SCREEN Press one of keys 15 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. STATUS 7. PIP 8. --9. SHIPPING (OFF) 0. BUS FREE
NAME OF REMOTE CONTROL KEY Names of key INFORMATION MUTING OK key
i
MENU
AV32X25EUS / AV32X250EUS AV32X25EIGY / AV32X25EKGY AV28X25EUS / AV28X25EIGY AV28X25EKGY
SERVICE MENU
SERVICE MENU 1. I F 3. A UDIO 5. V S M PRE S E T 7. P IP (O FF) 9. S HIP P ING (OF F) 2. V /C 4. DE F 6. S TA TUS 8. - - 0. B US F REE
1-9 : S ELE CT i : E X IT
4. DEF
1.IF(V CO) IF S ER VICE M ENU
1. V- SHIFT 2. V- SIZE 3. H-CE NT 4. H-S IZE 5. TRAP EZ 6. EW -P IN 7. COR-P IN 8. COR-UP 9. COR-L O 10. A NGLE 11. B OW 12.V- S.CR 13.V- LIN
DE F 1. V-SHIFT
*** Hz
FULL ***
1. VCO 2. AT T ON/OFF
Do no t move
- / + OK
: STORE
i
: EXIT
1-2 : SELECT
i
: EXIT
2. V/C
V /C 1. RGB_BLK
P AL ****
- / + OK
: STORE
i
: EXIT
1. RGB BLK 2. WDR R 3. WDR G 4. WDR B 5. BRIGHT 6. CONTRAS T 7. COLO UR 8. HUE 9. SHARP 10. V CO ADJ 11. V ID AGC 12. S Y C SL I 13. A M O VIE
Do no t adjust 5. VS M PRE S E T 3. AUDIO AUDIO V SM P RE SE T CO OL NO RMAL W AR M 1. 2. 3. 4. 5. 6. 7. 8. CONT. BRIGHT SHARP COLO UR HUE WDR R WDR G WDR B 1.CONT NORM AL *** 1. ERR LIMIT 100H
ERROR RATE = ********
1. ERR L IM IT 2. A2 ID THR 3. Q P EAK
- / + OK
: STORE
i
: EXIT
- / + OK
: STORE
i
: EXIT
Fig.3 SUB MENU SCREEN
No. 51994 17
AV32X25EUS / AV32X250EUS AV32X25EIGY / AV32X25EKGY AV28X25EUS / AV28X25EIGY AV28X25EKGY
(3) Method of Setting 1) Method of Setting 1.IF [VCO] It mus t not adjust without signal. 1 Key Select 1.IF. 1 Key Select 1.VCO(CW) Make sure that the arrow position between the ABOVE REF and BELOW REF. INFORMATION Key Return to the SERVICE MENU screen.
2) Method of s etting 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 / DOWN ( / ) Key Select s etting items. FUNCTION -/+ ( / ) Key Set (adjust) the setting values of the setting items. MENU Key Memorize the s etting value. (Before storing the setting values in memory, do not pres s the CH, TV, POWER ON / OFF key - if you do, the values will not be stored in memory.) INFORMATION Key Return to the SERVICE MENU screen.
3)
Do not setting 6.STATUS, 7.PIP, 8.--- , 9.SHIPPING(OFF) & 0.BUS FREE.
(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. 51994
AV32X25EUS / AV32X250EUS AV32X25EIGY / AV32X25EKGY AV28X25EUS / AV28X25EIGY AV28X25EKGY
ADJUSTMENTS
CHECK ITEM
Item B1 Power Supply check Measuring instrument Signal generator Test point Ad justment part 1. 2. 3. 4. 5. Description Receive a any broadcast. Push the "ZOOM" key and s elect the FULL mode. Select 2. V/C from the SERVICE MENU. Select 1. RGB BLK with function UP / DOWN ( / ) key. Press the function + ( ) key to find the cut off screen (Black screen). 6. Connect a DC voltmeter to TP-91(B1) and TP-E(#). 7. Make sure that the voltage is DC139.9 ±2.0V. 8. Press the function ( ) key to return to service menu.. Receive a any broadcast. Push the "ZOOM" key and s elect the FULL mode. Select 2. V/C from the SERVICE MENU. Select 1. RGB BLK with function UP / DOWN ( / ) key. Press the function + ( ) key to find the cut off screen (Black screen). 6. Connect a DC voltmeter to CRT ANODE and chassis GND. +1kV 7. Make sure that the voltage is DC 31.0kV -1.5kV . 8. Press the function ( ) key to return to service menu. " " 1. 2. 3. 4. Under normal c onditions, no adjustment is required. Confirmation adjustment. Select 1.IF from the SERVICE MENU. Then select 1.VCO from the IF SERVICE MENU. Receive any broadc ast. Check the arrow ( ) position between the ABOVE REF. and BELOW REF. 1. 2. 3. 4. 5.
TP-91(B1) 1.RGB BLK TP-E(#) # [X connector DC voltm eter on POWER DEF PWB] Remote control unit
High Voltage check
Signal generator DC volunteer Remote control unit
CRT anode
1.RGB BLK
Chassis GND
VCO check
Remote control unit
1. VCO
IF SE RVICE ME NU 1. VCO 2. AT ON/O T FF
(Do not move)
1-2 : SELECT
i : EXIT
VCO (CW) MA IN T OO HIG H AB OVE REF JUST REF BELO RE W F T OO LOW
****MHz
i : EX IT
No. 51994
19
AV32X25EUS / AV32X250EUS AV32X25EIGY / AV32X25EKGY AV28X25EUS / AV28X25EIGY AV28X25EKGY
FOCUS & SCREEN ADJUSTMENT
Item FOCUS adjustment [28" MODEL] Measuring instrument Signal gener ator Test point Ad justment part FOCUS VR [In HVT] [28"MODEL] 1. Receive a cross -hatc h signal. 2. Press the "ZOOM" key and s elect the FULL mode. 3. While watc hing the screen, adjust the FOCUS VR to make the vertical and horizontal lines as fine and sharp as possible. 4. Make sure that when the sc reen is darkened, the lines remain in good focus . Description
HVT FOCUS VR SCREEN VR
FOCUS adjustment [32" MODEL]
Signal gener ator
FOCUS 1 FOCUS 2 [In HVT]
FOCUS 2 F OC US 1
[32"MODEL] 1. Receive a cross-hatch signal. 2. Push the "ZOOM" key and s elect the FULL mode. 3. By turning the FOCUS2 VR, and adjust the picture so that the " " part vertical line may become thinnest. 4. By turning the FOCUS1 VR, and adjust the picture so that the 3rd horizontal line from the upper may bec ome uniform at the line c enter and its periphery. 5. Carry out adjustment by repeating the steps 3 and 4 above. 6. Make sure that when the sc reen is darkened, the lines remain in good focus.
HVT FOCUS2(F2) FOCUS1(F1) SCREEN1(S1)
SCREEN Ad justment
Signal gener ator
SCREEN VR [In HVT]
1 2 3 4
V/C 1. RGB B LK
PA L 00
5
-/+
OK:
STORE
i : E XI T C LOW s tatu s
Press a whole black signal Press the "ZOOM" key and s elect the FULL mode. Select 2. V/C from the SERVICE MENU. Turn the SCREEN VR clockwis e from the full counter clockwis e position and stop it at the point where "CLOW" status (marked in Fig.) changes from 1 to 0 to 1 (which is indic ated at the 3rd column from the right.) Then turn the SCREEN VR counterclockwis e, and stop where the "CLOW " status changes 1 to 0
00 000 100
"CLOW" : c ontrol loopout of window.
SERVICE MODE SCREEN
20
No. 51994
AV32X25EUS / AV32X250EUS AV32X25EIGY / AV32X25EKGY AV28X25EUS / AV28X25EIGY AV28X25EKGY
VSM PRESET ADJUST SETTING
Item VSM PRESET setting Measuring instrument Remote control unit Test point 1. 2. 3. 4. 5. 6. 7. 8. Ad justment part CONT . BRIGHT SHARP COLOUR HUE WDR R WDR G WDR B 1. 2. 3. Description Select COOL with the MENU key of the remote control unit. Select 5.VSM PRESET from the SERVICE MENU. Adjust the FUNCTION UP/DOWN ( / ) and -/+ ( / )key to bring the set values of 1.CONT 8. WDR B to the values
shown in the table. Press the MENU key and memoriz e the s et value. Respectively s elect the VSM PRESET mode for NORMAL and WARM, and make similar adjustment as in 3 above. 6. Press the MENU key and memoriz e the s et value. 4. 5. Refer to OPERATING INSTRUCTIONS for the PICTURE MODE.
1.CONT. COOL 32" NORMAL WARM COOL 28" NORMAL WARM +16 0 -13 +13 -3 -13
2.BRIGHT 0 0 0 0 0 0
3.SHARP -12 -12 -12 -12 -12 -12
4.COLOUR +1 0 -1 0 0 -1
5.HUE 0 0 0 0 0 0
6.WDR R -27 0 +5 -28 0 +4
7.WDR G -12 0 0 -12 0 0
8.WDR B 0 0 0 0 0 0
SETTING VALUES OF VSM PRESET
No. 51994
21
AV32X25EUS / AV32X250EUS AV32X25EIGY / AV32X25EKGY AV28X25EUS / AV28X25EIGY AV28X25EKGY
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 scr een to the optimum condition can be different from the initial setting values.
Setting item (Adjustm ent item) 2. V/C 1.RGB BLK PAL
Initial setting value SECAM NT SC
2.WDR R
0000
3.WDR G
0000
4.WDR B (Do not adjust)
-012
5.BRIGHT
0000
6.CONTRAST
0060
7.COLOUR
0000
8.HUE
0020
9.SHARP (Do not adjust)
0007
10.VCO ADJ. (Do not adjust)
11.VID AGC (Do not adjust)
0000
12.SYC SLI (Do not adjust)
0007
13.A MOVIE (Do not adjust)
0001
: Do not adjust
22
No. 51994
AV32X25EUS / AV32X250EUS AV32X25EIGY / AV32X25EKGY AV28X25EUS / AV28X25EIGY AV28X25EKGY
Measuring instrument Signal gener ator Remote control unit
Item WHITE BALANCE (High Lig ht) adjustment
Test point
Ad justment part 2. WDR R 3. WDR G 4. WDR B (Do not adjust) " 1. 2. 3.
Description Set the PICTURE MODE to NORMAL. Receive a black and white signal (colour off). Select 2.V/C from the SERVICE MENU. Modify 2. WDR R and 3.WDR G data to adjust the white balance ( high light ). 4. Press the MENU key and memoriz e the s et value. 5. Change the c ontras t and brightnes s with the remote control up & down from lowlight to highlight and check that the tracking of the white balanc e is good.
SUB BRIGHT adjustment
Remote control unit
5. BRIGHT
1. 2. 3. 4. 5.
Receive any broadc ast. Select 2.V/C from the SERVICE MENU. Select 5.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 bes t brightness. 6. Press the MENU key and memoriz e the s et value.
SUB CONT. Ad justment
Remote control unit
6.CONT.
Receive any broadc ast. Select 2.V/C from the SERVICE MENU. Select 6.CONT with the FUNCTION UP/DOWN ( / ) key. Set the initial s etting value with the FUNCTION - / + ( / ) key. 5. If the contrast is not the best with the initial setting value, make fine adjustment until you get the best contras t. 6. Press the MENU key and memoriz e the s et value.
1. 2. 3. 4.
No. 51994
23
AV32X25EUS / AV32X250EUS AV32X25EIGY / AV32X25EKGY AV28X25EUS / AV28X25EIGY AV28X25EKGY
Item Measuring instrument Test point Ad justment part 7.COLOUR (PALNT SC) PAL COLOUR Description [Method of adjustm ent without m easuring instrument] (PAL COLOUR) 1. Receive PAL broadcast. 2. Select 2.V/C from the SERVICE MENU. 3. Select 7.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 bes t with the initial set value, make fine adjustment until you get the best colour. 6. Press the MENU key and memoriz e the s et value.
S UB CO LO UR Remote control unit adjustment
CH. key SECAM COLOUR (SECAM COLOUR) 1. Receive a SECAM broadc ast. 2. Make fine adjustment of SECAM COLOUR in the s ame manner as for above.
MENU ( OK ) k ey 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 NT SC 3.58 COLOUR in the same manner as for above.
FUNCTION key ( INFORMATION ) key i REMOTE CONTROL KEY (NTSC 4.43COLOUR) 1. When NTSC 3.58 COLOUR set, NTSC 4.43 COLOUR will automatic ally set.
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No. 51994
AV32X25EUS / AV32X250EUS AV32X25EIGY / AV32X25EKGY AV28X25EUS / AV28X25EIGY AV28X25EKGY
Item Measuring instrument Test point Ad justment part 7.COLOUR (PALNT SC) PAL COLOUR Description [Method of adjustm ent using measur ing instrument]
S UB CO LO UR Signal gener ator adjustment
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 7.COLOUR with the FUNCTION UP/DOWN ( / ) key. 4. Set the initial setting value of PAL COLOUR with the FUNCTION - or + ( / ) key. 5. Connect the osc illosc ope between TP-47B and TP-E(#). 6. Adjust PAL COLOUR and bring the value of (A) in the illustration to the values as shown giv en billow (Voltage differenc e between white (W) and blue (B)). 7. Press the MENU key and memoriz e the s etting value. VOLTAGE (W-B) +5V
SECAM COLOUR
(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 s hown given billow (Voltage differenc e between white (W) and blue (B)). 4. Press the MENU key and memoriz e the s etting value. VOLTAGE (W-B) +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 s etting value of NTSC 3.58 COLOUR with the FUNCTION -/+ ( / ) key. 3. Adjust NTSC 3.58 COLOUR and bring the value of (A) in the illustration to the values as shown giv en billow (Voltage differenc e between white (W) and blue (B)). 4. Press the MENU key and memoriz e the s etting value.
Y
G
R VOLTAGE (W-B)
32" +5V
28" +6V
(A)
(-) 0
W
Cy
Mg
B (+)
(NTSC 4.43COLOUR) 1. When NTSC 3.58 COLOUR set, NTSC 4.43 COLOUR will automatic ally set.
No. 51994
25
AV32X25EUS / AV32X250EUS AV32X25EIGY / AV32X25EKGY AV28X25EUS / AV28X25EIGY AV28X25EKGY
Measuring instrument Remote control unit
Item SUB HUE adjustment
Test point
Ad justment part 8.HUE
Description [Method of adjustm ent without m easuring 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 8. HUE with the FUNCTION UP/DOW N ( / ) 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 bes t hue. 6. Press the MENU key and memoriz e the s et value.
NTSC 4.43 HUE
(NTSC 4.43 HUE) 1. W hen NTSC 3.58 is set, NTSC 4.43 will be automatic ally s et at the respective values
Ad justment of SUB HUE
Signal gener ator
TP-47B TP-E(# ) # [CRT Oscilloscope SOCKET PWB] Remote control unit
8. HUE
[Method of adjustm ent using measur ing instrument]
NTSC 3.58 HUE
Y
G
R
(B)
[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 8. HUE with the FUNCTION UP/DOW N ( / ) key. 4. Set the initial setting value of NTSC 3.58 HUE with the FUNCTION - or + ( / ) key. 5. Connect the osc illosc ope between TP-47B and TP-E(#) 6. Adjust NTSC 3.58 HUE to bring the value of (B) in the illustration to the values as s hown given billow (voltage differenc e between white (W) and magenta (Mg)). 7. Press the MENU key and memoriz e the s etting value
(-) 0 32" VOLTAGE (W-Mg) -8V 28" -3V
W
Cy
Mg
B (+)
NTSC 4.43 HUE
(NTSC 4.43 HUE) 1. When NTSC 3.58 COLOUR s et, NTSC 4.43 COLOUR will automatic ally set.
26
No. 51994
AV32X25EUS / AV32X250EUS AV32X25EIGY / AV32X25EKGY AV28X25EUS / AV28X25EIGY AV28X25EKGY
DEFLECTION CIRCUIT ADJUSTMENT
There are 4 aspect modes ( FULL, PANORAMIC, SUBTIT LE, COMPRES) of the adjustment ( 1 ) 100Hz i mode, ( 2 ) 120Hz i mode depending upon the kin d of signals ( vertical frequency 100Hzi / 120Hzi ). " " " When the 100Hz FULL mode has been established, the settin g of other modes will be done automatically. Ho wever, if the picture quality has not been optimized, adjust each mod e 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.
Initial setting value ( 32")
Initial setting value Setting item Ad justment nam e FULL 100Hzi 1. V-SHIFT 2. V-SIZE 3. H-CENT 4. H-SIZE 5. TRAPEZ 6. EW-PIN 7. COR-PIN 8. COR-UP 9. COR-LO 10.ANGLE 11.BOW 12.V-S.CR (Do not adju st) 13.V-LIN (Do not adju st) Vertic al center Vertic al height Horizontal center Horizontal width Trapezoidal distortion c orrec tion Side pin correction Corner Pin Corner Pin c orrection Up side Corner Pin c orrection Low s ide Angle c orrection Bow-shaped dis tortion correction Vertic al height c orrection Vertic al Linearity -002 0000 -012 -028 -012 -041 0000 0000 -005 +002 0000 0000 -007 120Hzi +008 +002 +004 -004 +007 +001 +006 +003 -013 0000 0000 -008 +004 PANORAMIC 100Hzi 0000 0000 -002 -002 -003 0000 0000 0000 -004 +001 +001 0000 0000 120Hzi 0000 0000 0000 0000 -002 -001 0000 0000 +002 0000 0000 0000 0000
SUBTITLE 100Hzi +006 +001 0000 0000 -002 0000 0000 0000 -005 +002 +001 +007 -015 120Hzi 0000 0000 0000 0000 0000 -002 +002 0000 +003 0000 0000 0000 0000
: Fixed value
COMPRESS 100Hzi 0000 -014 0000 -003 +002 0000 0000 0000 0000 0000 0000 0000 0000 60P 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000
Initial setting value ( 28")
Initial setting value Setting item Ad justment nam e FULL 100Hzi 1. V-SHIFT 2. V-SIZE 3. H-CENT 4. H-SIZE 5. TRAPEZ 6. EW-PIN 7. COR-PIN 8. COR-UP 9. COR-LO 10.ANGLE 11.BOW 12.V-S.CR (Do not adju st) 13.V-LIN (Do not adju st) Vertic al center Vertic al height Horizontal center Horizontal width Trapezoidal distortion c orrec tion Side pin correction Corner Pin Corner Pin c orrection Up side Corner Pin c orrection Low s ide Angle c orrection Bow-shaped dis tortion correction Vertic al height c orrection Vertic al Linearity -004 +005 -007 -015 -022 -042 0000 0000 -005 0000 0000 +002 -005 120Hzi +009 0000 +004 -004 +009 0000 +010 +001 -007 0000 0000 0000 0000 PANORAMIC 100Hzi 0000 0000 -003 -002 -004 0000 0000 0000 0000 0000 0000 0000 0000 120Hzi 0000 0000 0000 0000 0000 0000 0000 -002 0000 0000 0000 0000 0000 SUBTITLE 100Hzi +005 +001 0000 0000 0000 0000 0000 0000 0000 0000 0000 +010 -015 120Hzi +001 0000 0000 0000 +006 0000 0000 -008 0000 0000 0000 0000 0000 COMPRESS 100Hzi 0000 -015 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 60P 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000
No. 51994
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AV32X25EUS / AV32X250EUS AV32X25EIGY / AV32X25EKGY AV28X25EUS / AV28X25EIGY AV28X25EKGY
Item V-SHIFT Ad justment Measuring instrument Signal gener ator Remote control unit Test point Ad justment part 1. V- SHIFT Description [FULL mode] 1. Receive a circle pattern signal of vertic al 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. Check the adjustment value above in other zoom mode. If it is a wrong adjustment, re-adjust in PANORAMIC mode and adjust by 1.V-SHIFT. 6. Press the MENU key and memoriz e the s et value.
A
B
V-SIZ E adjustment
2.V-SIZE
Screen size
1. Receive a cross-hatch signal. 2. Select 2.V-SIZE and set the initial s etting value. 3. Adjust V-SIZE and make s ure that the vertic al screen size of the picture size is in the bellow table. 4. Press the MENU key and memoriz e the s et value. 5. Input a NTSC VIDEO signal (60Hz) from the EXT terminal, and make sure that the vertic al screen s iz e is in the table below. 6. Press the MENU key and memoriz e the s et value Picture size 100%
Screen size
Picture size 100%
ASPECT MODE SCREEN TOP SCREEN BOTTOM
FULL 92% 92%
PANORAMIC 87% 87% [ SCREEN SIZE ]
SUBTITLE 70% 83%
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AV32X25EUS / AV32X250EUS AV32X25EIGY / AV32X25EKGY AV28X25EUS / AV28X25EIGY AV28X25EKGY
Measuring instrument
Item H. CENTER adjustment
Test point
Ad justment part 3.H-CENT. 1. 2. 3. 4.
Description Receive a c ircle pattern s ignal. Select 3.H-CENT and set the initial s etting value. Adjust H-CENT to make C=D. Press the MENU key and memoriz e the s et value.
C
D
90%
90%
H.SIZ E adjustment
4.H-SIZ E
1. Receive a circle pattern signal. 2. Select 4.H-SIZE and set the initial setting value. 3. Adjust H-SIZE and make sure that the horizontal screen size of the picture size is in the bellow table. 4. Press the MENU key and memoriz e the s et value. 5. 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. 6. Press the MENU key and memoriz e the s et value.
ASPECT MODE H SIZ E
FULL 92%
PANORAMIC 95%
SUBTITLE 92%
[ SCREEN SIZE ]
EW-PIN adjustment
6.EW-PIN
1. Select 6.EW-PIN and s et the initial s etting value 2. Adjust EW-PIN and make the 2nd.vertic al lines at the left and right edges of the screen straight. Als o make sure that the 3rd vertical lines are straight. 3. Press the MENU key and memoriz e the s et value.
Straight
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AV32X25EUS / AV32X250EUS AV32X25EIGY / AV32X25EKGY AV28X25EUS / AV28X25EIGY AV28X25EKGY
Measuring instrument Signal gener ator Remote control unit Parallel
Item TRAPEZIUM adjustment
Test point
Ad justment part 5.TRAPEZ
Description 1. Receive a cross-hatch signal. 2. Select 5.TRAPEZ with the FUNCTION UP/DOWN ( / ) key. 3. Set the initial setting value of TRAPEZ with the FUNCT ION - or + ( / ) key. 4. Adjust TRAPEZ and bring the VERTICAL lines at the right and left edges of the screen parallel . 5. Press the MENU key and memoriz e the s et value.
COR. UP/LO adjustment
Signal gener ator Remote control unit
7.COR-PIN 8.COR-UP 9.COR-LO Straight
Straight
1. Select 8.COR-UP with the FUNCTION UP / DOWN ( / ) key. 2. Set the initial setting value of COR.-UP with the FUNCTION - or + ( / ) key. 3. Adjust COR-UP, and bring the straight line at the upper c orner. 4. Select 9.COR-LO with the FUNCTION UP / DOWN ( / ) key. 5. Set the initial setting value of COR-LO with the FUNCTION - or + ( / ) key. 6. Adjust COR-LO, and bring the straight line at the low corner. 7. Press the MENU key and memoriz e the s et value. 8. If the extreame upper & lower corners are a little pin or barrel chose 7.COR-PIN and adjust. 9. Press the MENU key and memoriz e the s et value
ANGL E adjustment
10. ANGLE
In case where ther e is a parallelogrammical distortion of images o n the scr een. (Fig.A) 1. Select 10.ANGLE with the FUNCTION UP / DOW N ( / ) key. 2. Adjust ANGEL, and bring the VERTICAL lines straight.. 3. Press the MENU key and memoriz e the s et value.
·
Fig. A
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No. 51994
AV32X25EUS / AV32X250EUS AV32X25EIGY / AV32X25EKGY AV28X25EUS / AV28X25EIGY AV28X25EKGY
Item BOW adjustment Measuring instrument Test point Ad justment part 11.BOW · Description In case where th ere is a bow-shaped distortion o f images on the screen. ( Fig.B) 1. Select 11.BOWwith the FUNCTION UP/DOWN ( / ) key. 2. Adjust BOW, and bring the VERTICAL lines straight. 3. Press the MENU key and memoriz e the s et value.
Fig. B
V-S.CR & V.LINEARITY adjustment
12.V-S.CR 13.V-LIN
· 1. 2. 3. 4. 5. 6. TOP
When the vertical linearity has been deteriorated rem arkably, perform the following steps. Receive a cross-hatch signal. Select 13.V-LIN with the FUNCTION UP/DOW N ( / )k ey. Set the initial setting value of 13.V-LIN with the FUNCTION - / + ( / ) key. Select 12.V-S.COR with the FUNCTION UP / DOWN ( / ) key. Set the initial setting value of 12.V-S.COR with the FUNCTION - / + ( / ) key. Adjust 13.V-LIN and 12.V-S.COR so that the spaces of eac h line on TOP, CENTER and BOTTOM bec ome uniform.
NOTE : Do not adjust PANORAMIC & SUBTIT LE mode. CENTER
BOT TOM
At first the adjustment in 100Hz FULL mode should be done, then the data for the other aspect mode is corrected in the respective value at the s ame time. And confirm the deflection adjustment initial setting value in 120Hz (NTSC EXT mode) FULL mode. If the adjustment in 100Hz eac h aspect mode has been done and stored, the data for the s ame as pect modes in 120Hz is corrected in the res pective value. Only the data for the other as pect mode in 120Hz is corrected for its elf.
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AV32X25EUS / AV32X250EUS AV32X25EIGY / AV32X25EKGY AV28X25EUS / AV28X25EIGY AV28X25EKGY
AUDIO CIRCUIT ADJUSTMENT
" Do not touch 3. AUDIO adjustment of the SERVICE MENU as it requires no adjustment. If values had changed for the some reas on, set the initial values in the following table.
3. AUDIO (Do not adjust) Setting item 1. ERR LIMIT 2. A2 ID THR Variable range 000HFF0H 00HFFH fixed value 100H 19H
3. Q-PEAK
0000H7FFFH
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