SHARP 32L-S500, 32L-X2000, CL32S50, 36L-X2000 Service Manual

32L-S500,32L-X2000

CL32S50,36L-X2000

SERVICE MANUAL

S79J832L-S500

COLOR TELEVISION

Chassis No. SN-93

32L-S500, 32L-X2000

MODELS

In the interests of user-safety (Required by safety regulations in some countries) the set should be restored to its original condition and only parts identical to those specified should be used.

CL32S50, 36L-X2000

CONTENTS

Page

» ELECTRICAL SPECIFICATIONS........................................................................................................... 1

» IMPORTANT SERVICE SAFETY PRECAUTION ..................................................................................2

» LOCATION OF USER'S CONTROL....................................................................................................... 6

» INSTALLATION AND SERVICE INSTRUCTIONS ................................................................................. 7

» CHASSIS LAYOUT .............................................................................................................................. 14

» BLOCK DIAGRAM ............................................................................................................................... 18

» SCHEMATIC DIAGRAMS .................................................................................................................... 22

» PRINTED WIRING BOARD ASSEMBLIES.......................................................................................... 50

» REPLACEMENT PARTS LIST ............................................................................................................. 55

» PACKING OF THE SET ....................................................................................................................... 75

ELECTRICAL SPECIFICATIONS

POWER INPUT ..................................................... 120V AC 60 Hz

POWER RATING

32L-S500, CL32S50 .......................................................... 145W

32L-X2000 ......................................................................... 150W

36L-X2000 ......................................................................... 165W

PICTURE SIZE

32L-S500, CL32S50, 32L-X2000 ............ 3,073cm2 (476sq inch)

36L-X2000 ............................................... 3,905cm2 (605sq inch)

CONVERGENCE............................................................. Magnetic

SWEEP DEFLECTION .....................................................Magnetic

FOCUS ............................................... Hi-Bi-Potential Electrostatic

INTERMEDIATE FREQUENCIES

Picture IF Carrier Frequency ..................................... 45.75 MHz

Sound IF Carrier Frequency ...................................... 41.25 MHz

Color Sub-Carrier Frequency..................................... 42.17 MHz

(Nominal)

AUDIO POWER

OUTPUT RATING.................... 3W + 3W (at 10% distortion and

Dual CH Operate)

SPEAKER

SIZE ............................................................... 12 x 6 cm (2 pcs.)

VOICE COIL IMPEDANCE............................... 6 ohm at 400 Hz

ANTENNA INPUT IMPEDANCE

VHF/UHF .................................................... 75 ohm Unbalanced

TUNING RANGES

VHF-Channels .............................................................. 2 thru 13

UHF-Channels ............................................................14 thru 69

CATV Channels ..........................................................1 thru 125

(EIA, Channel Plan U.S.A.)

Specifications are subject to change without prior notice.

SHARP CORPORATION

This document has been published to be used for after sales service only. The contents are subject to change without notice.

32L-S500,32L-X2000

CL32S50,36L-X2000

Service work should be performed only by qualified service technicians who are thoroughly familiar with all safety checks and the servicing guidelines which follow:

IMPORTANT SERVICE SAFETY PRECAUTION

WARNING

1. For continued safety, no modification of any circuit should be attempted.

2. Disconnect AC power before servicing.

3. Semiconductor heat sinks are potential shock hazards when the chassis is operating.

4. The chassis in this receiver has two ground systems which are separated by insulating material. The nonisolated (hot) ground system is for the B+ voltage regulator circuit and the horizontal output circuit. The isolated ground system is for the low B+ DC voltages and the secondary circuit of the high voltage transformer. To prevent electrical shock use an isolation transformer between the line cord and power receptacle, when servicing this chassis.

CAUTION: FOR CONTINUED PROTECTION AGAINST A RISK OF FIRE, REPLACE

5A 125V

ONLY WITH SAME TYPE 5A125V FUSE.

SERVICING OF HIGH VOLTAGE SYSTEM AND PICTURE TUBE

When servicing the high voltage system, remove the static charge by connecting a 10k ohm resistor in series with an insulated wire (such as a test probe) between the picture tube ground and the anode lead. (AC line cord should be disconnected from AC outlet.)

1. Picture tube in this receiver employs integral implosion protection.

2. Replace with tube of the same type number for continued safety .

3. Do not lift picture tube by the neck.

4. Handle the picture tube only when wearing shatterproof goggles and after discharging the high voltage anode completely.

X-RADIATION AND HIGH VOLTAGE LIMITS

1. Be sure all service personnel are aware of the procedures and instructions covering X-radiation. The only potential source of X-ray in current solid state TV receivers is the picture tube. However, the picture tube does not emit measurable X-Ray radiation, if the high voltage is as specified in the "High Voltage Check" instructions. It is only when high voltage is excessive that Xradiation is capable of penetrating the shell of the picture tube including the lead in the glass material. The important precaution is to keep the high voltage below the maximum level specified.

2. It is essential that servicemen have available at all times an accurate high voltage meter. The calibration of this meter should be checked periodically.

3. High voltage should always be kept at the rated value

−no higher. Operation at higher voltages may cause a failure of the picture tube or high voltage circuitry and;also, under certain conditions, may produce radiation in exceeding of desirable levels.

4. When the high voltage regulator is operating properly there is no possibility of an X-radiation problem. Every time a colour chassis is serviced, the brightness should be tested while monitoring the high voltage with a meter to be certain that the high voltage does not exceed the specified value and that it is regulating correctly .

5. Do not use a picture tube other than that specified or make unrecommended circuit modifications to the high voltage circuitry.

6. When trouble shooting and taking test measurements on a receiver with excessive high voltage, avoid being unnecessarily close to the receiver. Do not operate the receiver longer than is necessary to locate the cause of excessive voltage.

IMPORTANT SERVICE SAFETY PRECAUTION

(Continued)

32L-S500,32L-X2000

CL32S50,36L-X2000

BEFORE RETURNING THE RECEIVER (Fire & Shock Hazard)

Before returning the receiver to the user, perform the following safety checks.

1. Inspect all lead dress to make certain that leads are not pinched or that hardware is not lodged between the chassis and other metal parts in the receiver.

2. Inspect all protective devices such as non-metallic control knobs, insulating materials, cabinet backs, adjustment and compartment covers or shields, isolation resistor-capacity networks, mechanical insulators, etc.

3. To be sure that no shock hazard exists, check for leakage current in the following manner.

• Plug the AC cord directly into a 120 volt AC outlet, (Do not use an isolation transformer for this test).

• Using two clip leads, connect a 1.5k ohm, 10 watt resistor paralleled by a 0.15µF capacitor in series with all exposed metal cabinet parts and a known earth ground, such as electrical conduit or electrical ground connected to earth ground.

• Use an AC voltmeter having with 5000 ohm per volt, or higher, sensitivity to measure the AC voltage drop across the resistor.

• Connect the resistor connection to all exposed metal parts having a return to the chassis (antenna, metal cabinet, screw heads, knobs and control shafts, escutcheon, etc.) and measure the AC voltage drop across the resistor. AII checks must be repeated with the AC ine cord plug connection reversed. (If necessary, a nonpolarized adapter plug must be used only for the purpose of completing these check.) Any current measured must not exceed 0.5 milliamp. Any measurements not within the limits outlined above indicate of a potential shock hazard and corrective action must be taken before returning the instrument to the customer.

VOLTMETER

1.5k ohm 10W

0.15µF

TEST PROBE

TO EXPOSED METAL PARTS

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CONNECT TO KNOWN EARTH GROUND

SAFETY NOTICE

Many electrical and mechanical parts in television receivers have special safety-related characteristics. These characteristics are often not evident from visual inspection, nor can protection afforded by them be necessarily increased by using replacement components rated for higher voltage, wattage, etc. Replacement parts which have these special safety characteristics are identified in this manual; electrical components having such features are identified by "å" and shaded areas in the

Replacement Parts Lists

and

Schematic Diagrams.

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For continued protection, replacement parts must be identical to those used in the original circuit. The use of substitute replacement parts which do not have the same safety characteristics as the factory recommended replacement parts shown in this service manual, may create shock, fire, X-radiation or other hazards.

32L-S500,32L-X2000

CL32S50,36L-X2000

PRECAUTIONS A PRENDRE LORS DE LA REPARATION

Ne peut effectuer la réparation qu' un technicien spécialisé qui s'est parfaitement accoutumé à toute vérification de sécurité et aux conseils suivants.

AVERTISSEMENT

1. N'entreprendre aucune modification de tout circuit. C'est dangereux.

2. Débrancher le récepteur avant toute réparation.

3. Les déversoirs thermiques à semi-conducteurs peuvent présenter un danger de choc électrique lorsque le réceqteur est en marche.

4. Le châssis de ce récepteur possède deux systèmes de masse qui sont séparées par du matériel d'isolation. Le système de masse non-isolée (sous tension) est pour le circuit du régulateur de tension B+ et le circuit de sortie horizontale. Le système de masse isolée est pour les tensions DC B+ basses et le circuit secondaire du transformateur haute tension. Pour éviter tout risque d'électrocution lors de l'entretien de ce châssis, utiliser un transformateur d'isolation entre le cordon de ligne et la prise de courant.

PRECAUTION: POUR LA PROTECTION CONTINUE CONTRE LES RISQUES

5A 125V

D'INCENDIE, REMPLACER LE FUSIBLE P AR UN FUSIBLE DE MEME TYPE 5A-125V .

REP ARA TION DU SYSTEME A HAUTE TENSION ET DU TUBE-IMAGE

Lors de la réparation de ce systéme, supprimer la charge statique en branchant une résistance de 10 kΩ en série avec un fil isolé (comme une sonde d'essai) entre la mise à la terre du tube-image et le fil d'anodel. (Le corden d'alimentation doit être retiré de la prise murale.)

1. Le tube image dans ce récepteur emploie une protection intégrée contre l'implosion.

2. Par mesure de sécurité, changer le tube-image pour un tube du même numéro de type.

3. Ne pas lever le tube-image par son col.

4. Ne manipuler le tube-image qu'en porant des lunettes incassables et qu'après avoir déchargé totalement la haute tension.

LIMITES DES RADIATIONS X ET DE LA HAUTE TENSION

1. Tout le personnel réparateur doit être instruit des instructions et procédés relatifs aux radiations X. Le tube-image, seule source de rayons X dons les téleviseurs transistorisés, n'émet pourtant pas de rayons mesurables si la haute tension est maintenue à un niveau préconisé dans la section "Vérification de la haute tension". C'est seulement quand la haute tension est excessive que les rayons X peuvent entrer dans l'enveloppe du tube-image y compris le conducteur de verre. Il est important de maintenir la haute tension en-dessous du niveau spécifié.

2. Il est essentiel que le réparateur ait sous la main un voltmètre à haute tension qui doit être périodiquement étalonné.

3. La haute tension doit toujours être maintenue à la valeur de régime -et pas plus haute. L'opération à des tensions plus élevées peut entraîner une panne du tube-image ou du circuit à haute tension et, dans certaines conditions, peut entraîner une radiation dépassant les niveaux préscrits.

4. Quand le régulateur à haute tension fonctionne correctement, il n'y a aucun problème de radiation X. Chaque fois qu'un châssis couleurs est réparé, la luminosité doit être examinée bout en contrôlant la haute tension à l'aide d'un voltmètre pour s'assurer que la haute tension ne dépasse pas la valeur spécifiée et qu'elle soit correctement réglée.

5. Ne pas utiliser un tube-image autre que celui spécifié et ne pas effectuer de modifications déconseillées du circuit à haute tension.

6. Lors de la recherche des pannes et des mesures d'essai sur un récepteur qui présente une haute tension excessive, éviter de s'approcher inutilement du récepteur. Ne pas faire fonctionner le récepteur plus longtemps que nécessaire pour localiser la cause de la tension excessive.

32L-S500,32L-X2000

2 2

1.5k ohm 10W

0.15µF

SONDE D'ESSAI

AUX PIECES METALLIQUES EXPOSEES

BRANCHER A UNE TERRE CONNUE

Voltmètre CA

CL32S50,36L-X2000

PRECAUTIONS A PRENDRE LORS DE LA REPARATION

(Suite)

VERIFICATIONS CONTRE L'INCEN-DIE ET LE CHOC ELECTRIQUE

Avant de rendre le récepteur à l'utilisateur , effectuer les vérifications suivantes.

1. Inspecter tous les faisceaux de câbles pour s'assurer que les fils ne soient pas pincés ou qu'un outil ne soit pas placé entre le châssis et les autres pièces métalliques du récepteur.

2. Inspecter tous les dispositifs de protection comme les boutons de commande non-métalliques, les isolants, le dos du coffret, les couvercles ou blindages de réglage et de compartiment, les réseaux de résistance-capacité, les isolateurs mécaniques, etc.

3. S'assurer qu'il n'y ait pas de danger d'électrocution en vérifiant la fuite de courant, de la facon suivante:

• Brancher le cordon d'alimentation directem-ent à une prise de courant de 120V. (Ne pas utiliser de transformateur d'isolation pour cet essai).

• A l'aide de deux fils à pinces, brancher une résistance de 1,5 kΩ 10 watts en parallèle avec un condensateur de 0,15µF en série avec toutes les pièces métalliques exposées du coffret et une terre connue comme une conduite électrique ou une prise de terre branchée à la terre.

• Utiliser un voltmètre CA d'une sensibilité d'au moins 5000Ω/V pour mesurer la chute de tension en travers de la résistance.

• T oucher avec la sonde d'essai les pièces métalliques exposées qui présentent une voie de retour au châssis (antenne, coffret métallique, tête des vis, arbres de commande et des boutons, écusson, etc.) et mesurer la chute de tension CA en-travers de la résistance. Toutes les vérifications doivent être refaites après avoir inversé la fiche du cordon d'alimentation. (Si nécessaire, une prise d'adpatation non polarisée peut être utilisée dans le but de terminer ces vérifications.) Tous les courants mesurés ne doivent pas dépasser 0,5 mA. Dans le cas contraire, il y a une possibilité de choc électrique qui doit être supprimée avant de rendre le récepteur au client.

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AVIS POUR LA SECURITE

De nombreuses pièces, électriques et mécaniques, dans les téléviseurs présentent des caractéristiques spéciales relatives à la sécurité, qui ne sont souvent pas évidentes à vue. Le degré de protection ne peut pas être nécessairement augmentée en utilisant des pièces de remplacement étalonnées pour haute tension, puissance, etc. Les pièces de remplacement qui présentent ces caractéristiques sont identifiées dans ce manuel; les pièces électriques qui présentent ces particularités sont

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identifiées par la marque " å " et hachurées dans la liste des pièces de remplacement et les diagrammes schématiques. Pour assurer la protection, ces pièces doivent être identiques à celles utilisées dans le circuit d'origine. L'utilisation de pièces qui n'ont pas les mêmes caractéristiques que les pièces recommandées par l'usine, indiquées dans ce manuel, peut provoquer des électrocutions, incendies, radiations X ou autres accidents.

32L-S500,32L-X2000

CL32S50,36L-X2000

LOCATION OF USER'S CONTROL

32L-S500,32L-X2000

CL32S50,36L-X2000

INSTALLATION AND SERVICE INSTRUCTIONS

Note: (1)When performing any adjustments to resistor controls and transformers use non-metallic

screwdrivers or TV alignment tools.

(2)Before performing adjustments, the TV set must be on at least 15 minutes.

CIRCUIT PROTECTION

The receiver is protected by a 5.0A fuse (F701), mounted on PWB-C, wired into one side of the AC line input.

X-RADIATION PROTECTOR CIRCUIT TEST

After service has been performed on the horizontal deflection system, high voltage system, B+ system, test the X-Radiation protection circuit to ascertain proper operation as follows:

1. Apply 120V AC using a variac transformer for accurate input voltage.

2. Allow for warm up and adjust all customer controls for normal picture and sound.

3. Receive a good local channel.

4. Connect a digital voltmeter to TP653 and make sure that the voltmeter reads 11.83±0.7V (32L-S500, CL32S50, 32L-X2000)/11.80±0.7V (36L-X2000).

5. Apply external 14.5V DC at TP653 by using an external DC supply, TV must be shut off.

6. To reset the protector, unplug the AC cord and plug the AC cord power on. Now make sure that normal picture appears on the screen.

7. If the operation of the horizontal oscillator does not stop in step 5, the circuit must be repaired before the set is returned to the customer.

HIGH VOLTAGE CHECK

High voltage is not adjustable but must be checked to verify that the receiver is operating within safe and efficient design limitations as specified checks should be as follows:

1. Connect an accurate high voltage meter between ground and anode of picture tube.

2. Operate receiver for at least 15 minutes at 120V AC line voltage, with a strong air signal or a properly tuned in test signal.

3. Enter the service mode and select the service No. "S21" and Bus data "01" (Y-mute on).

4. The voltage should be approximately, 32.8kV (at zero beam). If a correct reading cannot be obtained, check circuitry for malfunctioning components. After the voltage test, make Y-mute off to the normal mode.

32L-S500,32L-X2000

CL32S50,36L-X2000

For adjustments of this model, the bus data is converted to various analog signals by the D/A converter circuit.

Note: There are still a few analog adjustments in this series such as focus and master screen voltage.

Follow the steps below whenever the service adjustment is required. See "Table-C" to determine, if service adjustments are required.

1. Service Mode

Before putting unit into the service mode, check that customer adjustments are in the normal mode. Use the reset function in the video adjustment menu to ensure customer controls are in their proper (reset) position.

2. Service Number Selection

Once in the service mode, press the Ch-up or Chdown button on the remote controller or at the set. The service adjustment number will vary in increments of one, from "S01" to "C14". Select the item you wish to adjust.

3. Data Number Selection

Press the Vol-up or down button to adjust the data number.

SERVICE ADJUSTMENT NUMBER

To enter the service mode and exit service mode.

While pressing the Vol-up and Ch-up buttons at the sametime, plug the AC cord into a wall socket. Now the TV set is switched on and enters the service mode. To exit the service mode, turn the television off by pressing the power button.

DA T A NUMBER

CHANNEL

S01 55 2

Figure A.

32L-S500,32L-X2000

CL32S50,36L-X2000

SERVICE NUMBER

S01 PICTURE HEIGHT 71 00~127 S02 V-LINEARITY 27 00~31 S03 V-S CORRECTION 40 00~63 S04 PICTURE WIDTH 50 00~63 S05 E-W PARABOLA 15 00~63 S06 E-W CORNER 13 00~31 S07 TRAPEZIUM 65 00~127 S08 AGC SW 01 00~01 Must be set to "01" S09 PICTURE (SUB CONTRAST) 20 00~31 S10 TINT 31 00~63 S11 COLOR (SUB COLOR) 15 00~31 S12 BRIGHT (BRIGHTNESS) 58 00~101 S13 SHARP (SHARPNESS) 00 00~27 Must be set to "00" S14 V-POSITION 00 00~07 Must be set to "00" S15 H-POSITION 17 00~31 S16 R CUT-OFF 64 00~255 S17 G CUT-OFF 64 00~255 S18 B CUT-OFF 64 00~255 S19 G (R) DRIVE 64 00~127 S20 B DRIVE 64 00~127 S21 Y-MUTE/V-OFF 00 00~02 S22 Y-γ CURVE 03 00~03 Must be set to "03" S23 VSM PHASE 01 00~03 Must be set to "02" S24 APACON PEAK f0 01 00~07 Must be set to "01" S25 DC RESTORATION RATE 21 00~63 Must be set to "21" S26 DC RESTORATION LIMIT 00 00~03 Must be set to "00" S27 BLACK STRETCH POINT 03 00~07 Must be set to "03" S28 APL VS BPS 01 00~03 Must be set to "01" S29 B.L.C. 01 00~01 Must be set to "01" S30 DYNAMIC ABL POINT 04 00~07 Must be set to "04" S31 DYNAMIC ABL GAIN 04 00~07 Must be set to "04" S32 ABL POINT 03 00~07 Must be set to "03" S33 ABL GAIN 03 00~07 Must be set to "03" S34 Y-DL 01 00~01 Must be set to "00" S35 TOF-f0 07 00~07 Must be set to "07" S36 TOF-Q 04 00~07 Must be set to "04" S37 VSM GAIN 01 00~03 Must be set to "01" S38 OSD SL 00 00~01 Must be set to "00" S39 C-DECODE 161 00~255 Must be set to "161" S40 OSD POSITION 11 00~15 S41 NERGY SAVE 10 00~53 Must be set to "10" S42 VIDEO TINT 26 00~63 M01 INPUT LEVEL (ATT) 07 00~15 M02 MTS VCO 37 00~63 M03 FILTER 30 00~63 M04 WIDE BAND 35 00~63 M05 SPECTRAL 22 00~63 P01 PIP Y-LEVEL (CONTRAST) 43 00~127 P02 PIP TINT (TINT) 41 00~63 Must be set to "41" P03 PIP COLOR (COLOR-SAT) 55 00~127 P04 Y-OFFSET (Y-OFFSET) 09 00~31 Must be set to "09" P05 PIP H-POSI (HXA) 10 00~255 Must be set to "10" P06 BGP (HADJ) 00 00~15 Must be set to "00" P07 C01 C02 TINT-C 21 00~63 Must be set to "21" C03 COLOR-C (SUB COLOR) 15 00~63 Must be set to "15"

ADJUSTMENT ITEM

FREE RUN (FREE-RUN-ADJ) PICTURE-C (SUB CONTRAST)

INITIAL VALUE

DATA

RANGE

Must be set to "40" *36L-X2000 Must be set to "37"

"00" = NORMAL, "01" = No Y, "02" = No VERTICAL

11 00~15 Must be set to "11" 20 00~31 Must be set to "20"

ADJUSTMENT CONTENTS

Table - A

32L-S500,32L-X2000

CL32S50,36L-X2000

SERVICE

NUMBER

C04 BRIGHT-C (BRIGHTNESS) 58 00~101 C05 SHARP-C (SHARPNESS) 00 00~27 Must be set to "00" C06 V-POSITION-C 00 00~07 Must be set to "00" C07 H-POSITION-C 19 00~31 C08 R CUT-OFF-C 64 00~255 C09 G CUT-OFF-C 64 00~255 C10 B CUT-OFF-C 64 00~255 C11 G (R) DRIVE-C 64 00~127 C12 B DRIVE-C 64 00~127 C13 VSM GAIN-C 02 00~03 Must be set to "02" C14 COMP. C-DECODER 105 00~255 Must be set to "105"

ADJUSTMENT ITEM

INITIAL VALUE

DATA

RANGE

ADJUSTMENT CONTENTS

Table - A

SERVICE

NUMBER

I01 E-SOUND 01 00 / 01 01 01 I02 DSE 01 00 / 01 00 01 I03 SRS 01 00 / 01 00 01 I04 SRS 32, 36/27 01 00 / 01 01 01 I05 A/V IN 3/2 01 00 / 01 00 01 I06 V-CHIP 01 00 / 01 01 01 I07 PIP ON/OFF 01 00 / 01 01 01 I08 COMPNENT 01 00 / 01 00 01 I09 ENGL/ESPA 01 00 / 01 01 01 I10 DSE SHIPPED POSITION 00 00 / 01 00 00

ADJUSTMENT ITEM

INITIAL VALUE

DATA

RANGE 32L-S500, CL32S50 32/36L-X2000

ADJUSTMENT CONTENTS

Table - B

Holding down both the CH-up/down buttons on the TV set at service mode for more than 2 seconds will automatically write the above initial values into IC2002.

PART REPLACED

IC2001

IC401

IC2002 X

CRT X IC3001 X

IC1801

ADJUSTMENT

NECESSARY

UNNECESSARY

Data is stored in IC2002. The adjustment is needed to compensate for characteristics

of parts including IC401.

Holding down both the CH-up/down buttons on the TV set in the service mode for more than 2 seconds will automatically write the above initial values into IC2002. Then perform a complete adjustment.

Adjust items related to picture tube only. Adjust items related to MTS only (M01~M05).

Adjust items related to P-IN-P only (P01~P07).

NOTES

Table - C

SERVICE ADJUSTMENT

32L-S500,32L-X2000

CL32S50,36L-X2000

Screen Adjustment

1. Receive a good local channel.

2. Enter the service mode and select the service No. "S11" and set the data value to "00" to set the color level to minimum. (Record original data code under No. "S1 1" before changing) You may skip this step, if you selected a B/W picture or monoscope pattern.

3. Select the service No. "S21" and adjust the data value to "01", this turn off the luminance signal (Y-mute).

4. Select the service No. "S12" and adjust data value to "58".

5. Adjust the master screen control until the raster darkens to the point where raster is barely seen.

6. Adjust the service numbers "S16" red, "S17" green and "S18" blue to obtain a good grey scale with normal whites at low brightness level.

7. Select the service No. "S21" and reset data to "00". Select the service No. "S11" and reset data to obtain normal color level.

8. Reset the master screen control to obtain normal brightness range.

White Balance Adjustment

1. Receive a good local channel.

2. Enter the service mode and select the service No. "S1 1" and set to "00" (minimum color)(Record original data code under adjustment "S11" before changing). "S11" does not have to be adjusted, if you selected a B/W picture or monoscope pattern.

3. Alternately adjust the service numbers "S19" and "S20" until a good grey scale with normal whites is obtained.

4. Select the service No. "S11" and adjust data to obtain normal color level.

Sub-Tint Adjustment

1. Receive a good local channel.

2. Set customer tint control to center of it's range.

3. Enter the service mode and select the service No. "S10".

4. Adjust "S10" data value to obtain normal flesh tones.

Sub-Color Adjustment

1. Receive a good local channel.

2. Make sure the customer color control is set to center position .

3. Enter the service mode and select the service No. "S11".

4. Adjust "S11" data value to obtain normal color level.

Sub-Brightness Adjustment

1. Receive a good local channel.

2. Make sure the customer brightness control is set to center position.

3. Enter the service mode and select the service No. "S12".

4. Adjust "S12" data value to obtain normal brightness level.

Vertical Linearity Adjustment

1. Receive a good CATV channel.

2. Set to standard setting mode.

3. Enter the service mode and select the service No. "S02".

4. While observing the top and bottom of the screen, adjust "S02" data value to proper vertical linearity .

Vertical Phase Adjustment

Sub-Picture Adjustment

1. Receive a good local channel.

2. Make sure the customer picture control is set to maximum.

3. Enter the service mode and select the service No. "S09".

4. Adjust the data value to achieve normal contrast range.

1. Enter the service mode and select the service No. "S14".

2. Adjust data value to "00". Note: This must be set "00" when changed data

retrace line will appear.

Vertical-Size Adjustment

1. Receive a good local channel.

2. Enter the service mode and select the service No. "S01".

3. While observing the top and bottom of the screen, adjust "S01" data value to proper vertical size.

32L-S500,32L-X2000

CL32S50,36L-X2000

Side Pincushion Adjustment

1. Receive a good CATV channel or crosshatch pattern signal.

2. Set to standard setting mode.

3. Enter the service mode and select the service No. "S05".

4. Adjust the data of service No. "S05" so that the outermost line on the screen be straight.

Horizontal Position Adjustment

1. Receive a good CATV channel or crosshatch pattern signal.

2. Set to standard setting mode.

3. Enter the service mode and select the service No. "S15".

4. Adjust so that the left and right overscans are equal to each other.

Horizontal Size Adjustment

1. Receive a good CATV channel or crosshatch pattern signal.

2. Set to standard setting mode.

3. Enter the service mode and select the service No. "S04".

4. Vary the data of service No. "S04" to obtain the best horizontal size.

Corner Distortion Adjustment

1. Receive a good CATV channel or crosshatch pattern signal.

2. Set to standard setting mode.

3. Enter the service mode and select the service No. "S06".

4. Adjust so that the vertical lines should be straight.

Caption Position Adjustment (Horizontal)

1. Receive a good local channel.

2. Enter the service mode and select the service No. "S40".

3. A black text box appears on the screen. (see Figure B below)

4. Adjust "S40" data value so that text box is positioned in the center of the screen.

Sharpness Adjustment

1. Receive a good local channel.

2. Enter the service mode and select the service No. "S13".

3. Adjust data value to "00" (center of data range).

Trapezoidal Distortion Adjustment

1. Receive a good CATV channel or crosshatch pattern signal.

2. Set to standard setting mode.

3. Enter the service mode and select the service No. "S07".

4. Adjust so that the leftmost and rightmost vertical lines are parallel to each other.

Figure B.

32L-S500,32L-X2000

CL32S50,36L-X2000

MTS ADJUSTMENT

MTS Level Adjustment

1. Feed the following monaural signal to pin (14) of IC3001.

Monaural signal : 300Hz, 245mVrms

2. Connect the rms voltmeter to pin (39) of IC3001.

3. Enter the service mode and select the service No. "M01".

4. Adjust the data so that the rms voltmeter reads.

Spec : 490 ±10mVrms.

MTS VCO Adjustment

1. Keep the unit in no-signal state.

2. Connect the frequency counter to pin (39) of IC3001.

3. Connect a capacitor (100µF, 50V) in between positive(+) side of C3005 and ground.

4. Enter the service mode and select the service No. "M02"

5. Adjust the data so that the frequency counter reads.

Spec : 62.94 ±0.75kHz.

Filter Adjustment

1. Feed the following stereo pilot signal to pin (14) of IC3001 . Stereo pilot signal: 9.4kHz, 600mVrms.

2. Enter the service mode and select the service No. "M03".

3. Adjust the data until "OK" appears in position on the screen. Make sure the "OK" is displayed almost at the center of the data range.

Separation Adjustment

1. Connect the rms voltmeter to pin (39) of IC3001.

2. Receive the following composite stereo signal 1. Composite stereo signal: 30% modulation, left channel only, noise reduction on, 300Hz

3. Enter the service mode and select the service No. "M04".

4. Adjust the data until the AC voltage reading of the rms voltmeter is minimum.

5. Receive the following composite stereo signal 2. Stereo signal: 30% modulation, left channel only, noise reduction on, 3kHz

6. Enter the service mode and select the service No. "M05".

7. Adjust the data until the AC voltage reading of the rms voltmeter is minimum.

8. Take the above steps 1 thru 7 again for fine adjustment.

P-IN-P ADJUSTMENT

P-IN-P Y Level Adjustment

1. Receive a good local channel.

2. Enter the service mode and select the service No. "P01".

3. Adjust "P01" data value to obtain normal contrast level.

P-IN-P TINT Adjustment

1. Receive a good local channel.

2. Enter the service mode and select the service No. "P02".

3. Adjust data value to "41".

P-IN-P Color Adjustment

1. Receive a good local channel.

2. Make sure the customer color control is set to center position.

3. Enter the service mode and select the service No. "P03".

4. Adjust "P03" data value to obtain normal color level.

P-IN-P Y -Off Set Adjustment

1. Receive a good local channel.

2. Enter the service mode and select the service No. "P04".

3. Adjust data value to "09".

P-IN-P H-Position Adjustment

1. Receive a good local channel.

2. Enter the service mode and select the service No. "P05".

3. Adjust data value to "10".

P-IN-P Burst Gate Pulse (for MAIN)

1. Receive a good local channel.

2. Enter the service mode and select the service No. "P06".

3. Adjust data value to "00".

P-IN-P Free Run

1. Receive a good local channel.

2. Enter the service mode and select the service No. "P07".

3. Adjust data value to "11".

32L-S500,32L-X2000

CL32S50,36L-X2000

MODELS 32L-S500, CL32S50 CHASSIS LAYOUT

PWB-B

PWB-C

87109654321

PWB-F

PWB-A

32L-S500,32L-X2000

CL32S50,36L-X2000

1716 1918151413121110

32L-S500,32L-X2000

CL32S50,36L-X2000

MODELS 32L-X2000, 36L-X2000 CHASSIS LAYOUT

PWB-B

PWB-C

87109654321

PWB-F

PWB-A

32L-S500,32L-X2000

CL32S50,36L-X2000

1716 1918151413121110

32L-S500,32L-X2000

CL32S50,36L-X2000

MODELS 32L-S500, CL32S50 BLOCK DIAGRAM

87109654321

32L-S500,32L-X2000

CL32S50,36L-X2000

1716 1918151413121110

32L-S500,32L-X2000

CL32S50,36L-X2000

MODELS 32L-X2000, 36L-X2000 BLOCK DIAGRAM

87109654321

32L-S500,32L-X2000

CL32S50,36L-X2000

1716 1918151413121110

32L-S500,32L-X2000

CL32S50,36L-X2000

DESCRIPTION OF SCHEMATIC DIAGRAM

NOTES:

1. The unit of resistance "ohm" is omitted. (K=kΩ=1000Ω, M=MΩ)

2. All resistors are 1/16 watt, unless otherwise noted.

3. All capacitors are µ F, unless otherwise noted. (P=pF=µµF)

4. (G) indicates ±2% tolerance may be used.

5. indicates line isolated ground.

6. indicates hot ground.

VOLTAGE MEASUREMENT CONDITIONS:

1. All DC voltages are measured with DVM connected between points indicated and chassis ground, line voltage set at 120V AC and all controls set for normal picture unless otherwise indicated.

2. All voltages measured with 1000µ V B & W or Color signal.

WAVEFORMS

WAVEFORM MEASUREMENT CONDITIONS:

1. Photographs taken on a standard gated color bar signal, the tint setting adjusted for proper color. The wave shapes at the red, green and blue cathodes of the picture tube depend on the tint, color level and picture control.

indicates waveform check points (See chart, waveforms are measured from point indicated to chassis ground.)

AND SHADED ( ) COMPONENTS

= SAFETY RELATED PARTS.

MARK= X-RAY RELATED PARTS.

DRGANNES MARQUES å ET HACHRES ( ): PIECES RELATIVES A LA SECURITE. MARQUE ' : PIECS RELATIVE AUX RAYONS X.

This circuit diagram is a standard one, printed circuits may be subject to change for product improvement without prior notice.

87109654321

SCHEMATIC DIAGRAM: CONTROL AND CRT Unit

K9514WEK1·····(32L-S500, CL32S50)

K9514WEK2·····(32/36L-X2000)

32L-S500,32L-X2000

CL32S50,36L-X2000

MODELS 32L-S500, CL32S50

1716 1918151413121110

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