Sharp 27J-S100 User manual

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27J-S100/180/260
CJ27S10/26
SERVICE MANUAL
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.
COLOR TELEVISION
Chassis No. SN-71
Specifications are subject to change without prior
notice.
POWER INPUT............................................... 120 V AC 60 Hz
POWER RATING ............................................................ 126 W
PICTURE SIZE ...................................... 2,193cm2(340sq 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 ........................... 2.6W (at 10% distortion)
SPEAKER
SIZE ................................................................... 8cm(Round)
VOICE COIL IMPEDANCE .......................... 8ohm at 400 Hz
ANTENNA INPUT IMPEDANCE
VHF/UHF................................................75 ohm Unbalanced
TUNING RANGES
VHF-Channels...........................................................2thru 13
UHF-Channels ........................................................14thru 69
CATV Channels .......................................................1thru 125
............................................................... (EIA, Channel Plan)
ELECTRICAL SPECIFICATIONS
CONTENTS Page
»ELECTRICAL SPECIFICATIONS ............................................................................................. 1
»IMPORTANT SERVICE SAFETY PRECAUTION ..................................................................... 2
»LOCATION OF USER'S CONTROL.......................................................................................... 6
»INSTALLATIONAND SERVICE INSTRUCTIONS .................................................................... 9
»CHASSIS LAYOUT .................................................................................................................16
»BLOCK DIAGRAM ..................................................................................................................18
»PRINTED WIRING BOARD ASSEMBLIES............................................................................. 20
»SCHEMATIC DIAGRAMS ....................................................................................................... 26
»REPLACEMENT PARTS LIST ................................................................................................ 42
»PACKING OF THE SET .......................................................................................................... 60
MODELS
27J-S100/180/260
CJ27S10/26
27J-S180 27J-S100/S260
CJ27S10/26
SHARP ELECTRONICS CORPORATION
Service Headquarters: Sharp Plaza, Mahwah, New Jersey 07430-2135
SHARP ELECTRONICS OF CANADA LTD.
335 Britannia Road East Mississauga,Ontario L4Z 1W9 Canada
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S37W727J-S100

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27J-S100/180/260
CJ27S10/26
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 insulation material. The non-
isolated (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.
IMPORTANT SERVICE SAFETY PRECAUTION
5 Service work should be performed only by qualified service technicians who are thoroughly familiar with all
safety checks and servicing guidelines which follow:
X-RADIATION AND HIGHVOLTAGE
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 X-
radiation is capable of penetrating the shell of the
picture tube including the lead in glass material. The
important precaution is to keep the high voltage
below the maximum level specified.
2. It is essential that service personal 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 exceeds specifications.
4. When the high voltage regulator is operating properly
there is no possibility of an X-radiation problem.
Every time a color 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.
CAUTION: FOR CONTINUED
PROTECTION AGAINST A
RISKOF FIRE, REPLACE ONLY
WITH SAME TYPE 4A-125V
FUSE.
SERVICING OF HIGH VOLTAGE SYSTEM
AND PICTURETUBE
When servicing the high voltage system, re-
move 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.
4A 125V

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27J-S100/180/260
CJ27S10/26
IMPORTANT SERVICE SAFETY PRECAUTION
(Continued)
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 to 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 check must be repeated with the AC line cord plug
connection reversed. (IF necessary, a non-polarized
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 are indicative of a potential shock hazard and
corrective action must be taken before returning the
instrument to the customer.
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 specialsafety
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 . 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.

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27J-S100/180/260
CJ27S10/26
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 a deux systèmes de mise
à la terre qui sont séparés par un matériau isolant.
Le système de mise à la terre non-isolée (chaud) est
pour le circuit du régulateur de tension B+ et le circuit
de sortie horizontale. Le système de mise à la terre
isolé est pour les basses tensions C. C.B + et le circuit
secondaire du transformateur de haute tension.
REPARATION 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 kΩen 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
voltmètreà hautetension quidoit êtrepériodiquement
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.
PRECAUTION:POUR LA
PROTECTION CONTINUE
CONTRE LES RISQUES
D'INCENDIE, REMPLACER LE
FUSIBLE PAR UN FUSIBLE DE
MEME TYPE 4A-125V.
4A 125V

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27J-S100/180/260
CJ27S10/26
VERIFICATIONS CONTRE L'INCEN-DIE ET
LE CHOC ELECTRIQUE
Avant de rendre le récepteur à l'utilisateur,effectuer
les vérifications suivantes.
»Toucher 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
PRECAUTIONS A PRENDRE LORS DE LA REPARATION
(Suite)
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 kΩ10 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.
1.5k ohm
10w
0.15µF
TEST PROBE
TO EXPOSED
METAL PARTS CONNECT TO
KNOWN EARTH
GROUND
SONDE D'ESSAI
AUX PIECES
METALLIQUES
EXPOSEES
BRANCHER A UNE
TERRE CONNUE
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.
VoltmètreCA

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27J-S100/180/260
CJ27S10/26
LOCATION OF USER'S CONTROL
(27J-S100/CJ27S10)

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27J-S100/180/260
CJ27S10/26
LOCATION OF USER'S CONTROL
27J-S260/CJ27S26

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27J-S100/180/260
CJ27S10/26
27J-S180

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27J-S100/180/260
CJ27S10/26
CIRCUIT PROTECTION
The receiver is protected by a 4.0A fuse
(F701), mounted on PWB-A, wired into
one side of the AC line input.
X-RADIATION PROTECTOR CIRCUIT
TEST
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 strong air signal or properly tuned
in test signal.
3. Set service mode on, service No.19 and Bus data
"01" (Y-mute on ).
4. The voltage should be approximately 28.3kV(27J-
S100/S120,CJ27S10/26),29.3kV(27J-S180) (at
zero beam).
If a correct reading cannot be obtained, check
circuitry for malfunctioning components. After the
voltage test, make Y-mute off (normal mode).
INSTALLATION AND SERVICE INSTRUCTIONS
Note: (1) When performing any adjustments to resistor controls and transformers use non-metallic
screwdriver or TV alignment tools.
(2) Before performing adjustment, TV set must be on at least 15 minutes.
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) Select a local channel.
4) Connect a digital voltmeter to TP653 and make sure
that the voltmeter reads 11.4V.
5) Apply external 13.8V DC at TP653 by using an
external DC supply, TV must be shut off.
6) To reset the protector, unplug the ac cord and make
a short circuit between TP651 and TP652.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.

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27J-S100/180/260
CJ27S10/26
For adjustments of this model, the bus data is convered 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 service adjustment is required. See Figure "B" to determine if service adjust-
ments are required.
To enter the service mode and exit serv-
ice mode.
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 adjust menu to ensure
customer controls are in their proper ( reset ) position.
2. Service number selection
Once in the service mode, press the channel up or
channel down button on the remote transmitter or at
the set. the service adjustment number will vary in
increments of one, from S01 to P06(27J-S260/
CJ27S26),S01 to M05 (27J-S100/180/CJ27S10)
Select the item you wish to adjust.
3.Data number selection
Press the volume up or down button to adjust the
data number .
Figure B
S01 55 02
DATA NUMBER
CHANNEL
SERVICE ADJUSTMENT NUMBER
While pressing the Vol-up and Ch-up buttons at
once,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 shut the television off by
pressing the power button.

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27J-S100/180/260
CJ27S10/26
S01 PICTURE 55 00-7F
S02 TINT 46 00-7F
S03 COLOR 32 00-7F
S04 BRIGHTNESS 40 00-7F
S05 SHARPNESS 28 00-3F Must be set to "28"
S06 VERTICAL PHASE 00 00-07 Must be set to "00"
S07 HORIZONTAL PHASE 12 00-1F
S08 RF-AGC 2A 00-3F
S09 VERTICAL AMP 20 00-3F
S10 VCO 2C 00-7F
S11 R CUT-OFF 00 00-FF
S12 G CUT -OFF 00 00-FF
S13 B CUT-OFF 00 00-FF
S14 G GAIN 7F 00-FF
S15 B GAIN 7F 00-FF
S16 TRAP(3.58MHz) 00 00 or 01 Must be set to "00"
S17 BALANCE 20 00-3F Must be set to "20"
S18 C.C.POSITION 18 00-7F
S19 Y-MUTE 00 00,01,03 00=NORMAL 01=noY 03=NO VERTICAL
OP OPTION (set to each Model) 49 or 78 00-FF "49"=CJ27S10."78"=27J-S260/
CJ27S26,"49"=S100. "79"=S180
M01 MTS LEVEL 0A 00-0F
M02 STEREO-VCO 20 00-3F
M03 FILTER 1C 00-3F
M04 LOW SEPARATION 20 00-3F
M05 HIGH SEPARATION 1B 00-3F
P01 P in PY-LEVEL 30 00-7F
P02 P in P TINT 1B 00-3F Must be set to "1C".
P03 P in P COLOR 29 00-7F
P04 P in P Y-OFFSET 10 00-1F Must be set to "16".
P05 P in P H-Position 0B 00-FF Must be set to "0B".
P06 P in P BURST GATE PULSE 09 00-7F Must be set to "09".
SERVICE
NUMBER DATA ADJUSTMENT CONTENTS
INITIAL VALUE
ADJUSTMENT ITEM RANGE
27J-S260
CJ27S26
Holding down both the CH UP/DOWN keys on the TV set at service mode for more than 2 seconds will automati-
cally write the above initial values into IC2101.
ADJUSTMENT NOTES
PART REPLACED
IC2101
IC201
NECESSARY UNNECESSARY
x
x
The adjustment is needed to compensate for
characteristics of parts including IC201 and MTS level
(M01).
Data is stored in IC2101.
Holding down both the CH UP/DOWN keys on the
TV set at service mode for more than 2 seconds will
automatically write the above initial values into
IC2101.Then perform a complete adjustment.
x
CRT
IC3001 xAdjust items related to picture tube only.
Adjust items related to P-IN-P only (P01~P06).
Adjust items related to MTS only (M01~M05).
IC1801
(27J-S260
/CJ27S26) x
Table - B
IC2001 x
Table - A

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27J-S100/180/260
CJ27S10/26
ËË
ËË
Ë adjustment
VCO Adjustment
1. Connect a digital voltmeter between pin 44 of IC201
and ground.
2. Select a good local channel.
3. Enter the service mode. select adjustment "S10".
4. Adjust the data so that digital voltmeter shold read
2.2V
5. Adjustment is complete, remove the volt-meter,
return to "normal" mode.
RF AGC Adjustment
1. Have unit receive a good local channel.
2. Enter the service mode and select service
adjustment "S 08".
3. Set the data value to point where no noise or beat
appears.
4. Select another channel to confirm that no noise or
beat appears.
NOTE1 :You will have to come out of the service
mode to select another channel.
NOTE2 :Setting the data to "0 0" will pro-duce a
black raster.
Screen adjustment
1. Connect a digital voltmeter between TP852 and
TP853 on the CRT socket PWB.
Note:These test points may not be provided.
Then connect the voltmeter to both ends of R852
located near Q851 on the foil side.
2. Select a good local channel.
3. Enter the service mode and select service
adjustment "S03" and set the data value to "00" to set
the color level to minimum.(Record original data code
under adjustment "S03" before changing) You may
skip this step if you selected a B/W picture or
monoscope pattern.
4. Select service adjustment "S19" and adjust the data
value to "01" this turn off the luminance signal (Y-
mute).
5. Select service adjustment "S04" and adjust data
value to obtain 0.26 volts on the digital voltmeter.
6. Adjust the master screen cotrol untill raster darkens
to the point where raster is barely seen.
7. Adjust service adjustments "S11" red,"S12" green
and "S13" blue to obtain a good grey scale with
normal whites at low brightness level.
8. Select service adjustment "S19" and reset data to
"00". Select service adjustment "S03" and reset data
to obtain normal color level.
9. Remove digital voltmeter.
Reset master screen cotrol to obtain normal
brightness range.
White balance adjustment
1. Have unit receive a good local channel.
2. Enter the service mode. select service adjustment "S
03" and set to "00" ( minimum color)(Record original
data code under adjustment "S03" before changing)
. "S 03" does not have to be adjusted if you selected
a B/W picture or monoscope pattern.
3. Alternately adjust service adjustment data of "S14"
and "S15" untill a good grey scale with normal whites
is obtained.
4. Select service adjustment "S 03"and adjust data to
obtain normal color level.
Sub-picture adjustment
1. Have unit receive a good local channel.
2. Make sure the customer picture control is set to
maximum.
3. Enter the service mode and select service
adjustment "S 01".
4. Adjust the data value to achieve normal contrast
range.
Sub-Tint Adjustment
1. Have unit receive a good local channel.
2. Set customer tint control to center of it's range.
3. Enter the service mode and select service
adjustment "S 02".
4. Adjust "S 02" data value to obtain normal flesh tones.
Sub-color adjustment
1. Have unit receive a good local channel.
2. Make sure the customer color control is set to center
position .
3. Enter the service mode and select service
adjustment "S 03".
4. Adjust "S 03"data value to obtain normal color level.

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27J-S100/180/260
CJ27S10/26
-
Sub-brightness adjustment
1. Have unit receive a good local channel.
2. Make sure the customer brightness control is set to
center position.
3. Enter the service mode and select service
adjustment "S 04".
4. Adjust "S04"data value to obtain normal brightness
level.
Vertical-size and linearity adjustment
Ver-Lin-for 27J-S100/S260,CJ27S10/26
1. Have unit receive a good local channel.
2. Enter the service mode and select service
adjustment "S 09".
3. While observing the top and bottom of the screen,
adjust "S 09" data value to proper vertical size and
linearity.
4. Using the S501 switch,adjust for the best linearity.
Vertical phase adjustment
1. Enter the service mode and select service
adjustment "S 06".
2. Adjust data value to "00".
Note: This must be set "00" when changed data retrace
line will appear.
Horizontal position adjustment
1. Have unit receive a good local channel.
2. Enter the service mode and select service
adjustment "S 07".
3. Adjust "S 07" data value so that picture is centered.
Caption position adjustment (horizontal)
1. Have unit receive a good local channel.
2. Enter the service mode and select service
adjustment "S18".
3. A black text box appears on the screen ( see figure
C ) .
4. Adjust "S18" data value so that text box is positioned
in the center of the screen.
3.58MHz trap adjustment
1. Have unit receive a good local channel.
2. Enter the service mode and select service
adjustment "S16" .
3. This is a two position adjustment, " 00" is ON , "01"
is OFF.
4. Adjust data value to "00" for normal viewing.
Sharpness and Audio balance adjust-
ments
1. Have unit receive a good local channel.
2. Enter the service mode and select "S 05" for
sharpness and "S17" for balance.
• Sharpness adjustments
3. Adjust data value to "28" (center of data range) for
sharpness adjustment.
• Audio balance adjustments
4. Adjust data value to "20" (center of data range) for
Audio balance adjustment.
Figure C

- 14 -
27J-S100/180/260
CJ27S10/26
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
adjustment "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
adjustment "M05".
7. Adjust the data until the AC voltage reading of the
rms voltmeter is minimum.
8. Take the above steps 1 thru 8 again for fine
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 ant select the service
adjustment "M01".
4. Adjust the data so that the rms voltmeter should take
the reading below.
Spec. : 490 ; 10mVrms
Stereo 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
adjustment"M02"
5. Adjust the data so that the frequency counter should
take the reading below.
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
adjustment "M03".
3. Adjust the data at the point where "OK" appears on
the screen.The "OK" represents the approximate
center of the adjustable range of the data.
MTS ADJUSTMENT
P-IN-PY LEVEL adjustment
1. Recieve a good local channel.
2. Enter the service mode and select service adjust-
ment "P01".
3. Adjust "P01" data value to obtain normal contrast
level.
P-IN-P TINT adjustment
1. Recieve a good local channel.
2. Enter the service mode and select service adjust-
ment "P02".
3. Adjust data value to "1B".
P-IN-P COLOR adjustment
1. Recieve a good local channel.
2. Make sure the customer color control is set to
center position.
3. Enter the service mode and select service adjust-
ment "P03".
4. Adjust "P03" data value to obtain normal color
level.
P-IN-PY-OFF SET adjustment
1.Recieve a good local channel.
2. Enter the service mode and select service adjust-
ment "P04".
3. Adjust data value to "16".
P-IN-P H-POSITION adjustment
1. Recieve a good local channel.
2. Enter the service mode and select service adjust-
ment "P05".
3. Adjust data value to "0B".
P-IN-P BURST GATE PULSE(for MAIN)
1. Recieve a good local channel.
2. Enter the service mode and select service adjust-
ment "P06".
3. Adjust data value to "09".
P-IN-P ADJUSTMENT
(FOR 27J-S260/CJ27S26)

- 15 -
27J-S100/180/260
CJ27S10/26
å AND SHADED ( ) COMPONENTS
= SAFETY RELATED PARTS.
ç MARK = X-RAY RELATED PARTS.
This circuit diagram is a standard one, printed circuits
may be subject to change for product improvement
without prior notice.
WAVEFORMS
DESCRIPTION OF SCHEMATIC DIAGRAM
NOTE:
1. The unit of resistance "ohm" is omitted (K:1000
ohms, M:1 Meg ohm).
2. All resistors are 1/8 watt, unless otherwise noted.
3. All capacitors are µ F, unless otherwise noted P:
µµ F.
4. (G) indicates ; 2% tolerance may be used.
5. Indecates line isolated ground.
6. Indecates 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 1000 µ V B & W or Color
signal.
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.
2. : indicates waveform check points (See chart,
waveforms are measured from point
indicated to chassis ground.)
DRGANNES MARQUES-ET HACHRES ( )
: PIECES RELATIVES A LA SECURITE .
MARQUE ç :PIECS RELATIVE AUX RAYONS X.
WAVE FORMS

H
G
F
E
D
C
B
A
1 2 3 4 5 6 7 8 9 101112
27J-S100/180/260
CJ27S10/26 27J-S100/180/260
CJ27S10/26
- 16- - 17-
CHASSIS LAYOUT

27J-S100/180/260
CJ27S10/26
H
G
F
E
D
C
B
A
1 2 3 4 5 6 7 8 9 101112
27J-S100/180/260
CJ27S10/26
- 18 - - 19-
BLOCK DIAGRAM
CJ27S10 / CJ27S10

H
G
F
E
D
C
B
A
1 2 3 4 5 6 7 8 9 101112
27J-S100/180/260
CJ27S10/26 27J-S100/180/260
CJ27S10/26
- 20- - 21-
PRINTED WIRING BOARD ASSEMBLIES
PWB-A Wiring Side

27J-S100/180/260
CJ27S10/26
H
G
F
E
D
C
B
A
1 2 3 4 5 6 7 8 9 101112
27J-S100/180/260
CJ27S10/26
- 22- - 23-
PWB-A Chip Parts

H
G
F
E
D
C
B
A
1 2 3 4 5 6 7 8 9 101112
27J-S100/180/260
CJ27S10/26 27J-S100/180/260
CJ27S10/26
- 24- - 25-
PWB-B Wiring Side
PWB-H Wiring Side
PWB-R Wiring Side
PWB-R Chip Parts