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Service Document
Es gelten die Vorschriften und Sicherheitshinweise gemäß dem Service Manual „Sicherheit“, Materialnum-mer 720108000001, sowie zusätzlich die eventuell abweichenden, landesspezifischen Vorschriften!
The regulations and safety instructions shall be valid as provided by the „Safety“ Service Manual, part number 720108000001, as well as the respective national deviations.
S
S
ServiceManual
SicherheitSafety
Materialnr./Part No.720108000001
STF 72-1002/7 TextST 70-1002/7 Text
Dieses Service Dokument ist nur in Datenform verfügbarThis Service Document is only available as data
Materialnummer / Part Number 72013000200
Änderungen vorbehalten/Subject to alteration
Made by GRUNDIG in Germany • TCC 0107 HH
http://www.grundig.com
STF 72-1002/7 Text, ST 70-1002/7 Text
C601A0.22u 250V
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C005 0.22u
C004220p
R015470
D617ES1
D6141N4148
R61947
R620120K
R621120K
R63922K
R635150K
R6366.8K
VR6312K
D685 6.2V
D6416.2V
R68810K
R68922K
R687560K
R686150K
C323
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2R3058.2K
R3061.5K
R15375
C301
47p
C302
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5
82
39
13
16
17
9
15
R637180K
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+
C67547u/16V
+
C656220u/16V
Q683B892
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2R3048.2K
R8064.7K
AC230V
50Hz
SW601
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Q6132SC4429
C6161000p 2KV
C617
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R62215K
R6262.2K
C6150.01u
R61522K
C6140.1u
C6134700p
R6171K
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IC601H11A817
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C603C605
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T601ET2868
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XS600A
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C6292200p 400V
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DATA PRT
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S1
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TV /AV
SCART2 ID
SCART1 ID
SERVICE
STD BY
NC
MUTE
NC
RESET
IR IN1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
9282
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
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AGND
GND
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VLIN PWM
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R002 10K
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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28
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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28
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IC301 STV9306
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R031 1K
R029 1K
C324330p/500V
R037 39K
R018 5.6K
GRUNDIG TV4KS SCHEMATIC DIAGRAM
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R015470
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R6366.8K
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MUTE
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RESET
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3
4
5
6
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9
10
11
12
13
14
15
16
17
18
19
20
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24
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KB IN
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Q5082SC2688
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28" 29"LOCATIONR325R636R323R315R329C312C315C311C314L305T604T302
7.5K 1/6W0805 SMD 6.8K
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STF 72-1002/7 Text, ST 70-1002/7 Text
STF 72-1002/7 Text, ST 70-1002/7 Text
STF 72-1002/7 Text, ST 70-1002/7 Text
STF 72-1002/7 Text, ST 70-1002/7 Text
SECIFICATIONSYSTEM...........................PAL,SECAM,.B/G,.D/K.NIACAM.STEREO...........POWER.INPUT..............................................AC.170-260V(50/60Hz)POWER.CONSUMPTION...................................28”.100W.29”.120WAERIAL.IMPEDANCE.................................. 75.OHM.UNVALANCEDTUNER.......................................VOLTAGE.SYNTHESIZER.TUNINGRECEIVING.CHANNELS.............................................VHF-L.E2-S10....................................................................................VHF-H.E5-S41..................................................................................... UHF.E21-E69PROGRAMME...............................MAX.99.PROGRAM.MEMORIESPICTURE.TUBE..................................................................... .28”.29”SOUND.OUTPUT.........................................................................≥5W.AV.JACKS..................................................................... FULL.SCART...................................................................... AV.SCART.&.SIDE.RCA.
CAUTION: Before.servicing.the.chassis,.read.the.“Safely.Precaution”..“X.-Ray.radiation.Precaution”.and.“Product.Safety.Notice”.in.this.manual.
X-RAY RADIATION PRECAUTION1..Excessive.high.voltage.can.produce.potentially.hazardous.X-RAY.RADIATION..To.Avoid.such.hazards.the.high.voltage.must.be.specified.limit..The.
normal.value.of.the.high.voltage.of.this.receiver.is.28”.27KV.29”.30KV.+/-500V.under.230V.AC.power.source..The.high.voltage.must.not.exceed.32KV.
2..Each.time.a.receiver.requires.servicing.the.high.voltage.should.be.checked.following.the.HIGH.VOLTAGE.CHECK.procedure.in.this.manual..It.is.recommended.the.reading.of.the.high.voltage.be.recorded.as.a.part.of.the.service.record..It.is.important.to.use.an.accurate.and.reliable.high.voltage.meter..
3..The.primary.source.of.X.-RAY.RADIATION.in.this.TV.receiver.is.the.picture.tube..For.continued.X-RAY.RADIATION.protection,.the.replacement.tube.must.be.exactly.the.same.type.tube.as.used.in.this.TV.receiver.
4..Some.parts.in.this.receiver.have.special.safety-related.characteristics.for.X-RAY.RADIATION.protection..For.continued.safety,.parts.replacement.should.be.undertaken.only.after.referring.the.PRODUCT.SAFETY.NOTICE.below.
SAFETY PRECAUTIONWARNING: Service.should.not.be.attempted.by.anyone.unfamiliar.with.the.necessary.Precautions.on.this.receiver.The.following.are.the.necessary.precautions.to.be.observed.before.servicing.this.chassis.1..Since.the.power.supply.circuit.of.this.receiver.is.directly.connected.to.the.AC.power.line..An.isolation.transformer.should.be.used.during.any.dynamic.
service.to.avoid.possible.shock.hazard.2..Always.discharge.the.picture.tube.anode.to.the.CRT.conductive.coating.before.handling.the.picture.tube..The.picture.tube.is.highly.evacuated.and.if.
broken,.glass.fragments.will.be.violently.expelled..Use.shatterproof.goggles.and.keep.picture.tube.away.from.the.unprotected.body.while.handling.3..When.replacing.a.chassis.in.the.cabinet,.always.be.certain.that.all.the.protective.devices.are.put.back.in.place,.such.as:.nonmetallic.control;.knobs,.
insulating.covers,.shields,.isolation.resistor-capacitor,.network,.etc.4..When.replacing.parts.or.circuit.boards,.disconnect.the.power.cord.5..When.replacing.a.high.voltage.resistor.(metal.oxide.resistor).on.circuit.board,.keep.the.resistor.APP..10mm(1/2.in.).away.from.circuit.board.6..Connection.wires.must.be.kept.away.from.components.with.high.voltage.or.high.temperature.7..If.any.fuse.in.this.TV.receiver.is.blown,.replace.it.with.the.FUSE.specified.in.the.chassis.parts.list.8..The.receiver.is.designed.to.operate.with.230V(50Hz).AC.mains.
PRODUCT SAFETY NOTICEMany.electrical.and.mechanical.parts.in.this.chassis.have.special.safety-related.characteristics.are.often.passed.unnoticed.by.a.visual.inspection.and.the.X-RAY.RADIATON.protection.afforded.by.them.cannot.necessarily.be.obtained.by.using.replacement.components.rated.for.higher.voltage..The.use.of.substitute.replacement.parts.that.do.not.have.the.same.safety.characteristics.as.specified.in.the.parts.list.may.create.shock,.fire,.X-RAY.RADIATION.or.other.hazards.
STF 72-1002/7 Text, ST 70-1002/7 Text
GENERAL ADJUSTMENTAUTOMATIC DEGAUSSINGAn.automatic.degaussing.coil.is.attached.around.the.picture.tube,.degaussing.the.tube.properly.in.about.one.second.after.the.set.is.switched.on..If.the.receiver.is.moved.or.faced.on.a.different.direction,.the.power.must.be.switched.off.at.least.15.minutes.in.order.that.the.automatic.degaussing.circuit.operated.properly..External.degaussing.is.necessary.if.the.automatic.degassing.proves.ineffective.after.the.set.is.moved.
B+ ADJUSTMENTCAUTION:.To.avoid.X-ray.hazards.and.result.in.a.nominal.display.width,.B+.voltage.must.be.set.in.the.scale.of.28”.140V±0.5V.29”.130V±0.5V..1..Make.sure.the.AC.power.supply.is.230V,.50Hz.2..Switch.on.the.TV.receiver,.tune.in.an.active.channel.3..Measure.the.voltage.between.C641.on.Main.P.C..Board.by.DC.voltmeter.4..Set.contrast,.brightness,.color.to.maximum.5..Adjust.VR631.on.Main.P.C..Board.for.B+.28”.140V±0.5V.29”.130V±0.5V.voltage.reading.
HIGH VOLTAGE CHECKCAUTION:.There.is.no.high.voltage.adjustment.in.this.chassis,.B+.voltage.directly.relates.to.the.high.voltage..The.high.voltage.does.not.exceed.28”.27KV±500V.29”30KV±500V.under.any.conditions.1..Connect.an.accurate.high.voltage.meter.to.the.second.anode.cap.of.the.picture.tube.2..Turn.on.the.receiver,.set.brightness.and.contrast.to.minimum.(Zero.beam.current).3..Make.sure.the.high.voltage.does.not.exceed.30KV±500V.4..NO. matter. whether. the. luminance,. contrast. and. chrominance. controls. are. set. to. maximum. or. minimum,. the. high. voltage. must. be. kept. under.
30KV±500V.
FOCUSINGReceive.a.TV.test.pattern.signal;.adjust.focus.knob.to.get.optimum.picture,.a.well-defined,.sharpest.display.in.the.center.area.of.the.screen.
ADJUSTMENT AND SERVICING THE CHASSISSERVICE MODETo.enter.the.service.mode,.a.special.remote.control.which.contains.an.additional.SERVICE.key.must.be.used..See.the.illustration...Press.the.‘SERVICE’.key.on.remote.control,.TV.will.display.service.menu.as.following.table.1.line.by.line..To.select.the.item.by.using.the.‘P+/P-’.keys..To.adjust.the.value.of.selected.parameter.by.using.the.‘V+/V-’.keys..To.quit.the.service.mode,.press.the.‘P.P.’.key.on.remote.control.when.in.the.service.mode.
Table.1
Parameter ValueRed.gain 32DC.red. 063Green.gain 32DC.green 063Blue.gain 32DC.blue 063Apr.threshold 12Logo. 6Red.Cutoff 31Green.Cutoff 31
To.enter.the.table.2,.press.the.‘OK’.key.on.the.remote.control.for.the.first.time.when.in.the.service.mode.
Table.2
Parameter ValueTuner.AGC 22H.POS.50 32VPOS.50 8VAMP.50 47VLIN.50 31H.POS.60 32VPOS.60 10VAMP.60 53VLIN.60 31Bright.max 63Bright.min 00Sub.tint 32VCO.coarse 05VCO.fine 063VCO.coarse.L1 05VCO.fine.L1 080
1
5
9 - /- -
6 7 8
ⅠⅡ/
2 3 4
STF 72-1002/7 Text, ST 70-1002/7 Text
To.enter.the.table.3,.press.the.‘OK’.key.for.the.second.time.on.the.remote.control.when.in.the.service.mode.
Table.3
Parameter ValueAGC.gain 00Option.1 54Option.2 00Option.3 134Option.4 027Option.5 00ST.Ttext 00H.POS.OSD 001V.POS.OSD 01H.POS.TXT 067V.POS.TXT 04Hotel.Mode OFFVolume.Limit 10Snd.ST1 79Snd.ST2 79
Following.are.item.description.of.OPTION.in.more.details.
OPTION1b7.=.Over.modulation.(0=Disable,.1=Enable,.it’s.suggested.to.set.it.to.0.normally.).b5.=.P/N/S.crystals.application.(0=2.Crystals,.1=.1.Crystals,.according.the.quantity.of.cristal.used.for.color.decoding.in.chassis.).b4.=.Cutoff.Loop.(0=.OFF,.1=ON,.it’s.suggested.to.set.it.to.1.normally).b3.=.Safety_Reset(0=Active,.1=Non,.it’s.suggested.to.set.it.to.0.normally).b2.=.MONO.IN(0.=.OFF.,.1=.ON,.Depend.on.the.sound.decoding.solution.used.in.chassis..).b1.=.Sound.Demodulation.(.0.=.Intercarrier/MONO,.1.=QSS/NICAM,.depend.on.the.sound.decoding.solution.used.in.chassis.).b0.=.logo.display(0.=OFF,.1=.ON,.it’s.suggested.to.set.it.to.0.normally.)
OPTION2 (set to 0 by default) b5.=.HALF_CONTRAST(0.=.OFF,.1=ON).b4.=.Color.6dB.(0.=.OFF.,.1.=.ON.).b3.=.APR.Feature.(0.=.ON.,.1=.OFF.).b2.=.Black.Strech.(0.=.ON.,.1=.OFF.).b1.=.Auto.Flesh.(0.=.ON.,.1=.OFF.).b0.=.Coring.(.0.=.ON.,.1.=.OFF.).
OPTION3b7.=SMART.(0.=.OFF,.1=ON,.it’s.suggested.to.set.it.to.1.normally)b5.=.AVL.(0.=.OFF,.1=ON,.it’s.suggested.to.set.it.to.0.normally.).b4.=.PIF.overmodulation.(0.=.OFF,.1=.ON,.it’s.suggested.to.set.it.to.0.normally.).b3.=.Market_France.-.secam.LL.(.0.=.OFF,.1.=.ON,.depend.on.the.solution.of.chassis.).b2.=.Manual/Auto.cutoff.(.0.=.Manual,.1.=.Auto.cutoff,.depend.on.the.CRT.for.chassis..).b1.=.Mute.pin.low/high.–to.contol.the.mute.of.speaker(.0.=.low,.1.=.high,.depend.on.the.solution.of.chassis.)
OPTION4b6.=.WIDE.MODE.(.0.=.OFF,1=ON,.it’s.suggested.to.set.it.to.0.normally.).b4.=.SCART2.(.0.=.OFF,1=ON,.depend.on.the.solution.of.chassis.).b3.=.RGB.(.0.=.OFF,.1=.ON,.depend.on.the.solution.of.chassis.).b2.=.SVHS.(.0.=.OFF,.1=.ON,.depend.on.the.solution.of.chassis.).b1.=.AV2.(.0.=.OFF,.1=.ON,.depend.on.the.solution.of.chassis.).b0.=.AV1.(.0.=.OFF,.1=.ON,.depend.on.the.solution.of.chassis.).
OPTION5There.are.8.bits.used.in.OPTION.5..They.are.b0,.b1,.b2,.b3,.b4,.b5,.b6.and.b7.For.b0,.normally,.ST.suggests.to.set.it.to.0..For.b1,.b2,.they.are.used.to.select.teletext.languages..For.b3,.it’s.used.to.enable.AV3.and.SVHS..When.b3.is.set.to.0,.SVHS.is.enabled..When.b3.is.set.to.1.in.binary,.the.value.is.8.in.decimal..AV3.is.en-abled.For.b4,.b5,.b6.and.b7.of.OPTION.5.are.also.used.to.set.the.brightness.of.background.in.teletext.mode..When.b4.b5.b6.and.b7.are.all.set.to.0,.the.brightness.of.teletext.background.is.the.same.as.brightness.of.TV.background..When.b4,.b5,.b6.and.b7.are.all.set.to.1,.it’s.the.maximum.brightness.of.teletext.background..It’s.the.minimum.brightness.of.teletext.background.when.b4.is.set.to.1,.and.b5,.b6.and.b7.are.all.set.to.0..you.can.set.these.4.bits.according.to.your.favorite.brightness.of.teletext.background.
A..For.11.OSD.languages.ST92195C7B1/MXX.for.east.Europe,.the.setting.of.the.b1.and.b2.is.listed.as.below.1..If.b1.=.b2.=.0,.then.the.TEXT.languages.like.“ENGLISH,.FRENCH,.SWEDISH,.CZECH,.GERMAN,.PORTUGUESE.(SPANISH),.ITALIAN,.RUMANIAN”.
can.be.decoded;2..If.b1=1,.b2=0,.then.the.TEXT..languages.like.�ENGLISH,.RUSSIAN.(BULGARIAN),.HUNGARIAN,.TURKISH,.GERMAN,.PORTUGUESE.(SPANISH),.
ITALIAN,.RUMANIAN”.can.be.decoded.3..If.b1=0,.b2=1,. then. the.TEXT. languages. like. �POLISH,.RUSSIAN.(BULGARIAN),.SWEDISH,.SLOVAK,.GERMAN,.SLOVENIAN,.LITHUANIAN,.
RUMANIAN”.can.be.decoded.4..If.b1.=.b2.=1,.then.the.TEXT.languages.like.�POLISH,.RUSSIAN.(BULGARIAN),.SWEDISH,.CZECH,.GERMAN,.CROATIAN,.LETTISH,.RUMANIAN”.
can.be.decoded.
STF 72-1002/7 Text, ST 70-1002/7 Text
C.For12OSDlanguagesST92195C7B1/MXXforwesternEurope,thesettingoftheb1andb2isasbelow.1.Ifb1=b2=0,thentheTEXTlanguageslike“ENGLISH,FRENCH,FINNISH,CZECH,GERMAN,PORTUGUESE(SPANISH),ITALIAN,GREEK”
canbedecoded;2.Ifb1=1,b2=0,thentheTEXTlanguageslike�ENGLISH,FRENCH,DANISH,NORWEGIAN,GERMAN,PORTUGUESE(SPANISH),ITALIAN,GREEK”
canbedecoded.3.Ifb1=0,b2=1,thentheTEXTlanguageslike�POLISH,FRENCH,SWEDISH,CZECH,HOLLAND,SERBIAN,ITALIAN,RUMANIAN�canbedeco-
ded.4.Ifb1=b2=1,thentheTEXTlanguageslike�POLISH,FRENCH,SWEDISH,CZECH,GERMAN,PORTUGUESE(SPANISH),LETTISH,RUMANIAN”
canbedecoded.
ST Ttext - only for ST engineer b0 = enableSTtochangetheprocessforadjustingAutogain.b1,b2,b3 = selectthecorrectprocess ROM_M6_P_valid|OSDEPROM_M6_R_valid|ROM_M6_R_valid|EPROM_M6_R_valid EPROM_M6_R_valid|ROMLESS_H5_P_valid|ROM_H5_P_valid|EPROM_M6_A_valid /*note:ROMLESS_M6_R_valid==ROM_M6_R_valid*/b4 =ColortransitionforSVHSofSTV224XH(0=OFF,1=ON).b5 =TunerDriftCorrection(0=OFF,1=ON.)
HPOS OSDAdjustmentforhorizontalpositionofOSD.
VPOS OSDAdjustmentforverticalpositionofOSD.
HPOS TXTAdjustmentforhorizontalpositionofteletext.
VPOS TXTAdjustmentforverticalpositionofteletext.
HOTEL MODETosetHOTELMODEONorOFF.WhenHOTELMODEisenabled.TheendusercannotmakeanyadjustmentofitemsinmenuINSTALL,AUDIOandORGANIZE.MenuINSTALLandAUDIOwilldisappearautomatically.
Volume LimitTosetthemaximumvolume.It’sonlyavailablewhenHOTELMODEisenabled.SndSt 1b0,b1,b2,b3ofSndSt1areusedtosetthesoundoutputlevelatpin26andpin27ofSTV8216withRFsignal.Whenb0,b2,b2,b3ofSndSt1areallset0,theminimumsoundoutputlevelwillbegotatpin26andpin27ofSTV8216withRFsignal.Whenb0,b2,b2,b3ofSndSt1areallset1,it’s15indecimal.Themaximumsoundoutputlevelwillbegotatpin26andpin27ofSTV8216withRFsignal.b4,b5,b6,b7ofSndSt1areusedtosetthe“SURROUND”gainatpin26andpin27ofSTV8216withRF&AVsignal.Whenb4,b5,b6,b7ofSndSt1areallset0,theminimum“SURROUND”gainwillbegotatpin26andpin27ofSTV8216withRF&AVsignal.Whenb4,b5,b6,b7ofSndSt1areallset1,it’s240indecimal.Themaximum“SURROUND”gainwillbegotatpin26andpin27ofSTV8216withRFsignal.SndSt 2b0,b1,b2,b3ofSndSt2areusedtosetthesoundoutputlevelatpin26andpin27ofSTV8216withAVsignal.Whenb0,b2,b2,b3ofSndSt1areallset0,theminimumsoundoutputlevelwillbegotatpin26andpin27ofSTV8216withAVsignal.Whenb0,b2,b2,b3ofSndSt1areallset1,it’s15indecimal.Themaximumsoundoutputlevelwillbegotatpin26andpin27ofSTV8216withAVsignal.b4,b5,b6,b7ofSndSt2areusedtosetthe“EQUALIZER”gainatpin26andpin27ofSTV8216withRF&AVsignal.Whenb4,b5,b6,b7ofSndSt1areallset0,themaximum“EQUALIZER”gainwillbegotatpin26andpin27ofSTV8216withRF&AVsignal.Whenb4,b5,b6,b7ofSndSt1areallset1,it’s240indecimal.Theminimum“SURROUND”gainwillbegotatpin26andpin27ofSTV8216withRF&AVsignal.
A.F.C. ADJUSTMENTRemovinganyR.F.signalsourceandpreventanystraysignalsource fromentering the tunerbyshorting the tuner input innercontact to theoutscreen.Injectthe38.9MHZcarrierintothetunerIFoutputpin(pin11).Selecttheitem‘VCOCoarse’intheservicemode(seeTable2).The‘VCOStatus…’willappearatbottomofthescreen.Thenpressthe‘AV’keyonremotecontrol,theCPUwilladjustautomaticallyuntilthe‘VCOStatusOK’appearsonthescreen.Ifthiscannotbeachieved,i.e.thereisnoanypatternonthescreen,pleaseadjusttheT201firstuntilastablepatternappearsonthescreen.Andthenpressthe‘AV’keyonremotecontrol.TheCPUwilladjustautomaticallyonceagainuntilthe‘VCOStatusOK’appearsonthescreen.
GEOMETRYToadjustthepicturepositionandverticalsize,selecttheappropriateparameterintheservicemodeandadjustasnecessary.Pleaseseetable2.
Remotecontrol
29 DIRECTIVTY8m(MIN) 8m(NOR) OK30 DIRECTIVTY30°FROMLIGHTAXIS5m(MIN) 7m(NOR) OK
