Sharp LC-20B9U-S, LC-20B9U-SM Service Manual

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LC-20B8U-S LC-20B9U-S LC-20B9U-SM
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.
MODELS
LC-20B8U-S LC-20B9U-S LC-20B9U-SM
SHARP CORPORATION
This document has been published to be used for after sales service only. The contents are subject to change without notice.
LCD COLOR TELEVISION
CONTENTS
» IMPORTANT SERVICE SAFETY PRECAUTION.........................................................................................2
» SPECIFICATIONS ........................................................................................................................................5
» OPERA TION MANUAL .................................................................................................................................6
» DIMENSIONS ...............................................................................................................................................8
» REMOVING OF MAJOR P ARTS ........................................................................................................ ..........9
» ADJUSTING PROCEDURE OF EACH SECTION .....................................................................................13
» PUBLIC MODE SETTING PROCEDURE .................................................................................................. 23
» TROUBLE SHOOTING TABLE ..................................................................................................................29
» MAJOR IC INFORMATION.........................................................................................................................34
» BLOCK DIAGRAM......................................................................................................................................42
» OVERALL WIRING DIAGRAM ...................................................................................................................44
» DESCRIPTION OF SCHEMATIC DIAGRAM .............................................................................................46
» SCHEMATIC DIAGRAM
ËR/C, LED Unit ..........................................................................................................................................47
ËMAIN Unit.................................................................................................................................................48
ËSUB Unit ..................................................................................................................................................72
ËPOWER Unit ............................................................................................................................................76
ËINVERTER Unit .......................................................................................................................................86
» PRINTED WIRING BOARD ASSEMBLIES................................................................................................88
» REPLACEMENT PARTS LIST..................................................................................................................109
» PACKING OF THE SET............................................................................................................................127
Page
S45H7LC20B9US
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LC-20B8U-S LC-20B9U-S LC-20B9U-SM
CAUTION: FOR CONTINUED
PROTECTION AGAINST A RISK OF FIRE REPLACE ONL Y WITH SA ME TYPE F6701 (6.3A, 250V) AND F7701 (3.15A, 250V)FUSE.
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SAFETY NOTICE
Many electrical and mechanical parts in LCD television 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"
IMPORTANT SERVICE SAFETY PRECAUTION
Ë
Service work should be performed only by qualified service technicians who are thor­oughly familiar with all safety checks and the servicing guidelines which follow:
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 a 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 or other hazards.
WARNING
1. For continued safety, no modification of any circuit should be attempted.
2. Disconnect AC power before servicing.
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, and check 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, insulation materials, cabinet backs, adjustment and compartment covers or shields, isolation resistor-capacitor 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 110~240 volt AC outlet, and connect the DC power cable into the receiver's DC jack. (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 an earth ground.
Use an AC voltmeter having with 5000 ohm per volt, or higher, sensitivity or 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. All checks must be repeated with the AC cord plug connection reversed. (If necessary, a nonpolarized adaptor plug must be used only for the purpose of completing these checks.) Any reading of 0.75V peak (this corresponds to 0.5 mA. peak AC.) or more is excessive and indicates a potential shock hazard which must be corrected before returning the monitor to the owner.
A V
DVM
AC SCALE
1.5k ohm 10W
TO EXPOSED METAL PARTS
CONNECT TO KNOWN EARTH GROUND
0.15 µF
TEST PROBE
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LC-20B8U-S LC-20B9U-S LC-20B9U-SM
PRECAUTION: POUR LA
PROTECTION CONTINUE CONTRE LES RISQUES D'INCENDIE, REMPLACER LE FUSIBLE P AR UN FUSIBLE DE MEME TYPE F6701 (6.3A, 250V), F7701 (3.15A, 250V).
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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
Ë
Ne peut effectuer la réparation qu' un technicien spécialisé qui s'est parfaitement accoutumé à toute vérification de sécurité et aux conseils suivants.
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.
AVERTISSEMENT
1. N'entreprendre aucune modification de tout circuit. C'est dangereux.
2. Débrancher le récepteur avant toute réparation.
VERIFICA TIONS 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 110-240V. (Ne pas utiliser de transformateur d'isolation pour cet essai).
A l'aide de deux fils à pinces, brancher une résistance de 1.5k 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 5000/V pour mesurer la chute de tension en travers de la résistance.
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. T outes 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.
DVM
ECHELLE CA
1.5k ohm 10W
0.15 µF
SONDE D'ESSAI
AUX PIECES METALLIQUES EXPOSEES
BRANCHER A UNE TERRE CONNUE
A V
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LC-20B8U-S LC-20B9U-S LC-20B9U-SM
Precautions for using lead-free solder
1 Employing lead-free solder
"All PWBs" of this model employs lead-free solder. The LF symbol indicates lead-free solder, and is attached on the PWBs and service manuals. The alphabetical character following LF shows the type of lead-free solder. Example:
2 Using lead-free wire solder
When fixing the PWB soldered with the lead-free solder, apply lead-free wire solder. Repairing with conventional lead wire solder may cause damage or accident due to cracks. As the melting point of lead-free solder (Sn-Ag-Cu) is higher than the lead wire solder by 40°C, we recommend you to use a dedicated soldering bit, if you are not familiar with how to obtain lead-free wire solder or soldering bit, contact our service station or service branch in your area.
3 Soldering
As the melting point of lead-free solder (Sn-Ag-Cu) is about 220°C which is higher than the conventional lead solder by 40°C, and as it has poor solder wettability, you may be apt to keep the soldering bit in contact with the PWB for extended period of time. However, Since the land may be peeled off or the maximum heat-resistance temperature of parts may be exceeded, remove the bit from the PWB as soon as you confirm the steady soldering condition. Lead-free solder contains more tin, and the end of the soldering bit may be easily corroded. Make sure to turn on and off the power of the bit as required. If a different type of solder stays on the tip of the soldering bit, it is alloyed with lead-free solder . Clean the bit after every use of it. When the tip of the soldering bit is blackened during use, file it with steel wool or fine sandpaper.
Be careful when replacing parts with polarity indication on the PWB silk.
Indicates lead-free solder of tin, silver and copper.
Lead-free wire solder for servicing
Part No. Description Code ZHNDAi123250E J φ0.3mm 250g(1roll) BL ZHNDAi126500E J φ0.6mm 500g(1roll) BK ZHNDAi12801KE J φ1.0mm 1kg(1roll) BM
L Fa
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LC-20B8U-S LC-20B9U-S LC-20B9U-SM
SPECIFICATIONS
Items
LCD panel 20" Advanced Super View & BLACK TFT LCD Number of dots 2,359,296 dots XGA Video color systems N358, N443, PAL, PAL-M, PAL-N, SECAM, PAL-60
TV Standard (CCIR) NTSC/PAL-M/PAL-N
TV function
TV Tuning System PLL 181 ch. STEREO MTS+SAP CATV 125 ch.
Y/C FILTER 3D Y/C FILTER Brightness
2
Viewing angles H: 170° V: 170° Audio amplifier 2.1 W × 2 Speakers ø2.0 in. (ø5.0 cm), 2 pcs.
INPUT1 AUDIO-IN, COMPONENT-IN INPUT2 AUDIO-IN, COMPONENT-IN INPUT3 AUDIO-IN, VIDEO-IN, S-VIDEO-IN
Terminals INPUT4/OUTPUT AUDIO-IN, VIDEO-IN/AUDIO-OUT, VIDEO-OUT
INPUT5 PC Connector: 15-pin mini D-sub PC AUDIO: Mini-jack for stereo (ø3.5 mm) Antenna F-Type Headphone Mini-jack for stereo (ø3.5 mm)
OSD language English/Spanish/French Power supply AC 110-240V, 50/60Hz Power consumption 81 W (0.6 W standby): AC 120V Weight 19.4 lbs. (8.8 kg), w/o accessories
ËAs
a part of policy of continuous improvement, SHARP reserves the right to make design and specification changes for the LCD TV
set
improvement
without prior notice. The performance specification figures indicated are nominal values of production units. There
may
be
some
deviations from these values in individual units.
Model
LC-20B8U/LC-20B9U
480 cd/m
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LC-20B8U-S LC-20B9U-S LC-20B9U-SM
OPERATION MANUAL
Part Names of the Main Unit
Controls
INPUT, CH (
)/(
), VOL (–)/(+) and MENU on the main unit have the same functions as the same buttons on the remote control.
Fundamentally, this operation manual provides a description based on operation using the remote control.
Headphone jack (
)
Plug the headphone mini-plug into the headphone
jack located
on the front of the main unit.
OPC (Optical Picture Control)
sensor
Remote sensor
OPC (Optical Picture Control) indicator
The OPC indicator lights up green when "OPC" is
set to "ON".
POWER/WAKE UP TIMER indicator
POWER/WAKE UP TIMER indicator lights up green when the
power is on, and red when in the standby mode (the indicator will
not light when the main power is off), and orange when the wake-
up timer is set (the indicator will light when in the standby mode).
To change the vertical angle of the LCD TV
set, tilt the screen up to 2.5 degrees forward
or 10 degrees backward. The LCD TV set can
also be rotated up to 12 degrees to right and
left. Please adjust the angle so that the LCD
TV set can be watched most comfortably.
POWER
Upper control panel
INPUT
MENU
CH (Channel) (
)/(
)
VOL (Volume)
(–)/(+)
Speaker
Tilt the display by grabbing onto the
carrying handle while securely holding
down the stand with your other hand.
How to adjust the angle
Listening with Headphones
ËPlug
the headphone mini-plug into the headphone jack located on the front of the main unit.
Headphones are not included in the supplied accessories.
No sound is heard from the main unit speakers when a headphone mini-plug is connected into the headphone jack.
Do not set the volume at a high level. Hearing experts advise against extended listening at high volume levels.
Ë On-screen display
20
VOLUME
Adjust
the sound volume
using VOL
(
+
)/(
) on
the
remote
control.
Headphones
Speaker
Terminals
)
(
Carrying handle
Rear View
Y
P
B
P
R
AUDIO (L)
AUDIO (R)
Y
P
B
P
R
AUDIO (L)
AUDIO (R)
AUDIO
ANALOG RGB
S-VIDEO
AUDIO (L)
AUDIO (R)
VIDEO
AUDIO (L)
AUDIO (R)
VIDEO
INPUT2
(COMPONENT)
ANT
(Antenna terminal)
AC INPUT
(AC 110-240 V)
INPUT5
(PC-IN)
INPUT4/
OUTPUT
INPUT1
(COMPONENT)
INPUT3
Round lock for
Kensington Security
Standard slot*
)
(
How to Fix the Cables
Secure cables and cords with the supplied cable clamp so that they do not get caught when mounting the cover.
Cable clamp
Pull down the hook
to open the cover.
* Using the Kensington Lock
This LCD TV set has a
Kensington Security Standard
slot for use with a Kensington
MicroSaver Security System.
Refer to the information that
came with the system for
instructions on how to use it to
secure the LCD TV set.
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LC-20B8U-S LC-20B9U-S LC-20B9U-SM
Part Names of the Remote Control
DISPLAY
Displays the receiving channel and
the current time for 10 seconds.
AV MODE
Selects preferred AV MODE.
BACKLIGHT
Adjusts the brightness of the screen.
' /" /\/| (Cursor control)
Selects a desired item on the screen.
MENU
Displays the menu screen.
INPUT
Switches the input source between
INPUT1, INPUT2, INPUT3, INPUT4,
INPUT5 (PC) and TV mode.
CC
Displays Closed Caption subtitles.
FLASHBACK
Returns to the previous channel.
CH (
)/(
)
Selects a channel.
Channel Select
Sets the channel.
POWER
Switches the Liquid Crystal
Television power on or standby.
PIC.FLIP
Sets the orientation of the picture.
SLEEP
Sets the sleep timer.
MENU RETURN
Returns to the previous screen.
ENTER
Executes a command.
MUTE
Mutes the sound.
AUDIO ONLY
Outputs audio without screen image.
VOL (+)/(–)
Sets the volume.
MTS
Selects audio settings.
TV Signals in Your Region
This product is factory set to comply with the TV broadcasting system in the United States. For Brazil, Argentina and Uruguay,
set the color system according to the country before using this product by following the table below.
U.S.A.
Color: NTSC NTSC (N358) NTSC (N358)
TV ch: US ch US ch US ch
Not required or N/A
Canada, Mexico, Color: NTSC NTSC (N358) NTSC (N358)
Latin America TV ch: US ch US ch US ch
Not required or N/A
Brazil
Color: PAL-M NTSC (N358) NTSC (N358) Set color system to
TV ch: US ch US ch US ch PAL-M
Argentina, Color: PAL-N NTSC (N358) NTSC (N358) Set color system to
Uruguay TV ch: US ch US ch US ch PAL-N
The 3 Dimensional Y/C separation circuit* only works when the color system is set to N358 in TV mode and Video mode.
* The 3 Dimensional Y/C separation circuit is used to remove flickering and color bleeding.
* The 3 Dimensional Y/C separation circuit does not function when S-VIDEO or COMPONENT signals are input.
TV
broadcasting
system
Factory setting of color system User setting
TV Video TV/Video
Country
Installing Batteries in the Remote Control
Before using the LCD TV set for the first time, install the two "AAA" size batteries supplied in the remote control. When the
batteries become depleted and the remote control fails to operate, replace the batteries with new "AAA" size batteries.
1
Open the battery cover.
2
Insert two "AAA" size batteries.
3
Close the battery cover.
Ë Place batteries with their
terminals corresponding
to the (+) and (–)
indications in the battery
compartment.
Caution!
Precautions regarding batteries
Ë Improper use of batteries can result in a leakage of chemicals and/or explosion. Be sure to follow the instructions below.
Place batteries with their terminals corresponding to the (+) and () indications.
Different types of batteries have different characteristics. Do not mix batteries of different types.
Do not mix old and new batteries. Mixing old and new batteries can shorten the life of new batteries and/or cause old
batteries to leak chemicals.
Remove batteries as soon as they are depleted. Chemicals that leak from batteries can cause a rash. If chemical
leakage is found, wipe it off with a cloth.
The batteries supplied with the LCD TV set may have a shorter operating time due to storage conditions.
If the remote control is not to be used for a long period of time, remove the batteries from the remote control.
Preparation
Ë Engaging the lower
claw with the remote
control, close the
cover.
Using the Remote Control
Ë Use the remote control by pointing it towards the remote sensor
window of the main unit. Objects between the remote control and
sensor window may prevent proper operation.
Cautions regarding use of the remote control
Ë Do not apply shock to the remote control. In addition, do not
expose the remote control to liquids, and do not place it in an area
with high humidity.
Ë Do not install or place the remote control in direct sunlight. The
heat may cause deformation of the unit.
Ë The remote control may not work properly if the remote sensor
window is in direct sunlight or strong lighting. In such a case,
change the angle of the lighting or main unit, or operate the
remote control closer to the remote sensor window.
Ë Slide the cover while
pressing the (
) part.
Headphone jack
OPC indicator
POWER/WAKE UP TIMER
indicator
Remote sensor
OPC sensor
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LC-20B8U-S LC-20B9U-S LC-20B9U-SM
DIMENSIONS
Unit: inch (mm)
)(
1319/32(345)
17
31
/64(444)
25
1
/8(638)
5
9
/32(134)
9
17
/32(242)
16
11
/64(410.5)
15
21
/
64
(389)
2
9
/
64
(54)
17
29
/
64
(443)
12
5
/
32
(308.4)
10
3
/
32
(256)
3
15
/
16
(100)
1
25
/
32
(45)
315/16(100)
3
5
/8(92)211/16(68)
16
17
/
64
(413)
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LC-20B8U-S LC-20B9U-S LC-20B9U-SM
REMOVING OF MAJOR PARTS
1. Remove the stand cover fixing screw (1 pc.).
2. Remove the stand fixing screws (4 pcs.).
3. Remove the carrying handle fixing screws (4 pcs.).
4. Remove the terminal cover.
5. Remove the terminal screws (4 pcs.).
6. Remove the cabinet B fixing screws (9 pcs.).
7. Remove the cabinet B after opening from the direction of an arrow.
8. Remove the stand angle fixing screws (5 pcs.).
9. Disconnect all the connectors from all the PWBs.
Cabinet B
4
5
7
5
5
2
3
1
6
Carrying Handle
Cabinet A
Terminal Cover
Stand
Stand Cover
P6706
P6705
P6704
P6703
P6702
P6707
SC7701
SC7702
P7705
SC2004
SC2003
SC1201
SC2001
SC3402
SC4001
Stand Angle
Inverter PWB
Sub PWB
Power PWB
R/C, LED PWB
9
9
9
9
9
8
8
9
Main PWB
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LC-20B8U-S LC-20B9U-S LC-20B9U-SM
10. Remove the inverter PWB fixing screws (3 pcs.).
11. Remove the power PWB fixing screws (6 pcs.).
12. Remove the sub PWB fixing screws (4 pcs.).
13. Remove the chassis frame fixing screws (3 pcs.).
14. Remove the R/C, LED PWB fixing screws (2 pcs.).
15. Remove the main PWB fixing screws (4 pcs.).
16. Remove the 4 lock screws each from the right and left speakers and take out both the speakers.
Power PWB
Chassis Frame
Sub PWB
Inverter PWB
Speaker (R)
10
16
15
14
16
11
12
13
Speaker (L)
Main PWB
R/C, LED PWB
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LC-20B8U-S LC-20B9U-S LC-20B9U-SM
» Precautions in handling the LCD panel
1. Handle it in a clean room. (above 50% humidity)
2. The worker must wear an earth band.
3. Be careful not to drop, vibrate and shock the panel.
4. Use an ionizer. (within 30 cm)
17. Remove the three lock screws from the LCD panel, and detach the LCD panel unit.
18. Remove the prism sheet (H), (V), diffusion sheet and diffusion plate.
19. Remove the lamp unit from the lamp holder (top). Then detach the (bottom)-left and (bottom)-right lamp holders.
20. Remove the reflection sheets (top) and (bottom) from the back shield.
Lamp Holder (Bottom)-Left (LHLDZA368WJKZ)
Lamp Holder (Top), x2 (LHLDZA365WJKZ)
Lamp Unit, x6 (KLMP-A034WJZZ)
Reflection Sheet (Bottom) (PSHEPA206WJZZ)
Lamp Holder (Bottom)-Right (LHLDZA367WJKZ)
Back Shield (PSLDMA653WJFW)
Lamp Holder (Top), x2 (LHLDZA365WJKZ)
Diffusion Sheet (PSHEPA204WJZZ)
Prism Sheet (H) (PSHEPA203WJZZ)
Diffusion Plate (PCOVUA035WJZZ)
Prism Sheet (V) (PSHEPA208WJZZ)
20" LCD Panel Unit
17
Reflection Sheet (Top) (PSHEPA205WJZZ)
20
18
19
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LC-20B8U-S LC-20B9U-S LC-20B9U-SM
Step Part No. Description
1 QCNW-C458WJQZ
Extension Cable 80-pin Main (SC1201)-LCD Panel (CN1) 2 QCNW-D402WJQZ Extension Cable 23-pin Main (SC2001)-Sub (P3401) 3 QCNW-C461WJQZ Extension Cable 15-pin Main (SC2003)-Power (P7703) 4 QCNW-D402WJQZ Extension Cable 23-pin Main (SC2004)-Power (P7702)
6, 8 QCNW-C460WJQZ
Extension Cable 19-pin Power (SC7701)-Inverter (P6701)
»Precautions in servicing the side-B (backside) of the main PWB unit
1. Disconnect the FFC for connection between the main PWB (SC1201) and LCD panel (CN1), and then connect the service-specific extension FFC (flat cable) (QCNW-C458WJQZ).
2. Disconnect the SC2001 side of the lead from between the main PWB (SC2001) and the sub PWB (P3401), and then connect the service-specific extension cord (QCNW-D402WJQZ).
3. Disconnect the SC2003 side of the lead from between the main PWB (SC2003) and the power PWB (P7703), and then connect the service-specific extension extension cord (QCNW-C461WJQZ).
4. Disconnect the SC2004 side of the lead from between the main PWB (SC2004) and the power PWB (P7702), and then connect the service-specific extension cord (QCNW-D402WJQZ).
5. Remove the lock screws (4pcs.) from the main PWB, detach the PWB from the chassis frame, and then turn it over to service.
»Precautions in servicing the Chip Parts side (backside) of the inverter PWB unit
6. Disconnect the SC7701 side of the lead from between the power PWB (SC7701) and the inverter PWB (P6701), and then connect the service-specific extension cord (QCNW-C460WJQZ).
7. Remove the lock screws from the inverter PWB and then turn it over to service.
»Precautions in servicing the Chip Parts side (backside) of the power PWB unit (main/sub PWB)
8. Disconnect the SC7701 side of the lead from between the power PWB (SC7701) and the inverter PWB (P6701), and then connect the service-specific extension cord (QCNW-C460WJQZ).
9. Remove the PWB fixing screws (main unit: 4 pcs., sub unit: 4 pcs., power unit: 6 pcs.)
P6701 SC7701
P7702
SC2004
SC1201
CN1
SC2003
SC2001
P3401P7703
Main PWB (Side-B)
Power PWB (Backside)
Sub PWB
8
6
7
3
1
5
4
9
2
Inverter PWB
(Backside)
Power PWB Sub PWB
Main PWB
Inverter PWB
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LC-20B8U-S LC-20B9U-S LC-20B9U-SM
ADJUSTING PROCEDURE OF EACH SECTION
1. Preparations before adjustment
(1) Keep the AC power cable directly plugged in a wall outlet.
AC110V~240V
[1] Adjustment procedures 1-1. Adjusting the checker
Power on (initialization) Setting the model number and screen size
1-2. Finishing process adjustments
Assembling Power on Adjustment process mode (bus connector) AD converter level, common bias, TAMP and white balance (cut-off and gain) adjustments
[2] Entering the checker mode/adjustment process mode 2-1. Calling the checker mode * Keep KEY-5 (pin (82) of microprocessor) at "L" level and turn on the power.
KEY-4 KEY-5 Mode shift
H H Normal mode (Fresh data written and saved on EEPROM)
L H Shift to adjustment process mode
HL
Operation with master ROM settings in the checker mode (EEPROM still brand-new after the checker mode)
LL
EEPROM initialized and microprocessor's master settings written (process adjustment values not yet written)
2-2. Calling the adjustment process mode There are two ways to call this mode. * Keep KEY-4 (pin (81) of microprocessor) at "L" level and turn on the power. * For servicing:1 Hold down the "INPUT" and "VOL (–)" keys at once, and turn on the power switch. ("K" appears
at the top left onscreen to indicate that the checker mode is on.) 2 Press the "CH (Ù)" and "VOL (–)" keys at once. (The adjustment process mode screen shows up.)
.....
T o quit the mode, turn of f the power (using the power
switch on the set or the remote controller).
[3] Key operation ËBasic operation *Using the "CH (ù)/(Ù)" keys, select a receiving channel. *Using the "INPUT" key, select an input. *Using the "cursor up/down keys, select an adjustment item. (When the "cursor down" key is pressed at the bottom
item of a page, the top item on the next page will be selected. When the "cursor up" key is pressed at the top item
of a page, the bottom item on the previous page will be selected.) *Using the "VOL (+)/(–)" or "cursor right/left" keys, adjust the selected item. *Press the "MENU" key, and the next item will be selected. (When the "MENU" key is pressed at the bottom item
of a page, the top item on the next page will be selected.) ËHierarchical shift
*Press the "ENTER" key on any item other than I2C DATA on Page 9, the setting page of the item will show up. *To quit the setting page, press the "FLASHBACK" key.
Page 14
14
LC-20B8U-S LC-20B9U-S LC-20B9U-SM
(Onscreen display of adjustment process menu page 1)
0112
M
I E P V E
3
O N R U
-
X
4
D C R B C T
5
E H
O
L
H
6
L
R
I I
C
7
S
C
P
O
8
I
N
N
9
Z O
M
T
10
E
O
R
11
R D
O
12
E E
L
13S14E15T16 17 18 19 20 21 22A23
6
O
O
24
2 2
F
F
25
8 0 0 F 1 F
26 0 1 2 3 4 5 6 7 8
|
[5] Adjustments 5-1. AD converter level adjustment 1 D3 input
1) Feed only the Y component of D3 75% color bar signal. Equipment used: LEADER LT446 Signal name: COLOR BAR 75% Setting: 01: 1920 x 1080 / 60i H: 33.72 kHz, V: 29.97 Hz
2) Turn on the AUTO GAIN-OFFSET1 item on adjustment process page 7.
2 PC input
1) Feed the VGA white 0% signal.
2) Turn on the AUTO OFFSET2 item on adjustment process page 8.
3) Feed the VGA white 100% signal.
4) Turn on the AUTO GAIN2 item on adjustment process page 8.
5-2. Common bias adjustment
1) Adjust the "COM BIAS" setting on adjustment process page 2 so that flickering gets to minimum. With the setting changed, the flicker check built-in test pattern will show up.
5-3. T AMP adjustment
1) Receive the 75% standard color bar signal in the TV input mode.
2) If the "YDATA" reading on adjustment process page 2 is not within the range in the table below, readjust the "NTSC TAMP" item on the same page and make sure the "YDATA" reading is as specified. * Note that the setting range may be different from model to model.
3) Then add 6 to the "NTSC TAMP" setting and enter this value for "PAL-M TAMP" and "PAL-N TAMP".
Model LC-20B8U LC-20B9U
Setting 155-158 155-158
[4] Initialization 4-1. Connect both pins (81) and (82) of IC2001 (microprocessor) to GND, and turn on the power. 4-2. Make sure the model number "A628" is selected. *Note: This setting cannot be changed. 4-3. Make sure "20" (inches) is selected for the screen size. *Note: This setting cannot be changed.
Page 15
15
LC-20B8U-S LC-20B9U-S LC-20B9U-SM
Reference (Onscreen display of adjustment process menu page 2)
5-4. White balance adjustment
1) Adjustment procedure (Call the AV input mode with INPUT3 or INPUT4.) Adjust the RGB CUTOFF2 setting for the 40% white level, and the RGB-GAIN setting for the white 80% level. (1) Adjustment [Input signal] White 80% (191 gradations) and white 40% (92 gradations) signals [Adjustment value] RGB CUTOFF2 and RGB-GAIN settings on adjustment process page 3
Adjustment spec. Inspection spec.
White 80% x=0.291 ±0.006 ±0.012 Radius from center point
y=0.300 ±0.006 ±0.012 Radius from center point
(Reference brightness: 300 cd/m2)
White 40% x=0.276 ±0.006 ±0.012 Radius from center point
y=0.282 ±0.006 ±0.012 Radius from center point
(Reference brightness: 50 cd/m2)
Cut-off (RGB CUTOFF2)
: Fix the G setting at 0. Vary the R and B settings. Adjustable range ±30. Gain (RGB-GAIN): Reduce the settings of the two stronger colors. Adjustable range 0 to -70. (The values are based on the Minolta CA-210.)
[6] Factory settings 6-1. Hold down the "INPUT" and "VOL (–)" keys on the set at once, and turn on the power. Hold down the "CH (ù)"
and "VOL (+)" keys at once. ("SETTING COMPLETE" appears on the screen.) *Note: Immediately after the factory settings have been made, turn off the power switch. (The next time the power is turned on, the set gets started in the EZ SETUP mode. An extra key-in just after the factory setting may cause the set to malfunction.)
0212
C T Y T N P P
3
O A D A T A A
4
M M
A
M
S L L
5
P
T P C
-
-
6
B
A
M
N
7
I
L
H T
8
A
A T T
9
S
M
A A
10
P M M
11
P P
12 13 14 15 16 17 18 19 20 21
4 1 1 1
22
5 5 5 5 8 9 9
23
0 5 7 8 5 1 1
24 25 26 0 1 2 3 4 5 6 7 8
Y Data
(White 75%)
|
SETTING COMPLETE
Page 16
16
LC-20B8U-S LC-20B9U-S LC-20B9U-SM
Setting ranges Initial values
(TV) (INPUT1) (INPUT2) (INPUT3)
MENU PICTURE AV MODE STANDARD/DYNAMIC/DYNAMIC(FIXED)/MOVIE/GAME DYNAMIC DYNAMIC DYNAMIC DYNAMIC DYNAMIC
(Except PC) (PC)
ON/OFF OFF OFF
BRIGHT/NORMAL/DARK/VARIABLE VARIABLE VARIABLE
(STANDARD) (DYNAMIC) (DYNAMIC (FIXED)) (MOVIE) (GAME) (PC)
(INPUT4)
17 17 17 7
17(BRIGHT)
0 ~ 60
9
30 40 40 30
– – – – –
BRIGHTNESS
-30 ~ +30
-30 ~ +30
-30 ~ +30
-30 ~ +30
30 0000 0 0000 0000
COLOR -30 ~ +30
0
+5 +5 0
TINT -30 ~ +30
0
SHARPNESS -10 ~ +10
0
(Except PC) (PC)
ADVANCED COLOR TEMP. USER/HIGH/MIDDLE/LOW MIDDLE
0
GREEN 0 BLUE 0
0 0 0
I/P SETTING INTERLACE/PROGRESSIVE PROGRESSIVE
ON/OFF ON/OFF
QUICK SHOOT ON/OFF ON
YES/NO NO Always select "NO" to move to the setting screen. YES/NO NO Always select "NO" to move to the setting screen.
AUDIO TREBLE -10 ~ +10 0
BASS -10 ~ +10 0
0
BALANCE -10(L) ~ +10 (R)
0
INPUT1~4/INPUT5 (PC)/TV
RESET YES/NO NO Always select "NO" to move to the setting screen.
SETUP CH-SETTING YES/NO
LANGUAGE ENGLISH/ESPANOL/FRANCAIS CH SETTING ON/OFF ON AUTO CLOCK ON/OFF ON
YES/NO YES
AIR/CABLE AIR/CABLE AIR
– –
– –
MTS STEREO/SAP/MONO STEREO CLOCK SET
INPUT5 (PC)
AUTO/MANUAL
AUTO AUTO/[2]~[69] or [1]~[125] AUTO MANUAL DST
ON/OFF
TIME 12 : 00AM~11 : 59PM 12 : 00AM The clock setting is yet to be made. Follow the display at left to move to the MANUAL CLOCK setting screen.
ON/OFF ON
AUTO
IN/OUT /OUT× IN
V-CHIP BLOCK SECRET No. 4-DIGIT ENTRY CLEAR
MPAA G
PG NONE
NONE NONE NONE NONE NONE
NONE
PG-13 R NC-17 X
TV GUIDELINES TV-Y
TV-Y7 NONE TV-G TV-PG (NONE)/BLOCK
(NONE)/BLOCK
(NONE)/BLOCK
(NONE)/BLOCK
(NONE)/BLOCK
(NONE)/BLOCK
(NONE)/BLOCK
(NONE)/BLOCK
(NONE)/BLOCK
(NONE)/BLOCK
NONE TV-14 (NONE)/BLOCK NONE TV-MA (NONE)/BLOCK NONE BLOCK CONTENT (BLANK)/BLOCK BLANK (UN BLOCK)
L (BLANK)/BLOCK BLANK (UN BLOCK) S (BLANK)/BLOCK BLANK (UN BLOCK) V (BLANK)/BLOCK
(BLANK)/BLOCK
BLANK (UN BLOCK)
FV BLANK (UN BLOCK)
(NONE)/BLOCK NONE
NONE
NONE
C8+ G
C
PG NONE 14+ NONE 18+ NONE
CAN.FRENCH RATINGS G NONE
8 ans+ NONE 13 ans+ NONE 16 ans+ NONE 18 ans+ NONE
STATUS ON/OFF OFF
OFF/CC1/CC2/T1/T2 OFF
(TV)
INPUT4 IN/OUT
(INPUT3) (INPUT4)
(* N358/PAL-M/PAL-N IN TV MODE) N358 AUTO
PC SETTING
AUTO
FINE SYNC. H-POS. -30 ~ +30 0
V-POS. -15 ~ +15 0 CLOCK -15 ~ +15 0
1024x768 (60Hz)
PHASE -15 ~ +15 0 RESET NO Always select "NO" to move to the setting screen.
LANGUAGE ENGLISH/ESPANOL/FRANCAIS
OPTION (TV) (INPUT1) (INPUT2) (INPUT3) (INPUT4)
AUDIO ONLY ON/OFF BLUE SCREEN ON/OFF
OFF/30/60/90/120/150MIN OFF (CLEAR) Always select "OFF" to move to the setting screen.
TIMER ON/OFF
TIME 12 : 00AM~11 : 59PM 12 : 00AM
VOL. 0~60 20
ENABLE/DISABLE DISABLE
ENABLE/DISABLE DISABLE POWER MANAGEMENT ON/OFF OFF PICTURE FLIP NORMAL/MIRROR/ROTATE/UPSIDE DOWN NORMAL
(Items not on the menu) Initial values EZ SETUP AUTO START ON LAST CHANNEL
2ch
LAST TV/INPUT TV FLASH BACK 2ch SKIP DATA_CATV ALL SKIP SKIP DATA_AIR ALL SKIP VOLUME 20 LINE OUT LEVEL (AT VAO) 0 EDS CH (FOR AUTO) NOT ESTABLISHED
HOTEL MODE POWER ON FIXED VARIABLE
60
VOLUME FIXED VARIABLE REMOTE CONTROL USER CONTROL
RESPOND
RESPOND
RESPOND
ON SCREEN DISPLAY
YES
START MODE NORMAL INPUT MODE FIXED VARIABLE
ENGLISH
YES
NONE
D
CH SEARCH
PC SOUND SELECT
NOISE CLEAN
RESET
BACKLIGHT
OPC
RED
FILM MODE
TIME DISPLAY
OFF
OFF
OFF
MIDDLE
4 : 3/16 : 9/ZOOM/STRETCH
CH1~125/INPUT1~INPUT4
OFF
OFF
OFF
ENGLISH
YES/NO
INPUT SIGNAL
COLOR SYSTEM
CLOSED CAPTION
VIEW MODE
SLEEP TIMER WAKE UP TIMER
CHANNEL
NO SIGNAL OFF NO OPERATION OFF
MAXIMUM VOLUME
MENU BUTTON
AUTO/N358/N443/PAL/PAL-M/PAL-N/SECAM/PAL60
1024×768 (60Hz)/800×600(60Hz)/ 800×600(56Hz)/640×480(60Hz)
CH2
4 : 34 : 34 : 34 : 34 : 3
1 (DARK) ~ 9 (NORMAL) ~ 17 (BRIGHT)
CONTRAST
RESET
EZ-SETUP
START
CH MEMORY
CAN.ENGLISH RATINGS
6-2. Intial value of factory settings
Page 17
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LC-20B8U-S LC-20B9U-S LC-20B9U-SM
Page No. Item
Initial
Function
Response precautions on servicing
Value (Do not change other items than designated.)
1 MODEL A628
MODEL NAME SELECTION CANNOT BE CHANGED.
INCH SIZE 20
SCREEN SIZE SELECT (20-INCH AND USED FOR INITIALIZATION, NOT 13/15-INCH SETTINGS NOT MODIFIABLE FOR OTHER CASES. SWITCHABLE IN CASE OF DATA FOR OTHER CASES. DATA REWRITE DIFFERENT SYSTEMS) AND READJUSTMENT REQUIRED WHEN
WHEN INITIALIZED.
ERROR NO RESET 0
LAMP ERROR COUNT AND RESET SEE THE LAMP ERROR DETECTION.
PUBLIC MODE OFF
HOTEL MODE SETTING NOT USED
V-CHIP 1
VCHIP LINE MUTE SETTING NOT USED
EXT CONTROL OFF
BUS, UART OPEN NOT USED
ROM AND GAIBU VERSION NUMBERS DISPLAYED AT THE BOTTOM.
VIDEO ADJUSTMENT
2 COM BIAS 410
COMMON BIAS ADJUSTMENT SEE THE ADJUSTMENT PROCEDURES.
TAMP L 155
Y LOWER LIMIT SETTING AT TAMP ADJUSTMENT
NOT USED
YDATA
DATA READ VALUE AT TAMP ADJUSTMENT
SEE THE ADJUSTMENT PROCEDURES.
TAMP H 158
Y UPPER LIMIT SETTING AT TAMP ADJUSTMENT
NOT USED NTSC TAMP 90 T AMP ADJUSTMENT SEE THE ADJUSTMENT PROCEDURES. PAL-M TAMP 96 TAMP ADJUSTMENT SEE THE ADJUSTMENT PROCEDURES. PAL-N TAMP 96 TAMP ADJUSTMENT SEE THE ADJUSTMENT PROCEDURES.
WHITE BALANCE ADJUSTMENT
3
R CUTOFF2 0 RED CUT-OFF ADJUSTMENT 2 REFER TO METHOD OF ADJUSTMENT. G CUTOFF2 0 GREEN CUT-OFF ADJUSTMENT 2 REFER TO METHOD OF ADJUSTMENT. B CUTOFF2 0 BLUE CUT-OFF ADJUSTMENT 2 REFER TO METHOD OF ADJUSTMENT. R-GAIN 0 WHITE BALANCE ADJUSTMENT 2 REFER TO METHOD OF ADJUSTMENT . G-GAIN 0 WHITE BALANCE ADJUSTMENT 2 REFER TO METHOD OF ADJUSTMENT. B-GAIN 0 WHITE BALANCE ADJUSTMENT 2 REFER TO METHOD OF ADJUSTMENT. RGB GAMMA 1 RGB γ COEFFICIENT SETTING NOT USED
1125I/750P AD ADJUSTMENT
7 AD9883 DATA 0
AD9883 DATA WRITE AND READ NOT USED AD9883 DATA WAIT WRITE AND READ EXECUTED NOT USED AUTO GAIN-OFFSET1 OFF
AD9883 GAIN AND OFFSET AUTO ADJUSTMENT OFF/RUN
REFER TO METHOD OF ADJUSTMENT.
AD R GAIN 140
1125I, 750P INPUT RED GAIN ADJUSTMENT
REFER TO METHOD OF ADJUSTMENT.
AD G GAIN 140
1125I, 750P INPUT GREEN GAIN ADJUSTMENT
REFER TO METHOD OF ADJUSTMENT.
AD B GAIN 140
1125I, 750P INPUT BLUE GAIN ADJUSTMENT
REFER TO METHOD OF ADJUSTMENT.
AD R OFFSET 56
1125I, 750P INPUT RED OFFSET ADJUSTMENT
REFER TO METHOD OF ADJUSTMENT.
AD G OFFSET 56
1125I, 750P INPUT GREEN OFFSET ADJUSTMENT
REFER TO METHOD OF ADJUSTMENT.
AD B OFFSET 56
1125I, 750P INPUT BLUE OFFSET ADJUSTMENT
REFER TO METHOD OF ADJUSTMENT.
RGTAR A3
1125I, 750P INPUT RED GAIN ADJUSTMENT TARGET
NOT USED
GGTAR A3
1125I, 750P INPUT GREEN GAIN ADJUSTMENT TARGET
NOT USED
BGTAR A3
1125I, 750P INPUT BLUE GAIN ADJUSTMENT TARGET
NOT USED
RGCAL
Y LEVEL, CHROMA CALCULATION DISPLAY
NOT USED
GGCAL
Y LEVEL, CHROMA CALCULATION DISPLAY
NOT USED
BGCAL
Y LEVEL, CHROMA CALCULATION DISPLAY
NOT USED
ROCAL
CLAMP RANGE Y LEVEL, WHITE LEVEL CALCULATION DISPLAY
NOT USED
GOCAL
CLAMP RANGE Y LEVEL, WHITE LEVEL CALCULATION DISPLAY
NOT USED
BOCAL
CLAMP RANGE Y LEVEL, WHITE LEVEL CALCULATION DISPLAY
NOT USED
BASIC SETTING
LIST OF THE ADJUSTMENT PROCESS MODE MENU
For calling the adjustment process mode and keying in this mode, refer back to "ADJUSTING PROCEDURE OF EACH SECTION".
DEFAULT CHART OF ADJUSTMENT PROCESS 1ST HIERARCHICAL ITEMS
Page 18
18
LC-20B8U-S LC-20B9U-S LC-20B9U-SM
Page No. Item
Initial
Function
Response precautions on servicing
Value (Do not change other items than designated.)
PC AD ADJUSTMENT
8 AUTO GAIN2 OFF
AD9883 GAIN AUTO ADJUSTMENT OFF/RUN
REFER TO METHOD OF ADJUSTMENT.
AUTO OFFSET2 OFF
AD9883 OFFSET AUTO ADJUSTMENT OFF/RUN
REFER TO METHOD OF ADJUSTMENT.
PCAD R GAIN 100
PC INPUT RED GAIN ADJUSTMENT
REFER TO METHOD OF ADJUSTMENT.
PCAD G GAIN 100
PC INPUT GREEN GAIN ADJUSTMENT
REFER TO METHOD OF ADJUSTMENT. PCAD B GAIN 100 PC INPUT BLUE GAIN ADJUSTMENT REFER TO METHOD OF ADJUSTMENT. PCAD R OFFSET 56
PC INPUT RED OFFSET ADJUSTMENT
REFER TO METHOD OF ADJUSTMENT. PCAD G OFFSET 56
PC INPUT GREEN OFFSET ADJUSTMENT
REFER TO METHOD OF ADJUSTMENT. PCAD B OFFSET 56
PC INPUT BLUE OFFSET ADJUSTMENT
NOT USED RGTAR E6
PC INPUT RED GAIN ADJUSTMENT TARGET
NOT USED GGTAR E6
PC INPUT GREEN GAIN ADJUSTMENT TARGET
NOT USED BGTAR E6
PC INPUT BLUE GAIN ADJUSTMENT TARGET
NOT USED RGCAL
Y LEVEL, CHROMA CALCULATION DISPLAY
NOT USED GGCAL
Y LEVEL, CHROMA CALCULATION DISPLAY
NOT USED BGCAL
Y LEVEL, CHROMA CALCULATION DISPLAY
NOT USED ROCAL
CLAMP RANGE Y LEVEL, WHITE LEVEL CALCULATION DISPLAY
NOT USED GOCAL
CLAMP RANGE Y LEVEL, WHITE LEVEL CALCULATION DISPLAY
NOT USED BOCAL
CLAMP RANGE Y LEVEL, WHITE LEVEL CALCULATION DISPLAY
NOT USED
TABLE OF VARIOUS SETTINGS
9 I2C DATA 0
I2C BUS CONTROL IC DATA WRITE AND READ
NOT USED I2C DATA WAIT WRITE AND READ EXECUTED NOT USED SOUND
SHIFT TO THE SOUND ADJUSTMENT PAGE
USE ENTER KEY TO GO TO THE SOUND ADJUSTMENT PAGE. DVP
SHIFT TO THE DVP ADJUSTMENT PAGE
USE ENTER KEY TO GO TO THE TC ADJUSTMENT PAGE. TUNER
SHIFT TO THE TUNER ADJUSTMENT PAGE
USE ENTER KEY TO GO TO THE TUNER ADJUSTMENT PAGE. OTHERS
SHIFT TO THE OTHER ADJUSTMENT PAGE
USE ENTER KEY TO GO TO THE OTHER ADJUSTMENT PAGE.
Page No. Item
Initial
Function
Response precautions on servicing
Value (Do not change other items than designated.)
AUDIO ADJUSTMENT PROCESS SPECIFICATIONS
AUDIO ADJUSTMENT
SOUND1 VOLUME 20 SOUND VOLUME NOT USED
MSP DATA 0
AUDIO IC MSP DATA WRITE AND READ
NOT USED MSP DATA WAIT WRITE AND READ EXECUTED NOT USED CARRIER MUTE ON
AUDIO OUTPUT SETTING WITHOUT TV SYNC
NOT USED IGR THR 12D IGR THRESH LEVEL NOT USED
AUDIO ADJUSTMENT
SOUND2 PRESCALE SCART 27
PRE-SCALE SETTING (EXTERNAL INPUT)
NOT USED PRESCALE FM/AM-M 31 PRE-SCALE SETTING (TV) NOT USED
AUDIO ADJUSTMENT
SOUND3 BAND1 MIN TV -0350
EQUALIZER SETTING (WITH TV INPUT)
NOT USED
OTHER -0350
EQUALIZER SETTING (WITH OTHER INPUT THAN TV)
NOT USED BAND1 CNT TV +0450
EQUALIZER SETTING (WITH TV INPUT)
NOT USED
OTHER +0450
EQUALIZER SETTING (WITH OTHER INPUT THAN TV)
NOT USED BABD1 MAX TV +1200
EQUALIZER SETTING (WITH TV INPUT)
NOT USED
OTHER +1200
EQUALIZER SETTING (WITH OTHER INPUT THAN TV)
NOT USED BAND2 MIN TV 0000
EQUALIZER SETTING (WITH TV INPUT)
NOT USED
OTHER 0000
EQUALIZER SETTING (WITH OTHER INPUT THAN TV)
NOT USED BAND2 CNT TV +0300
EQUALIZER SETTING (WITH TV INPUT)
NOT USED
OTHER +0300
EQUALIZER SETTING (WITH OTHER INPUT THAN TV)
NOT USED BABD2 MAX TV +0600
EQUALIZER SETTING (WITH TV INPUT)
NOT USED
OTHER +0600
EQUALIZER SETTING (WITH OTHER INPUT THAN TV)
NOT USED BAND3 TV -0150
EQUALIZER SETTING (WITH TV INPUT)
NOT USED
OTHER -0150
EQUALIZER SETTING (WITH OTHER INPUT THAN TV)
NOT USED
Page 19
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LC-20B8U-S LC-20B9U-S LC-20B9U-SM
Page No. Item
Initial
Function
Response precautions on servicing
Value (Do not change other items than designated.)
AUDIO ADJUSTMENT
SOUND4 BAND4 MIN TV -0150
EQUALIZER SETTING (WITH TV INPUT)
NOT USED
OTHER -0150
EQUALIZER SETTING (WITH OTHER INPUT THAN TV)
NOT USED
BAND4 CNT TV +0150
EQUALIZER SETTING (WITH TV INPUT)
NOT USED
OTHER +0150
EQUALIZER SETTING (WITH OTHER INPUT THAN TV)
NOT USED
BAND4 MAX TV +0450
EQUALIZER SETTING (WITH TV INPUT)
NOT USED
OTHER +0450
EQUALIZER SETTING (WITH OTHER INPUT THAN TV)
NOT USED
BAND5 MIN TV -0500
EQUALIZER SETTING (WITH TV INPUT)
NOT USED
OTHER -0500
EQUALIZER SETTING (WITH OTHER INPUT THAN TV)
NOT USED
BAND5 CNT TV +0300
EQUALIZER SETTING (WITH TV INPUT)
NOT USED
OTHER +0300
EQUALIZER SETTING (WITH OTHER INPUT THAN TV)
NOT USED
BAND5 MAX TV +1100
EQUALIZER SETTING (WITH TV INPUT)
NOT USED
OTHER +1100
EQUALIZER SETTING (WITH OTHER INPUT THAN TV)
NOT USED
Page No. Item
Initial
Function
Response precautions on servicing
Value (Do not change other items than designated.)
DVP ADJUSTMENT PROCESS ITEMS
DVP1 DVP DATA 0000 F0 ------(----)
DVP-RELATED GENERAL-PURPOSE VARIABLE SETTINGS
NOT USED
DVP TEST PATTERN 0 TEST PATTERN SELECT
SEE THE ADJUSTMENT PROCESS MODE TEST PATTERNS.
VCDOFFSET 15
VERTICAL COUNT-DOWN MINIMUM OSCILLATION CYCLE
NOT USED
VCDWINDOW 30
VERTICAL COUNT-DOWN SYNC RANGE
NOT USED
READ TEMP ---.--°C
TEMPERATURE DATA READING DISPLAY
NOT USED
DVP3 N358 TV CONT 144 N358 IMAGE SETTING (TV) NOT USED
N358 AV CONT 144
N358 IMAGE SETTING (COMPOSITE, S VIDEO)
NOT USED N358 TV BRIGHT 122 N358 BRIGHTNESS SETTING (TV) NOT USED N358 AV BRIGHT 122
N358 BRIGHTNESS SETTING (COMPOSITE, S VIDEO)
NOT USED N358 TV COLOR 52 N358 COLOR DENSITY SETTING (TV) NOT USED N358 AV COLOR 52
N358 COLOR DENSITY SETTING (COMPOSITE, S VIDEO)
NOT USED N358 TV TINT 138 N358 TINT SETTING (TV) NOT USED N358 AV TINT 138
N358 TINT SETTING (COMPOSITE, S VIDEO)
NOT USED N358 TV SHARP V 100
N358 V PICTURE QUALITY SETTING (TV)
NOT USED N358 AV SHARP V 100
N358 V PICTURE QUALITY SETTING (COMPOSITE, S VIDEO)
NOT USED N358 TV SHARP H1 200
N358 H PICTURE QUALITY SETTING 1 (TV)
NOT USED N358 AV SHARP H1 200
N358 H PICTURE QUALITY SETTING 1 (COMPOSITE, S VIDEO)
NOT USED N358 TV SHARP H2 150
N358 H PICTURE QUALITY SETTING 2 (TV)
NOT USED N358 AV SHARP H2 160
N358 H PICTURE QUALITY SETTING 2 (COMPOSITE, S VIDEO)
NOT USED
DVP4 N443 AV CONT 144
N443 IMAGE SETTING (COMPOSITE, S VIDEO)
NOT USED N443 AV BRIGHT 122 N443
BRIGHTNESS SETTING (COMPOSITE, S VIDEO)
NOT USED N443 AV COLOR 52
N443 COLOR DENSITY SETTING (COMPOSITE, S VIDEO)
NOT USED N443 AV TINT 138
N443 TINT SETTING (COMPOSITE, S VIDEO)
NOT USED N443 AV SHARP V 100
N443 V PICTURE QUALITY SETTING (COMPOSITE, S VIDEO)
NOT USED N443 AV SHARP H1 200
N443 H PICTURE QUALITY SETTING 1 (COMPOSITE, S VIDEO)
NOT USED N443 AV SHARP H2 160
N443 H PICTURE QUALITY SETTING 2 (COMPOSITE, S VIDEO)
NOT USED
DVP5 PAL AV CONT 144
PAL IMAGE SETTING (COMPOSITE, S VIDEO)
NOT USED PAL AV BRIGHT 122
PAL BRIGHTNESS SETTING (COMPOSITE, S VIDEO)
NOT USED PAL AV COLOR 52
PAL COLOR DENSITY SETTING (COMPOSITE, S VIDEO)
NOT USED PAL AV TINT 138
PAL TINT SETTING (COMPOSITE, S VIDEO)
NOT USED PAL AV SHARP V 100
PAL V PICTURE QUALITY SETTING (COMPOSITE, S VIDEO)
NOT USED PAL AV SHARP H1 200
PAL H PICTURE QUALITY SETTING 1 (COMPOSITE, S VIDEO)
NOT USED PAL AV SHARP H2 160
PAL H PICTURE QUALITY SETTING 2 (COMPOSITE, S VIDEO)
NOT USED
DVP6 SECAM AV CONT 144
SECAM IMAGE SETTING (COMPOSITE, S VIDEO)
NOT USED SECAM AV BRIGHT 122
SECAM BRIGHTNESS SETTING (COMPOSITE, S VIDEO)
NOT USED SECAM AV COLOR 52
SECAM COLOR DENSITY SETTING (COMPOSITE, S VIDEO)
NOT USED SECAM AV TINT 138
SECAM TINT SETTING (COMPOSITE, S VIDEO)
NOT USED SECAM AV SHARP V 100
SECAM V PICTURE QUALITY SETTING (COMPOSITE, S VIDEO)
NOT USED SECAM AV SHARP H1 200
SECAM H PICTURE QUALITY SETTING 1 (COMPOSITE, S VIDEO)
NOT USED SECAM AV SHARP H2 160
SECAM H PICTURE QUALITY SETTING 2 (COMPOSITE, S VIDEO)
NOT USED
Page 20
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LC-20B8U-S LC-20B9U-S LC-20B9U-SM
Page No. Item
Initial
Function
Response precautions on servicing
Value (Do not change other items than designated.)
DVP7 PAL60 A V CONT 144
PAL60 IMAGE SETTING (COMPOSITE, S VIDEO)
NOT USED
PAL60 AV BRIGHT 122
PAL60 BRIGHTNESS SETTING (COMPOSITE, S VIDEO)
NOT USED
PAL60 AV COLOR 52
PAL60 COLOR DENSITY SETTING (COMPOSITE, S VIDEO)
NOT USED
PAL60 AV TINT 138
PAL60 TINT SETTING (COMPOSITE, S VIDEO)
NOT USED
PAL60 AV SHARP V 100
PAL60 V PICTURE QUALITY SETTING (COMPOSITE, S VIDEO)
NOT USED
PAL60 AV SHARP H1 200
PAL60 H PICTURE QUALITY SETTING 1 (COMPOSITE, S VIDEO)
NOT USED
PAL60 AV SHARP H2 160
PAL60 H PICTURE QUALITY SETTING 2 (COMPOSITE, S VIDEO)
NOT USED
DVP8 PAL-M TV CONT 144 PAL-M IMAGE SETTING (TV) NOT USED
PAL-M AV CONT 144
PAL-M IMAGE SETTING (COMPOSITE, S VIDEO)
NOT USED PAL-M TV BRIGHT 122 PAL-M BRIGHTNESS SETTING (TV) NOT USED PAL-M AV BRIGHT 122
PAL-M BRIGHTNESS SETTING (COMPOSITE, S VIDEO)
NOT USED PAL-M TV COLOR 52
PAL-M COLOR DENSITY SETTING (TV)
NOT USED PAL-M AV COLOR 52
PAL-M COLOR DENSITY SETTING (COMPOSITE, S VIDEO)
NOT USED PAL-M TV TINT 138 PAL-M TINT SETTING (TV) NOT USED PAL-M AV TINT 138
PAL-M TINT SETTING (COMPOSITE, S VIDEO)
NOT USED PAL-M TV SHARP V 100
PAL-M V PICTURE QUALITY SETTING (TV)
NOT USED PAL-M AV SHARP V 100
PAL-M V PICTURE QUALITY SETTING (COMPOSITE, S VIDEO)
NOT USED PAL-M TV SHARP H1 200
PAL-M H PICTURE QUALITY SETTING 1 (TV)
NOT USED PAL-M AV SHARP H1 200
PAL-M H PICTURE QUALITY SETTING 1 (COMPOSITE, S VIDEO)
NOT USED PAL-M TV SHARP H2 150
PAL-M H PICTURE QUALITY SETTING 2 (TV)
NOT USED PAL-M AV SHARP H2 160
PAL-M H PICTURE QUALITY SETTING 2 (COMPOSITE, S VIDEO)
NOT USED
DVP9 PAL-N TV CONT 144 PAL-N IMAGE SETTING (TV) NOT USED
PAL-N AV CONT 144
PAL-N IMAGE SETTING (COMPOSITE, S VIDEO)
NOT USED PAL-N TV BRIGHT 122 PAL-N BRIGHTNESS SETTING (TV) NOT USED PAL-N AV BRIGHT 122
PAL-N BRIGHTNESS SETTING (COMPOSITE, S VIDEO)
NOT USED PAL-N TV COLOR 52
PAL-N COLOR DENSITY SETTING (TV)
NOT USED PAL-N AV COLOR 52
PAL-N COLOR DENSITY SETTING (COMPOSITE, S VIDEO)
NOT USED PAL-N TV TINT 138 PAL-N TINT SETTING (TV) NOT USED PAL-N AV TINT 138
PAL-N TINT SETTING (COMPOSITE, S VIDEO)
NOT USED PAL-N TV SHARP V 100
PAL-N V PICTURE QUALITY SETTING (TV)
NOT USED PAL-N AV SHARP V 100
PAL-N V PICTURE QUALITY SETTING (COMPOSITE, S VIDEO)
NOT USED PAL-N TV SHARP H1 200
PAL-N H PICTURE QUALITY SETTING 1 (TV)
NOT USED PAL-N AV SHARP H1 200
PAL-N H PICTURE QUALITY SETTING 1 (COMPOSITE, S VIDEO)
NOT USED PAL-N TV SHARP H2 150
PAL-N H PICTURE QUALITY SETTING 2 (TV)
NOT USED PAL-N AV SHARP H2 160
PAL-N H PICTURE QUALITY SETTING 2 (COMPOSITE, S VIDEO)
NOT USED
DVP10 525I CONT 144 525I IMAGE SETTING (TV) NOT USED
525I BRIGHT 122 525I BRIGHTNESS SETTING (TV) NOT USED 525I COLOR 78
525I COLOR DENSITY SETTING (TV)
NOT USED 525I TINT 146 525I TINT SETTING (TV) NOT USED 525I SHARP V 100
525I V PICTURE QUALITY SETTING (TV)
NOT USED 525I SHARP H1 160
525I H PICTURE QUALITY SETTING 1 (TV)
NOT USED 525I SHARP H2 160
525I H PICTURE QUALITY SETTING 2 (TV)
NOT USED 525P CONT 144
525P IMAGE SETTING (COMPOSITE, S VIDEO)
NOT USED 525P BRIGHT 122
525P BRIGHTNESS SETTING (COMPOSITE, S VIDEO)
NOT USED 525P COLOR 78
525P COLOR DENSITY SETTING (COMPOSITE, S VIDEO)
NOT USED 525P TINT 146
525P TINT SETTING (COMPOSITE, S VIDEO)
NOT USED 525P SHARP V 100
525P V PICTURE QUALITY SETTING (COMPOSITE, S VIDEO)
NOT USED 525P SHARP H1 120
525P H PICTURE QUALITY SETTING 1 (COMPOSITE, S VIDEO)
NOT USED 525P SHARP H2 120
525P H PICTURE QUALITY SETTING 2 (COMPOSITE, S VIDEO)
NOT USED
Page 21
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LC-20B8U-S LC-20B9U-S LC-20B9U-SM
Page No. Item
Initial
Function
Response precautions on servicing
Value (Do not change other items than designated.)
DVP11 625I CONT 144 625I IMAGE SETTING (TV) NOT USED
625I BRIGHT 122 625I BRIGHTNESS SETTING (TV) NOT USED 625I COLOR 78
625I COLOR DENSITY SETTING (TV)
NOT USED 625I TINT 146 625I TINT SETTING (TV) NOT USED 625I SHARP V 100
625I V PICTURE QUALITY SETTING (TV)
NOT USED 625I SHARP H1 160
625I H PICTURE QUALITY SETTING 1 (TV)
NOT USED 625I SHARP H2 160
625I H PICTURE QUALITY SETTING 2 (TV)
NOT USED 625P CONT 144 625P IMAGE SETTING (TV) NOT USED 625P BRIGHT 122 625P BRIGHTNESS SETTING (TV) NOT USED 625P COLOR 78
625P COLOR DENSITY SETTING (TV)
NOT USED 625P TINT 146 625P TINT SETTING (TV) NOT USED 625P SHARP V 100
625P V PICTURE QUALITY SETTING (TV)
NOT USED 625P SHARP H1 120
625P H PICTURE QUALITY SETTING 1 (TV)
NOT USED 625P SHARP H2 120
625P H PICTURE QUALITY SETTING 2 (TV)
NOT USED
DVP12 1125I CONT 144 1125I IMAGE SETTING (TV) NOT USED
1125I BRIGHT 122 1125I BRIGHTNESS SETTING (TV) NOT USED 1125I COLOR 78
1125I COLOR DENSITY SETTING (TV)
NOT USED 1125I TINT 146 1125I TINT SETTING (TV) NOT USED 1125I SHARP V 100
1125I V PICTURE QUALITY SETTING (TV)
NOT USED 1125I SHARP H1 100
1125I H PICTURE QUALITY SETTING 1 (TV)
NOT USED 1125I SHARP H2 100
1125I H PICTURE QUALITY SETTING 2 (TV)
NOT USED 750P CONT 144 750P IMAGE SETTING (TV) NOT USED 750P BRIGHT 122 750P BRIGHTNESS SETTING (TV) NOT USED 750P COLOR 78
750P COLOR DENSITY SETTING (TV)
NOT USED 750P TINT 146 750P TINT SETTING (TV) NOT USED 750P SHARP V 100
750P V PICTURE QUALITY SETTING (TV)
NOT USED 750P SHARP H1 100
750P H PICTURE QUALITY SETTING 1 (TV)
NOT USED 750P SHARP H2 100
750P H PICTURE QUALITY SETTING 2 (TV)
NOT USED
Page No. Item
Initial
Function
Response precautions on servicing
Value (Do not change other items than designated.)
DEFAULT CHART OF ADJUSTMENT PROCESS TUNER ITEMS
BASIC SETTINGS
TUNER1 AFT UP 1.80
AFT VOLTAGE REFERENCE LEVEL (ALL BANDS)
NOT USED AFT DOWN 1.20
AFT VOLTAGE REFERENCE LEVEL (ALL BANDS)
NOT USED LSYNC 150
SYNC JUDGMENT THRESHOLD (TV)
NOT USED HSYNC 162
SYNC JUDGMENT THRESHOLD (TV)
NOT USED LSYNC2 150
SYNC JUDGMENT THRESHOLD (FOR TV AFT CHANNEL (1-CH) SELECT)
NOT USED HSYNC2 162
SYNC JUDGMENT THRESHOLD (FOR TV AFT CHANNEL (1-CH) SELECT)
NOT USED AVSYNC 1
SYNC DETERMINATION THRESHOLD (EXTERNAL INPUT)
COMPSYNC 3
SYNC JUDGMENT THRESHOLD (COLOR DIFFERENCE INPUT)
NOT USED EDS TEST 10
DURATION UNTIL JUDGMENT OF NO EDS TIME DATA (SECONDS)
NOT USED
TUNER2 AFT FARTIME 50
CHANNEL PRESET TIME ADJUSTMENT 1
NOT USED AFT NEARTIME 30
CHANNEL PRESET TIME ADJUSTMENT 2
NOT USED AFT NEARTIME 10
CHANNEL PRESET TIME ADJUSTMENT 3
NOT USED AFT 1STEPTIME 10
CHANNEL PRESET TIME ADJUSTMENT 4
NOT USED AFT CSYNCTIME 50
CHANNEL PRESET TIME ADJUSTMENT 5
NOT USED SYNC ON 10
CHANNEL PRESET SYNC JUDGMENT,
NOT USED
CONTINUOUS MATCHING TIMES(CH SEARCH, AIR/CABLE JUDGMENT, CLOCK SYNC JUDGMENT)
SYNC WIDTH 1
CHANNEL PRESET SYNC JUDGMENT, THRESHOLD
NOT USED
(SYNC PROVIDED JUST AFTER THE MAXIMUM-TO­MINIMUM DIFFERENCE COMES SMALLER)
Page 22
22
LC-20B8U-S LC-20B9U-S LC-20B9U-SM
Page No. Item
Initial
Function
Response precautions on servicing
Value (Do not change other items than designated.)
OTHERS
OTHERS1 DAC DATA
DAC-RELATED GENERAL-PURPOSE VARIABLE SETTINGS
NOT USED
L ERROR WAIT 15s
LAMP ERROR DETECT WAIT TIME
NOT USED L ERROR H TIME 1.0s LAMP ERROR DETECT TIME NOT USED TV AUTO GAIN OFF AUTO GAIN SETTING FOR TV NOT USED PWM FREQ 150
DIMMER FREQUENCY SETTING (IN HZ)
NOT USED PWM DUTY 0 DIMMER DUTY SETTING NOT USED OPC THRESHOLD 24
INPUT LEVEL THRESHOLD FROM BRIGHTNESS
NOT USED
SENSOR STOP MODE TO OPERATION MODE
HOTEL POWERFIX OFF
USED FOR FIXED HOTEL MODE POWER ON
NOT USED COMP SYSTEM AUTO
COMPONENT SIGNAL SELECT IN ADJUSTMENT PROCESS
NOT USED REMOCON CODE DISPLAYED AT THE BOTTOM
OTHERS
OTHERS2 CLOSED CAPTION 15 CLOSED CAPTION THRESH LEVEL NOT USED
AUTO CLOCK DISPLAYED ON THE 2ND, 3RD AND 4TH LINES FROM BOTTOM FOR US-DESTINED MODELS
DEFAULT CHART OF OTHER ADJUSTMENT PROCESS ITEMS
Page 23
23
LC-20B8U-S LC-20B9U-S LC-20B9U-SM
PUBLIC MODE SETTING PROCEDURE
1. How to start Public Mode
» There are the following two ways to get the public mode setup screen displayed.
1 1) Press the "INPUT" and "VOL (+)" keys on the set at once and turn on the power.
2) Get the password input screen displayed.
Procedure
» The input starts with the leftmost digit. » Use the numeric keys [1] thru [9] and [10/0] keys on the remote con-
troller. The other keys are not acceptable.
» With a numeric-key input, "–" will change to " ". The input position
will move one digit to the right.
» With all the 3 digits entered, the password will be verified.
3) The 3-digit password is now verified. The password [0] [2] [7] provides for the public mode screen. (This screen comes on with whatever adjustment process settings.) With any other passwords, the screen changes to the normal mode.
2 In the adjustment process mode, turn on "PUBLIC MODE". Also press the "CH ( ù)" and "VOL (+)" keys on
the set at once and turn on the power.
Page 24
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LC-20B8U-S LC-20B9U-S LC-20B9U-SM
2. How to exit Public Mode
There are the following ways to quit the public mode setup screen. » Turn off "PUBLIC MODE" in the adjustment process mode. (✩) ← This way alone is not for quitting the setup
screen, but for quitting the mode itself.
» Turn off the power with the "POWER" key. (★) » Select "ENTER". (★) » Move the cursor to "RESET" and press the "FLASHBACK" key. (Back to the normal mode screen)(✩)
... "PUBLIC MODE" stays on in the adjustment process mode.... The settings will be back to the factory ones.
3. Public Mode Setting Values
» With the factory settings made, the public mode settings get initialized. (The adjustment process remains intact.)
4. Public Mode Menu
The guidance is not displayed onscreen. Setup procedure
» To move the cursor up and down, use the "cursor UP/DOWN" key (remote controller) and "CH (ù)/(Ù)" key
(remote controller and set).
» To change the settings, use the "cursor RIGHT/LEFT" key (remote controller) and "VOL (+)/(–)" key (remote
controller and set).
» To save new settings, keep the cursor at "Enter" and use the "cursor RIGHT/LEFT" key (remote controller) and
"VOL (+)/(–)" key (remote controller and set).
Public mode Maximum volume [ 60 ] Volume fixed [Variable ] Volume fixed level [ 20 ] RC button [Respond ] Panel button [Respond ] Menu button [Respond ] On screen display [Yes ] Input mode start [Normal ] Input mode fixed [Variable ] Reset Enter
Page 25
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LC-20B8U-S LC-20B9U-S LC-20B9U-SM
5. On Setting Items
* "EZ-SETUP" discussed below indicates "EZ-SETUP after the first power-on". (1) MAXIMUM VOLUME
(2) VOLUME FIXED
Selection Default Explanation Limit in Setting
Exception
Remarks
Adjustment from 1 to 60 (no loop) 60 Sound volume can not be adjusted higher than the preset value.
» When the sound volume is set lower than 59, only figures are displayed and the sound volume bar is not
displayed.
» The maximum sound volume for ON-timer (Wake up timer) is limited also to the preset value. » In the item "VOLUME" of adjustment process, the sound volume can be set freely irrespective of this
setting.
» Setting is valid only for the speakers of the unit. (As for the headphone, the sound volume can be set up
to 60 irrespective of the limit.)
» In line output (sound volume variable), the sound volume can be adjusted from -60 to 0 irrespective of
pre-adjusted value.
» When the sound volume is set higher than the MAX setting by the adjusting process or headphone, the
sound volume control operation is prohibited for turn-up and the sound volume should be turned down to MAX in this state.
Selection Default Explanation Limit in Setting
Exception
Remarks
Selection between
"Variable" and "Fixed" (loop provided)
Variable Sound volume is fixed and made invariable.
» The sound volume for the ON-timer (Wake up timer) is fixed also without display of menu. Besides, the
setting is made impossible. (Basically, the menu is not displayed.)
» The following keys become invalid:
» Sound volume Up/Down (VOL +/-) [for both remote control and the unit] » Mute (MUTE)
» In the item "VOLUME" of adjustment process, the sound volume can be set freely irrespective of this
setting.
» In "Variable" setting, the sound volume had been conventionally set at 1 but this operation has been
abolished (and follows the last memory).
» The sound volume for the ON-time is not set at 1 either and the sound volume set value of the ON-timer
before executing the hotel mode is held.
» Setting is valid only for the speakers of the unit. (As for the headphone, the sound volume can be set up
to 60 irrespective of the limit.)
» In line output (sound volume variable), the sound volume can be adjusted from -60 to 0 irrespective of
pre-adjusted value.
» As for sound volume fixing and sound volume MAX level, the sound volume fixing has priority. » Once the sound volume has been changed by adjustment process or headphone, it should be set back to
the sound volume preset by sound volume fixing level when the adjustment process ends or when the headphone is removed.
Page 26
26
LC-20B8U-S LC-20B9U-S LC-20B9U-SM
(3) VOLUME FIXED LEVEL
(4) R/C BUTTON
(5) PANEL BUTTON
(6) MENU BUTTON
Selection Default Explanation Limit in Setting Exception Remarks
Adjustment from 1 to 60 (no loop) 20 The sound volume to be fixed by
"Volume fixed" is determined.
None None Setting is valid only when
"Volume fixed" is selected for "fixed".
This must be confirmed actually by changing also the sound volume in accordance with setting.
Selection Default Explanation Limit in Setting
Exception
Remarks
Selection between
"Respond" , "Limited" and "No respond" (loop provide)
Respond Keys acceptable by remote control are limited or reception of keys can be prohibited. 1In
"limited" setting, only power ON/OFF, sound volume '", tuning '" and BACKLIGHT (brightness
sensor) are accepted. 2In
"No respond" setting, all the keys (including the power key) are not accepted.
» Adjustment process, factory setting, inspection process and hotel only keys are valid irrespective of set-
ting.
» All the keys can be used in adjustment process, inspection mode and hotel menu irrespective of setting. » All the keys can be used also in the initial EZ-Setup after power-ON irrespective of setting.
Selection Default Explanation Limit in Setting Exception
Remarks
Selection between
"Respond" and "No respond" (loop provide)
Respond All the operations by keys (except the power key) of the unit can be invalidated.
» Inspection mode and hotel menu mode can be started irrespective of setting. » All the keys can be used in adjustment process, inspection mode and hotel menu irrespective of setting. » In U.S.A model, all the keys can be used also in the initial EZ-Setup after power-ON irrespective of
setting.
Selection Default Explanation
Limit in Setting
Exception
Remarks
Selection between
"Respond" and "No respond" (loop provide)
Respond In
"No respond" setting, the menu operation by the menu key of the remote control and the menu key of the
unit are invalidated.
» ON-timer (Wakeup Timer) is turned OFF. » The following keys become invalid.
Wake-up timer and clock setting keys and all of the direct change keys to menu display
» Inspection mode and hotel menu mode can be started irrespective of setting. » All the keys can be used in adjustment process, inspection mode and hotel menu irrespective of setting. » All the keys can be used also in the initial EZ-Setup after power-ON irrespective of setting.
Page 27
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LC-20B8U-S LC-20B9U-S LC-20B9U-SM
(7) ON SCREEN DISPLAY
(8) INPUT MODE START
Selection Default Explanation
Limit in Setting
Others
Exception
Remarks
Selection between "Yes" , "Limited" (loop provide) Yes The following OSD displays are made ineffective. Displays of menu group, channel call, sound volume bar and direct key call
» ON-timer (Wake-up timer) is cleared and set to "OFF". » Set time of the OFF-timer (SLEEP TIMER) is cleared. » Setting of the no-signal power-OFF (AUTO POWER OFF) is cleared to "OFF". » Setting of the no-operation power-OFF is cleared to "OFF". » Keys falling under any of the following items become invalid.
1Appearance of screen changes and the sound changes. 2Personal functions which are hard to restore.
Ex.) Screen display, menu, OFF-timer, ON-timer, AV MODE, screen size switching, clock setting, treble emphasis, AUDIO ONLY, sound changeover, LANGUAGE, CLOSED CAPTION
» Simple input switching is generated. Those which are restored soon after leaving as they are and may be
requested for change by customer are not prohibited. Ex.) Brightness sensor (BACKLIGHT) and PIC. FLIP
» Such a caution which is displayed independently is displayed as it is.
Non-responding signal caution, V-Chip caution and power-ON fixing caution
» In "No" setting, the setting of "SOUND ONLY MODE" is changed to "OFF" and selecting operation is
made prohibited.
» When CC has already been ON, CLOSED CAPTION is displayed.
Selection Default Explanation
About options
Limit in Setting Exception Remarks
Selection between
"Normal" , "TV (CH~)" "COMPONENT" "AV1" and "AV2" (loop provide)
Normal In power-ON, the input source to be started or channel can be set. (In standard mode, the operation follows the last memory.)
» All the input sources in the model are made selectable. » When the input/output switchable input source is selected and the input source is set to output, the setting
of input/output switching is changed to input at the execution of hotel menu. In addition, the input/output switching by menu is prohibited.
» In TV mode, the display of all channels is stopped and it is treated as an input source. At this time, the
channel to be set follows the last memory and the content of the last memory is included in the notation by options. Ex.) TV (CH2), TV (CH4) etc.
» The order of appearance of options in the hotel menu should agree with the order of toggles by input
switching key.
» The display of channel setting menu and the channel setting operation are prohibited (except for MCL). » In the start by "ON-timer (Wake-up timer)", the channel set by ON-timer (Wake-up timer) has priority. » In setting at "Normal", the setting of "Input mode fixed" is changed to "Variable" and selection should be
prohibited.
Page 28
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LC-20B8U-S LC-20B9U-S LC-20B9U-SM
(9) INPUT MODE FIXED
Selection Default Explanation
Limit in Setting
Exception Remarks
Selection between
"Variable" and "Fixed" (loop provide)
– (Variable) The input mode is fixed at the input source or the channel set at the
"Input mode start" in 9 and other input
sources and channels can be made non-selectable.
» With the execution of hotel mode, the input source is forced to change to that set by "Input mode start"
and the channel switching and input switching are prohibited thereafter.
» ON-timer's (Wake-up timer) channel items are not displayed or the operation is prohibited. (Basically, they
are not displayed.)
» The following keys are invalidated.
CH '", direct tuning button, FLASHBACK, input ~However, the keys (input switching and CH '" keys) of the unit for menu operation remain valid.
None
» In the following case, setting is cancelled and mode is changed to "Variable".
1When the setting of
"Input mode start" is set to "Standard (Normal)"
Page 29
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LC-20B8U-S LC-20B9U-S LC-20B9U-SM
TROUBLE SHOOTING TABLE
No or Wrong Picture
Are the waveforms at
pins (84), (89) and (90)
of IC801 as specified?
Check IC801 and its
peripheral circuits as
well as the LCD panel
voltage and waveform.
Check the related lines,
IC801 itself and its
peripheral circuits.
Are the waveforms at the signal
input pins of IC801 as specified?
TV/Composite … Pin (40)
S Video … Pins (42) and (31)
Component … Pins (21), (33) and
(44)
Check the IC801 signal
input line.
Check IC801 and its
peripheral circuits.
No
No
No
Yes
Yes
Yes
Does the IC801 test pattern appear
properly?
No
No Power (Power LED indicator still in red)
Go to the adjustment process mode.
Move the cursor to ERROR NO RESET
and click on it (to reset to zero).
Turn off the power.
Is the power turned on again?
1
MODEL A628
INCH SIZE 20
ERROR NO RESET 0
PUBLIC MODE OFF
V-CHIP 1
EXT CONTROL OFF
VER ROM
*
.
**
A GAIBU
*
.
***
Note:
This model is equipped with the lamp error detection function that detects the current
flowing into the fluorescent lamp and protects the backlight lamp drive circuit.
If a lamp error is detected, the microprocessor interrupts the unit and the ERROR NO
RESET setting will go up.
When the ERROR NO RESET setting has reached "5", the microprocessor turns and
keeps off the unit's power. To resume the power, take the above procedure to clear the
ERROR NO RESET setting.
Check the following points.
(1) Backlight lamp
(2) Inverter circuit Sub PWB F6701, Q6719, Q6720, Q6721, Q6722, Q6723,
Q6724 and their peripheral parts as well as pins (187) of IC801, Q7752
(3) Lamp error detection circuit Q6703, Q6704, IC6701 and their peripheral parts
as well as pin (42) of IC2001
Page 30
30
LC-20B8U-S LC-20B9U-S LC-20B9U-SM
TROUBLE SHOOTING TABLE (Continued)
Check the secondary
load of T7001.
Is pin (10) of IC7002
and IC7001 at "H"?
Check the load of
IC7002 and IC7001 and
its peripheral circuits.
Is the primary
oscillation wave of
T7001 as specified?
Are the secondary
outputs of T7001 +5V, -
12V, +35V and +9V?
Is there DC 12V input at
T7001 and pin (8) of
IC7301?
Is the output voltage of
IC7002 and IC7001 as
specified?
Check the load of IC701
thru IC703.
Check T7701, IC7701
and their peripheral
circuits.
Check the primary side
of T7001, IC7301 and
its peripheral circuits.
Disconnect F7701. Is
the load short-circuited?
Is pin (187) of IC801 at
"H" or pulse?
Check the line in
question, IC801 and its
peripheral circuits.
Check the primary side
of T7001, Q7001 and
its peripheral circuits.
Check pin (72) of
IC2001, pin (12) of
SC2004 and pin (12)
of P7702.
No video and audio output (no power) No fluorescent lamp light-up
No No
No
No
No
No
No
Are Q6719-Q6724 free
from short-circuit?
Check Q6719-Q6724 and
their peripheral part.
No
No
Are F7701 as specified?
Replace F7701.
Is F6701 normal?
Replace F6701.
Yes
Replace and check the
fluorescent lamp.
Yes
Yes
Is the oscillation
waveform of the primary
side of T6701-T6712
normal?
Check the peripheral
parts of Q6719-Q6724
and the connecting cable.
No
Yes
Yes
Yes
Yes
Yes Yes
Yes Yes
Check the microprocessor's adjustment process menu for wrong settings.
Page 31
31
LC-20B8U-S LC-20B9U-S LC-20B9U-SM
TROUBLE SHOOTING TABLE (Continued)
No pictures come out (1/2).
All pictures do not come out.
No TV pictures come out.
No Input 3 pictures come out. No Input 4 pictures come out.
Check if the adjustment process menu of the microcomputer is set properly.
No No No No No
No
No
No
No
No
No
Yes
Yes
Yes
Yes
Yes
No S video pictures come out.
No
No
Yes
Yes
Yes
No Input 2 pictures come out.
No
Yes
No pictures come out (2/2).
No PC pictures come out.
No
No
No
Yes
Yes
Yes
No
Yes
Does the
test pattern
of the LCD
controller
come out?
Are the
input and
output of
IC801 as
specified?
No TV, Input 3 or Input 4
pictures come out.
Check
IC801 and
its
peripheral
circuitry.
Is the input
at pin (40)
of IC801
as
specified?
Check the
IC801 VIDEO
line and its
peripheral
parts.
Is the output
at pin (19) of
the tuner as
specified?
Are the
input and
output of
IC3401 as
specified?
Check
IC3401 and
its peripheral
parts.
Check the
power supply
line.
Check the
line in
question.
Check
IC3401 and
its peripheral
parts.
Check the
tuner and its
peripheral
parts.
Check the line
in question.
Check
IC3401 and
its peripheral
parts.
Are the
voltages at
pins (6), (7)
and (9) of the
tuner as
specified?
Is the input
at pin (47)
of IC3401
as
specified?
Is the
output at
pin (43) of
IC3401 as
specified?
Check the
line in
question.
Is the
output at
pin (43) of
IC3401 as
specified?
Is the input
at pin (1) of
IC3401 as
specified?
Check the
line in
question.
Check
IC3401 and
its peripheral
parts.
Is the input
at pin (8) of
IC3401 as
specified?
Is the
output at
pin (43) of
IC3401 as
specified?
No
No
Yes Yes
Yes
Is the input
at pin (40)
of IC801 as
specified?
Is the input
at pin (40)
of IC801 as
specified?
Check
IC801 and
its input
line and
peripheral
parts.
Check
IC801 and
its input
line and
peripheral
parts.
Check
IC801 and
its input
line and
peripheral
parts.
Are the inputs at pins
(3), (6) and (10) of
IC403 as specified?
Is the voltage at pin (16)
of IC403 as specified?
Are the outputs at pins
(4), (7) and (9) of IC403
as specified?
Are the inputs at pins
(43), (48) and (54) of
IC8701 as specified?
Is the output of IC8701
as specified?
Is the input of IC801 as
specified?
No
Yes
No
Yes
Check the output of IC801,
the input and output of
IC1201 and their
peripheral parts.
Are the
inputs at pins
(3) and (5) of
IC3401 as
specified?
Check the
SY line, SC
line and
peripheral
parts of
J3401.
Check the
lines and
peripheral
parts of
J3410.
Check
J3401 and
its
peripheral
parts.
Are the
outputs at
pins (43)
and (45) of
IC3401 as
specified?
No
Are the
inputs at
pins (31)
and (40) of
IC801 as
specified?
Are the
inputs at
pins (3),
(7) and
(27) of
IC3403 as
specified?
No Input 1 pictures come out.
No
No
Yes
Yes
Check the
lines and
peripheral
parts of
J3410.
Are the
inputs at
pins (1), (5)
and (25) of
IC3403 as
specified?
Check
IC3403 and
its
peripheral
parts.
Are the
outputs at
pins (11),
(14) and (17)
of IC3403 as
specified?
Check the input line
and its peripheral
parts.
Check Q401, Q402
and Q403.
Check the power
supply line.
Check the line in
question.
Check IC8701 and
its peripheral parts.
Check IC801 and
its peripheral parts.
No
Yes
No
Yes
Check the input line
and its peripheral
parts.
Check IC8701 and
its peripheral parts.
Check IC801 and its
peripheral parts.
No
Yes
Is the output of IC8701
as specified?
Are the inputs at pins (5),
(13) and (20) of IC8701 as
specified?
Is the input of IC801 as
specified?
Check the output of IC801,
the input and output of
IC1201 and their
peripheral parts.
Check if the adjustment process menu of the microcomputer
is set properly.
Page 32
32
LC-20B8U-S LC-20B9U-S LC-20B9U-SM
TROUBLE SHOOTING TABLE (Continued)
No sounds come out.
No sounds come out from the speakers.
Yes
Yes
No
No sounds come out from the monitor output.
Is pin (58) of IC2001 at "L"?
Is the signal of the collector of Q3403 at "L"?
Check the peripheral parts of IC3201.
Yes
Yes
Yes
No
No
No
No
No
Perform checking from Q3403 to pin
(58) of IC2001.
Perform the following checking.
1No TV sounds come out: Check the
peripheral parts of Q3203, Q3204 and
the peripheral parts of TU3401.
2No input 3 sounds come out: Perform
checking from J3403 to pins (2) and (4)
of IC3401.
3No input 4 sounds come out: Perform
checking from J3403 to pins (9) and
(11) of IC3401.
4No input 1 input sounds come out:
Perform checking from J3405 to pins
(46) and (48) of IC3401.
5No input 2 sounds come out: Perform
checking from J3405 to pins (22) and
(24) of IC3401.
6No PC input sounds come out: Perform
checking from J3409 to pins (47) and
(48) of IC3201.
Check Q3403, Q3401 and Q3402.
Yes
No
Check the input line and its
peripheral parts.
Is pin (43) of IC2001 at "L"?
Yes
No
No
Perform checking from Q3413 to
pin (43) of IC2001.
Yes
Check J3403 and its peripheral parts.
Yes
Check the peripheral parts of IC3404.
Do all the input modes (TV, Input 1~4) fail to
produce sounds?
Perform the following checking.
1
Is the monitor output set to "Sound Fixed" or
"Sound Variable"?
2
Is the sound volume level sufficient?
3
Is the muting effect turned off?
4
Are the headphones disconnected?
Do the following.
1
Set the monitor output to "Sound
Fixed".
2
Raise the sound volume level.
3
Turn off the muting effect.
4
Disconnect the headphones.
Perform the following checking.
1
Do sounds come out from the speakers?
2
Is the monitor output connected properly?
3
Is the muting effect turned off?
Is the audio signal outputted from pins (36) (Rch)
and (37) (Lch) of IC3201?
Do the following.
1
Perform checking according to the
steps under "No sounds come out
from the speakers".
2
Connect the monitor output
properly.
3
Turn off the muting effect.
Are the inputs at pins (2) and (12) of IC3404 as
specified?
Are the outputs at pins (14) and (15) of IC3404 as
specified?
No
Yes
No
Yes
Yes
No
Is pin (53) of IC2001 at
L”?
Muting effect is on. Check the SP
MUTE line.
Are input and output of IC3201 as specified?
Check IC3201 and its peripheral
parts.
Are inputs at pins (2) and (4) as well as outputs
at pins (8) and (12), all of IC3304, as specified?
Check the speakers and their peripheral parts.
Check the line in question, IC3304 and
its peripheral parts.
Page 33
33
LC-20B8U-S LC-20B9U-S LC-20B9U-SM
TROUBLE SHOOTING TABLE (Continued)
Yes
No
Yes
No
No
Yes
No
No
Yes
Yes
No
Yes
No
No
Yes
Yes
Yes
No
No
Yes
Yes
No
No colors come out.
No S video colors come out.
No input 1, input 2 colors come out.
No PC picture colors come out.
Check if the adjustment process menu of the microcomputer is set properly.
Check IC1201,
its peripheral
circuitry and the
LCD panel.
Does the test
pattern of the
LCD controller
come out
properly?
Check IC801 and
its peripheral
circuits.
Check the SC
line of J3401
and its
peripheral
parts.
Is the input at
pin (5) of
IC3401 as
specified?
Check IC3401
and its
peripheral
parts.
Is the output at pin
(45) of IC3401 as
specified?
Check the lines
of J3410 and
their peripheral
parts.
Is the input of
IC3403 as
specified?
Check IC3403
and its
peripheral parts.
Are the outputs at
pins (11) and (14) of
IC3403 as specified?
Check the input
line and its
peripheral
parts.
Is the input at pin
(31) of IC801 as
specified?
Check the output of
IC801, the input
and output of
IC1201 and their
peripheral parts.
Check the input
line and its
peripheral
parts.
Check IC8701
and its
peripheral
parts.
Check
IC8701
and its
peripheral
parts.
Check the
input line
and its
peripheral
parts.
Are the
inputs and
outputs of
IC8701 as
specified?
Is the input
of IC801 as
specified?
Check the
output of
IC801, the
input and
output of
IC1201 and
their
peripheral
parts.
Are the inputs at
pins (8), (17)
and (23) of
IC8701 as
specified?
Is the output of
IC8701 as
specified?
Check IC801
and its
peripheral
parts.
Is the input of
IC801 as
specified?
Check the output of
IC801, the input
and output of
IC1201 and their
peripheral parts.
No TV colors
come out.
No input 3,
input 4 colors
come out.
Page 34
34
LC-20B8U-S LC-20B9U-S LC-20B9U-SM
MAJOR IC INFORMATION
1. IC2001 (RH-iXA628WJN1Q), (RH-iXA628WJZZQ) 1-1.Pin Connections
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 29 30
P6_7/TXD1/SDA1
50 49 48 47 46 45 44 43 42 41 40 39 38 37 36 35 34 33 32 31
P6_6/RXD1/SCL1
P6_5/CLK1
P6_4/CTS1/RTS1/CTS0/CLKS1
P6_3/TXD0/SDA0
P6_2/RXD0/SCL0
P6_1/CLK0
P6_0/CTS0/RTS0
P5_7/RDY/CLKOUT
P5_6/ALE
P5_5/HOLD
P5_4/HLDA
P5_3/BCLK
P5_2/RD
P5_1/WRH/BHE
P5_0/WRL/WR
P4_7/CS3
P4_6/CS2
P4_5/CS1
P4_4/CS0
80 79 78 77 76 75 74 73 72 71 70 69 68 67 66 65 64 63 62 61 60 59 58 57 56 55 54 53 52 51 81 82
83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99
100
RH-IXA628WJN1Q RH-IXA628WJZZQ
Note 1: N channel open drain outputs
Pin Connections (Top View)
P0_7/AN0_7/D7 P0_6/AN0_6/D6 P0_5/AN0_5/D5 P0_4/AN0_4/D4 P0_3/AN0_3/D3 P0_2/AN0_2/D2 P0_1/AN0_1/D1 P0_0/AN0_0/D0
P10_7/AN7/KI3 P10_6/AN6/KI2 P10_5/AN5/KI1 P10_4/AN4/KI0
P10_3/AN3 P10_2/AN2 P10_1/AN1
VSS
P10_0/AN0
VREF AVCC
P9_7/ADTRG/SIN4
P1_0/D8
P1_1/D8
P1_2/D10
P1_3/D11
P1_4/D12
P1_5/D13/INT3
P1_6/D17/INT4
P1_7/D15/INT5
P2_0/AN2_0A0(/D0/)
P2_1/AN2_1A1(/D1/D0)
P2_2/AN2_2A2(/D2/D1)
P2_3/AN2_3A3(/D3/D2)
P2_4/AN2_4A4(/D4/D3)
P2_5/AN2_5A5(/D5/D4)
P2_6/AN2_6A6(/D6/D5)
P2_7/AN2_7A7(/D7/D6)
VSS
P3_0/A8(/_/D7)
VCC2
P3_1/A9
P3_2/A10
P3_3/A11
P3_4/A12
P3_5/A13
P3_6/A14
P3_7/A15
P3_0/A16
P3_1/A17
P3_2/A18
P3_3/A19
P9_6/ANEX1/SOUT4
P9_5/ANEX0/CLK4
P9_4/DA1/TB4IN
P9_3/DA0/TB3IN
P9_2/TB2IN/SOUT3
P9_1/TB1IN/SIN3
P9_0/TB0IN/CLK3
BYTE
CNVSS
P8_7/XCIN
P8_XCOUT
RESET
XOUT
VSS
XIN
VCC1
P8_5/NMI
P8_INT2/ZP
P8_3/INT1
P8_2/INT0
P8_1/TA4IN
P8_0/TA4OUT/U
P7_7/TA3IN
P7_6/TA3OUT
P7_5/TA2IN/
P7_4/TA2OUT/W
P7_3/CTS2/RTS2/TA1IN/
P7_2/ACLK2/TA1OUT/V
P7_1/RXD2/SCL2/TA0INTB5IN(
Note
1)
P7_0/TXD2/SDA2/TA0OUT(
Note
1)
Page 35
35
LC-20B8U-S LC-20B9U-S LC-20B9U-SM
Pin No. Pin Name I/O Pin Name Function
1 P96/ANEX1/Sout4 O 2 P95/ANEX0/CLK4 O 3 P94/DA1/TB4in I PC-H PC signal HS frequency judgment 4 P93/DA0/TB3in I D_FIL Component filter switching DA
(No function) 5 P92/TB2in/Sout3 I PC-V PC signal VS frequency judgment 6 P91/TB1in/Sin3 I CSYNC Composite sync signal 7 P90/TB0in/CLK3 I IREM1 Remote control signal 8 BYTE I BYTE Connected to GND 9 CNVss I CNVss Connected to GND (connected to Vcc1 for CNVSS at flash write)
10 P87/Xcin I Xcin 32kHz quartz oscillator (for clock count)
O P87 (No function)
11 P86/Xcout O Xcout 32kHz quartz oscillator (for clock count)
O P86 (No function) 12 RESET I RESET Microprocessor reset at "L" 13 Xout O Xout System clock output 14 Vss I Vss GND 15 Xin I Xin System clock input 16 Vcc1 I Vcc1 VDD (+3.3V) 17 P85/NMI I NMI (Connected to Vcc1 for NMI at flash write) 18 P84/INT2 O 19 P83/INT1 I PSWin Main power monitor 20 P82/INT0 I VSYNC VSYNC signal input 21 P81/TA4in O RS_POWER RS, DS control 22 P80/TA4out O AC_Ctrl AC adaptor power consumption control 23 P77/TA3in O DAC1CS Gradation control IC chip select 24 P76/TA3out O 25 P75/TA2in O 26 P74/TA2out O 27
P73/CTS2_/RTS2_/TA1in
I/O SDA2 Serial data line 2 for I2C bus 2 system 28 P72/CLK2/TA1out I/O SCL2 Serial clock line 2 for I2C bus 2 system (EEPROM, AV SW(J), BS TUNER) 29
P71/RxD2/SCL2/TA0in/TB5in
I/O SCL1 Serial clock line 1 for I2C bus 2 system (others, AV SW(not J)) 30
P70/TxD2/SDA2/TA0out
I/O SDA1 Serial data line 1 for I2C bus 2 system 31 P67/TxD1/SDA1 O TxD (TxD at flash write) 32 P66/RxD1/SCL1 O RxD (RxD at flash write) 33 P65/CLK1 O SCLK (Clock input at flash write) 34
P64/CTS1/RTS1/CTS0/CLKS1
O BUSY (Busy output at flash write) 35 P63/TxD0/SDA0 O MPWEL Data signal input for DVP 4-line serial (MPWEL) 36 P62/RxD0/SCL0 I MPOE Data output signal for DVP 4-line serial (MPOE) 37 P61/CLK0 O MPWEH Clock for DVP 4-line serial (MPWEH) 38 P60/CTS0/RTS0 O 39 P57/RDY/CLKout O MAINSW LED power control 40 P56/ALE O 41 P55/HOLD I POWin(EPM) DC/DC start detect (connected to Vss for EPM at flash write) 42 P54/HLDA I(O) L_ERR Fluorescent lamp error detect 43 P53/BCLK O S IN/OUT Audio input/output select 44 P52/RD O COMP AV selector switch 45 P51/WRH/BHE O TIMER(RLED) On timer LED control (power RLED control for overseas destinations) 46 P50/WRL/WR I MRDY(CE) I2C bus open connection detect (connected to Vcc2 for CE at flash write) 47 P47/CS3 O LEDPOW(GLED) Power LED control (common with sub-power control in Japan)
(power GLED control for overseas destinations
1-2. Pin Functions
Page 36
36
LC-20B8U-S LC-20B9U-S LC-20B9U-SM
Pin No. Pin Name I/O Pin Name Function
48 P46/CS2 O 49 P45/CS1 O S_SEL AV selector switch 50 P44/CS0 O VSHOUT Panel gate driver voltage control 51 P43/A19 O 52 P42/A18 O HP MUTE Headphones mute (at "H") 53 P41/A17 O SP MUTE1 Main speaker mute 54 P40/A16 O 55 P37/A15 I HP DET Headphones detect 56 P36/A14 O SSTBY Amplifier power control (1-bit-dropout models) 57 P35/A13 I VSH IN Panel gate driver voltage confirm 58 P34/A12 O LMUTE Line out audio mute 59 P33/A11 O V IN/OUT Video input/output select 60 P32/A10 O SRESET Audio IC reset output 61 P31/A9 O 62 Vcc2 I Vcc2 Power input 63 P30/A8 O TCON_OUT_CTL DVP control output control 64 Vss I Vss GND 65 P27/AN27/A7 O V_SEL AV selector switch 66 P26/AN26/A6 O TV_SEL AV selector switch 67 P25/AN25/A5 O
BUS SELECT H(I2C)
DVP I2C/4-line communication system select (H: I2C control, L: Serial control) 68 P24/AN24/A4 O MPCE DVP 4-line serial chip enable (MPCE)/DVP slave address select 69 P23/AN23/A3 O OPCLED OPC LED light-up 70 P22/AN22/A2 O INV_POW
Separately-excited inverter power control (with separately-excited-type models only) 71 P21/AN21/A1 O VGH Panel power control 72 P20/AN20/A0 O POWout DC/DC control output 73 P17/D15/INT5 I ADPPOW Adaptor ON/OFF input 74 P16/D14/INT4 O DACOUTCON Gradation control IC output control (gradation IC) 75 P15/D13/INT3 O MP_RCS Temperature sensor chip select 76 P14/D12 I/O MP_RDA Temperature sensor data input 77 P13/D11 O 78 P12/D10 O MP_DA Gradation control IC data output 79 P11/D9 O MP_CLK Temperature sensor or gradation control IC clock output 80 P10/D8 O DDC_RESET Video IC reset output (Renesas DVP, 3D YC) 81 P07/AN07/D7 I KEY4 Key input 4 82 P06/AN06/D6 I KEY5 Key input 5 83 P05/AN05/D5 O VLS Panel & gradation IC power control 84 P04/AN04/D4 O 85 P03/AN03/D3 O 86 P02/AN02/D2 O SHORT_DET Over-current protection detect 87 P01/AN01/D1 I INCH2 Screen size ID port 2 88 P00/AN00/D0 I INCH1 Screen size ID port 1 89 P107/AN7/KI3 I AFT AFT voltage input 90 P106/AN6/KI2
O 91 P105/AN5/KI1 I KEY1 Key input 1 92 P104/AN4/KI0 I KEY2 Key input 2 93 P103/AN3 O 94 P102/AN2 I OPC_IN OPC sensor level input 95 P101/AN1 O 96 AVss I AVss Connected to GND 97 P100/AN0 O 98 VREF I VREF Connected to +3.3V 99 AVcc I AVcc Connected to +3.3V
100 P97/ADtrg/Sin4 O
Page 37
37
LC-20B8U-S LC-20B9U-S LC-20B9U-SM
2. IC801(RH-iXB170WJZZQ) 2-1. Pin Connections
216
215
214
213
212
211
210
209
208
207
206
205
204
203
202
201
200
199
198
197
196
195
194
193
192
191
190
189
188
187
186
185
184
183
182
181
180
179
178
177
176
175
174
173
172
171
170
169
168
167
166
165
164
163
162 161 160 159 158 157 156 155 154 153 152 151 150 149 148 147 146 145 144 143 142 141 140 139 138 137 136 135 134 133 132 131 130 129 128 127 126 125 124 123 122 121 120 119 118 117 116 115 114 113 112 111 110 109
5556575859606162636465666768697071727374757677787980818283848586878889909192
939495969798
99
100
101
102
103
104
105
106
107
108
DGND
DVDD1.8
MPWEH
MPWEL
MPOE
MPCE
MPAH/PCXLK1
DVDDSD
MDQ15/C656IN7
MDQ14/C656IN6
MDQ13/C656IN5
MDQ12/C656IN4
MDQ11/C656IN3
DVDD3.3
DGND
DVDD1.8
MDQ10/C656IN2
MDQ9/C656IN1
MDQ8/C656IN0
MDQ7/C656OUT
MDQ6/C656OUT
MDQ5/C656OUT
MDQ4/C656OUT
MDQ3/C656OUT
MDQ2/C656OUT
MDQ1/C656OUT
DVDDSD
DGND
MPSEL0
XIN
XOUT
MPSEL1
MDQ0/C656OUT
QE/PXCLK0QHQV
QDRVHA/QOE
DVDD3.3
DGND
DVDD1.8
QDRVHB
QDRVHC
QDRVHD
QDRVHE
DVDD3.3
DGND
DVDDSD
QDRVHF
QDRVVA
QDRVVB
QCLKL
QGL0
DVDD1.8
DGND
DVDD3.3
TEST0
LPF1
TEST1
QGL1
QGL2
QGL3
QGL4
DVDD3.3
DGND
QGL5
QGL6
QGL7
QBL0
QBL1
DVDD1.8
DGND
DVDD3.3
QBL2
QBL3
QBL4
QBL5
QBL6
QBL7
QRL0
QRL1
QRL2
DVDD1.8
DGND
DVDD3.3
QRL3
QRL4
QRL5
QRL6
QRL7
QCLKR
QGR0
QGR1
DVDD1.8
DGND
DVDD3.3
QGR2
QGR3
QGR4
QGR5
QGR6
QGR7
DVDD3.3
DGND
QBR0
QBR1
QBR2
QBR3
DVDD3.3
DGND
DVDD1.8
QBR4
QBR5
QBR6
QBR7
QRR0
DVDDSD
DGND
DVDD3.3
QRR1
QRR2
QRR3
DVDD1.8
DGND
DVDD3.3
QRR4
QRR5
QRR6
QRR7
TSTCLK
QBLCA
QBLCB
QBLCC
QBLCD
DGND
DVDDSD
PXCLK
PXD00
PXD01
PXD02
PXD03
PXD04
PXD05
DVDD1.8
DGND
DVDD3.3
PXD06
PXD07
PXD10
PXD11
PXD12
PXD13
PXD14
DVDDSD
PXD15
PXD16
PXD17
PXD20
PXD21
PXD22
PXD23
DVDD1.8
DGND
1 D VDD3.3 2 P XD24
3 P XD25 4 P XD26 5 P XD27 6 VDIN 7 H DIN/FBIN
8 D VDD3.3 9 DGND
10 V RPD 11 V ROD 12 V RMD 13 V RND 14 A VDDD2 15 A VSSD2 16 A VDDD1 17 A VSSD1 18 V RPC 19 V ROC 20 V RMC 21 VINC 22 A VDDC2 23 A VSSC2 24 A VDDC1 25 A VSSC1 26 D VDD 27 D VSS 28 V RPB 29 V ROB 30 V RMB 31 V IM1B 32 A VDDB2 33 V IM2B 34 A VSSB2 35 A VDB1 36 A VSSB1 37 V RPA 38 V ROA 39 V RMA 40 V IM1A 41 A VDDA2 42 V IN2A 43 A VSSA2 44 V IN3A 45 A VDDA1 46 A VSSA1 47 S VSS 48 D VDD3.3 49 D GND 50 R ESET
51 Q OECTL 52 SDA 53 SCL 54 D VDD3.3
RH-IXB170WJZZQ
Pin Connections (Top View)
Page 38
38
LC-20B8U-S LC-20B9U-S LC-20B9U-SM
2-2. Pin Functions
Pin No. Pin name Function Pin status
1 DVDD33 Digital 3.3V power 2 PXD24 Pixel data signal (C) input/output Pull-up when not used 3 PXD25 Pixel data signal (C) input/output Pull-up when not used 4 PXD26 Pixel data signal (C) input/output Pull-up when not used 5 PXD27 Pixel data signal (C) input/output Pull-up when not used 6 VDIN Vertical sync signal input/output Pull-up when not used 7 HDIN/FBIN Horizontal sync signal input/output/FB (SCART) signal input Pull-up when not used 8 DVDD33 Digital 3.3V power 9 DGND Digital GND
10 VRPD ADC (Dch) VRT terminal (0.1µF capacitor connected)
11 VROD ADC (Dch) VRM terminal (0.1µF capacitor connected) 12 VRMD ADC (Dch) VRB terminal (0.1µF capacitor connected) 13 VIND ADC (Dch) analog input 1 (CVBS) 14 AVDDD2 ADC analog 3.3V power 15 AVSSD2 ADC analog GND 16 AVDDD1 ADC analog 3.3V power 17 AVSSD1 ADC analog GND 18 VRPC ADC (Cch) VRT terminal (0.1µF capacitor connected) 19 VROC ADC (Cch) VRM terminal (0.1µF capacitor connected) 20 VRMC ADC (Cch) VRB terminal (0.1µF capacitor connected) 21 VINC ADC (Cch) analog input 1 (COMP-Pr/R) 22 AVDDC2 ADC analog 3.3V power 23 AVSSC2 ADC analog GND 24 AVDDC1 ADC analog 3.3V power 25 AVSSC1 ADC analog GND 26 DVDD ADC digital 3.3V power 27 DVSS ADC digital GND 28 VRPB ADC (Bch) VRT terminal (0.1µF capacitor connected) 29 VROB ADC (Bch) VRM terminal (0.1µF capacitor connected) 30 VRMB ADC (Bch) VRB terminal (0.1µF capacitor connected) 31 VIN1B ADC (Bch) analog input 1 (YC-C) 32 AVDDB2 ADC analog 3.3V power 33 VIN2B ADC (Bch) analog input 2 (COMP-Pb/B) 34 AVSSB2 ADC analog GND 35 AVDDB1 ADC digital 3.3V power 36 AVSSB1 ADC digital GND 37 VRPA ADC (Ach) VRT terminal (0.1µF capacitor connected) 38 VROA ADC (Ach) VRM terminal (0.1µF capacitor connected) 39 VRMA ADC (Ach) VRB terminal (0.1µF capacitor connected) 40 VIN1A ADC (Ach) analog input 1 (CVBS1) 41 AVDDA2 ADC analog 3.3V power 42 VIN2A ADC (Ach) analog input 2 (YC-Y) 43 AVSSA2 ADC analog GND 44 VIN3A ADC (Ach) analog input 3 (COM-Y/G) 45 AVDDA1 ADC analog 3.3V power 46 AVSSA1 ADC analog GND 47 SVSS Analog guard ring GND 48 DVDD33 Digital 3.3V power 49 DGND Digital GND 50 RESET Reset signal input 51 QOECTL Try state control for panel output line control signal
'0': Normal output, '1': High impedance 52 HDIN2 Line 2's HD input Pull-up when not used 53 VDIN2 Line 2's VD input Pull-up when not used 54 DVDD33 Digital 3.3V power 55 DGND Digital GND 56 DVDD 18 Digital 1.8V power 57 MPWEH MPSEL0='1' setting (parallel bus): Write enable upper (negative polarity) Pull-up when not used
MPSEL0='0' setting (4-line serial bus) MST: Serial clock input
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Pin No. Pin name Function Pin status
58 MPWEL MPSEL0='1' setting (parallel bus): Write enable lower (negative polarity) Pull-up when not used
MPSEL0='0' setting (4-line serial bus) MSD: Serial data input
59 MPOE MPSEL0='1' setting (parallel bus): Output enable (negative polarity) Pull-up when not used
MPSEL0='0' setting (4-line serial bus) MSQ: Serial data output
60 MPCE MPSEL0='1' setting (parallel bus): Chip enable (negative polarity) Pull-up when not used
MPSEL0='0' setting (4-line serial bus) MSN: Serial select 61 MPAH/PCXLK1 (Parallel bus) address latch enable (negative polarity)/ITU-R656 clock input 62 DVDDSD Digital 3.3V power 63 MDQ15/C656IN7 MPSEL0='1' setting: Data input/output (address input) Pull-up when not used
' '0' setting: Microprocessor expander/ITU-R656 input
64 MDQ14/C656IN6 MPSEL0='1' setting: Data input/output (address input) Pull-up when not used
' '0' setting: Microprocessor expander/ITU-R656 input
65 MDQ13/C656IN5 MPSEL0='1' setting: Data input/output (address input) Pull-up when not used
'0' setting: Microprocessor expander/ITU-R656 input
66 MDQ12/C656IN4 MPSEL0='1' setting: Data input/output (address input) Pull-up when not used
'0' setting: Microprocessor expander/ITU-R656 input
67 MDQ11/C656IN3 MPSEL0='1' setting: Data input/output (address input) Pull-up when not used
' '0' setting: Microprocessor expander/ITU-R656 input
68 DVDD3.3 Digital 3.3V power 69 DGND Digital GND 70 DVDD1.8 Digital 1.8V power 71 MDQ10/C656IN2 MPSEL0='1' setting: Data input/output (address input) Pull-up when not used
'0' setting: Microprocessor expander/ITU-R656 input
72 MDQ9/C656IN1 MPSEL0='1' setting: Data input/output (address input) Pull-up when not used
'0' setting: Microprocessor expander/ITU-R656 input
73 MDQ8/C656IN0 MPSEL0='1' setting: Data input/output (address input) Pull-up when not used
'0' setting: Microprocessor expander/ITU-R656 input
74 MDQ7/C656OUT7 MPSEL0='1' setting: Data input/output (address input) Pull-up when not used
'0' setting: Microprocessor expander/ITU-R656 input
75 MDQ6/C656OUT6 MPSEL0='1' setting: Data input/output (address input) Pull-up when not used
'0' setting: Microprocessor expander/ITU-R656 input
76 MDQ5/C656OUT5 MPSEL0='1' setting: Data input/output (address input) Pull-up when not used
'0' setting: Microprocessor expander/ITU-R656 input
77 MDQ4/C656OUT4 MPSEL0='1' setting: Data input/output (address input) Pull-up when not used
'0' setting: Microprocessor expander/ITU-R656 input
78 MDQ3/C656OUT3 MPSEL0='1' setting: Data input/output (address input) Pull-up when not used
'0' setting: Microprocessor expander/ITU-R656 input
79 MDQ2/C656OUT2 MPSEL0='1' setting: Data input/output (address input) Pull-up when not used
'0' setting: Microprocessor expander/ITU-R656 input
80 MDQ1/C656OUT1 MPSEL0='1' setting: Data input/output (address input) Pull-up when not used
'0' setting: Microprocessor expander/ITU-R656 input 81 DVDDSD Digital 3.3V power 82 DGND Digital GND 83 MPSEL0 Parallel/serial bus type selection
'0': 4-line serial bus, '1': /Multiplex parallel 84 XIN Oscillation buffer input 85 XOUT Oscillation buffer output 86 MPSEL1 MPSEL0='0' setting: '0': 4-line serial bus 87 MDQ0/C656OUT0 MPSEL0='1' setting: Data input/output (address input)
' '0' setting: Microprocessor expander/ITU-R656 output
88 QE/PXCLK0 Panel data enable signal output/ITU-R656 clock output 89 QH Panel horizontal sync signal output 90 QV Panel vertical sync signal output 91 QDRVHA/QOE Panel driver signal output A (variable horizontal period)/Panel data enable
signal output 92 DVDD33 Digital 3.3V power 93 DGND Digital GND 94 DVDD18 Digital 1.8V power 95 QDRVHB Panel driver signal output B (variable horizontal period) 96 QDRVHC Panel driver signal output C (variable horizontal period)
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Pin No. Pin name Function Pin status
97 QDRVHD Panel driver signal output D (variable horizontal period) 98 QDRVHE Panel driver signal output E (variable horizontal period)
99 DVDD33 Digital 3.3V power 100 DGND Digital GND 101 DVDDSD Digital 3.3V power 102 QDRVHF Panel driver signal output F (variable horizontal period) 103 QDRVVA Panel driver signal output A (variable vertical period) 104 QDRVVB Panel driver signal output B (variable vertical period) 105 QCLKL Panel clock signal output (L) 106 QGL0 Panel G signal (L) output 107 DVDD18 Digital 1.8V power 108 DGND Digital GND 109 DVDD33 Digital 3.3V power 110 TEST0 Test signal input 1 Connected to GND 111 LPF1 PLL1 (panel clock) LPF terminal 112 TEST1 Test signal input 2 Connected to GND 113 QGL1 Panel G signal (L) output 114 QGL2 Panel G signal (L) output 115 QGL3 Panel G signal (L) output 116 QGL4 Panel G signal (L) output 117 DVDD33 Digital 3.3V power 118 DGND Digital GND 119 QGL5 Panel G signal (L) output 120 QGL6 Panel G signal (L) output 121 QGL7 Panel G signal (L) output 122 QBL0 Panel B signal (L) output 123 QBL1 Panel B signal (L) output 124 DVDD18 Digital 1.8V power 125 DGND Digital GND 126 DVDD33 Digital 3.3V power 127 QBL2 Panel B signal (L) output 128 QBL3 Panel B signal (L) output 129 QBL4 Panel B signal (L) output 130 QBL5 Panel B signal (L) output 131 QBL6 Panel B signal (L) output 132 QBL7 Panel B signal (L) output 133 QRL0 Panel R signal (L) output 134 QRL1 Panel R signal (L) output 135 QRL2 Panel R signal (L) output 136 DVDD18 Digital 1.8V power 137 DGND Digital GND 138 DVDD33 Digital 3.3V power 139 QRL3 Panel R signal (L) output 140 QRL4 Panel R signal (L) output 141 QRL5 Panel R signal (L) output 142 QRL6 Panel R signal (L) output 143 QRL7 Panel R signal (L) output 144 QCLKR Panel clock signal output (R) 145 QGR0 Panel G signal (R) output 146 QGR1 Panel G signal (R) output 147 DVDD18 Digital 1.8V power 148 DGND Digital GND 149 DVDD33 Digital 3.3V power 150 QGR2 Panel G signal (R) output 151 QGR3 Panel G signal (R) output 152 QGR4 Panel G signal (R) output 153 QGR5 Panel G signal (R) output 154 QGR6 Panel G signal (R) output 155 QGR7 Panel G signal (R) output 156 DVDD33 Digital 3.3V power
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Pin No. Pin name Function Pin status
157 DGND Digital GND 158 QBR0 Panel B signal (R) output 159 QBR1 Panel B signal (R) output 160 QBR2 Panel B signal (R) output 161 QBR3 Panel B signal (R) output 162 DVDD33 Digital 3.3V power 163 DGND Digital GND 164 DVDD18 Digital 1.8V power 165 QBR4 Panel B signal (R) output 166 QBR5 Panel B signal (R) output 167 QBR6 Panel B signal (R) output 168 QBR7 Panel B signal (R) output 169 QRR0 Panel R signal (R) output 170 DVDDSD Digital 3.3V power 171 DGND Digital GND 172 DVDD33 Digital 3.3V power 173 QRR1 Panel R signal (R) output 174 QRR2 Panel R signal (R) output 175 QRR3 Panel R signal (R) output 176 DVDD18 Digital 1.8V power 177 DGND Digital GND 178 DVDD33 Digital 3.3V power 179 QRR4 Panel R signal (R) output 180 QRR5 Panel R signal (R) output 181 QRR6 Panel R signal (R) output 182 QRR7 Panel R signal (R) output 183 TSTCLK Test clock signal input Pull-down when not used 184 QBLCA Backlight signal A 185 QBLCB Backlight signal B 186 QBLCC Backlight signal C 187 QBLCD Backlight signal D 188 DGND Digital GND 189 DVDDSD Digital 3.3V power 190 PXCLK Pixel clock signal input Pull-up when not used 191 PXD00 Pixel data signal (A) input/output Pull-up when not used 192 PXD01 Pixel data signal (A) input/output Pull-up when not used 193 PXD02 Pixel data signal (A) input/output Pull-up when not used 194 PXD03 Pixel data signal (A) input/output Pull-up when not used 195 PXD04 Pixel data signal (A) input/output Pull-up when not used 196 PXD05 Pixel data signal (A) input/output Pull-up when not used 197 DVDD18 Digital 1.8V power 198 DGND Digital GND 199 DVDD33 Digital 3.3V power 200 PXD06 Pixel data signal (A) input/output Pull-up when not used 201 PXD07 Pixel data signal (A) input/output Pull-up when not used 202 PXD10 Pixel data signal (B) input/output Pull-up when not used 203 PXD11 Pixel data signal (B) input/output Pull-up when not used 204 PXD12 Pixel data signal (B) input/output Pull-up when not used 205 PXD13 Pixel data signal (B) input/output Pull-up when not used 206 PXD14 Pixel data signal (B) input/output Pull-up when not used 207 DVDDSD Digital 3.3V power 208 PXD15 Pixel data signal (B) input/output Pull-up when not used 209 PXD16 Pixel data signal (B) input/output Pull-up when not used 210 PXD17 Pixel data signal (B) input/output Pull-up when not used
211 PXD20 Pixel data signal (C) input/output Pull-up when not used 212 PXD21 Pixel data signal (C) input/output Pull-up when not used 213 PXD22 Pixel data signal (C) input/output Pull-up when not used 214 PXD23 Pixel data signal (C) input/output Pull-up when not used 215 DVDD18 Digital 1.8V power 216 DGND Digital GND
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LC-20B8U-S LC-20B9U-S LC-20B9U-SM
BLOCK DIAGRAM
V2-IN
V2-OUT
L, R
5V
Y
V2-OUT
5V
I2C
I2C
SIF
TUNER TU3401
I2C
TV-V
SUB UNIT
3.3V
9V
8V
5V
-12V
31V
9V
5V 8V
SP
5V
L, R-OUT
PC-L,PC-R
V1, SY,SC, L1, R1, S-SW
DL1, DR1
Y1, PB1, PR1
COMPONENT
SELECT
IC3403
Y2, PB2, PR2
DL2, DR2
INPUT 2
J3405 J3410
INPUT1
J3405 J3410
INPUT3
J3401 J3403
PC-AUDIO-IN
J3409
INPUT4
/OUTPUT
J3403
L2/R2-IN/OUT
AV2
IN/OUT
SWITCH
IC3404 Q3413 Q3410 Q3414
L2, R2-IN
AV
SELECT
IC3401
KEY1, KEY2, POW1, POW2(IC2001)
POWER SWITCH
S4202
CONTROL SWITCH
SW4202-4207
DC/DC
T7001
IC7301
Q7001
POW(IC2001)
AC IN
120~240V
CN7701
AC_CTRL(IC2001)
AC/DC
T7701 IC7701 IC7702 IC7703 IC7704
Q7701
Q7751
INVERTER
VCC
SOUND
VCC
3.3V
DC/DC
IC7002
Q7005
17V DC/DC IC7001 Q7006
IC7004
D7012
17V
35V
SP-L/R
SOUND.VCC
AUDIO
AMPLIFIER
IC3206
HEAD
PHONE
AMPLIFIER
IC3305
HP-L/R
(LED UNIT)
AUDIO DECODER
IC3201
3.3
12V
REG.
IC2003
I2C
PC-RGB IN
SC401
EDID
E2PROM
IC401
RE
G
IC8
0
PC-R,G,B,H,V
Y, PB, PR
A-D
CONVERT
E
IC8701
IN
V
31V
POWER UNIT
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CVIN
5V
1.8V
I2C
5V
3.3V
3.3V
MAIN UNIT
I2C
I2C
I2C
CS
HP-L/R
3.3V
.
3
REG.
IC2011
REG. IC805
TV-V,V,SY, SC,Y
A-D
CONVERTER
IC8701
AD-CKO,HSO,VSO R, G, B
REG.
IC802
VIDEO
PROCESSER
IC801
(VIDEODECODER)
(3D Y/C)
(I/P)
(QS)
INV_POW,L_ERR
3.3V
MPU
IC2001
3WIRE
POW,AC_CTRL(POWERUNIT)
3.3V 5V
17V
12V
E2PROM
IC2009
RESET IC2006
INV_OFL,INV_OSC
RSDS
TRANSMITTER
IC1201
CK,R,G,B
L_R,REV,LS,GSP1,GSP2,POWER,GCK,U_D
17V
35V
-12V
REG.
IC1706
IC1703
14.6V
-6.5V 32V
LCD
PANEL
VH0-255 VL0-255
GRADUATION
IC1101
CS-DRIVE
Q1101 Q1102
IREM, LEDPOW, TIMER_LED, OPC_LED, OPC, HPDET, TSENDA, TSENCK,TSENCS
R/C, LED UNIT
OPC
SENSOR
IC4002
TEMP.
SENSOR
IC4001
HEAD
PHONE
JACK
J4001
LED D4001 D4002
R/C
RECEIVER
RMC4001
LAMP
DRIVE
LAMP
ERROR
CHECK
INV.VCC,5V
INV_OFL,INV_OSC
(IC801)
L_ERR,INV_POW
(IC2001)
INVERTER UNIT
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LC-20B8U-S LC-20B9U-S LC-20B9U-SM
OVERALL WIRING DIAGRAM
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LC-20B8U-S LC-20B9U-S LC-20B9U-SM
VOLTAGE MEASUREMENT CONDITION:
1. The voltages at test points are measured on the stable supply voltage of AC 120V. Signals are fed by a color bar signal generator for servicing purpose and the above voltages are measured with a 20k ohm/V tester.
INDICATION OF RESISTOR & CAPACI­TOR:
RESISTOR
1. The unit of resistance “” is omitted. (K=k=1000 , M=M).
2. All resistors are ± 5%, unless otherwise noted. (K= ± 10%, F= ± 1%, D= ± 0.5%)
3. All resistors are 1/16W, unless otherwise noted.
CAPACITOR
1. All capacitors are µF, unless otherwise noted. (P=pF=µµF).
2. All capacitors are 50V, unless otherwise noted.
CAUTION:
This circuit diagram is original one, therefore there may be a slight difference from yours.
SAFETY NOTES:
1.DISCONNECT THE AC PLUG FROM THE AC OUTLET BEFORE REPLACING PARTS.
2.SEMICONDUCTOR HEAT SINKS SHOULD BE REGARDED AS POTENTIAL SHOCK HAZARDS WHEN THE CHASSIS IS OPERATING.
IMPORTANT SAFETY NOTICE:
PARTS MARKED WITH “å” ( ) ARE IMPORTANT FOR MAINTAINING THE SAFETY OF THE SET. BE SURE TO REPLACE THESE PARTS WITH SPECIFIED ONES FOR MAINTAINING THE SAFETY AND PERFORMANCE OF THE SET.
AVIS DE SECURITE IMPORTANT:
LES PIECES MARQUEES “å” ( )SONT IMPORTANTES POUR MAINTENIR LA SECURITE DE L'APPAREIL. NE REMPLACER CES PIEDES QUE PAR DES PIECES DONT LE NUMERO EST SPECIFIE POUR MAINTENIR LA SECURITE ET PROTEGER LE BON FONCTIONNEMENT DE L'APPAREIL.
DESCRIPTION OF SCHEMATIC DIAGRAM
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SCHEMATIC DIAGRAM
Ë
R/C, LED Unit (LC-20B9U-S)
Ë
R/C, LED Unit (LC-20B8U-S, LC-20B9U-SM)
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Ë
MAIN Unit-1/7 (LC-20B9U-S)
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Ë
MAIN Unit-1/7 (LC-20B8U-S, LC-20B9U-SM)
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Ë
MAIN Unit-2/7 (LC-20B9U-S)
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Ë
MAIN Unit-2/7 (LC-20B8U-S, LC-20B9U-SM)
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Ë
MAIN Unit-3/7 (LC-20B9U-S)
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Ë
MAIN Unit-3/7 (LC-20B8U-S, LC-20B9U-SM)
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Ë
MAIN Unit-4/7 (LC-20B9U-S)
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Ë
MAIN Unit-4/7 (LC-20B8U-S, LC-20B9U-SM)
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Ë
MAIN Unit-5/7 (LC-20B9U-S)
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Ë
MAIN Unit-5/7 (LC-20B8U-S, LC-20B9U-SM)
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Ë
MAIN Unit-6/7
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Ë
MAIN Unit-7/7
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Ë
SUB Unit-1/2
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Ë
SUB Unit-2/2
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Ë
POWER Unit-1/3 (LC-20B9U-S)
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Ë
POWER Unit-1/3 (LC-20B8U-S, LC-20B9U-SM)
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Ë
POWER Unit-2/3 (LC-20B9U-S)
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Ë
POWER Unit-2/3 (LC-20B8U-S, LC-20B9U-SM)
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Ë
POWER Unit-3/3
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Ë
INVERTER Unit
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MAIN Unit (Side-A)
PRINTED WIRING BOARD ASSEMBLIES
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MAIN Unit (Chip Parts Side-A)
C2004
LUG2002
SC2004
C2014
R2023
C2013
R2014
R2004
C2012
R2013
C2006
C2005
C2009
R2098
X2001
C2016
IC2011
R2037
R2021
R2041
R2042
C2017 R2045
FL2001
P2002
C2008
IC2001
C2018
C2019
R2047
R2096
C2020
R2087
R2055
R2076
R2056
R2058
R2067
R2073 R2072
R2079
R2080
FB8704
R8726
FB8702
C1723
FB807
C873
C861
C8710
C8715
C8736
C8719
IC802
C8735
C877
C8734
C8716
C8717
C8733
C8718
C1133
R8724
R8703
R851
C878
R852
R1106
R8705
FB806
R850
C889
R8704
C1114
R1107
C867
C1115
C1116
IC80
5
IC11
C1117
R
C
R
C8709 R8701 R8725
R8
7
SC2002
R8719
R8718
IC8701
R8721R8720
L801
R8722 R8723
R8707
C885
R808
R2065
R2077
R2062
R2060
R2057
R2082
R2083
R2054
R2100
Q2022
Q2021
R2053
R2051
R2050
R2049
Q2012
C2021
R2048
R2003
R2005
R2078
R2081
R2002 R2090
R2046
R2105
SC2003
R2088
R2033
R2106
R2044
R2038
R2036
R2103
R2102
R2026
R2032
R2094
R2040
R2029
R2101
R2001
R2104
R2028
C2011
IC2010
C2007
LUG2003
Q2001
R2016
R2019
R2020
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91
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LC-20B8U-S LC-20B9U-S LC-20B9U-SM
851
878
R852
R1106
R8705
FB806
R850
C889
R8704
C1114
R1107
C867
C1115
C1116
IC805
IC1101
C1117
R1108
C891
R1101
C886
C1122
R1109
C1123
C1124
R1110
D801
R876
C1125
R831
R874
C887
C828
C825
C820
C818
C1727
C1126
C1127
R877
R873
C1704
R832
C1728
C832
C833
C834
C866
IC1202 C1230
C835
X801
R811
C1206
C1215
C1204
R1215
R809
R810
R843
C865
C836
R883
C837
C1216
C1220
C1217
C1218
C1219
C838
C1214
C874
C1213
C839
SC1201
C1212
C1211
C1221
R867 C842
C1209
C1222
R1210
R1213
C1210
R1206
C840
C841
C843
R1208
C1201
R1205
R1207
FB1201
C1205
C1208
C1224
FB1202
FB1203
C1223
LUG2001
C1714
SC401
LUG2004
L401
D407
D408
D401
D409
D402
D410
D403
C846
C847
C848
C849
C850
K1
C851
SC2001
C853
C855
IC801
C858
R830
C812
C811
C807
C806
C801
R829
C862
C872
IC806
C890
R872
C8709 R8701 R8725
R8715
SC2002
R8719
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LC-20B8U-S LC-20B9U-S LC-20B9U-SM
MAIN Unit (Chip Parts Side-B)
R407
R408
D404
D405
TL1261
R1714
C1715
C1725
TL2124
L1702
R1218
C1227
R1216
TL2125
C1726
TL1260
TL1259
C1225
C1226
TL1257
TL1258
R845
R1217
TL1251
R846
TL1256
TL1255
TL410
C1207
C1203
C1202
TL1254
TL1253
TL1250
TL1249
C1231
TL1252
R1211
R1209
R1204
R1203
R1202
R1201
TL1248
R847
R842
TL1247
R840
TL1245
TL1246
R868
TL1225
R839
TL1243
R1224
TL1244
R837
TL1242
TL1241
C1229
TL1240
TL1239
C876C875
TL1238
R1223
R838
TL1237
R855
TL1236
TL1234
TL1235
IC1201
TL1233
R1222
TL1232
TL1231
R835
TL1230
TL1229
TL1228
TL1227
TL1226
R1221
TL1223
TL1222
R836
TL1221
TL1220
TL1217
R1220
TL1216
R833
TL1224
TL1219
TL1215
TL1218
TL1214
TL1213
R1219
TL1212
TL1211
R841
R848
R882
R834
C1228
TL1210
C1232
R1746
Q1707
D1701
C821C814
C1707
R802
R801
TL1262
R1747
C822C815
TL802
C1705
R1701
C831
C1708
C823C816
C830
C829
Q1708
R1102
R895
FB805
IC1704
Q1102Q1101
C826
C824
R827
R1105
L802
C817
R896
R893
D1703
Q803
R824
C1706
R826
R823
R880
R803
C1109
C1132
FB804
R894
TL1209
D1710
TL1208
R881
R1104
R1103
Q802
TL1207
R897
IC1707
TL1206
C1108
TL801
TL1205
TL1204
TL803
FB803
C1121
TL1203
TL1202
C1120
C1103
TL1201
D1711
R871
R879
C870
R806
C868
C1119
C1104
R805
C1118
TL1102
R1750R807
C871
R1751
C1102
C1101
R1752
IC804
R898
Q1705
C1107
C1105
C1106
R804
C1113
C869
C1112
TL
1
Q1108
Q
C
TL
2
C8725
C8720
C8726
C8727
C8701
C8704
FB8703
TL2016
R2075
C8707
TL2015
R2107
TL2014
R8702
TL2012
R2022
TL2011
TL2009
TL2008
C860
TL2007
TL2006
C894
C893
Q806
R858
TL2004
R857
Q805
TL2003
C827R825R828
R878
TL2002
R821
C819R820R822
TL2001
R819
C892R818
C803
C813
C804
Q804
C802
C859
R817
C805
R815
FB809
C864
C863
R856
R813
C810
C809
C808
C857
R816
C856
TL2023
R814
TL2013
FB808
TL2010
TL2005
R812
TL2088
TL2087
R899
C854
R2089
R869
TL2086
TL2037
C852
R2086
TL2035
TL2036
TL2029
TL2032
C845
TL2027
C844
TL2028
TL2025
TL2026
R861
R860
TL2048
TL2049
TL2050
R403
R406
R405
TL2051
TL2024
R401
R402
R411
R404
C403
C405
R413
R412
C404
IC402
C401
TL403
TL402
TL401
TL404
R419
R418
R415
R414
R416
R417
TL2122
D406
TL409
C402
R410
TL408
TL407
TL406
TL405
TL2123
IC401
FB404
FB403
FB402
FB401
R409
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L1201
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R805
C1118
TL1102
R1750R807
C871
R1751
C1102
C1101
R1752
IC804
R898
Q1705
C1107
C1105
C1106
R804
C1113
C869
C1112
TL1101
Q1108
Q1106
C1131
R1119
C1111
R1114
R892
C1110
R1118
R1116
Q1107
Q1105
Q801
R844
R1115
C888C883
R891R890
R1117
C1130
L803
C882
D1103
R1111
C1129
R1113
Q1103
C884R875
C881
IC1706
Q1104
D1705
R1112
R887
C880
IC803
Q1701
R889
R1120
Q1702
R886
C879
C1720
FB8701
R1702
R1749
R1739
R1742
R1741
R1740
Q1710
R1704
R884
R888
C1702
R885
R1754
R1748
R1757
R1755
C1713
L1701
Q1709
Q1711
Q1712
R1756
R2069R2068
R1753
R2070
TL2076
R2071
TL2075
R2059
R2066
R2064
D1707
R2074
R1711
R1709
C1711
C2022
Q1704
TL2080
R1708
C1701
D1706
R2052
TL2085
R1713
IC2009
R1706
R1707
R1703
Q2005
TL2084
R2034
D1708
R1712
Q1703
R1710
TL2081
IC2006
R2024
C1719
R1760
R1744
IC1703
R2027
R1745
R1761
C1703
Q1715
C2015R2035
TL2077
R2009
C2010
R2093
R1759
C2003
R1762
Q1713
R1758
Q1717
R1763
Q1706
C1718
R1715
R1724
R1717
Q2019
Q1716
C1716
C1717
R2008
R2010
Q1714
R2018
R2043
R1729
R1723
R1721
D1709
R2039
R2012
R1722
Q2020
R2011
C2002
TL2072
R1719
R1718
C2030
TL2060
C2031R2108
IC2003
C2001
TL2047
TL2045
TL2044
TL2042
TL2040
TL2061
R2007
TL2058
D2007
R2092
C2029
C2028
C2027
C2026
R2091
R2085
R2084
R2006
D2002
TL2059
TL2057
TL2056
TL2046
TL2033
TL2043
TL2041
TL2039
TL2052
TL2054
C2023
C2024
C2025
TL2053
TL2055
R2017
TL2063
R2095
R2025
TL2074
TL2073
R2099
TL2062
TL2066
R2030
TL2064
R2031
TL2065
TL2068
TL2067
TL2071
TL2070
TL2069
TL2034
TL2031
TL2030
TL2038
R2015
R2063
R2061
C8702
C8732C8731
C8721
C8730
R8706
C8712
C8722
C8729
C8723
C8705
C8714
C8703
C8713
C8711
C8708
C8706
C8724
TL2022
C8737
C8738
TL2020
TL2018
C8725
C8720
C8726
C8727
C8701
C8704
FB8703
TL2016
R2075
C8707
TL2015
R2107
TL2014
R8702
TL2012
11
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SUB Unit (Chip Parts Side)
LUG3432
C3474
3
C3472
C3464
C3462
C3471
C3467
C3470
R3529
R3519 Q3419
R3530
R3532
C3410
L3405
R3411
C3409
R3483
R3447
C3427
L3402
Q3404 Q3406
C3429
R3453
C3428
R3452
R3418
R3404
R3477
R3470
R3451
C3434
C3430
R3454
C3431
C3439
R3455
R3433
C3480
IC3401
R3509
C3440
R3474 C3438
C3481
R3445
R3469
R3468
D3302
R3535
C3482
R3472
C3447
R3440
R3464
R3463
C3449
D3301
C3483
C3450
C3484
SC34
D3
2
R3524
D
3
C
C3421
R34
8
R3473
R3488
C3414
R3471
R3412
R3424
R3415
D3407
C3479
R3517
Q3416
Q3402
R3475
R3476
R3444
R3443
R3514
R3429
R3515
Q3403
Q3417
C3476
R3485
C3424
Q3401
J3403
C3420
Q3415
R3505
C3413
Q3414
R3401
R3462
R3467
R3423
R3406
R3487
C3469
R3504
D3404
R3407
C3465
D3403
R3441
R3437
C3432
Q3410
D3402
D3401
R3491
R3482
R3431
R3481
R3408
D3426
D3425
C3402
R3405
J3401
L3401
C3419
R3442
R3427
R3480
C3404
R3410
D3412
C3458
C3401
R3459
C3403
R3448
D3413
TU3401
LUG3431
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LC-20B8U-S LC-20B9U-S LC-20B9U-SM
R3468
D3302
R3535
C3482
R3472
C3447
R3440
R3464
R3463
C3449
D3301
C3483
C3450
C3484
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D3202
R3524
D3201
R3523
C3343
R3340
R3266
C3263
C3267
Q3205
R3251
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C3269
R3255
Q3206
R3258
R3252
R3346
R3259
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C3266
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R3260
C3270 C3265
C3264
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C3276
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R3339
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R3377
R3263
R3357
R3264
R3267
R3533
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C3301
C3366
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D3208
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C3251
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C3309
C3261
C3262
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C3245
C3243
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C3235
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C3228
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R3548
C3202
C3203
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C3207
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R3201
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C3208
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C3220
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R3211
R3209
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R3214
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R3416
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R3476
R3444
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R3514
R3429
R3515
Q3403
Q3417
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