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.
CONTENTS
SAFETY PRECAUTION
CHAPTER 1. SPECIFICATIONS
CHAPTER 2. OPERATION MANUAL
CHAPTER 3. DIMENSIONS
CHAPTER 4. REMOVING OF MAJOR PARTS
CHAPTER 5. ADJUSTMENT
CHAPTER 6. TROUBLE SHOOTING TABLE
CHAPTER 7. OVERALL WIRING/BLOCK DIAGRAM
CHAPTER 8. SCHEMATIC DIAGRAM
MODEL
LC-37D90U
CHAPTER 9. PRINTED WIRING BOARD ASSEMBLIES
Parts Guide
Parts marked with "" 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.
This document has been published to be used for
after sales service only.
The contents are subject to change without notice.
Service work should be performed only by qualified service technicians who are thoroughly familiar with all safety checks and the
servicing guidelines which follow:
WARNING
1. For continued safety, no modification of any circuit should be
attempted.
2. Disconnect AC power before servicing.
CAUTION: FOR CONTINUED
PROTECTION AGAINST A RISK OF
FIRE REPLACE ONLY WITH SAME
TYPE FUSE.
AV
F701 (125V 8A),
F4701, F5701 (250V 3A ~ 115
O
C)
• 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 0.75 Vrms (this corresponds to 0.5 mA rms AC.) or
more is excessive and indicates a potential shock hazard which
must be corrected before returning the monitor to the owner.
DVM
BEFORE RETURNING THE RECEIVER (Fire &
Shock Hazard)
Before returning the receiver to the user, perform the following
safety checks:
3. 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.
4. 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.
5. To be sure that no shock hazard exists, check for leakage current in
the following manner.
• Plug the AC cord directly into a 120 volt AC outlet.
• 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.
Many electrical and mechanical parts in LCD color 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 "" and shaded areas in the Replacement Parts List
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.
i
LC-37D90U
PRECAUTIONS A PRENDRE LORS DE LA REPARATION
Ne peut effectuer la réparation qu' un technicien spécialisé qui s'est parfaitement accoutumé à toute vérification de sécurité et aux
conseils suivants.
AVERTISSEMENT
6. N'entreprendre aucune modification de tout circuit. C'est dangereux.
7. Débrancher le récepteur avant toute réparation.
PRECAUTION:POURLA
PROTECTION CONTINUE
CONTRE LES RISQUES
D'INCENDIE, REMPLACER LE
FUSIBLE
AV
F701 (125V 8A),
F4701, F5701 (250V 3A ~ 115
O
C)
VERIFICATIONS CONTRE L'INCEN-DIE ET LE
CHOC ELECTRIQUE
Avant de rendre le récepteur à l'utilisateur, effectuer les vérifications suivantes.
8. 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.
9. 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 résistancecapacité, les isolateurs mécaniques, etc.
10.S'assurer qu'il n'y ait pas de danger d'électrocution en vérifiant la
fuite de courant, de la facon suivante:
• Brancher le cordon d'alimentation directem-ent à une prise de courant de 120V. (Ne pas utiliser de transformateur d'isolation pour cet
essai).
• A l'aide de deux fils à pinces, brancher une résistance de 1.5 kΩ 10
watts en parallèle avec un condensateur de 0.15µF en série avec
toutes les pièces métalliques exposées du coffret et une terre connue comme une conduite électrique ou une prise de terre branchée
à la terre.
• Utiliser un voltmètre CA d'une sensibilité d'au moins 5000Ω/V pour
mesurer la chute de tension en travers de la résistance.
• Toucher avec la sonde d'essai les pièces métalliques exposées qui
présentent une voie de retour au châssis (antenne, coffret métallique, tête des vis, arbres de commande et des boutons, écusson,
etc.) et mesurer la chute de tension CA en-travers de la résistance.
Toutes les vérifications doivent être refaites après avoir inversé la
fiche du cordon d'alimentation. (Si nécessaire, une prise d'adpatation non polarisée peut être utilisée dans le but de terminer ces
vérifications.)
La tension de pointe mesurèe ne doit pas dépasser 0.75V (correspondante au courant CA de pointe de 0.5mA).
Dans le cas contraire, il y a une possibilité de choc électrique qui
doit être supprimée avant de réndre le recepteur au client.
De nombreuses pièces, électriques et mécaniques, dans les téléviseur
ACL 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 identifiées par la marque "" 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.
ii
LC-37D90U
PRECAUTIONS FOR USING LEAD-FREE SOLDER
Employing lead-free solder
• "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:
Indicates lead-free solder of tin, silver and copper.Indicates lead-free solder of tin, silver and copper.
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.
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.
Remote control unit ( 1), AC cord ( 1), "AAA" size battery ( 2), Cable clamp ( 1),
Cable tie ( 1), Operation manual ( 1)
32°F to104°F (0°C to40°C)
* Emergency alert messages via Cable are unreceivable.
• As part of policy of continuous improvement, SHARP reserves the right to make design and specification changes for product
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.
1 – 1
LC-37D90U
CHAPTER 2. OPERATION MANUAL
[1] OPERATION MANUAL
HDMI terminal(INPUT3)
HDMI terminal(INPUT4)
i.LINK terminals
LC-37D90U
Service Manual
AC INPUT terminal
AIR IN terminal
CABLE IN terminal
RS-232C terminal
Part names
INPUT button
POWER button
(INPUT5)
DVI terminal
OUTPUT
DIGITAL AUDIO
terminal
terminal
DVI AUDIO
INPUT1 terminals
terminals
(INPUT5)
(INPUT4)
AUDIO input
INPUT2
terminals
terminals
AUDIO OUTPUT
OPC indicator*
TV (Front)TV (Rear)
Part names
Channel buttons
(CH /)
+
-
VOL /)
Volume buttons (
2 – 1
Remote control sensor
OPC sensor*
POWER
indicator**
LC-37D90U
0° or 5°
Detach the stand from the TV.
(Hold the stand so it will not drop from
Unfasten the four screws used to
the edge of the base area.)
secure the stand in place.
About setting the TV angle
Angular mounting
3
CAUTION
Appendix
Before detaching (or attaching) stand, unplug the AC cord from the AC INPUT terminal.
standby mode.
1 TV POWER: Switches the TV power on or enters
2 DISPLAY: Displaysthe channel information.
• Do not remove the stand from the TV unless using an optional wall mount bracket to mount it.
3 SOURCE POWER: Turns the power of the external
Before attaching/detaching stand
equipment on and off.
damaged.
• Before performing work make sure to turn off the TV.
• Before performing work spread cushioning over the base area to lay the TV on. This will prevent it from being
When the unit is used in a low temperature space (e.g. room, office), the picture may leave trails or appear slightly delayed.
This is not a malfunction, and the unit will recover when the temperature returns to normal.•Do not leave the unit in a hot or cold location. Also, do not leave the unit in a location exposed to direct sunlight or near a
heater, as this may cause the cabinet to deform and the Liquid Crystal panel to malfunction.
Cautions regarding use in high and low temperature environments
Storage temperature: 4°F to 140°F ( 20°C to 60°C)
•
LC-37D90U
CONTROL CONTENTS
Effective only when the StandbyMode is set to "Mode1".
It input-switches by the toggle.(It is the same as an input change key)
It input-switches to TV. (Achannel remains as it is. (Last memory))
It input-switches to INPUT1~INPUT5.
It input-switches to i.LINK.
An input change is alsoincluded.
Although it can choose now,it is toggle operation in inside.
Only available when DVI ANALOGis being input.
Only available when DVI ANALOGis being input.
Although it can choose now,it is toggle operation in inside.
An input change is includedif it is not TV display.
In Air, 2–69ch is effective.
In Cable, 1–135ch is effective.
If it is not TVdisplay, it will input-switch to TV. (same function as CH )
If it is not TVdisplay, it will input-switch to TV. (same function as CH )
DIGITAL Cable (One-Part numbers, 5-digit,more than 10,000)
Toggle operation of a closedcaption.
AIR CABLE AIR(Toggle)ACSL 0_ __
_
+
DIGITAL Air (Two-Part numbers, 2-digitplus 2-digit)(0101-9999)
DIGITAL Cable (Two-Part numbers, 3-digitplus 3-digit)
DIGITAL Cable (Two-Part numbers, 3-digitplus 3-digit)
Front half of DIGITAL CABLECHANNEL NO. (Designate major channel)
Rear half of DIGITAL CABLECHANNEL NO. (Designate minor channel)
DIGITAL Cable (One-Part numbers, 5-digit,less than 10,000)
Appendix
Response code format
OK
Normal response
Return code (0DH)
ERR
Problem response (communication error or incorrect command)
Return code (0DH)
(Toggle)
Input terminal number (1–5)
Power Off
Power On1___
___
_
_______________
_______________
*
x
x
0
PARAMETER
ITGD
ITVD
IAVD
POWR
TV
INPUT1-5
CONTROL ITEMCOMMAND
INPUT SELECTION A TOGGLE
POWER SETTINGIt shifts to standby.
Command table
• Commands not indicated here are not guaranteed to operate.
AUTO
VIDEO
COMPONENT
DIGITAL
ANALOG
(Toggle)
STANDARD
INP5
INPUT 5
MOVIE
12345
0
AVMD
AVMODE SELECTION
AUTO
___________
05612
INP1
LINKx___
i.LINK
INPUT 1
INPUT SELECTION B
GAME
USER
DYNAMIC (Fixed)
DYNAMIC
_
_
_
6
Volume(0–60)
AVmode. ( 10)
PC mode. (0–180)
PC
_____
_
_
*****
*
_
*****
*
___
*
*****
7
VOLM
HPOS
H-POSITIONH-POSITION
VOLUME
POSITION
AVmode. ( 20)
PC mode. (0–100)
Only PC mode. (0–180)
*
*
S
VPO
CLCK
V-POSITION
CLOCK
Only PC mode. (0–40)
(Toggle) [AV]
Side Bar [AV]
S.Stretch [AV]
Zoom [AV]
Stretch [AV]
_________
_________
_________
012345678
E
PHS
WIDE
PHASE
VIEWMODE
Normal [PC]
Zoom [PC]
(Toggle)
Stretch [PC]
Dot by Dot [AV] [PC]
On
Off
OFF
OFF TIMER – 30 MIN.
Full Screen [AV]9___
(Toggle)OnOff
___
___
___
1
MUT E0
The channel number of TV
(Toggle)
_
_
_
_
_
_
_
0
2
Ax___
U
ACS
ACH
(1–135)
OFF TIMER – 60 MIN.
OFF TIMER – 90 MIN.
OFF TIMER – 120 MIN.4___
_
_
_
_
_
*
___
_
_
*
___
_
_
*
112
2
3
0
M
OFT
H
DCC
DIRECT
(ANALOG)
CHANNEL
P** **
DA2
DIRECT
(0-999)
U** *_
DC2
(DIGITAL)
CHANNEL
The channel number of TV 1
The channel number of TV 1
(0-6383)
_
_
_
x
1****
DC1
CHUPCHDW
CH UP
_
_
_
x
CH DOWN
(Toggle)
AIR1___
CABLE2___
_
_
_
x
CLCP
(0-999)
(0-9999)
L***_
DC2
DC1 0 * * * *
X
NOTE
Surround
SLEEP TIMER
MUTE
AUDIO SELECTION
CHANNEL
Air/Cable SELECT
CC
• If an underbar (_) appears in the parameter column, enter a space.
• If an asterisk (*) appears, enter a value in the range indicated in brackets under CONTROL CONTENTS.
• As long as that from which the parameter ( ) in the table is a numerical value, it may write anything.
RS-232C port specifications
PC Control of the TV
Appendix
• When a program is set, the TV can be controlled from the PC using the RS-232C terminal. The input signal
(PC/AV) can be selected, the volume can be adjusted and various other adjustments and settings can be made,
enabling automatic programmed playing.
NOTE
connections.
• Attach an RS-232C cable cross-type (commercially available) to the supplied Din/D-Sub RS-232C for the
• This operation system should be used by a person who is accustomed to using computers.
Communication conditions
Set the RS-232C communication settings on the PC to match the TV's communication conditions.
The TV's communication settings are as follows:
9,600 bps
Baud rate:
8bits
Data length:
None
Parity bit:
1bit
Stop bit:
None
Flow control:
Communication procedure
Send the control commands from the PC via the RS-232C connector.
The TV operates according to the received command and sends a response message to the PC.
2 – 4
Do not send multiple commands at the same time. Wait until the PC receives the OK response before sending the
next command.
+
Eight ASCII codes CR
Command format
Command 4-digits: Command. The text of four characters.
Parameter 4-digits: Parameter 0 – 9, x, blank, ?
C1 C2 C3 C4 P1 P2 P3 P4
Command 4-digitsParameter 4-digits Return code
Input the parameter values, aligning left, and fill with blank(s) for the remainder. (Be sure that 4 values are input for
the parameter.)
When the input parameter is not within an adjustable range, "ERR" returns. (Refer to "Response code format".)
Parameter
0
Any numerical value can replace the "x" on the table.
30
0055
100
0009
_
?
When "?" is input for some commands, the present setting value responds.
????
LC-37D90U
Setup
Picture
Picture
Menu items for TV/INPUT 1/INPUT 2Menu items for HDMI/DVI
Basic adjustment settings
OPC
Backlight
OPC
Backlight
Contrast
Brightness
Color
Contrast
Brightness
Color
Tint
Sharpness
Advanced
Tint
Sharpness
Advanced
Color Temp.
Black
Monochrome
Color Temp.
Black
3D-Y/C
Audio
Film Mode
Range of OPC
Monochrome
Film Mode
Range of OPC
Audio
Treble
Bass
Treble
Balance
Surround
Bass
Balance
Power Control
Surround
Setup
Input Skip
Input Signal
Auto Sync.
Input Label
Fine Sync.
Position
Picture Flip
No Signal Off
No Operation Off
Power Control
EZ Setup
No Signal Off
No Operation Off
CH Setup
Standby Mode
Antenna Setup-DIGITAL
Input Skip
Input Label
Parental CTRL
Position
Language
Reset
Picture Flip
Standby Mode
Language
Reset
Option
Option
Audio Only
Digital Noise Reduction
Input Select
Audio Only
HDMI Setup
Output Select
Quick Shoot
Digital Noise Reduction
Input Select
Output Select
Quick Shoot
Digital Setup
Color System
Caption Setup
Program Title Display
Favorite CH
i.LINK Setup
Digital Setup
Audio Setup
i.LINK Setup
2 – 5
LC-37D90U
LC-37D90U
CHAPTER 3. DIMENSIONS
[1] DIMENSIONS
3225/64(
27
26
36
822.6)
/64(671)
5
/8(
930)
Service Manual
Unit: inch/(mm)
4
(
104)
13
3
32
/
4
(
122)
16
/
729)
(
64
/
45
28
200)
(
8
/
7
7
664)
(
64
/
9
26
63)
(
64
/
31
2
100)
(
64
/
61
3
585)
(
32
/
1
23
77/8(
200)
463.8)
(
64
/
17
18
439)
(
32
/
9
17
12
1
/16(
306)
3 – 1
LC-37D90U
CHAPTER 4. REMOVING OF MAJOR PARTS
Service Manual
[1] REMOVING OF MAJOR PARTS
1. Detach the SD Card Cover.
2. Remove the 2 lock screws and detach the Stand Cover.
3. Remove the 4 lock screws and detach the Stand.
4. Remove the SP Wire (L)(R). Remove the 4 lock screws and detach the Speaker Box.
5. Remove the 13 lock screws, 6 lock screws, 4 lock screws and detach the Rear Cabinet.
Front Cabinet
5
1
SD Card Cover
LC-37D90U
5
SP Wire (R)
4
5
Rear Cabinet
3
SP Wire (L)
2
Stand Cover
Stand
4
Speaker Box
4 – 1
LC-37D90U
6. Remove the Stand Bottom Cover.
7. Disconnect the [FB] connector. Remove the 2 lock screws and detach the Fan Angle C Ass’y.
8. Remove the 4 lock screws and detach the SUS Angle (L)(R).
9. Remove the 5 lock screws and detach the Stand Fixing Angle.
10.Remove the 6 lock screws and detach the Main Shield.
10
Main Shield
SUS Angle (R)
8
7
SUS Angle (L)
Fan Angle C Ass'y
8
11.Disconnect all the connectors from all the PWBs.
Stand Fixing Angle
Stand Bottom Cover
9
4 – 2
12.Remove the 3 lock screws and detach the Fan Angle L Ass’y.
13.Remove the 2 lock screws and detach the SP (L) PWB.
14.Remove the 3 lock screws and detach the SP Fixing Angle (L).
15.Remove the 2 lock screws and detach the SP (R) PWB.
16.Remove the 3 lock screws and detach the SP Fixing Angle (R).
17.Remove the 2 lock screws and detach the R/C, LED PWB.
18.Remove the 2 lock screws and detach the Top Control Cover.
19.Remove the 3 lock screws and detach the KEY PWB.
20.Remove the 4 lock screws and detach the Try Chassis.
18
Top Control Cover
KEY PWB
19
LC-37D90U
20
Try Chassis
12
Fan Angle L Ass'y
17
R/C, LED PWB
SP Fixing Angle (R)
16
SP (R) PWB
15
16
14
SP (L) PWB
SP Fixing Angle (L)
14
13
4 – 3
LC-37D90U
21.Remove the 9 lock screws and detach the Jack Angle Long.
22.Remove the 6 lock screws and detach the POWER PWB.
23.Remove the 6 lock screws and detach the IF PWB.
24.Remove the 5 lock screws and detach the MAIN PWB Radiator and MAIN PWB.
24
MAIN PWB Radiator
MAIN PWB
21
21
22
POWER PWB
21
Jack Angle Long
23
IF PWB
25.Remove the 2 lock screws from the Panel Fixing Angle (C), the 2 lock screws from the Panel Fixing Angle (L)(R) and detach the LCD Panel Ass'y.
26.Remove the 3 lock screws and detach the Panel Fixing Angle (C).
27.Remove the 4 lock screws and detach the Panel Fixing Angle (L)(R).
Panel Fixing Angle (C)
27
Panel Fixing
Angle (R)
25
25
26
27
25
Panel Fixing
Angle (L)
4 – 4
LC-37D90U
LC-37D90U
CHAPTER 5. ADJUSTMENT
Service Manual
[1] ADJUSTMENT PROCEDURE
The adjustment values are set to the optimum conditions at the factory before shipping. If a value should become improper or an adjustment is
required due to part replacement, make an adjustment according to the following procedure.
1. After replacement of any PWB unit and/or IC for repair, please note the following.
When replacing the following units, make sure to prepare the new units loaded with updated software.
MAIN Unit: DKEYDD743FM21
2. Upgrading of each microprocessor software
CAUTION: Never “POWER OFF” the unit when software upgrade is ongoing.
Otherwise the system may be damaged beyond recovery.
2.1. Software version upgrade
The model employs the following software.
•Main software
• Monitor microprocessor software
The main software and the monitor microprocessor software can be upgraded by using a general-purpose SD memory card.
The followings are the procedures for upgrading, explained separately for each of the main software, the monitor microprocessor software.
2.2. Main software version upgrade
2.2.1 Get ready before you start
• SD memory card of 32MB or higher capacity
• PC running on Windows 98/98SE/ME/2000/XP operating system
• SD memory card reader/writer with USB connectivity
• SD memory card formatting software
(Downloadable at http://panasonic.jp/support/audio/sd/download/sd_formatter_e.html)
2.2.2 Preparations
To upgrade the main software, it is necessary to get ready the SD card for version upgrade before you start. Follow the steps below and create the SD
card for version upgrade.
1. Insert the SD card into the SD card reader/writer. Start the SD card formatting software. Click [Format]. (When you have the drive options, select
the drive where the SD card is inserted before you proceed.)
5 – 1
LC-37D90U
2. When the formatting is over, the following window appears. Click [OK].
3. Click [Exit] to finish the formatting.
NOTE: When you are done, take out the SD card once to make sure it is finished, and then insert it again.
4. Copy the binary image file OLYMAxxx.SDC (named temporarily) for version upgrade to the root directory (folder) of the SD card drive.
NOTE: In the SD card drive, do not store other folders or unrelated files, or more than one binary image files for version upgrade.
Now the SD card for version upgrade is ready.
2.2.3 Upgrading the software
1. Turn off the AC power (Unplug the AC power cord).
2. Insert the upgrading SD card (prepared as instructed above) into the service slot.
NOTE: Be careful not to insert the SD card in the wrong way. Otherwise the card may come into the set and fail to come out.
3. Turn on the AC power (Plug in the AC power cord).
4. A couple to dozen seconds after the set starts, the upgrade screen below shows up.
5 – 2
LC-37D90U
5. If any of the procedures fails, the following upgrade failure screen shows up. For the failing procedure, the “NG” marking turns red.
NOTE: In such case, try to upgrade the software again. If it still fails, the hardware may be in trouble.
6. When all the procedures are complete, the following upgrade success screen shows up. The new software version can be confirmed on screen.
The version number appears when each item has been successfully upgraded. Finally the main version number appears on screen.
7. Turn off the AC power (Unplug the AC power cord). Take out the upgrading SD card.
8. Now the software has been upgraded.
NOTE: Then get the set started and call the process adjustment screen 1/27 to check the main software version.
CAUTION: 1) Do not take out and put in the SD memory card during formatting.
2) With the SD formatted, all the data stored on the medium will be deleted.
3) Do not start the SD formatting with the memory card’s WRITE PROTECT switch still on.
4) If the SD memory card format software does not recognize the SD memory card, take out and put in the SD memory card again, and
click the “UPDATE” button.
5) After checking the performance, use the set under its interface environment.
6) The SD formatting is impossible on drives that are not recognized “REMOVABLE”.
2.3. Upgrading the monitor microprocessor software
2.3.1 Kit
Have the above “Upgrading the main software” kit or equivalent at hand.
2.3.2 Preparations
As discussed in “Upgrading the main software” earlier, create the SD card for upgrading the monitor microprocessor software. For this SD card, use
the monitor microprocessor upgrading binary image file.
2.3.3 Upgrading procedure
To follow the monitor microprocessor software upgrading, the monitor screen upgrade progress indicator and the flashing power LED indicator can be
used.
1. Turn off the AC power (Unplug the AC power cord).
2. Insert the upgrading SD card (prepared as instructed above) into the service slot at the back of the set. Insert the SD card with its logo-printed face
upward (visible). Be careful not to insert the SD card in the wrong way. Otherwise the card may come into the set and fail to come out.
3. Turn on the AC power (Plug in the AC power cord).
CAUTION: Now the monitor microprocessor software starts getting upgraded. Be very careful not to turn off the power while the software is being
upgraded. Otherwise the software will fail to upgrade itself and the set will fail to get started.
5 – 3
LC-37D90U
4. A couple to dozen seconds after the set starts, the upgrade screen below shows up. The upgrade progress is indicated on screen. The power LED
indicator goes out once and then starts flashing in blue. (It takes 2-3 minutes to get the monitor microprocessor software upgraded.)
5. If the procedure fails, the following upgrade failure screen shows up and the “NG” marking turns red. The power LED indicator fails to start flashing
in blue. Even if the usual screen reappears in several seconds, do the procedure from Step “1” again.
NOTE: In case of failure, try to upgrade the software again. If it still fails, the hardware may be in trouble.
6. When the procedure is complete, the following upgrade success screen shows up. The new software version can be confirmed on screen. The
upgrade success can also be confirmed when the power LED indicator and the OPC LED indicator start flashing alternately in blue and green,
respectively. Double-check the upgrading and turn off the AC power (Unplug the AC power cord). Take out the upgrading SD card. Now the software has been upgraded.
Finally get the set started and call the process adjustment screen 1/27 to check the monitor microprocessor software version.
5 – 4
LC-37D90U
3. Entering and exiting the adjustment process mode
1) Before entering the adjustment process mode, the AV position RESET in the video adjustment menu.
2) While holding down the “VOL (–)” and "INPUT" keys at a time, plug in the AC cord of the main unit to turn on the power.
The letter “<K>” appears on the screen.
3) Next, hold down the “VOL (–)” and “CH ()” keys at a time.
(The "VOL (–)" and "CH ()" keys should be pressed and held until the display appears.)
Multiple lines of blue characters appearing on the display indicate that the unit is now in the adjustment process mode.
When you fail to enter the adjustment process mode (the display is the same as normal startup), retry the procedure.
4) To exit the adjustment process mode after the adjustment is done, unplug the AC cord from the outlet to make a forced shutdown. (When the
power was turned off with the remote controller, once unplug the AC cord and plug it again. In this case, wait 10 seconds or so before plugging.)
CAUTION: Use due care in handling the information described here lest your users should know how to enter the adjustment process mode. If the
4. Remote controller key operation and description of display in adjustment process mode
1) Key operation
Remote controller keyMain unit keyFunction
CH (/)CH (/)
VOL (+/–)VOL (+/–)Changing a selected item setting (+1/ –1)
Cursor (UP/DOWN)—————Turing a page (PREVIOUS/NEXT)
Cursor (LEFT/RIGHT)—————Changing a selected line setting (+10/ –10)
INPUT—————Input switching (toggle switching)
ENTER—————Executing a function
2) Description of display
settings are tampered in this mode, unrecoverable system damage may result.
Moving an item (line) by one (UP/DOWN)
(TUNER→INPUT1→INPUT2→INPUT3→INPUT4→INPUT5)
*Input mode is switched automatically when relevant adjustment is started so far as the necessary input signal is available.
(1) Current page/(5)(6) LCD Panel size/Speaker type
Total pages
1/27[INFO]INPUT5AUTOUSA37_UNDER
MAIN Version0.95 ( U 2006/02/02 1)
BOOT VersionOLYM0.92
Monitor Version0.88
EQ DATA CHECKSUMROM(8) Parameters
TEMPAERATURE7B
LAMP ERROR0
NORMAL STANDBY CAUSE
ERROR STANDBY CAUSE1) 02) 03) 0
(2) Current page title
(3) Current selected input
(4) Current color system
0
00H 00M00H 00M00H 00M
4) 05) 0
00H 00M00H 00M
Destination
(7) Adjustment
process menu
header
5 – 5
LC-37D90U
5. List of adjustment process mode menu
The character string in brackets [ ] will appear as a page title in the adjustment process menu header.
1MAIN VersionMain software version
2BOOT Version
3Monitor VersionMonitor software version
4EQ DATA CHECKSUMAudio data checksum
5TEMPERATURECPU temperature
6LAMP ERRORNumber of termination due to lamp error
7NORMAL STANDBY CAUSERefer to *1 under the list for details
8ERROR STANDBY CAUSERefer to *2 under the list for details
2[INIT]
1INDUSTRY INIT (Cause)
2INDUSTRY INITInitialization to factory settings.
3HOTELMODEHotel mode
4Center AcutimeAccumulated main operation time
5RESETReset
6BacklightAcutimeAccumulated monitor operation time
7RESETReset
8LAMP ERROR RESETReset LAMP ERROR
9VIC XPOSX-coordinate setting for VIC READ
10VIC YPOSY-coordinate setting for VIC READ
11VIC COLORCollected color data setting for VIC READ
12VIC SIGNAL TYPESignal type setting for VIC READ
13VIC READPicture level acquisition functionLevel appears in green on the upper right.
3[N358MAIN]
1N358 ALL ADJCVBS and TUNER signal level adjustment
2N358 MAIN ADJCVBS signal level adjustment
3TUNER DAC ADJTUNER signal level adjustment
4N358 MAIN CONTRASTCVBS and TUNER contrast adjustment values
5TUNER A DACTUNER adjustment value
4[TUNER TEST]
1TUNER VCHIP TEST(69ch)Tuning test and VCHIP test (69 ch)
2TUNER VCHIP TEST(7ch)Tuning test and VCHIP test (7 ch)
3TUNER VCHIP TEST(10ch)Tuning test and VCHIP test (10 ch)
4TUNER VCHIP TEST(15ch)Tuning test and VCHIP test (15 ch)
5[COMP15KMAIN]
1COMP15K MAIN ADJComponent 15K picture level adjustment (main)
6No operation offin the cause of “no operation off”
7No signal offin the cause of “no signal off”
8PC power management mode 1in the cause of “Standby mode MODE1”
9PC power management mode 2in the cause of “Standby mode MODE2”
AOff timerin the cause of “SLEEP timer”
CCommand from RS232Cin the cause of command by RS-232C
*2 Details of P1.8(ERROR STANDBY CAUSE)
5Prolonged unspecified-signal input in PC mode in the cause of continuous “out of range”, PC input mode
13 Temperature errorin the cause of abnormal temperature
16 Monitor trouble detectedin the cause of abnormal monitor mode
17 Fan lockin the cause of fan lock
6. Special features
* STANDBY CAUSE (Page 1/27)
Display of a cause (code) of the last standby
The cause of the last standby is recorded in EEPROM whenever possible.
Checking this code will be useful in finding a problem when you repair the troubled set.
* EEP SAVE (Page 27/27)
Storage of EEP adjustment value
* EEP RECOVER (Page 27/27)
Retrieval of EEP adjustment value from storage area
7. Video signal adjustment procedure
*Adjustment process mode menu is listed in section 5.
7.1. Signal check
Signal generator level adjustment check (Adjustment to the specified level)
•Composite signal: 0.714Vp-p ± 0.02Vp-p (Pedestal to white level)
•15K component signal: Y level: 0.714Vp-p ± 0.02Vp-p (Pedestal to white level)PB, PR level: 0.7Vp-p ± 0.02Vp-p
•33K component signal: Y level: 0.7Vp-p ± 0.02Vp-p (Pedestal to white level)PB, PR level:0.7Vp-p ± 0.02Vp-p
•DVI-I (analog RGB) signal: RGB level: 0.7Vp-p ± 0.02Vp-p (Pedestal to white level)
7.2. Entering the adjustment process mode
Enter the adjustment process mode according to the steps described in section 3.
1Adjustment1) Apply the following settings to the set.
2Auto adjustment
performance
Page 7/27Bring the cursor on [•DVI ANALOG] and press [ENTER].
[•DVI ANALOG ADJ FINISH] appears when finished.
AV MODE: [DYNAMIC]
Aging Time: 60 Min.
Backlight: +16
2) Connect a white balance jig and the set.
Optical measuring machine: [Minolta CA-210]
PC
RS-232C communication cable
3) Use an RS-232C command to display the screen for multipoint adjustment.
•Multipoint adjustment mode (MSET0001)
•Adjustment value initialization (MSET0004)
•Standard value 6 (LEV60232)
•Standard value 5 (LEV50200)
•Standard value 4 (LEV40164)
•Standard value 3 (LEV30132)
•Standard value 2 (LEV20088)
•Standard value 1 (LEV10048)
•Write setting (MSET0003)
[Adjustment]
1) Enter the monitor adjustment process mode.
2) Set the specified gradation for standard value 6. Set the strongest
color as the fixed color and adjust RGB by reducing to the standard
value.
3) Set the specified gradation for standard value 5. Set the correction
value of G [(default of standard value 5) x (G of standard value 6) /
(default of standard value 6)] and adjust RB to the standard value.
4) Set the specified gradation for standard value 4. Set the correction
value of G [(default of standard value 4) x (G of standard value 6) /
(default of standard value 6)] and adjust RB to the standard value.
5) Set the specified gradation for standard value 3. Set the correction
value of G [(default of standard value 3) x (G of standard value 6) /
(default of standard value 6)] and adjust RB to the standard value.
6) Set the specified gradation for standard value 2. Set the correction
value of G [(default of standard value 2) x (G of standard value 6) /
(default of standard value 6)] and adjust RB to the standard value.
7) Set the specified gradation for standard value 1. Set the correction
value of G [(default of standard value 1) x (G of standard value 6) /
(default of standard value 6)] and adjust RB to the standard value.
8) Write the adjustment values with MSET0003 command and turn off
AC power.
[Adjustment values]
Optical measuring machine: [Minolta CA-210] (Focus on the center of the screen.)
LevelStandard valueAdjustment value Tolerance
Standard value 6232x = 0.272±0.001±0.0020
y = 0.272±0.001±0.0020
Standard value 5200x = 0.272±0.001±0.0020
y = 0.272±0.001±0.0020
Standard value 4164x = 0.272±0.001±0.0020
y = 0.272±0.001±0.0020
Standard value 3132x = 0.272±0.001±0.0020
y = 0.272±0.001±0.0020
Standard value 288x = 0.272±0.002±0.004
y = 0.272±0.002±0.004
Standard value 148x = 0.272±0.002±0.004
y = 0.272±0.002±0.004
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LC-37D90U
LevelStandard valueAdjustment value Tolerance
NoteSet the following before adjustment.
AV MODE: [DYNAMIC]
Monochrome: ON
Aging Time: 60 Min.
8.2. Adjusting procedure by use of [RS-232C]
1. Get ready the PC with COM port (RS-232C) running on Windows 95/98/ME/2000/XP operating system, as well as the RS-232C cross cable.
2. Start the unit with the RS-232C cable connected.
3. Start the terminal software. (The freeware readily available on the Internet will do.)
4. Make the following settings.
Baud rate9,600 bps
Data LENGTH8 bit
Parity bitNone
Stop bit1 bit
Flow controlNone
5. If the settings are correct, the terminal software indicates “ERR” against pressing of the “ENTER” key.
6. After the settings are done correctly, it is possible to make an adjustment by typing in the command shown in the table below and pressing the
“ENTER” key on the keyboard.
7. Command entry is successful if the terminal software indicates “OK” when the “ENTER” is pressed. If “ERR” is shown, retry to enter the command.
8. Send the process mode switching command to switch from the RS232C operation mode to the process mode.
KRSW0001: “ERR” is returned.
KKT10037: When “OK” is returned, the process mode becomes active. When “ERR”, start over from KRSW0001.
9. Send each adjustment command.
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8.3. White balance adjustment sequence
Adjustment is available in any input or position. There is no specific order to adjust high and low, either.
Repeat until values are
properly
adjusted.
PC
Activate process command (STEP1).
KRSW0001
Command is accepted.
ERR
Activate process command (STEP2).
KKT10037
Process command is
activated.
OK
Remote control
disable command
KYOF0000
Setting is complete.
OK
Inhibit command for the OSD display
OSDS0001
Setting is complete.
OK
Set the light level to +12 using dimmer control command.
SBSL0016
Setting is complete.
OK
Set the multipoint adjustment mode.
MSET0001
The mode is set.
OK
Initialize adjustment values.
MSET0004
Initialization is done.
OK
Adjustment gradation setting (Standard value 6 = 236 gradation)
LEV60232
Adjustment value is set.
Adjust RGB to the target xy values.
MG6GXXXX
MG6BXXXX
MG6RXXXX
In order to adjust by reducing the value, set the strongest color as the fixed color.
* Default adjustment value of RGB is the parameter value of LEV6 command
multiplied by 4.
Adjustment gradation setting (Standard value 5 = 200 gradation)
LEV50200
Correct G value.
MG5GXXXX
When G is changed at adjustment gradation setting (standard value 6 = 236 gradation), calculate the ratio of the
change and set the following value to XXXX: (the value set with LEV5) x 4 x (the ratio).
OK
Adjustment values are set.
OK
Adjustment value is set.
OK
Adjustment value is set.
OK
Pattern display
Reflecting adjustment
values to images
Pattern display
Set
5 – 14
Repeat until values are
properly adjusted.
Start of measurement
Adjust RB to the target xy values.
MG5RXXXX
MG5BXXXX
* XXXX indicates adjustment values between 0000 - 1023 (4 digit decimal number with zero fill).
* G is fixed.
* Default adjustment value of RGB is the parameter value of LEV5 command multiplied by 4.
Adjustment values are set.
Adjustment gradation setting (Standard value 4 = 144 gradation)
LEV40164
OK
Reflecting adjustment values to
images
LC-37D90U
Repeat until values are
properly adjusted.
Repeat until values are
properly adjusted.
Adjustment value is set.
Correct G value.
MG4GXXXX
When G is changed at adjustment gradation setting (standard value 6 = 236 gradation), calculate
the ratio of the change and set the following value to XXXX: (the value set with LEV4) x 4 x (the ratio).
Start of measurement
Adjust RB to the target xy values.
MG4RXXXX
MG4BXXXX
* XXXX indicates adjustment values between 0000 - 1023 (4 digit decimal number with zero fill).
* G is fixed.
* Default adjustment value of RGB is the parameter value of LEV4 command multiplied by 4.
Adjustment gradation setting (Standard value 3 = 116 gradation)
LEV30132
Correct G value.
MG3GXXXX
When G is changed at adjustment gradation setting (standard value 6 = 236 gradation), calculate
the ratio of the change and set the following value to XXXX: (the value set with LEV3) x 4 x (the ratio).
Start of measurement
Adjust RB to the target xy values.
MG3RXXXX
MG3BXXXX
* XXXX indicates adjustment values between 0000 - 1023 (4 digit decimal number with zero fill).
* G is fixed.
* Default adjustment value of RGB is the parameter value of LEV3 command multiplied by 4.
OK
Adjustment value is set.
OK
Reflecting adjustment values to
Adjustment values are set.
OK
Adjustment value is set.
OK
Adjustment value is set.
OK
Pattern display
images
Pattern display
Reflecting adjustment values to
Adjustment values are set.
OK
Adjustment gradation setting (Standard value 2 = 66 gradation)
LEV20088
Adjustment value is set.
Correct G value
MG2GXXXX
When G is changed at adjustment gradation setting (standard value 6 = 236 gradation), calculate
the ratio of the change and set the following value to XXXX: (the value set with LEV2) x 4 x (the ratio).
OK
Adjustment value is set.
OK
Pattern display
5 – 15
images
LC-37D90U
Repeat until values are
properly adjusted.
Repeat until values are
properly adjusted.
Start of measurement
Adjust RB to the target xy values.
MG2RXXXX
MG2BXXXX
* XXXX indicates adjustment values between 0000 - 1023 (4 digit decimal number with zero fill).
* G is fixed.
* Default adjustment value of RGB is the parameter value of LEV2 command multiplied by 4.
Reflecting adjustment values to
Adjustment values are set.
OK
Adjustment gradation setting (Standard value 1 = 50 gradation)
LEV10048
Adjustment value is set.
OK
Correct G value.
MG1GXXXX
When G is changed at adjustment gradation setting (standard value 6 = 236 gradation), calculate
the ratio of the change and set the following value to XXXX: (the value set with LEV1) x 4 x (the ratio).
Adjustment value is set.
OK
Start of measurement
Adjust RB to the target xy values.
MG1RXXXX
MG1BXXXX
* XXXX indicates adjustment values between 0000 - 1023 (4 digit decimal number with zero fill).
* G is fixed.
* Default adjustment value of RGB is the parameter value of LEV1 command multiplied by 4.
Reflecting adjustment values to
Adjustment values are set.
OK
Save adjustment values.
MSET0003
Adjustment values are saved.
OK
Completion of adjustment
Turn off AC power
images
Pattern display
images
9. Initialization to factory settings
CAUTION: When initialization is performed, all user setting data including the channel settings are initialized. Be cautious when making this adjust-
ment.
(The adjustments done in the adjustment process mode are not initialized.)
After the adjustment, cancel the adjustment process mode.
To exit the adjustment process mode, unplug the AC power cable from the outlet to make a
forced shutdown. (When the power was turned off with the remote controller, once unplug the
power cable and plug it again. In this case, wait 10 seconds or so before plugging.)
Enter the adjustment process mode.
Bring the cursor on to [INDUSTRY INIT] in page 2/27.
Set to [ON] using [VOL] key, and press [ENTER] to execute the initialization.
When the version number screen shows up on the green background and “SUCCESS”
gets displayed at the top on screen, it means the procedure has been successfully carried out.
(If an error occurs, “ERROR” is displayed on the red background.)
•Turn off the AC power.
*Never shut off the power during the initialization process.
The following settings are initialized in this adjustment.
1) User setting
2) Channel data (e.g. broadcast frequencies)
3) Password data
4) Operation time
5) Auto installation flag
6) V-CHIP block setting
5 – 16
LC-37D90U
[2] MAJOR IC INFORMATIONS
1. MAJOR IC INFORMATIONS
1.1. IC501 (MM1630CQ)
This I2C bus-controlled video switch is designed to switch between one-system color difference (component) signal, one-system S video signal and
two-system composite signal.
The analog video signal from the INPUT-1 or INPUT-2 input terminal is fed into this IC for selection. The video output signal from this IC flows through
a low-pass filter into the video signal processing circuit IC3301 (IXB723WJ).
1.2. IC2701 (VHiTA2024++-1Y)
The Class-T type digital audio power amplifier TA2024 gives maximum continuous output of 10 W/ch.
1.3. IC1401 (VHiAN5832SA-1Y)
The AN5832SA is an I2C bus-controlled, US-standard analog TV sound multiplexing demodulator IC. It has the following functions built in: SIF
demodulation, STEREO demodulation, SAP demodulation, dbx noise reduction, and audio AGC.
1.4. IC1403 (VHiAK4683EQ-1Q)
This IC provides for 2-channel A/D and 4-channel D/A (192-kHz sampling).
The built-in digital audio interfaces DIR (Digital Interface Receiver) and DIT (Digital Interface Transmitter) (192 kHz compatible, 6 inputs/1 output) are
compatible with the AES3, IEC60958, S/PDIF, and EIAJ CP1201 standards. Both the DIR and DIT can handle 192-kHz sampling and 24-bit data. The
DIR is also equipped with 6-channel input selector that detects not just PCM data but also Dolby Digital and other non-PCM data.
1.5. IC1406 (VHiNJU26111-1Q)
The 24-bit, DSP core, digital audio processor has the Circle Surround II 5.1, TruSurround XT, Tru Bass, Focus, and Mono-To-Stereo functions. The
Circle Surround II 5.1 feature converts matrix-encoded stereo signals to theater-like 5.1-channel sounds. Un-matrix-encoded signals are also converted to effects-rich 5.1-channel output. The TruSurround XT feature creates three-dimensional sounds, richer than stereo signals.
1.6. IC1507 (VHiTMDS341+-1Y)
The TMDS341 single-chip IC is provided with multiple switching function, in which up to 3 DVI/HDMI ports can be selected for a single display input
terminal.
This 3-port device is also equipped with signal conditioning function and switching function. Each of the ports supports 4-channel TMDS signal, one
hot plug detection, and I2C interface. Each of the 4 TMDS channels, in turn, provides maximum 1.65-Gbps signal transmission rate, fixed 8-dB input
equalization, and enable/disable 3-dB output deemphasis function.
On this IC, the INPUT-3/4 HDMI port and the INPUT-5 DVI port are switched.
1.7. IC1508 (VHiSii9011L-1Q)
The TMDS receiver IC decodes differential serial-transmitted signal to parallel signal. Compatible with the HDCP system, encrypted signals can also
be received.
This IC responds to the INPUT-3/4 HDMI (High-Definition Multimedia Interface) and the INPUT-5 DVI (Digital Visual Interface) selected by IC507.
1.8. IC2002 (RH-iXB345WJZZQ)
The monitor microprocessor is intended to communicate with the main microprocessor and to operate the system. It also controls power of the entire
system.
1.9. IC3301 (RH-iXB723WJQZQ)
This video processor consists of an LSI system-on-chip device. For high-precision data processing, it is equipped with a high-precision 166-MHz, 10bit A/D converter.
For processing analog video signals, this IC supports the NTSC-compatible high-performance multi-format 2D/3D digital Y/C separation video
decoder as well as the video format conversion engine. It provides for 10-bit video signal processing.
1.10. IC3501/3502 (RH-iXB375WJZZQ)
These ICs are 128-Mbit GDDR SDRAM (Graphic Double Data Rate Synchronous DRAM), providing a memory for image processing and buffering
OSD data.
5 – 17
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1.11. IC8101 (RH-iXB281WJZZQ)
This LSI with MPEG-2 system decoder performs back-end processing for digital broadcasting. It is equipped with a CPU (processor core: AM33-3),
descrambler (DES), transport stream de-multiplexer, video decoder (MPEG-2 MP@HL compatible), graphic processor, audio decoder (AC3 compatible), and an NTSC video encoder.
After receiving transport stream from the tuner, the LSI decrypts pay-TV broadcasts with the descrambler. Then using the de-multiplexer, it separates
and decodes the compressed audio and video data to send the signals. In the visual system, the graphic processor makes it possible to overlap subtitles and perform scaling. Digital video signals (Y, Pb and Pr, or 480I/P, 720P and 1081I) and down-converted NTSC signals (Y/C and composite, or
480I) can be sent simultaneously. As for the audio system, decoded AC3 audio can be overlapped with sound effects.
The LSI also contains various interfaces (I2C x 2, UART x 3, an SD Memory Card interface, a Cable CARD interface, etc.) and a GPIO. Using these
interfaces, the CPU controls peripheral circuits of the tuner, SD Memory Cards, Cable CARDs, etc. One of the UARTs is used by the CPU to establish
communications with the monitor microcomputer in the unit, where remote control information or other data is exchanged. Another UART is used for
RS-232C serial communications to connect the unit to a PC.
1.12. IC8301/8302/8303/8304 (RH-iXB024WJZZQ)
These are 256-Mb (4 Mb x 16 I/O x 4 banks) F-die DDR SDRAMs.
1.13. IC8451 (VHiS29GL64A-1Q)
The 64-Mbit page mode flash memory device stores the main CPU program.
1.14. IC8503 (RH-iXB323WJZZQ)
The IEEE 1394a Link-Layer Controllers with Integrated 2-Port PHY provide DTLA encryption support for MPEG2-DVBS, DSS and Audio Data.
1.15. IC8601 (RH-iXB684WJQZQ)
The RH-IXB684WJQZQ comprises a family of advanced QAM and VSB demodulator for the Digital Cable Ready and ATSC environments.
This IC is configurable to operate in either the ITU-J.83B/SCTE DVS-031 compliant 64 QAM or 256 QAM modes used by digital cable systems, or the
ATSC compliant 8VSB mode used in digital terrestrial broadcasting.
For digitally modulated input signals (QAM or 8VSB), the RH-IXB684WJQZQ outputs a parallel or serial MPEG compliant transport stream.
1.16. IC8702 (VHiTC6384AF1EQ)
This is a Standard Memory Interface to SD Memory Controller.
1.17. IC9101 (RH-iXB732WJQZQ)
The high-performance CPLD (Complex Programmable Logic Device) is controlled by the main CPU to send control signals to various mounted
devices.
5 – 18
2. MAJOR IC INFORMATIONS (BLOCK DIAGRAM AND PIN FUNCTION)
2.1. VHiMM1630CQ-1Q (ASSY: IC501)
Video Switch with I2C-bus
• Block Diagram [VHiMM1630CQ-1Q (ASSY: IC501)]
LC-37D90U
• Pin Function [VHiMM1630CQ-1Q (ASSY: IC501)]
Pin No.Pin NameI/OPin Function
1C3IChroma signal input.
7C4I
13C5I
69C1I
75C2I
2S-3ISW of S-terminal.
6S-4I
12S-5I
70S-1I
76S-2I
3V4IComposite signal input.
9V5I
15V6I
17V7I
19V8I
63VINI
65V1I
71V2I
77V3I
5 – 19
LC-37D90U
Pin No.Pin NameI/OPin Function
4S2-4IDetect of S-terminal.
10S2-5I
68S2-1I
74S2-2I
80S2-3I
5Y4ILuminance signal input.
11Y 5I
67Y1I
73Y2I
79Y3I
8,47,53,57 Vcc---Power supply.
14ADRISlave address select terminal.
16BIASIBias.
18,44,62GND---GND.
20L11IDetect of D-terminal scanning line.
26L12I
32L13I
21CY1IColor difference siganl input.
27CY2I
33CY3I
39CY4I
22L21IDetect of D-terminal I/P.
28L22I
34L23I
23PB1IColor difference siganl input.
29PB2I
35PB3I
41PB4I
24L31IDetect of D-terminal aspect ratio.
30L32I
36L33I
25PR1IColor difference siganl input.
31PR2I
37PR3I
43PR4I
38SW1ISwitch for a D-terminal connection check.
40SW2I
42SW3I
45SDAI/ODATA in-output of I2C bus.
46SCLICLK input of I2C bus.
48VOUT4OComposite signal output for teletexts.
61VOUTOComposite signal output for GRS.
49DCOUTOS-DCOUT.
50COUT3OMonitor output (75Ω can drive).
51VOUT3O
52YOUT3O
54PROUT2OColor difference siganl output.
58PROUT1O
55PBOUT2/COUT2OColor difference signal/Chroma signal output.
59PBOUT1/COUT1O
56CYOUT2/YOUT2/VOUT2OColor difference signal/Luminance signal/Composite signal output.
60CYOUT1/YOUT1/VOUT1O
64O1OGeneral-purpose output.
66O2O
72O3O
78O4O
5 – 20
2.2. VHiTA2024++-1Y (ASSY: IC2303)
STEREO DIGITAL AUDIO AMPLIFIER
• Block Diagram [VHiTA2024++-1Y (ASSY: IC2303)]
LC-37D90U
• Pin Function [VHiTA2024++-1Y (ASSY: IC2303)]
Pin No.Pin NameI/OPin Function
2,3DCAP2,
4,9V5D, V5A---Digital 5VDC, Analog 5VDC.
5,8,17AGND1,
6REF---Internal reference voltage; approximately 1.0 VDC.
7OVERLOADBA logic low output indicates the input signal has overloaded the amplifier.
10,14OAOUT1,
11, 15IN V1,
12MUTEWhen set to logic high, both amplifiers are muted and in idle mode. When low (grounded), both
16BIASCAPInput stage bias voltage (approximately 2.4VDC).
18SLEEPWhen set to logic high, device goes into low power mode. If not used, this pin should be
19FAULTA logic high output indicates thermal overload, or an output is shorted to ground, or another out-
20,35PGND2,
22DGND---Digital Ground. Connect to AGND locally (near the TA2024).
24,27,
31,28
25,26,
29,30
Charge pump switching pins. DCAP1 (pin 3) is a free running 300kHz square wave between
VDDA and DGND (12Vpp nominal). DCAP2 (pin 2) is level shifted 10 volts above DCAP1 (pin 3)
with the same amplitude (12Vpp nominal), frequency, and phase as DCAP1.
Single-ended inputs. Inputs are a “virtual” ground of an inverting opamp with approximately
2.4VDC bias.
amplifiers are fully operational. If left floating, the device stays in the mute mode. This pin should
be tied to GND if not used.
grounded.
put.
Supply pins for high current H-bridges, nominally 12VDC.
9CDTOOControl Data Output in Serial Mode and I2C pin= “L”.
10LRCKBI/OChannel Clock B.
11BICKBI/OAudio Serial Data Clock B.
12SDTOBOAudio Serial Data Output B.
13OLRCKAI/OOutput Channel Clock A.
14ILRCKAI/OInput Channel Clock A.
15BICKAI/OAudio Serial Data Clock A.
16SDTOAOAudio Serial Data Output A.
17MCKOOMaster Clock Output.
18TVDD---Output Buffer Power Supply, 2.7V~5.5V.
19DVSS---Digital Ground.
20DVDD---Digital Power Supply, 4.5V~5.5V.
21XTIIX'tal Input.
22XTOOX'tal Output.
23TXOTransmit Channel Output.
26SDAI/OControl Data in Serial Mode and I2C pin= “H”.
27SCLIControl Data Clock in Serial Mode and I2C pin= “H”.
28CSNIChip Select in Serial Mode and I2C pin= “L”.
29SDTIA1IAudio Serial Data Input A1.
30SDTIA2IAudio Serial Data Input A2.
31SDTIA3IAudio Serial Data Input A3.
32SDTIBIAudio Serial Data Input B.
33HVDD---HP Power Supply, 4.5V~5.5V.
34HVSS---HP Ground.
35HPROHP Rch Output.
36HPLOHP Lch Output.
37MUTET---HP Common Voltage Output.
38LOUT2ODAC2 Lch Positive Analog Output.
39ROUT2ODAC2 Rch Positive Analog Output.
40LOUT1ODAC1 Lch Positive Analog Output.
41ROUT1ODAC1 Rch Positive Analog Output.
42VCOM---DAC/ADC Common Voltage Output.
43AVDD2---DAC Power Supply, 4.5V~5.5V.
44AVSS2---DAC Ground.
45LISELOLch Feedback Resistor Output.
46LOPINOLch Feedback Resistor Input. 0.5 x AVDD1.
47ROPINORch Feedback Resistor Input. 0.5 x AVDD1.
48RISELORch Feedback Resistor Output.
49AVSS1---ADC Ground.
50AVDD1---ADC Power Supply, 4.5V~5.5V.
51LIN1ILch Input 1.
52RIN1IRch Input 1.
53LIN2ILch Input 2.
54RIN2IRch Input 2.
55LIN3ILch Input 3.
56RIN3IRch Input 3.
57LIN4ILch Input 4.
58RIN4IRch Input 4.
59LIN5ILch Input 5.
60RIN5IRch Input 5.
61LIN6ILch Input 6.
62RIN6IRch Input 6.
63PVSS---PLL Ground.
64R---External Resistor.
When the input data of DAC follow total 8192 LRCK cycles with “0” input data, this pin goes to “H”. And
when RSTN1 bit is “0”, PWDA bit is “0”, this pin goes to “H”.
When DIT bit= “0” , RX0~3 Through.
When DIT bit= “1” , Internal DIT Output.
When “L”, the AK4683 is powered-down, all registers are reset. And then all digital output pins go “L”.
The AK4683 must be reset once upon power-up.
5 – 24
2.5. VHiNJU26111-1Q (ASSY: IC1406)
SOUND_DSP
• Block Diagram [VHiNJU26111-1Q (ASSY: IC1406)]
LC-37D90U
• Pin Function [VHiNJU26111-1Q (ASSY: IC1406)]
Pin No.Pin NameI/OPin Function
1SDO2OAudio Data Output CH2.
2SDO1OAudio Data Output CH1.
3SDO0OAudio Data Output CH0.
4GPIO0I/OGeneral Purpose IO.
5SCL/SCKII2C Clock / Serial Clock.
6SDA/SDOUTI/OI2C I/O / Serial Output.
7AD1/SDINII2C Address / Serial Input.
8AD2/SSbII2C Address / Serial Enable.
78
80HPD1OPort1 hot plug detector output.
62HPD2OPort2 hot plug detector output.
44HPD3OPort3 hot plug detector output.
40HPD_SINKISink side hot plug detector input.
1, 20, 41, 60NC---No connect.
42OEIOutput enable, active low.
19PREIOutput de-emphasis adjustment.
3SCL1I/OPort1 DDC bus clock line.
64SCL2I/OPort2 DDC bus clock line.
46SCL3I/OPort3 DDC bus clock line.
38SCL_SINKI/OSink side DDC bus clock line.
2SDA1I/OPort1 DDC bus data ine.
63SDA2I/OPort2 DDC bus data ine.
45SDA3I/OPort3 DDC bus data ine.
39SDA_SINKI/OSink side DDC bus data line.
85XTALINICrystal Clock Input.
84XTALOUTOCrystal Clock Output.
79MCLKI/OAudio Master Clock Input Reference.
76SCKOI2S Serial Clock Output.
75WSOI2S Word Select Output.
74SD0OI2S Serial Data Output.
73SD1OI2S Serial Data Output.
72SD2OI2S Serial Data Output.
71SD3OI2S Serial Data Output.
70SPDIFOS/PDIF Audio Output.
67MUTEOMute Audio Output.
Configuration/Programming Pins
91INTOInterrupt Output.
89RESET#IReset Pin. Active LOW.
QE23-0O24-Bit Even Pixel.
QO23-0O24-Bit Odd Pixel.
5 – 27
LC-37D90U
Pin No.Pin NameI/OPin Function
42DSCLIDDC I2C Clock for DDC (5V-tolerant)3.
41DSDAI/ODDC I2C Data for DDC (5V-tolerant)3.
40CSCLIConfiguration I2C Clock (5V-tolerant)3.
39CSDAI/OConfiguration I2C Data (5V-tolerant)3.
90SCDTOIndicates active video at HDMI input port.
38CI2CAII2C Device Address Select.
44PWR5VITMDS Port Transmitter Detect. (5V-tolerant)3.
88RSVDLIReserved, must be tied LOW.
48RSVD---Reserved Pin, Leave unconnected.
43NC---No connect.
Differential Signal Data Pins
51RXC+ITMDS input clock pair.
50RXC-I
55RX0+ITMDS input data pair.
54RX0-I
59RX1+ITMDS input data pair.
58RX1-I
63RX2+ITMDS input data pair.
62RX2-I
1OPCIBrightness sensor.
2CCKMICable check.
3AVCC---A/D conversion reference voltage (3.3V).
4X2OOscillator (32.768kHz) connected.
5X1IOscillator (32.768kHz) connected.
6VCL---Internal step-down power terminal.
7RESETIReset signal input.
8TEST---Not used (VSS pull-down).
9VSS---GND.
10OSC2OOscillator (10.00MHz) connected.
11OSC1IOscillator (10.00MHz) connected.
12VCC---3.3V power supply.
13NMIIFLASH rewriting.
14F_MODE2ITerminal for emulator connection.
15F_MODE3ITerminal for emulator connection.
16F_MODE4ITerminal for emulator connection.
17LVDS_PD1OLVDS power control-1.
18LVDS_PD2OLVDS power control-2.
19LED_INGOAutomatic adjust line switching.
20LED5(OPC)OIC2 reset.
21LED4(YOYAKU)OIC3 reset.
22LED3(OSHIRASE)OH sync presence/absence judge.
23LED2(POWER_LED)OMonitor power red LED control.
24LED1(POWER_BLUE)OMonitor power green LED control.
25IREMIRemote control signal input.
26CSEN1IAVC momentary power failure detection.
27CSEN2IStart request notice from AVC.
28SR_UPIAVC_BU5V line detection.
29SCL_MOI2C clock Line (I2C ch0).
30SDA_MI/OI2C data Line (I2C ch0).
31DDC_POWIDVI Connector check.
32POW_CHK2---Not used (3.3V pull-up).
33POW_CHK1---Not used (3.3V pull-up).
34POWDTC_MILCD PWB power monitoring.
35STBY_SWIMonitor standby switch input.
36MAIN_SWIMain power switch input.
37SCL2_MOControl of I2C clock line (I2C ch1) at AVC side.
38SDA2_MI/OControl of I2C data line (I2C ch1) at AVC side.
39TXD_MOCommunication data output (MONI -> MAIN).
40RXD_MICommunication data input (MAIN -> MONI).
41REQIReturn request to main.
42TVPOW4OLCD TOP PWB 3.3V power control.
43LED_INDONot used.
44LFB_ERRINot used.
45CS_ERRICS control power check terminal.
46POW_ERRIA_D3.3V line check terminal.
47L_FL_ERRIBacklight error detection.
48VSH_INIVSH power error detection.
49FAN_ERRIFAN Error detection.
50VSS---GND.
51PS_ONOAVC main regulator control signal.
52TVPOWOMonitor main regulator control signal.
53FRAMEIFRAME.
54TMDS_RSTOTMDS reset control.
55FAN_CONTOFAN control.
56W_PROT_MOMicroprocessor EEPROM write protect control.
57IC1_CONFOGamma table read request.
58IC1_DONEIGamma tabled end detection.
59MODE1IInput signal state detection.
LC-37D90U
5 – 29
LC-37D90U
Pin No.Pin NameI/OPin Function
60MODE2IInput signal state detection.
61PMUTEOVideo mute.
62DDCRSTOIC1 reset.
63TVPOW2OLCD TOP PWB 1.2V/2.5V power control.
64STBOBacklight control.
65PANEL_POWOPanel power control signal.
66VSH_OUTOPanel 3.3V control.
67MP_CLKI3-wire serial clock.
68MP_DII3-wire serial input.
69MP_DOO3-wire serial output.
70CPLD_OEOCPLD output permit control.
71MP_CSO3-wire serial chip select.
72DAC_CSO3-wire serial chip select (only for MB88146).
73PANEL_SWOPanel power control signal.
74AVSS---GND.
75QSTEMPIMonitor internal temperature check.
76KEY1IOn-set key input 1.
77KEY2IOn-set key input 2.
78KEY3IOn-set key input 3.
79AREA1IDestination setting 1.
80AREA2IDestination setting 2.
AD1XTALIIInput for Clock Synthesizer. Supports 14.31818MHz Oscillator or crystal powered by
AE1XTALOI/OUsed in conjunction with XTALI for 14.31818 crystal output powered by analog PLL.
AD3MLF1ILow pass filter node for memory clock PLL powered by analog PLL.
AC3PLF2ILow pass filter node for video clock PLL powered by analog PLL.
K1RSET1---Reference Voltage for ADC.
J4RSET2---Reference Voltage for ADC.
Ball Assignments for Analog Input Interface.
M4CVBS1IComposite video input 1.
N4CVBS2IComposite video input 2.
N3CVBS3IComposite video input 3.
N2CVBS4IComposite video input 4 or Y input of S-Video 1.
N1CVBS5IComposite video input 5.
P1CVBS6IComposite video input 6 or Y input of S-Video 2.
P2CVBS7IComposite video input 7.
P3CVBS8IComposite video input 8 or Y input of S-Video 3.
P4CVBS9IComposite video input 9.
R4CVBS10IComposite video input 10 or Y input of S-Video 4.
U3Y_G1IY input 1 of component or G input 1 of PC RGB.
U2Y_G2I/OY input 2 of component or G input 2 of PC RGB.
U1Y_G3IY input 3 of component or G input 3 of PC RGB.
V1Y_G4IY input 4 of component or G input 4 of PC RGB.
P5CVBS_NIGround return for CVBS input.
U4Y_G_NIGround return for Y signal input.
W4AIN_N2IGround return for Component input Port 1.
AA2AIN_N3IGround return for Component input Port 2.
K4CVBS_OUT1ICVBS Output 1.
K3CVBS_OUT2ICVBS Output 2.
K2CVBS_OUT3ICVBS Output 3.
T1C4IC input of S-Video 1.
T2C6IC input of S-Video 2.
T3C8IC input of S-Video 3.
T4C10IC input of S-Video 4.
AA1PB_B1IPB input 1 of component or B input 1 of PC RGB.
AB1PB_B2IPB input 1 of component or B input 2 of PC RGB.
AB2PB_B3IPB input 1 of component or B input 3 of PC RGB.
AB3PB_B4IPB input 1 of component or B input 4 of PC RGB.
W3PR_R1IPR input 1 of component or R input 1 of PC RGB.
W2PR_R2IPR input 1 of component or R input 2 of PC RGB.
W1PR_R3IPR input 1 of component or R input 3 of PC RGB.
Y1PR_R4IPR input 1 of component or R input 4 of PC RGB.
H4, H3, H2FS3, FS2, FS1ISCART FS input for Port 1, Port 2, Port 3.
AB4DVSS---Ground of ADC Digital circuit.
AC1DVDD---1.8V power for ADC Digital circuit.
J3AVSS_BG_ASS---ADC ground.
J2AVDD3_BG_ASS---ADC power.
AD4PAVDD1---Power for analog PLL (2.5V).
AE2PAVSS---PLL ground.
AD2PAVSS1---Ground for analog PLL.
AC4PAVSS2---Ground for analog PLL.
AE3PAVDD---PLL power.
AC2PAVDD2---Power for analog PLL (2.5V).
AF3PDVDD---Power for analog PLL.
AE4PDVSS---PLL ground.
G2, R1, Y2, V2, L1AVDD_ADC [56, 4,
G3, T5, AA4, V5, L2AVSS_ADC [56, 4,
AA3, M3AVDD3_ADC [2, 1]---
L3AVDD3_OUTBUF---3.3V power for output.
VDDC---1.8V Digital core power.
VDDM---
VDDH---3.3V Digital I/O power.
VSS---Digital ground.
---Power for analog ADC.
3, 2, 1]
---Ground for analog ADC.
3, 2, 1]
LC-37D90U
5 – 33
LC-37D90U
Pin No.Pin NameI/OPin Function
L4AVSS_OUTBUF---3.3V ground for output.
AD27, AG27LVDS_VSSO---LVDS out buffer ground.
AE24LVDS_VSSD---LVDS Digital ground.
AF27LVDS_VSSA---LVDS analog ground.
AH27LVDS_VSSP---LVDS PLL ground.
AH28LVDS_VDDP---LVDS PLL power.
AF28LVDS_VDDA---LVDS analog power.
AE28LVDS_VDDD---LVDS Digital power.
AD28, AG28LVDS_VDDO---LVDS out buffer power.
Ball Assignments for Reference Voltage.
M1VREFP_1---ADC1 voltage reference +.
M2VREFN_1---ADC1 voltage reference -.
V3VREFP_2---ADC2 voltage reference +.
V4VREFN_2---ADC2 voltage reference -.
Y3VREFP_3---ADC3 voltage reference +.
Y4VREFN_3---ADC3 voltage reference -.
R3VREFP_4---ADC4 voltage reference +.
R2VREFN_4---ADC4 voltage reference -.
Miscellaneous Ball Assignments.
A6RESETISystem reset powered by VDDH/VSS. RESET# forces the chip to a known state. This
pin should be tied to CPU reset.
A7INTNI/OInterrupt signal (active low) powered by VDDH/VSS.
C7PWM0I/OGeneral purpose I/O.
D7PWM1I/OGeneral purpose I/O.
C8TESTMODE0IReserved (Connected to ground).
D8TESTMODE1IReserved (Connected to ground).
B13MCU_CSIInitial LX setting for choosing I2C address & CPU bus Configuration.
C13MCU_CSNIInitial LX setting for choosing I2C address & CPU bus Configuration.
LVDS Output Ball Assignments.
AK27TCLK2MOLVDS 2nd Channel Differential negative CLK out.
AJ27TCLK2POLVDS 2nd Channel Differential positive CLK out.
AK25TE2MOLVDS 2nd Channel Differential negative data out.
AJ25TE2POLVDS 2nd Channel Differential positive data out.
AK26TD2MOLVDS 2nd Channel Differential negative data out.
AJ26TD2POLVDS 2nd Channel Differential positive data out.
AK28TC2MOLVDS 2nd Channel Differential negative data out.
AJ28TC2POLVDS 2nd Channel Differential positive data out.
AB29TA1POLVDS 1st Channel Differential positive data out.
AB30TA1MOLVDS 1st Channel Differential negative data out.
AC29TB1POLVDS 1st Channel Differential positive data out.
AC30TB1MOLVDS 1st Channel Differential negative data out.
AD29TC1POLVDS 1st Channel Differential positive data out.
AD30TC1MOLVDS 1st Channel Differential negative data out.
AF29TD1POLVDS 1st Channel Differential positive data out.
AF30TD1MOLVDS 1st Channel Differential negative data out.
AG29TE1POLVDS 1st Channel Differential positive data out.
AG30TE1MOLVDS 1st Channel Differential negative data out.
AE30TCLK1MOLVDS 1st Channel Differential positive CLK out.
AE29TCLK1POLVDS 1st Channel Differential negative CLK out.
AK30TA2MOLVDS 2nd Channel Differential negative data out.
AJ30TA2POLVDS 2nd Channel Differential positive data out.
AK29TB2MOLVDS 2nd Channel Differential negative data out.
AJ29TB2POLVDS 2nd Channel Differential positive data out.
AH29TF1POLVDS 1st Channel Differential positive CLK out.
AH30TF1MOLVDS 1st Channel Differential negative CLK out.
AJ24TF2POLVDS 2nd Channel Differential negative data out.
AK24TF2MOLVDS 2nd Channel Differential positive data out.
AL8I2CCLK0I/OI2C Serial clock0.
AM8I2CDATA1I/OI2C Serial data line1.
AK8I2CCLK1I/OI2C Serial clock1.
C3USBCLK48MIUSB clock 48MHz.
E5USBDPLSI/OUSB serial data plus.
D4USBDMNSI/OUSB serial data minus.
B2USBOVCRNTIUSB over current.
A2USBPRTPOROUSB port power.
A8TS0DATA7ITransport stream port0 data input (Parallel).
B8TS0DATA6I
C8TS0DATA5I
D8TS0DATA4I
D9TS0DATA3I
C9TS0DATA2I
B9TS0DATA1I
A9TS0DATA0I
C10TS0VALIDITransport stream port0 data valid.
B10TS0SYNCITransport stream port0 data sync.
D10TS0ERRORITransport stream port0 data error.
D11TS0CLKITransport stream port0 data clock.
Shared with UACTS3_N.
Shared with UARXD3.
Shared with UATXD3.
Shared with UA3EXCLK.
Shared with and PIO26.
Shared with and PIO27.
Shared with and PIO28.
Shared with and PIO29.
For watch dog timer.
Shared with and PIO30.
Shared with and PIO31.
Shared with and PIO32.
5 – 42
LC-37D90U
Pin No.Pin NameI/OPin Function
A5TS1DATA7ITransport stream port1 data input (Parallel).
B5TS1DATA6I
C5TS1DATA5I
E6TS1DATA4I
D6TS1DATA3I
C6TS1DATA2I
B6TS1DATA1I
A6TS1DATA0I
C7TS1VALIDITransport stream port1 data valid.
B7TS1SYNCITransport stream port1 data sync.
A7TS1ERRORITransport stream port1 data error.
D7TS1CLKITransport stream port1 data clock.
B3TS2DATAITransport stream port2 data input (Serial).
C4TS2VALIDITransport stream port2 data valid.
B4TS2SYNCITransport stream port2 data sync.
A3TS2ERRORITransport stream port2 data error.
D5TS2CLKITransport stream port2 data clock.
A10TSREQ0OTransport stream data input request0.
A4TSREQ1OTransport stream data input request1.
D13TSOUTDATA7OTransport stream DATA7. Shared with DBUGPCST7.
C13TSOUTDATA6OTransport stream DATA6. Shared with DBUGPCST6.
B13TSOUTDATA5OTransport stream DATA5. Shared with DBUGPCST5.
A13TSOUTDATA4OTransport stream DATA4. Shared with DBUGPCST4.
A12TSOUTDATA3OTransport stream DATA3. Shared with DBUGPCST3.
B12TSOUTDATA2OTransport stream DATA2. Shared with DBUGPCST2.
C12TSOUTDATA1OTransport stream DATA1. Shared with DBUGPCST1.
D12TSOUTDATA0OTransport stream DATA0. Shared with DBUGPCST0.
D14TSOUTCLKIIOutput transport stream data clock input Shared with DBUGTCK.
C14TSOUTCLKOOTransport stream data clock output. Shared with DBUGDCLK.
C11TSOUTVALIDOTransport stream data clock valid. Shared with DBUGPCST8.
B11TSOUTCGMSOTransport stream CGMS (Copy Control), TSCH (Device Number) serial data output.
A11TSOUTSYNCOTransport stream data sync.
R33ASDO4OAudio data serial output4.
R32ASDO3OAudio data serial output3. Shared with DBUGTPC3.
R31ASDO2OAudio data serial output2. Shared with DBUGTPC2.
T31ASDO1OAudio data serial output1. Shared with DBUGTPC1.
T32ASDO0OAudio data serial output0. Shared with DBUGTDO.
T30AMCLKIAudio oner sampling clock 256fs or 384fs.
T33ALRCKOOLeft/Right clock for audio output.
U33ABCKOOBit clock for audio output.
V31ASDI1IAudio data serial input1. Shared with DBUGTDI.
V32ASDI0IAudio data serial input0. Shared with DBUGTMS.
U30ALRCKIILeft/Right clock for audio input. Shared with DBUGTRST_N.
V30ABCKIIBit clock for audio input.
V33CMPREQ_NIPES request signal for external AAC decoder.
U32CMPDATOPES data output.
U31CMPCLKOPES data bits clock output.
AJ28VIDINCLKIExternal video input clock. Shared with DBUGTCK.
AH29VIDINHIExternal video horizontal sync. Shared with DBUGDCLK.
AJ29VIDINVIExternal video vertical sync. Shared with DBUGPCST8.
AK29VIDINDATA7IExternal video data input7. Shared with DBUGPCST7 and VCRDOUT7.
AL29VIDINDATA6IExternal video data input6. Shared with DBUGPCST6 and VCRDOUT6.
AM29VIDINDATA5IExternal video data input5. Shared with DBUGPCST5 and VCRDOUT5.
AN29VIDINDATA4IExternal video data input4. Shared with DBUGPCST4 and VCRDOUT4.
AN30VIDINDATA3IExternal video data input3. Shared with DBUGPCST3 and VCRDOUT3.
AM30VIDINDATA2IExternal video data input2. Shared with DBUGPCST2 and VCRDOUT2.
AL30VIDINDATA1IExternal video data input1. Shared with DBUGPCST1 and VCRDOUT1.
AK30VIDINDATA0IExternal video data input0. Shared with DBUGPCST0 and VCRDOUT0.
AJ30VIDINCBCR7IExternal video data CB/CR input7. Shared with DBUGTDO.
AK31VIDINCBCR6IExternal video data CB/CR input6. Shared with DBUGTDI.
AL31VIDINCBCR5IExternal video data CB/CR input5. Shared with DBUGTMS.
AM31VIDINCBCR4IExternal video data CB/CR input4. Shared with DBUGTRST_N.
AN31VIDINCBCR3IExternal video data CB/CR input3. Shared with DBUGTPC3.
AN32VIDINCBCR2IExternal video data CB/CR input2. Shared with DBUGTPC2.
5 – 43
LC-37D90U
Pin No.Pin NameI/OPin Function
AM32VIDINCBCR1IExternal video data CB/CR input1. Shared with DBUGTPC1.
AM33VIDINCBCR0IExternal video data CB/CR input0.
AL23HDOUTOHorizontal sync output.
AK24VDOUTOVertical sync output.
AK23DOUTCLKODisplay clock output.
AK22DOUTY9OVideo Y output9 or Video G output9. Shared with PIO30.
AL22DOUTY8OVideo Y output8 or Video G output8. Shared with PIO29.
AM22DOUTY7OVideo Y output7 or Video G output7. Shared with PIO28.
AN22DOUTY6OVideo Y output6 or Video G output6. Shared with PIO27.
AN21DOUTY5OVideo Y output5 or Video G output5. Shared with PIO26.
AM21DOUTY4OVideo Y output4 or Video G output4. Shared with PIO25.
AL21DOUTY3OVideo Y output3 or Video G output3. Shared with PIO24.
AK21DOUTY2OVideo Y output2 or Video G output2. Shared with PIO23.
AK20DOUTY1OVideo Y output1 or Video G output1. Shared with PIO22.
AL20DOUTY0OVideo Y output0 or Video G output0. Shared with PIO21.
AM20DOUTPB9OVideo PB output9 or Video B output9. Shared with PIO32.
AN20DOUTPB8OVideo PB output8 or Video B output8. Shared with DBUGPCST8.
AN19DOUTPB7OVideo PB output7 or Video B output7. Shared with DBUGPCST7.
AM19DOUTPB6OVideo PB output6 or Video B output6. Shared with DBUGPCST6.
AL19DOUTPB5OVideo PB output5 or Video B output5. Shared with DBUGPCST5.
AK19DOUTPR4OVideo PB output4 or Video B output4. Shared with DBUGPCST4.
AK18DOUTPR3OVideo PB output3 or Video B output3. Shared with DBUGPCST3.
AL18DOUTPB2OVideo PB output2 or Video B output2. Shared with DBUGPCST2.
AM18DOUTPB1OVideo PB output1 or Video B output1. Shared with DBUGPCST1.
AN18DOUTPB0OVideo PB output0 or Video B output0. Shared with DBUGPCST0.
AN17DOUTPR9OVideo PR output9 or Video R output9. Shared with PIO31 and VCRDOUT7.
AM17DOUTPR8OVideo PR output8 or Video R output8. Shared with DBUGTCK and VCRDOUT6.
AL17DOUTPR7OVideo PR output7 or Video R output7. Shared with DBUGDCLK and VCRDOUT5.
AK17DOUTPR6OVideo PR output6 or Video R output6. Shared with DBUGTDO and VCRDOUT4.
AK16DOUTPR5OVideo PR output5 or Video R output5. Shared with DBUGTDI and VCRDOUT3.
AL16DOUTPR4OVideo PR output4 or Video R output4. Shared with DBUGTMS and VCRDOUT2.
AM16DOUTPR3OVideo PR output3 or Video R output3. Shared with DBUGTRST_N and VCRDOUT1.
AN16DOUTPR2OVideo PR output2 or Video R output2. Shared with DBUGTPC3 and VCRDOUT0.
AN15DOUTPR1OVideo PR output1 or Video R output1. Shared with DBUGTPC2.
AM15DOUTPR0OVideo PR output0 or Video R output0. Shared with DBUGTPC1.
AM23FLPHOFrame field.
AN23HBLANKOHorizontal blanking signal.
AN24VBLANKOVertical blanking signal.
AM24BGATEOBlack level ID zone specifying signal.
AL24YSOVideo Graphic ID signal.
AK25DCLKI74MI74MHz clock input for HD.
AL25DCLKI54MI54MHz clock input for SD.
AN26DCLKICAPIClock input for capture 74M/54M.
AM25PWM74MOPWM for 74MHz clock.
AN25PWM54MOPWM for 54MHz clock.
AK26VCRCLKOOClock output for ‘VCR standard digital video output’.
AE31YOUTOYOUT for playback.
AF31PBOUTOPBOUT for playback.
AG31PROUTOPROUT for playback.
AA31VCRYOUTOVOUT for recording.
AB31VCRCOUTOCOUT for recording.
AC31VCRCVOUTOCVBS OUTPUT for recording.
AE32YNEGOYOUT inversed signal for playback should be connect pull-down resister.
AF32PBENGOPBOUT inversed signal for playback should be connect pull-down resister.
AG32PRNEGOPROUT inversed signal for playback should be connect pull-down resister.
AA32VCRYNEGOYOUT inversed signal for recording should be connect pull-down resister.
AB32VCRCNEGOCOUT inversed signal for recording should be connect pull-down resister.
AC32VCRCVNEGOCVBS OUT inversed signal for recording should be connect pull-down resister.
45, 46CK, CKIClock : CK and CK are differential clock inputs. All address and control input signals are sampled on the
positive edge of CK and negative edge of CK. Output (read) data is referenced to both edges of CK.
Internal clock signals are derived from CK/CK.
44CKEIClock Enable : CKE HIGH activates, and CKE LOW deactivates internal clock signals, and device input
24CSIChip Select : CS enables (registered LOW) and disables(registered HIGH) the command decoder. All
23, 22, 21RAS, CAS, WEICommand Inputs : RAS, CAS and WE (along with CS) define the command being entered.
20, 47L(U)DMIInput Data Mask : DM is an input mask signal for write data. Input data is masked when DM is sampled
26, 27BA0, BA1IBank Addres Inputs : BA0 and BA1 define to which bank an ACTIVE, READ, WRITE or PRECHARGE
29, 30,
31, 32,
35, 36,
37, 38,
39, 40,
28, 41,
A [0 : 12]IAddress Inputs : Provide the row address for ACTIVE commands, and the column address and AUTO
42
buffers and output drivers. Deactivating the clock provides PRECHARGE POWER-DOWN and SELF
REFRESH operation (all banks idle), or ACTIVE POWER-DOWN (row ACTIVE in any bank). CKE is
synchronous for all functions except for disabling outputs, which is achieved asynchronously. Input buffers, excluding CK, CK and CKE are disabled during power-down and self refresh modes, providing low
standby power. CKE will recognize an LVCMOS LOW level prior to VREF being stable on power-up.
commands are masked when CS is registered HIGH. CS provides for external bank selection on systems with multiple banks. CS is considered part of the command code.
HIGH along with that input data during a WRITE access. DM is sampled on both edges of DQS.
Although DM pins are input only, the DM loading matches the DQ and DQS loading. LDM corresponds
to the data on DQ0~D7 ; UDM corresponds to the data on DQ8~DQ15. DM may be driven high, low, or
floating during READs.
command is being applied.
PRECHARGE bit for READ/WRITE commands, to select one location out of the memory array in the
respective bank. A10 is sampled during a PRECHARGE command to determine whether the PRECHARGE applies to one bank (A10 LOW) or all banks (A10 HIGH). If only one bank is to be precharged, the bank is selected by BA0, BA1. The address inputs also provide the op-code during a
MODE REGISTER SET command. BA0 and BA1 define which mode register is loaded during the
MODE REGISTER SET command (MRS or EMRS).
5 – 47
LC-37D90U
Pin No.Pin NameI/OPin Function
2, 4, 5, 7,
8, 10, 11,
13, 54,
56, 57,
59, 60,
62, 63,
16, 51L(U)DQSI/OData Strobe : Output with read data, input with write data. Edge-aligned with read data, centered in write
data. Used to capture write data. LDQS corresponds to the data on DQ0~D7 ; UDQS corresponds to
the data on DQ8~DQ15.
NC---No Connect : No internal electrical connection is present.
53
VDDQ---DQ Power Supply : +2.5V ± 0.2V.
VSSQ---DQ Ground.
49VREFISSTL_2 reference voltage.
5 – 48
2.13. VHiS29GL64A-1Q (ASSY: IC8451)
64-Mbit Page Mode Flash Memory
• Block Diagram [VHiS29GL64A-1Q (ASSY: IC8451)]
LC-37D90U
• Pin Function [VHiS29GL64A-1Q (ASSY: IC8451)]
Pin No.Pin NameI/OPin Function
13, 10, 9, 16, 17,
48, 1, 2, 3, 4, 5, 6,
7, 8, 18, 19, 20, 21,
22, 23, 24, 25
43, 41, 39, 36, 34,
32, 30, 44, 42, 40,
38, 35, 33, 31, 29
45DQ15I/ODQ15 (Data input/output, word mode).
26CE#IChip Enable input.
28OE#IOutput Enable input.
11WE#IWrite Enable input.
14WP#/ACCIHardware Write Protect input/Programming Acceleration input.
12RESET#IHardware Reset Pin input.
15RY/BY#OReady/Busy output.
47BYTE#ISelects 8-bit or 16-bit mode.
37Vcc---3.0 volt-only single power supply.
27, 46Vss---Device Ground.
A21-A0I22 Address inputs.
DQ14-DQ0I/O15 Data inputs/outputs.
5 – 49
LC-37D90U
2.14. RH-iXB323WJZZQ (ASSY: IC8503)
IEEE 1394a Link-Layer Controllers
• Block Diagram [RH-iXB323WJZZQ (ASSY: IC8503)]
• Pin Function [RH-iXB323WJZZQ (ASSY: IC8503)]
Pin No.Pin NameI/OPin Function
Audio PLL
F14VCO_CLKIInput from VCO. This is used to generate internal audio clocks for receive clock recovery.
Audio frequency: 24.576MHz.
K10REF_SYTOOutput for external phase detector. This signal represents the SYT match for received audio pack-
ets. The phase detector uses it as an input to detect differences between the SYT match and the
VCO clock.
J11DIV_VCOOOutput for external phase detector. This signal is the divided VCO_CLK. It is used by the external
phase detector to compare with the REF_SYT signal. The divide ratios are set up in CFR.
Audio Interface
Note: When DAC I/F is not used, DAC_* can be directly tied to GND as long as AudCfg. Enable is set to 0.
When AudCfg. Enable to 1, DAC_* outputs are enabled.
B13DAC_MCKOAudio master clock.
D12DAC_BCKI/OAudio DAC Interface Bit clock.
The audio DAC interface can be used with any also path. However, only one audio stream can be
transmitted or received at one time using either the DAC interface or the 60958 interface.
G1260958_INI60958 Bi-phase encoded data input.
H1060958_OUTO60958 Bi-phase encoded data output.
A12AUDIO_ERROAudio Error Signal. The RH-IXB323WJZZQ assert this signal whenever an audio error condition
occurs. (Receive from 1394 only.)
B14AUDIO_MUTEOAudio Mute Signal. The RH-IXB323WJZZQ assert this signal whenever an audio error condition
occurs. (Receive from 1394 only.)
PHY Interface
A6TPA0NI/OTwisted Pair A Differential Signal Terminals. For an unused port, TPAN and TPAP signals can be left
C4TPA1N
B6TPA0P
B3TPA1P
E7TPB0NI/OTwisted Pair B Differential Signal Terminals. For an unused port, TPBN and TPBP signals should be
C5TPB1N
E6TPB0P
B4TPB1P
D5TPBIAS0I/OTwisted Pair Bias Output. These signals provide the 1.86V nominal bias voltage needed for proper
A3TPBIAS1
A1R1---Current Setting Resistors.
B1R0
E1XI---Crystal Oscillator Inputs. These terminals connect to a 24.576MHz parallel resonant fundamental
E2XO
B7CPSICable Power Status input.
A7CANOCable Not Active. This pin is asserted whenever LPS is low and a link on packet or other bus event
E8WAKEUPOWake-up output. This signal is asserted whenever LPS is low and a link on packet or other bus
D8BIASDISIBias Disable Function. This pin controls the PHY bias disable function at power-up and reset. The
C11PHY_TEST_MODEnITI use only. This pin is low PHY testing. Should be tied high for normal operation.
Other Function
A8PHYHCLKOPHY half clock output. 24.576MHz clock is output from this pin.
A9PHY8CLKOPHY Eighth Clock output. Programmable clock output.
N10RESETnIDevice reset. This signal resets all logic. This includes the PHY, link core, buffers, and random logic.
G4RESET_HOSTnIHost Reset. In PCI mode, this signal functions as PCI RST#. It is for connection to PCI RST# on the
C8RESET_LINKnILink Reset. Turns off clocks to all logic except PHY logic necessary for 1394 repeater mode.
JTAG Interface
L9JTAG_TMSIJTAG Test Mode Selector pin.
K9JTAG_TDIIJTAG Test Data Input pin.
L10JTAG_TDOOJTAG Test Data Output pin.
open.
tied to GND.
operation of the twisted pair driver and receivers for signaling an active connection to a remote
node.
mode crystal.
is received from the 1394 bus.
event is received from the 1394 bus.
pin value is AND-ed with the Phy Cfg. Bias Dis CFR value. When both are set to 1, the bias disable
circuits enabled. When either is set to 0, the bias disable circuit is disabled.
The system should be able to control this signal for AKE process.
PCI bus.
5 – 50
LC-37D90U
Pin No.Pin NameI/OPin Function
P9JTAG_TCKIJTAG Test Clock pin.
N9JTAG_TRSTnIJTAG Reset pin. Active Low only.
MCIF Interface (PCI, 68K and SRAM-Like Interface
A14MCIF_SEL1IMicrocontroller Interface Select. This pin is sampled at power-up and reset.
E9MCIF_SEL0
F4PCI_CLKIPCI Clock. Max frequency is 33MHz.
F2PCI_INTAn
(MCIF_INTn)
K6PCI_C/BE0nI/OPCI Bus Command/Byte Enable 0.
L5PCI_C/BE1nI/OPCI Bus Command/Byte Enable 1.
M1PCI_C/BE2nI/OPCI Bus Command/Byte Enable 2.
H4PCI_C/BE3nI/OPCI Bus Command/Byte Enable 3.
F1PCI_REQnOPCI Request. (Active low)
P4PCI_SERRnOPCI System Error. (Active low)
P2PCI_STOPn
(MCIF_CSn)
M3PCI_TRDYn
(MCIF_Wen/
MCIF_STRBn)
Note: Please note that PCI address/data line sequencing does not match SRAM or 68K mode. For example PCI_AD [6] is multiplexed with MCIF_D
[7]. Signals with mismatching sequence are highlighted in RED.
Please be extra cautious with routing data/address line correctly on PCB.
SRAM-like Interface Read Enable. (Active low)
68k-I/F Read/Write enable. Ex-CPU drives this signal to 1 for aread operation and 0 for a write operation.
I/OPCI Parity.
SRAM-like Interface Endianness setting. When set to 1, the interface will be byte swapped (based
on 4 bytes). When set to 0, the interface byte order will not be changed.
68k-I/F Endianness setting. When set to 1, the interface will be byte swapped (based on 4 bytes).
When set to 0, the interface byte order will not be changed.
B10DMAREQ_CH0nOExternal DMA Request Signal-Channel 0. The RH-IXB323WJZZ will drive this signal low when it is
A13DMAACK_CH0nIExternal DMA Acknowledge Signal-Channel 0. The system DMA controller will drive this high when
D10DMAREQ_CH1nOExternal DMA Request Signal-Channel 1. The RH-IXB323WJZZ drive this signal low when it is
C9DMAACK_CH1nIExternal DMA Acknowledge Signal-Channel 1. The system DMA controller will drive this high when
HSDI0
Note: If this port is not used, all HSD1 signals can be tied to GND as long as HSDI0Cfg. Enable is set to 0.
G13HSDIO_CLKzI/OHSDI Port 0 Clock. All signals and data on HSDI Port 0 are clocked using this clock.
G10HSDIO_SYNCzI/OHSDI port 0 synchronization signal. This signal is used to indicate the start of packet (or MPEG2
G11HSDIO_DVALIDz
(HSDIO_ENz)
G14HSDIO_ERRORz
(HSDI0_FrameSyncz)
M10DSSCIK27IDSS 27MHz system clock count. The 27MHz clock input on this pin is used to generate the SCC
D14HSDIO_D0I/OHSDI port 0 data 0 pin. Data 0 is the least significant bit on the HSDI data bus.
E13HSDIO_D1I/OHSDI port 0 data 1 pin. In HSDI transmit serial mode (1394 TX), HSDI0_D [7:1] are in don't care sta-
E14HSDIO_D2I/OHSDI Port 0 Data 2 Pin.
E12HSDIO_D3I/OHSDI Port 0 Data 3 Pin.
E11HSDIO_D4I/OHSDI Port 0 Data 4 Pin.
F10HSDIO_D5I/OHSDI Port 0 Data 5 Pin.
F12HSDIO_D6I/OHSDI Port 0 Data 6 Pin.
F11HSDIO_D7I/OHSDI Port 0 Data 7 Pin. Data 7 is the most significant bit on the HSDI data bus.
HSDI1
Note: If this port is not used, all HSD1 signals can be tied to GND as long as HSDI1Cfg. Enable is set to 0.
L12HSDI1_CLKzI/OHSDI port 1 clock. All signal and data on HSDI port 1 are clocked using this clock.
K12HSDI1_SYNCzI/OHSDI port 1 synchronization signal. This signal is used to indicate the start of packet (or MPEG2
ready for the system DMA controller. This signal is hi-Z when not driven low.
it has received DMAREQ_CH0n signal and is ready to transfer data. The RH-IXB323WJZZ stop
driving the DMAREQ_CH0n signal once this signal is received.
ready for the system DMA controller. This signal is hi-Z when not driven low.
it has received the DMAREQ_CH1n signal and is ready to transfer data. The RH-IXB323WJZZ stop
driving the DMAREQ_CH1n signal once this signal is received.
cell.)
For transmit onto 1394, this signal is input to the RH-IXB323WJZZ from the system with the data.
For receive from 1394, the RH-IXB323WJZZ outputs this signal with the data.
If not used in transmit mode, this signal can be tied low.
I/OHSDI port 0 Data Valid Pin. This pin indicate if data on the HSDI data bus is valid for reading or writ-
ing.
For transmit onto 1394, this signal is input to the RH-IXB323WJZZ by the system with the data.
For receive from 1394, the RH-IXB323WJZZ outputs this signal with the data.
If not used in transmit mode, this signal can be tied low.
HSDI port 0 enable pin (HSDI0_Enz) in HSDI RX mode 8/9 (celynx sync mode B compatible
modes).
This signal is always an input in HSDI RX mode 8/9. This signal indicates whether data can be
driven onto the HASID bus. (i.e. if HSDI0_ENz is disserted, HSDI0 data bus and HSDI0 sync will be
tri-stated).
I/OHSDI port 0 Error pin in MPEG2-DSS mode. This signal is used to indicate the value of the TS error
bit in the 10 bytes DSS header.
HSDI1_Frame Sync pin HSDI DV mode (TX modes 6/7, RX modes 6-9). This signal is used to indi-
cate the start of DV frames.
This pin is not used in MPEG2-DVB mode. This signal can be left open when HSDI0 is programmed
for RX direction (1394 RX) only. This signal should be pulled up/down when HSDI0 is programmed
for TX direction (1394 TX) or used for both directions.
timestamp in the DSS 10 bytes header.
This pin is used to generate the SCC field for all three HSDI ports (HSDI0, HSDI1, and HSDI2.)
This pin is valid on MPEG2-DSS transmit only. This pin can be tied directly to GND in other video or
audio modes.
In serial mode, only HSDI0_D [0] is used, HSDI0_D [7:1] are not used.
tus. In HSDI receive serial mode (1394 RX), HSDI0_D [7:1] are Hi-Z. In serial mode, HSDI0_D [7:1]
can be tied directly to GND.
(For serial mode operation, see PIN description for HSDI0_D1 above.)
(For serial mode operation, see PIN description for HSDI0_D1 above.)
(For serial mode operation, see PIN description for HSDI0_D1 above.)
(For serial mode operation, see PIN description for HSDI0_D1 above.)
(For serial mode operation, see PIN description for HSDI0_D1 above.)
(For serial mode operation, see PIN description for HSDI0_D1 above.)
cell.)
For transmit onto 1394, this signal is input to the RH-IXB323WJZZQ from the system with the data.
For receive from 1394, the RH-IXB323WJZZQ outputs this signal with the data.
If not used in transmit mode, this signal can be tied low.
5 – 52
LC-37D90U
Pin No.Pin NameI/OPin Function
L14HSDI1_DVALIDz
(HSDI1_Enz)
L13HSDI1_ERRORz
(HSDI1_FrameSyncz)
H12HSDI1_D0I/OHSDI port 1 data 0 pin. Data 0 is the least significant bit on the HSDI data bus.
H13HSDI1_D1I/OHSDI port 1 data 1 pin. In HSDI transmit serial mode (1394 TX), HSDI1_D [7:1] are in don't care sta-
H11HSDI1_D2I/OHSDI Port 1 Data 2 Pin.
J10HSDI1_D3I/OHSDI Port 1 Data 3 Pin.
J14HSDI1_D4I/OHSDI Port 1 Data 4 Pin.
J13HSDI1_D5I/OHSDI Port 1 Data 5 Pin.
J12HSDI1_D6I/OHSDI Port 1 Data 6 Pin.
K14HSDI1_D7I/OHSDI Port 1 Data 7 Pin. Data 7 is the most significant bit on the HSDI data bus.
HSDI2
Note: If this port is not used, all HSD1 signals can be tied to GND as long as HSDI2Cfg. Enable is set to 0.
M11HSDI2_CLKzI/OHSDI Port 2 clock. All signals and data on HSDI port 2 are clocked using this clock.
N11HSDI2_SYNCzI/OHSDI Port 2 Synchronization signal is used to indicate the start of packet (or MPEG2 cell.)
P13HSDI2_DVALIDz
(HSDI2_Enz)
N12HSDI2_ERRORz
(HSDI2_FrameSyncz)
P12HSDI2_D0I/OHSDI1 port 2 Data 0 pin.
GPIO (General-Purpose Input/Output)
P10GPIO0I/OGPIO. Output is controlled by the internal register.
L11GPIO1I/OGPIO. Output is controlled by the internal register. Input is monitored by internal register.
I/OHSDI port 1 data Valid pin. This pin indicates if data on the HSDI data bus is valid for reading or writ-
ing.
For transmit onto 1394, this signal is input to the RH-IXB323WJZZQ by the system with the data.
For receive from 1394, the RH-IXB323WJZZQ outputs this signal with the data.
If not used in transmit mode, this signal can be tied low.
HSDI port 1 enable pin (HSDI1_Enz) in HSDI RX mode 8/9 (celynx sync mode B compatible
modes).
This signal is always an input in HSDI RX mode 8/9. This signal indicates whether data can be drive
onto the HSDI bus. (i.e. if HSDI1_Enz is disserted, HSDI1 data bus and HSDI1 sync will be tristated).
I/OHSDI port 1 Error pin in MPEG2-DSS mode. This signal is used to indicate the value of the TS error
bit in the 10 bytes DSS header.
HSDI1_Frame Sync pin HSDI DV mode (TX modes 6/7, RX modes 6-9). This signal is used to indi-
cate the start of DV frames.
This pin is not used in MPEG2-DVB mode. This signal can be left open when HSDI1 is programmed
for RX direction (1394 RX) only. This signal should be pulled up/down when HSDI1 is programmed
for TX direction (1394 TX) or used for both directions.
In serial mode, only HSDI1_D [0] is used, HSDI1_D [7:1] are not used.
tus. In HSDI receive serial mode (1394 RX), HSDI1_D [7:1] are Hi-Z. In serial mode, HSDI1_D [7:1]
can be tied directly to GND.
(For serial mode operation, see PIN description for HSDI1_D1 above.)
(For serial mode operation, see PIN description for HSDI1_D1 above.)
(For serial mode operation, see PIN description for HSDI1_D1 above.)
(For serial mode operation, see PIN description for HSDI1_D1 above.)
(For serial mode operation, see PIN description for HSDI1_D1 above.)
(For serial mode operation, see PIN description for HSDI1_D1 above.)
For transmit onto 1394, this signal is input to the RH-IXB323WJZZQ from the system with the data.
For receive from 1394, the RH-IXB323WJZZQ outputs this signal with the data.
If not used in transmit mode, this signal can be tied low.
I/OHSDI Port 2 Data Valid Pin This pin indicates if data on the HSDI data bus is valid for reading or writ-
ing.
For transmit onto 1394, this signal is input to the RH-IXB323WJZZQ from the system with the data.
For receive from 1394, the RH-IXB323WJZZQ outputs this signal with the data.
If not used in transmit mode, this signal can be tied low.
HSDI port 2 enable pin (HSDI2_ENz) in HSDI RX mode 8/9 (ceLynx Sync mode B compatible
modes).
This signal always an input in HSDI RX mode 8/9. This signal indicates whether data can be driven
onto the HSDI bus. (i.e. if HSDI2_ENz is disserted, HSDI2 data bus and HSDI2_Sync will be tristated).
I/OHSDI Port 2 Error pin in MPEG2-DSS mode. This signal is used to indicate the value of the TS error
bit in the 10 bytes DSS header.
HSDI2_Frame Sync pin in HSDI DV mode (TX Modes 6/7, RX Modes 6-9). This signal is used to
indicate the start of DV frames.
This pin is not used in MPEG2-DVB mode. This signal can be left open when HSDI2 is programmed
for RX direction (1394 RX) only. This signal should be pulled up/down when HSDI2 is programmed
for TX direction (1394 TX) or used for both directions.
HSDI port 2 only supports serial data. HSDI2_D0 is the only data pin.
Input is monitored by internal register.
Can be used as watermark for also buffer 0.
For HSDI0 RX mode 8/9 (ceLynx Sync mode B compatible), it can be configured for HSDI0 AV output.
5 – 53
LC-37D90U
Pin No.Pin NameI/OPin Function
M13GPIO2I/OGPIO. Output is controlled by the internal register. Input is monitored by internal register.
N14GPIO3I/OGPIO. Output is controlled by the internal register. Input is monitored by internal register.
M14GPIO4I/OGPIO. Output is controlled by the internal register. Input is monitored by internal register.
B11GPIO5I/OGPIO. Output is controlled by the internal register. Input is monitored by internal register.
A10GPIO6I/OGPIO. Output is controlled by the internal register. Input is monitored by internal register.
A11GPIO7I/OGPIO. Output is controlled by the internal register. Input is monitored by internal register.
E10GPIO8I/OGPIO. Output is controlled by the internal register. Input is monitored by internal register.
B9GPIO9I/OGPIO. Output is controlled by the internal register. Input is monitored by internal register.
C7GPIO10I/OGPIO. Output is controlled by the internal register. Input is monitored by internal register.
Test Modes
D9TEST_MODEIUsed for internal TI testing. Should be tied to GND for normal operation.
A2, A4,
C2, C3,
D3
Power and Ground Signals
F3, J5,
L2, K5,
M9, P14,
K11,
C14, B8
E3, E4,
N2, N3,
M12,
N13,
C13, C12
D1PLLVDD1.5---1.5V power supply for PHY PLL.
C1PLLVSS---PLL ground.
G5, L4,
N4, M7,
P11,
K13,
H14,
F13,
B12, C10
D2, D7,
C6, A5
D6, B5,
D4, B2
Thermal Balls
E5, J6,
J7, J8,
J9, H6,
H7, H8,
H9, G6,
G7, G8,
G9, F6,
F7, F8,
NO_CONNECT---These pins should not be connected to any signal, power, or ground.
VDD3.3---3.3V power supply for I/O power.
VDD1.5---1.5V power supply for core power.
VSS---Ground.
AVdd3.3---Analog VDD.
AVSS---Analog Ground.
------The center device balls are connected together, but electrically isolated from the device. For thermal
F9
Can be used as watermark for also buffer 1.
For HSDI1 RX mode 8/9 (ceLynx Sync mode B compatible), it can be configured for HSDI1 AV output.
Can be used as watermark for also buffer 2.
For HSDI2 RX mode 8/9 (ceLynx Sync mode B compatible), it can be configured for HSDI2 AV output.
Can be used as watermark for any Async buffer.
Can be used as watermark for any Async buffer.
Can be used as watermark for any Async buffer.
Can be used as watermark for any Async buffer.
Can be used as watermark for any Async buffer.
purposes, its recommended to connect these balls to a thermal dissipating ground plane (e.g. Vss).
5 – 54
2.15. RH-iXB684WJQZQ (ASSY: IC8601)
DEMODULATOR
• Block Diagram [RH-iXB684WJQZQ (ASSY: IC8601)]
• Pin Function [RH-iXB684WJQZQ (ASSY: IC8601)]
Pin No.Pin NameI/OPin Function
Analog to Digital Converter (ADC) Interface
11ADC_INNIADC negative differential input.
10ADC_INPIADC positive differential input.
17ADC_VREF_NOADC negative reference.
14ADC_VREF_POADC positive reference.
51MPEG_CLKOMPEG clock.
41MPEG_DATA_0OMPEG parallel data output bit 0.
42MPEG_DATA_1OMPEG parallel data output bit 1.
47MPEG_DATA_2OMPEG parallel data output bit 2.
48MPEG_DATA_3OMPEG parallel data output bit 3.
50MPEG_DATA_4OMPEG parallel data output bit 4.
54MPEG_DATA_5OMPEG parallel data output bit 5.
57MPEG_DATA_6OMPEG parallel data output bit 6.
59MPEG_DATA_7/
SER_DATA
63MPEG_DATA_ENOMPEG data enable.
65MPEG_ERROMPEG error.
66MPEG_PKT_SYNCOMPEG packet sync.
I2C Interface
94I2C_ADDR0II2C slave address bit 0.
95I2C_ADDR1II2C slave address bit 1.
67I2C_SCLI/OI2C serial clock.
71I2C_SDAI/OI2C serial data.
78TCKIBoundary scan serial clock. Must be pulled down to DGND through 10 KO resistor.
73TDIIBoundary scan serial input. Must be pulled up to 3.3V.
82TDOOBoundary scan serial output.
77TMSIBoundary scan test mode select. Must be pulled up to 3.3V.
76TRSTIBoundary scan asynchronous reset. Must be pulled up to 3.3V.
GPIO Interface
104GPIO_0I/OGeneral purpose I/O bit 0.
103GPIO_1I/OGeneral purpose I/O bit 1.
100GPIO_2/PDET_COMP_INI/OGeneral purpose I/O bit 2 - or -Demodulator RF AGC input from the peak power compar-
99GPIO_3I/OGeneral purpose I/O bit 3.
98GPIO_4I/OGeneral purpose I/O bit 4.
93GPIO_5I/OGeneral purpose I/O bit 5.
89GPIO_6I/OGeneral purpose I/O bit 6.
88GPIO_7I/OGeneral purpose I/O bit 7.
87GPIO_8I/OGeneral purpose I/O bit 8.
84GPIO_9I/OGeneral purpose I/O bit 9.
83GPIO_10I/OGeneral purpose I/O bit 10.
AGC Interface
100GPIO_2/PDET_COMP_INOGeneral purpose I/O bit 2 - or -Demodulator RF AGC input from the peak power compar-
111PDET_REF_OUTODemodulator RF AGC - SDM peak power comparator reference output to tuner power
114RF_AGCODemodulator RF AGC - SDM output to the tuner's RF AGC amplifier; requires external
117AUX_AGCODemodulator AGC - SDM output to auxiliary IF or RF AGC; requires external low-pass fil-
119IF_AGCODemodulator IF AGC - SDM output to the IF AGC amplifier; requires external low-pass fil-
67#REIRead enable. The content of the register is output to D [15:0] when making it to “0”.
100#WEIWrite enable. When “0” is connected by three clocks, D [15:0] value is written in the register.
7BE1IByte enable. Most Significant Byte becomes accessible at BE1=BEPOL.
12BE0IByte enable. Least Significant Byte becomes accessible at BE0=BEPOL.
66BEPOLIPolarity setting of BE [1:0].
86#ACKOAcnorigge signal when register is accessed.
87#RQOInterrupt output.
62ASYNCIChange of method in host interface.
79MCLKIMain clock.
25#SMUSEIWhen Smart Media is used for slot 2, it is assumed, “0”.
34#FCEOSmart Media chip enable. SD2DAT0 and sharing.
35FCLEOSmart Media command latch enable.
23FALEOSmart Media address latch enable.
24#FREOSmart Media Read enable. SD2DAT0 and sharing.
30#FWEOSmart Media Write enable. SD2DAT1 and sharing.
17, 18, 20,
21, 31, 32,
44, 46
29#FBSYISmart Media Ready/busy input signal.
14#FWPOSmart Media write-protection output signal.
49#EJECTINISmart Media eject demand signal.
56#EJECTOUTOSmart Media eject response signal.
27(#CD2)ISmart Media card detection signal (SD2 and using combinedly).
39#FWPSDISmart Media write-protection seal detection signal (SD2CMD and using combinedly).
DSP interface
57ACCLKOA-CORE clock output (“0” fixed output).
55#ACREQIA-CORE request input (Please input “0” or “1” and stabilize potential).
52ACDATAOA-CORE data output (“0” fixed output).
54ACVALIDOA-CORE effective horsepower (“0” fixed output).
Other
73DIP1IDIP input terminal for debugging.
72DIP0IDIP input terminal for debugging.
71LED3OLED output terminal for debugging. It synchronizes with the LED bit of the SM_MCR register though it is
FD [7:0]I/OSmart Media data. Bit [7:0].
controlled by an internal register.
5 – 57
LC-37D90U
Pin No.Pin NameI/OPin Function
61LED2OLED output terminal for debugging. It is controlled by an internal register and it synchronizes with the
60LED1OLED output terminal for debugging. It is controlled by an internal register and it synchronizes with the
59LED0OLED output terminal for debugging. It is controlled by an internal register and it synchronizes with the
• Pin Function [VHiTPS40055-1Y (ASSY: IC9603, 9606, 9607)]
Pin No.Pin NameI/OPin Function
14BOOSTOGate drive voltage for the high side N-channel MOSFET.
The BOOST voltage is 9V greater than the input voltage.
A 0.1-µF ceramic capacitor should be connected from this pin to the drain of the lower MOSFET.
3BP5O5-V reference.
This pin should be bypassed to ground with a 0.1-µF ceramic capacitor.
This pin may be used with an external DC load of 1mA or less.
11BP10O10-V reference used for gate drive of the N-channel synchronous rectifier.
This pin should be bypassed by a 1-µf ceramic capacitor.
This pin may be used with an external DC load of 1 mA or less.
8COMPOOutput of the error amplifier, input to the PWM comparator.
A feedback network is connected from this pin to the VFB pin to compensate the overall loop.
The comp pin is internally clamped above the peak of the ramp to improve large signal transient response.
13HDRVOFloating gate drive for the high-side N-channel MOSFET.
This pin switches from BOOST (MOSFET on) to SW (MOSFET off).
16ILIMICurrent limit pin, used to set the overcurrent threshold.
An internal current sink from this pin to ground sets a voltage drop across an external resistor
connected from this pin to VCC.
The voltage on this pin is compared to the voltage drop (VIN – SW) across the high side MOSFET
during conduction.
1KFFIA resistor is connected from this pin to VIN to program the amount of voltage feed-forward.
The current fed into this pin is internally divided and used to control the slope of the PWM ramp.
10LDRVOGate drive for the N-channel synchronous rectifier.
This pin switches from BP10 (MOSFET on) to ground (MOSFET off).
9PGND---Power ground reference for the device.
There should be a low-impedance path from this pin to the source(s) of the lower MOSFET(s).
2RTIA resistor is connected from this pin to ground to set the internal oscillator and switching frequency.
5SGND---Signal ground reference for the device.
6SS/SDISoft-start programming pin.
A capacitor connected from this pin to ground programs the soft-start time.
The capacitor is charged with an internal current source of 2.3µA.
The resulting voltage ramp on the SS pin is used as a second non-inverting input to the error amplifier.
The output voltage begins to rise when VSS/SD is approximately 0.85V.
The output continues to rise and reaches regulation when VSS/SD is approximately 1.55V.
The controller is considered shut down when VSS/SD is 125mV or less. All internal circuitry is inactive.
The internal circuitry is enabled when VSS/SD is 210mV or greater.
When VSS/SD is less than approximately 0.85V, the outputs cease switching and the output voltage
(VOUT) decays while the internal circuitry remains active.
12SWIThis pin is connected to the switched node of the converter and used for overcurrent sensing.
4SYNCISyncronization input for the device.
This pin can be used to synchronize the oscillator to an external master frequency.
If synchronization is not used, connect this pin to SGND.
7VFBIInverting input to the error amplifier.
In normal operation the voltage on this pin is equal to the internal reference voltage, 0.7V.
15VINISupply voltage for the device.
LC-37D90U
5 – 61
LC-37D90U
2.19. 95KUCY0273AY (ASSY: IC4701)
HIGH VOLTAGE RESONANT CONTROLLER (E-L6598D13TR)
• Block Diagram [95KUCY0273AY (ASSY: IC4701)]
• Pin Function [95KUCY0273AY (ASSY: IC4701)]
Pin No.Pin NameI/OPin Function
1CSS---Soft Start Timing Capacitor.
2RfstartISoft Start Frequency Setting - Low Impedance Voltage Source - See also Cf.
3Cf---Oscillator Frequency Setting - see also Rfmin, Rfstart.
4RfminIMinimum Oscillation Frequency Setting - Low Impedance Voltage Source - See also Cf.
5OpoutOSense OP AMP Output - Low Impedance.
6OPon-ISense Op Amp Inverting Input - High Impedance.
7OPon+ISense Op Amp Non Inverting Input - High Impedance.
8EN1IHalf Bridge Latched Enable.
9EN2IHalf Bridge Unlatched Enable.
10GND---Ground.
11LVGOLow Side Driver Output.
12Vs---Supply Volatge with Internal Zener Clamp.
13N.C.---Not Connected.
14OUTOHigh Side Driver Reference.
15HVGOHigh Side Driver Output.
16VbootOBootstrapped Supply Voltage.
2.20. 95KUCY0244AY (ASSY: IC5701)
SWITCHING POWER CONTROL (FA5518N-H1-TE1)
• Block Diagram [95KUCY0244AY (ASSY: IC5701)]
• Pin Function [95KUCY0244AY (ASSY: IC5701)]
Pin No.Pin NameI/OPin Function
1CS---Soft start, latch-mode stop.
2FBIInput for controlling current comparator threshold voltage.
3ISIInput for monitoring MOSFET current.
4GND---Power supply ground.
5OUTOOutput for directly driving a MOSFET.
6VCC---Power supply for ICs.
7N.C.---No connection.
8VHIInput terminal for start-up circuit.
5 – 62
MEMO
LC-37D90U
5 – 63
LC-37D90U
LC-37D90U
CHAPTER 6. TROUBLE SHOOTING TABLE
Service Manual
[1] TROUBLE SHOOTING TABLE
<Power Supply>
No power supply (Front LED does not light up) and no power-up even if turned on(Front LED light up to green)
Is the AC power cord plugged in?
NO
YES
Are the harnesses and FFCs tightly connected?
NO
YES
Does F701 function?
NO
YES
Is there a voltage of about 160V at C4701, C4702 and
C4703?NO
YES
Is there the BU5V output?
Plug in the AC power cord and turn on the power.
Connect the harnesses and FFCs tightly.
Replace F701 with new one and turn on the power. If the fuse blows out
again, replace the following parts with new ones and check the fuse
again: VZ701, DS4701, F4701, F4702, F5701, Q4701, Q4702, Q5701,
IC4701 and IC5701.
See if VZ701, R701, R702, R703, DS4701 and TH701 function.
Do the primary and secondary sides of T5701 oscillate as specified?
YES
Are there the UR6V, UR10V and UR13V outputs?
YES
Is there the 24V output?
NO
NO
NO
YESNO
Check F5702, D5705, IC5706 and
D5717 for defects.
Is PS_ON (pin (1) of CN5702) at High (about 3.3V)?
YESNO
Check the UR6V regulator circuit,
UR13V rectifier circuit and UR10V
DC/DC circuit.
Do the primary and secondary sides of T4701 oscillate as specified?
Check the primary-side parts
for defects. See if the secondary output is short-circuited.
Make sure the set is not in
STANDBY MODE2. Check the
main unit for trouble.
6 – 1
YESNO
YES
LC-37D90U
Check D4705 and D4706 for defects.Check the primary-side parts
for defects. See if the secondary output is short-circuited.
Is there the PNL12V output?
NO
YES
Turn on the power again and make sure the set functions
as specified.
(Remarks)
PS_ON
Status of the set
STDBY
MODE1HighHigh5V6V10V13V12V24V
MODE2LowLow5V-----
PowerONHighHigh5V6V10V13V12V24V
(CN5702(1))
PNL_POW
(CN5702(4))
BU5V
(CN5702(5))
Is PNL_POW (pin (4) of CN5702) at High (about 3.3V)?
Check the PNL12V series regulator
circuit.
UR6V
(CN5701(1))
UR10V
(CN5701(7))
UR13V
(CN5701(11))
Check the main unit for trouble.
PNL12V
(CN5701(3))
24V
(CN5703(1))
6 – 2
LC-37D90U
No video (1)
COMPOSITE: No external input video
Is INPUT-1 selected on the input select
menu screen? Is the INPUT-SELECT for
the input signal?
YES
[INPUT-1]
NO
Select INPUT-1 on the input
select menu screen for the
right input signal.
Does the INPUT-1
V1.PLUG detection function?
Check the line between pin
(5) of input terminal (J501)
and pin (70) of IC501
(AV_SWITCH).
COMPOSITE: No external input video
Is INPUT-2 selected on the input select
menu screen with the S terminal open?
YES
[INPUT-2]
NO
Select INPUT-2 on the
input select menu
screen.
Does the INPUT-2
V3.PLUG detection function?
Check the line between
pin (2) of input terminal
(J501) and pin (2) of
IC501 (AV_SWITCH).
S-VIDEO: No external input video [INPUT-2]
Is INPUT-2 selected on the input select menu
screen?
YES
Select INPUT-2 on the input
select menu screen.
Does the INPUT-2 S3.PLUG
detection function?
Check the line between pin (6) of
input terminal (J503) and pin (6)
of IC501 (AV_SWITCH).
NO
Is there the COMPOSITE video signal input
at pin (65) of IC501 (AV_SWITCH)?
NO
Check the line between pin
(4) of J501 and pin (65) of
IC501.
YES
[COMPOSITE signal input] Is there the COMPOSITE video signal output at pin (60) of IC501?Check IC501 and
[S-VIDEO signal input] Is there the video signal output at pins (60)(Y) and (59)(C) of IC501?
[COMPOSITE signal input] Is there the COMPOSITE video signal output at pin (2) of connector (SC501) on the
IF unit?
[S-VIDEO signal input] Is there the video signal output at pins (2)(Y) and (4)(C) of connector (SC501) on the IF
unit?
Is there the COMPOSITE video signal
input at pin (3) of IC501 (AV_SWITCH)?
NO
Check the line between
pin (1) of J501 and pin
(3) of IC501.
YES
YES
Is there the S-VIDEO signal input at pins (5)(Y)
and (7)(C) of IC501 (AV_SWITCH)?
NO
Check the line between pins
(3)(Y)/(4)(C) of J503 and pins
(5)/(7) of J501.
YES
its peripheral cir-
NO
NO
cuits.
Check the line
between IC501 and
SC501 (Q501 thru
Q504, etc.).
YES
[COMPOSITE signal input] Is there the COMPOSITE video signal input at pin (2) of connector (SC1101) on the
main unit?
[S-VIDEO signal input] Is there the video signal input at pins (2)(Y) and (4)(C) of connector (SC1101) on the
main unit?
6 – 3
Check the SC501
and SC1101 connectors.
NO
LC-37D90U
YES
[COMPOSITE signal input] Is there the COMPOSITE video signal input at pins (M4, N4) of IC3301 (VPC)?Check the line
NO
[S-VIDEO signal input] Is there the video signal input at pins (M4, N4)(Y) and (T1)(C) of IC3301 (VPC)?
YES
Is there the LVDS signal output at the LVDS 1st channel and 2nd channel of IC3301?
TA2_P/M(AJ30/AK30), TB2_P/M(AJ29/AK29), TC2_P/M(AJ28/AK28), TD2_P/M(AJ26/AK26), TE2_P/M(AJ25/
AK25), TF2_P/M(AJ24/AK24), TCLK2_P/M(AJ27/AK27), TA1_P/M(AB29/AB30), TB1_P/M(AC29/AC30),
between SC1101
and IC3301 (Q2201
thru Q2203,
Q2205, Q2207.
Q2209, etc.).
Check IC3301 and
its peripheral control circuits
(IC5301, IC5302,
IC8101, etc.).
6 – 4
LC-37D90U
No video (2)
COMPONENT: No external input video
Is INPUT-1 selected on the input select
menu screen? Is the INPUT-SELECT for
the input signal?
YES
[INPUT-1]
NO
Select INPUT-1 on the input
select menu screen for the
right input signal.
Does the INPUT-1 C1.PLUG
detection function?
Check the line between pin (8)
of input terminal (J501) and
pin (38) of IC501
(AV_SWITCH).
No video at UHF/VHF broadcast signal recep-
Is the specified TV signal selected on the input select menu screen?
Is there the analog video signal output at the
output pin (4) of tuner (TU1101)?
YES
tion
NO
Check the tuner, IC8601 (DEMODULATOR) and their peripheral circuits (TUN_SDA/SCL,
Q8601).
No video at digital broadcast signal reception
Is there the video signal output at the output pins
(20) and (21) of tuner (TU1101)?
YES
Check the tuner, IC8601 (DE-MODULATOR) and their peripheral circuits (TUN_SDA/SCL, Q8601).
NO
Is there the COMPONENT video signal
input at pins (21)(Y), (23)(Pb) and (25)(Pr)
of IC501 (AV_SWITCH)?
YES
Check the line between the
input terminals of J501 and
IC501.
Is there the COMPONENT video signal output at pins (60)(Y), (59)(Pb) and (58)(Pr) of
IC501?
YES
Check IC501 and its peripheral circuits.
NO
NO
NONO
Is there the video signal output at pin (5) of
IC1103 (LEVEL_ADJ)?
YES
Does the level adjustment control signal come from pin (6) of
IC1103 to pin (1) of IC1104?
Check IC1104 and its peripheral
circuits. Replace as required.
Is there the CVBS3 signal input at pin (N3) of
IC3301 (VPC)?
NO
NO
Are there the MPEG signal outputs
(US_TS_PKTSYNC, US_TS_EN,
US_TS_DATA, US_TS_CLK) from IC8601?
YES
Check IC8601 and its peripheral
control circuits.
Are there the MPEG signal inputs
(US_TS_PKTSYNC, US_TS_EN,
US_TS_DATA, US_TS_CLK) at IC8101 (CPU/
DECODER)?
YES
Check the line between IC8601 and
IC8101.
NO
NO
YES
NO
6 – 5
LC-37D90U
Is there the COMPONENT video signal output at pins (2), (4) and (6) of connector
(SC501) on the IF unit?
YES
Check the line between IC501
and SC501 (Q501 thru Q506,
etc.).
Is there the COMPONENT video signal
input at pins (2), (4) and (6) of connector
(SC1101) on the main unit?
YES
Check the SC501 and SC1101
connectors.
NO
NO
Check the line between IC1103
and IC3301 (Q2204, Q2208,
etc.).
Are there the MVY[7:0], MVC[7:0] and MVCLK/
MNSYNCO/MVSYNCO signal outputs from
IC8101?
YES
Check IC8101 and its peripheral
circuits.
Are there the MVY[7:0], MVC[7:0] and MVCLK/
MNSYNCO/MVSYNCO signal inputs at IC3301?
YES
Check the line between IC8101 and
IC3301.
NO
NO
Is there the COMPONENT video signal
input at pins (U3)(Y), (AA1)(Pb) and
(W3)(Pr) of IC3301 (VPC)?
YES
Check the line between
SC1101 and IC3301 and their
peripheral circuits (Q2202,
Q2203, Q2206, etc.).
Is there the LVDS signal output at the LVDS 1st channel and 2nd channel of IC3301?
TA2_P/M(AJ30/AK30), TB2_P/M(AJ29/AK29), TC2_P/M(AJ28/AK28), TD2_P/M(AJ26/AK26), TE2_P/M(AJ25/AK25), TF2_P/M(AJ24/AK24),
TCLK2_P/M(AJ27/AK27), TA1_P/M(AB29/AB30), TB1_P/M(AC29/AC30), TC1_P/M(AD29/AD30), TD1_P/M(AF29/AF30), TE1_P/M(AG29/AG30),
TF1_P/M(AH29/AH30), TF1_P/M(AH29/AH30), TCLK1_P/M(AE29/AE30)
Check the panel module.Check IC3301 and its peripheral control cir-
NO
NO
YESNO
cuits (IC5301, IC5302, IC8101, etc.).
6 – 6
LC-37D90U
<HDMI signal input> No video (3)
No external input video [INPUT-3]No external input video [INPUT-4]
Is INPUT-3 selected on the input select menu screen?Is INPUT-4 selected on the input select menu screen?
YES
NO
Select INPUT-3 on the input select menu screen for the
right input signal.
NONO
Does the HOT PLUG detection function?Does the HOT PLUG detection function?
Does the HDMI_HPG3 signal come from pin (18) of connector (SC1501) to pin (69) of IC9101 (CPLD)?
YES
Check the line between SC1501 and IC9101
(CPLD) (Q1506, Q1508, etc.).
NO
YES
Select INPUT-4 on the input select menu screen for the
right input signal.
Does the HDMI_HPG2 signal come from pin (18) of connector (SC1502) to pin (68) of IC9101 (CPLD)?
YES
Check the line between SC1502 and
IC9101 (CPLD) (Q1505, Q1507, etc.).
NO
NO
Does the HDMI_PLG_EN signal come from pin (77) of
IC9101 to pin (44) of IC1508 (HDMI/HDCP/DVI COMPLIANT RECEIVER) and pin (40) of IC1507 (DVI/HDMI
SWITCH)?
YES
Check the line between IC1901 and IC1507/
IC1508.
Does the HDP3 signal come from pin (44) of IC1507 to pin
(19) of SC1501?
Check the line between IC1507 and SC1501.Check the line between IC1507 and
NO
NONO
Does the HDMI_PLG_EN signal come from pin (77) of
IC9101 to pin (44) of IC1508 (HDMI/HDCP/DVI COMPLIANT RECEIVER) and pin (40) of IC1507 (DVI/HDMI
SWITCH)?
YES
Check the line between IC1901 and
IC1507/IC1508.
Does the HDP2 signal come from pin (62) of IC1507 to
pin (19) of SC1502?
SC1502.
NO
6 – 7
LC-37D90U
Does the signal come from connector (SC1501) to the input pins (48 and
49) (CLK±), (51 and 52) (D0±), (54 and 55) (D1±), and (57 and 58)
(D2±), all of IC1507?
YES
Is IC1501 (EEPROM) accessed by I2C, with HDMI connected, to read the DDC_I2C CLOCK/DATA data?
Check the DDC line and its peripheral circuits
(IC1501 (EEPROM) and its peripherals).
Does the signal come from pins (34 and 35) (CLK±), (31 and 32) (D0±), (28 and 29)
(D1±), and (25 and 26) (D2±) of IC1507 to pins (50 and 51), (54 and 55), (58 and 59), and
(62 and 63) of IC1508?
Are there the U3VINY[7:0], U3VINR[7:0], U3VINPBPR[7:0], U3VDIN, U3HDIN, U3DEIN
and U3VINCLK signal outputs from IC1508?
NO
NONO
YES
Does the signal come from connector (SC1502) to the input pins (67
and 68) (CLK±), (70 and 71) (D0±), (73 and 74) (D1±), and (76 and 77)
(D2±), all of IC1507?
YES
NO
Is IC1502 (EEPROM) accessed by I2C, with HDMI connected, to read the DDC_I2C CLOCK/DATA data?
Check the DDC line and its peripheral circuits (IC1502 (EEPROM) and its peripherals).
Check IC1507, IC1508 and their periph-
NO
NO
eral circuits.
Check IC1508 and its peripheral circuits.
YES
Are there the U3VINY[7:0], U3VINR[7:0], U3VINPBPR[7:0], U3VDIN, U3HDIN, U3DEIN
and U3VINCLK signal inputs at IC3301 (VPC)?
YES
Is there the LVDS signal output at the LVDS 1st channel and 2nd channel of IC3301?
TA2_P/M(AJ30/AK30), TB2_P/M(AJ29/AK29), TC2_P/M(AJ28/AK28), TD2_P/M(AJ26/
AK26), TE2_P/M(AJ25/AK25), TF2_P/M(AJ24/AK24), TCLK2_P/M(AJ27/AK27), TA1_P/
Check IC3301 and its peripheral control
circuits (IC5301, IC5302, IC8101, etc.).
6 – 8
LC-37D90U
<DVI signal input> No video (4)
No external digital input video [INPUT-5]No external analog input video [INPUT-5]
Is INPUT-5 selected on the input select menu screen?Is INPUT-5 selected on the input select menu screen?
YES
NONO
Select INPUT-5 on the input select menu screen for
the right input signal (AUTO or DIGITAL).
NONO
Does the HOT PLUG detection function? Does the HDMI_HPG1 signal come from pin (14) of DVI connector
(SC1503) to pin (67) of IC9101 (CPLD)?
YES
Does the HDMI_PLG_EN signal come from pin (77) of IC9101 to pin (44) of IC1508 (HDMI/HDCP/DVI COMPLIANT
RECEIVER) and pin (40) of IC1507 (DVI/HDMI SWITCH)?
Select INPUT-5 on the input select menu screen for the
right input signal (AUTO or ANALOG).
NO
Check the line between SC1503 and IC9101 (CPLD)
(Q1501, Q1502, etc.).
YES
YES
Does the HDP1 signal come from pin (80) of IC1507 to pin (16) of SC1503?
Does the signal come from DVI connector (SC1503) to the input
pins (5 and 6) (CLK±), (8 and 9) (D0±), (11 and 12) (D1±), and (14
and 15) (D2±), all of IC1507?
YES
NONO
NO
Check the line between IC1901 and IC1507/IC1508.
NO
Check the line between IC1507 and SC1503.
Do the DVI_PC_R/G/B and DVI_PC_VD/HD signals come from HDMI
connector (SC1503) to the input pins of IC3301 (Q1509 thru Q1511,
IC1503, etc.)?
YES
6 – 9
Is IC1505 (EEPROM) accessed by I2C, with DVI connected, to read the DDC_I2C CLOCK/DATA data?
Does the signal come from pins (34 and 35) (CLK±), (31 and 32)
(D0±), (28 and 29) (D1±), and (25 and 26) (D2±) of IC1507 to pins
(50 and 51), (54 and 55), (58 and 59), and (62 and 63) of IC1508?
LC-37D90U
NO
Check the DDC line and its peripheral circuits (IC1505
(EEPROM) and its peripherals).
YES
Check IC1507, IC1508 and their peripheral circuits.
Are there the U3VINY[7:0], U3VINR[7:0], U3VINPBPR[7:0], U3VDIN, U3HDIN,
U3DEIN and U3VINCLK signal outputs from IC1508?
YES
Check IC1508 and its peripheral circuits.
Are there the U3VINY[7:0], U3VINR[7:0], U3VINPBPR[7:0], U3VDIN, U3HDIN,
U3DEIN and U3VINCLK signal inputs at IC3301 (CPU_H8)?
YES
Check the line between IC1508 and IC3301.
NO
NO
NO
Is there the LVDS signal output at the LVDS 1st channel and 2nd channel of IC3301?
TA2_P/M(AJ30/AK30), TB2_P/M(AJ29/AK29), TC2_P/M(AJ28/AK28), TD2_P/M(AJ26/AK26), TE2_P/M(AJ25/AK25), TF2_P/M(AJ24/AK24),
TCLK2_P/M(AJ27/AK27), TA1_P/M(AB29/AB30), TB1_P/M(AC29/AC30), TC1_P/M(AD29/AD30), TD1_P/M(AF29/AF30), TE1_P/M(AG29/AG30),
TF1_P/M(AH29/AH30), TF1_P/M(AH29/AH30), TCLK1_P/M(AE29/AE30)
YESNO
Check the panel module.Check IC3301 and its peripheral control circuits (IC5301,
IC5302, IC8101, etc.).
6 – 10
LC-37D90U
No audio (1)[With HDMI connected] No audio (2)
[Audio signal] INPUT-1 No audio
[Audio signal] INPUT-2 No audio
[INPUT-1 input]
Is INPUT-1 selected on the input select menu
screen?
[INPUT-2 input]
Is INPUT-2 selected on the input select menu
screen?
YES
Is the audio output selected for
“VARIABLE” on the menu
screen?
Set the audio output to “FIXED”.Set the audio output to “FIXED”.Set the audio output to
NO
YESYESYES
[Audio signal] INPUT-4 No audio (HDMI analog
[Audio signal] INPUT-5 No audio (DVI analog
[HDMI analog input]
Is INPUT-4 selected on the input select menu
screen?
[DVI analog input]
Is INPUT-5 selected on the input select menu
screen?
YES
Is the audio output selected for “VARIABLE” on the menu screen?
input)
input)
NO
[Audio signal] INPUT-3 No audio (HDMI
[Audio signal] INPUT-4 No audio (HDMI
[INPUT-3 input] Is INPUT-3 selected on
the input select menu screen?
[INPUT-4 input] Is INPUT-4 selected on
the input select menu screen?
YES
connected)
connected)
NO
Is the audio output selected
for “VARIABLE” on the menu
screen?
“FIXED”.
[INPUT-1] Does the audio signal come from
pins (12)(L) and (18)(R) of input terminal
(J501) to pins (4)(L) and (2)(R) of connector
(SC502) on the IF unit?
[INPUT-2] Does the audio signal come from
pins (10)(L) and (16)(R) of input terminal
(J501) to pins (12)(L) and (10)(R) of connector (SC502) on the IF unit?
YES
Check the audio signal from
J501 to SC502, and their
peripheral circuits.
[INPUT-1] Is there the audio signal input at
pins (4)(L) and (2)(R) of connector (SC1102)
on the main unit?
[INPUT-2] Is there the audio signal input at
pins (12)(L) and (10)(R) of connector
(SC1102) on the main unit?
NO
[HDMI analog input] Does the audio signal come
from input terminal (J1501) to pins (59)(L) and
(60)(R) of IC1403?
[DVI analog input] Does the audio signal come
from input terminal (J1502) to pins (55)(L) and
(56)(R) of IC1403?
YES
(HDMI analog input)
Check the line between J1501 and
IC1403, and their peripheral circuits.
(DVI analog input)
Check the line between J1502 and
IC1403, and their peripheral circuits.
NOYES
[INPUT-3] If no video appears, refer to “No
external input video (HDMI) [INPUT-3]”.
[INPUT-4] If no video appears, refer to “No
external input video (HDMI) [INPUT-4]”.
Is the SII9011_MUTE line as specified?
YES
Check Q1301, IC1303 and
their peripheral circuits.
Does the HDMI_SPDIF signal come from
pin (70) of IC1508 to pin (2) of IC1403
(CODEC)?
NO
YES
NO
6 – 11
Check the SC502 and SC1102
connectors.
[INPUT-1] Does the audio signal come from
pins (2) and (4) of SC1102 to pins (53)(L) and
(54)(R) of IC1403 (CODEC)?
[INPUT-2] Does the audio signal come from
pins (10) and (12) of SC1102 to pins (57)(L)
and (58)(R) of IC1403 (CODEC)?
YES
Check the line between
IC1508 and IC1403 and their
peripheral circuits.
No audio in all modes (3)
LC-37D90U
NO
YES
Check the line between SC1102
and IC1403 and their peripheral
circuits.
Is there the audio signal output at pins (38)(L) and (39)(R) of IC1403?
YES
Is there the audio signal output at pins (8)(L) and (11)(R) of connector
(SC1301) on the main unit?
YES
Is there the audio signal input at pins (8)(L) and (11)(R) of connector
(P2704) on the IF unit?
YES
Is there the audio signal input at pins (11)(L) and (15)(R) of IC2701
(STEREO_AMP)?
NO
NO
NO
NO
NO
Check IC1403 and its peripheral circuits.
Check the line between IC1407 and SC1301.
Check the SC1301 and P2704 connectors.
Check the line between P2704 and IC2701, and their
peripheral circuits (MUTE circuit: Q2701 and AMP_MUTE
line)
YES
Is the audio output from IC2701 as specified?
YES
Does the speaker select relay (T2701) function?
YES
Check the connector (P2703), speakers and their peripheral circuits.
NO
NO
6 – 12
Check IC2701 and its peripheral circuits.
Check the SP-RELAY line and its peripheral circuits (Q2702
and SP-RELAY line).
LC-37D90U
No audio (4)
No audio at digital broadcast
signal reception
YES
Move the sound volume key.
Does the volume icon indicate
the speakers?
NONO
Are there the IF_OUT_N and
IF_OUT_P signal outputs at
pins (20) and (21) of tuner
(TU1101)?
YESYES
Are there the IF_OUT_N and
IF_OUT_P signal inputs at
pins (10) and (11) of IC8601
(DEMODULATOR)?
YESYES
Do the US_TS_CLK/DATA/
EN/PKTSYNC signals come
from pins (51, 59, 63 and 66)
of IC8601 to pins (D11, A9,
C10, B10) of IC8101 (CPU/
DECODER)?
YES
NO
NO
NO
Set the audio output to
“FIXED”.
Check the tuner (TU1101)
and its peripheral circuits.
Replace as required.
Check the line between
tuner (TU1101) and
IC8601, and their peripheral circuits (filter circuit,
etc.).
Check the line between
IC8601 and IC8101, and
their peripheral circuits.
No audio at UHF/VHF broad-
cast signal reception
Is the audio output selected for
“VARIABLE” on the menu
screen?
Is there the SIF signal output
at pin (3) of tuner (TU1101)?
Is there the SIF signal input at
pins (21) of IC1401
(SIF_DECODER)?
Are the audio signal outputs at
pins (30)(L) and (29)(R) of
IC1401?
YES
Are the audio signal inputs at
pins (51)(L) and (52)(R) of
IC1403?
YES
NO
NO
NO
NO
Set the audio output to
“FIXED”.
Check the tuner
(TU1101) and its
peripheral circuits.
Replace as required.
Check the line
between tuner
(TU1101) and IC1401,
and their peripheral
circuits (Q1102,
Q1103, etc.).
Check IC1401
(SIF_DECODER) and
its peripheral circuits.
Replace as required.
Check the line
between IC1401 and
IC1403, and their
peripheral circuits.
YES
Is the communication
between IC8101 and IC8801
(DAC) as specified?
(DTV_I2SMCLK/
DTV_I2SCLK/
DTV_I2SLRCK)?
YES
Are the DTV_L/R audio signal
outputs at pins (19)(L) and
(18)(R) of IC8801 (DAC)?
YES
NO
NO
Check the line between
IC8101 and IC8801, and
their peripheral circuits.
Check IC8801 and its
peripheral circuits.
YES
6 – 13
LC-37D90U
Are the audio signal inputs at
pins (61)(L) and (62)(R) of
IC1403?
YES
Are the audio signal outputs
at pins (38)(L) and (39)(R) of
IC1403?
YES
Are the audio signal outputs
at pins (8)(L) and (11)(R) of
connector (SC1301) on the
main unit?
YES
Are the audio signal inputs at
pins (8)(L) and (11)(R) of con-
nector (P2704) on the IF unit?
NO
NO
NO
NO
Check the line between
IC8801 and IC1403, and
their peripheral circuits.
Check IC1403 and its
peripheral circuits.
Check the line between
IC1407 and SC1301, and
their peripheral circuits.
Check the SC1301 and
P2704 connectors.
YES
Are the audio signal inputs at
pins (11)(L) and (15)(R) of
IC2701 (STEREO_AMP)?
YES
Is the audio output from
IC2701 as specified?
YES
Does the speaker select relay
(T2701) function?
YES
Check the P2703 connector,
speakers and their peripheral
circuits.
NO
NO
NO
Check the line between
P2704 and IC2701, and
their peripheral circuits
(MUTE circuit: Q2701 and
AMP_MUTE line).
Check IC2701 and its
peripheral circuits.
Check the SP-RELAY line
and its peripheral circuits
(Q2702 and SP-RELAY
line).
6 – 14
LC-37D90U
No audio signal at DIGITAL AUDIO OUTPUT terminal (Analog sound heard)
No INPUT-3/4 (HDMI) audioNo audio at digital broadcast signal reception
If no video appears, refer
to “No external input video
(HDMI) [INPUT-3/4]”.
Is the SII9011_MUTE line
as specified?
YESYES
Does the HDMI_SPDIF
signal come from pin (70)
of IC1508 to pin (2) of
IC1403 (CODEC)?
YES
NO
NO
Check Q1301, IC1303
and their peripheral circuits.
Check the line between
IC1508 and IC1403 and
their peripheral circuits.
Are there the IF_OUT_N
and IF_OUT_P signal outputs at pins (20) and (21) of
tuner (TU1101)?
YES
Are there the IF_OUT_N
and IF_OUT_P signal
inputs at pins (10) and (11)
of IC8601 (DEMODULATOR)?
Do the US_TS_CLK/DATA/
EN/PKTSYNC signals
come from pins (51, 59, 63
and 66) of IC8601 to pins
(D11, A9, C10, B10) of
IC8101 (CPU/DECODER),
respectively?
YES
Is the DTV_SPDIF signal
output at pin (R33) of
IC1801?
NO
NO
NO
NO
Check the tuner
(TU1101) and its
peripheral circuits.
Replace as required.
Check the line
between tuner
(TU1101) and IC8601,
and their peripheral
circuits (filter circuit,
etc.).
Check the line
between IC8601 and
IC8101, and their
peripheral circuits.
Check IC8101 and its
peripheral circuits.
Is there the SPDIF signal
output at pin (23) of
IC1403 (CODEC)?
YES
Is there the SPDIF signal
input at pin (1) of IC1408
(SPDIF_FUFF.)?
NO
NO
Check IC1403 and its
peripheral circuits.
Check the line between
IC1403 and IC1408 and
their peripheral circuits.
YES
YESIs the DTV_SPDIF signal
input at pin (5) of IC1403?
YES
6 – 15
NO
No monitor audio
Check the line
between IC8101 and
IC1403, and their
peripheral circuits.
LC-37D90U
YES
Is there the MUTE signal
input at pin (2) of IC1408?
YES
Is there the SPDIF signal
input at pin (1) of DIGITAL
AUDIO OUTPUT terminal
(D1402)?
NO
NO
Check the
MUTE_A_ALL and
ACDET_MUTE signals.
Check IC1402 and its
peripheral circuits.
Replace as required.
No optical output under
the following conditions
as per HDMI requirements.
* Audio contents protected
* Audio frequency
beyond 48 KHz
* Audio bit length
beyond 16 bits
Is the audio output from the
monitor set at “VARIABLE”
or “FIXED” on the menu
screen?
YES
Are the audio signal outputs
at pins (40)(L) and (41)(R)
of IC1403?
YES
Are the audio signal inputs
at pins (3)(L) and (4)(R) of
IC1407 (BUFF_AMP.)?
YES
Are the audio signal outputs
at pins (1)(L) and (7)(R) of
IC1407?
NO
NO
NO
NO
Check the bus line
(SCL0/SDA0_5) and
IC1403. Replace as
required.
Check IC1403 and its
peripheral circuits.
Replace as required.
Check the line
between IC1403 and
IC1407, and their
peripheral circuits.
Check IC1407 and its
peripheral circuits.
Replace as required.
YES
Are the audio signal outputs
at pins (16)(L) and (14)(R)
of connector (SC1102) on
the main unit?
YES
Are the audio signal inputs
at pins (16)(L) and (14)(R)
of connector (SC502) on
the IF unit?
YES
Check the signal up to the
monitor audio output termi-
nal (J502).
NO
NO
NO
Check the line
between IC1407 and
SC1102, and their
peripheral circuits.
Check the SC1102
and SC502 connectors.
Check the MUTE.R
line (Q507 thru Q509,
etc.)
6 – 16
LC-37D90U
LED flashing timing chart for error notification.
1) Red power LED Remarks
Error typePower red LED operation (1 cycle)Pins are microprocessor pins.
Lamp failure
Flashes once: Fast L: Off
Power failure
Flashes twice
Communication failure with main CPU
Flashes 3 times
Vsync
IC3301 operation failure.
Flashes 4 times
Panel temperature failure
Flashes 5 times
250ms 1sec
H: On
L: Off
H: On
L: Off
H: On
L: Off
H: On
L: Off
H: On
L: Off
ERR_PNL (pin 73 of IC2002): Abnormal L. Confirmed after 5
consecutive detections at 1 second intervals (detected only
when the backlight is on). Note that after five detection
counts, the lamp cannot be activated except in the monitoring
process. (For the first time, only the inverter is reset, and error
OFF is not activated) Accumulated counts are cleared to 0
when the corresponding setting in the process is made, when
the power is turned on with [CH_DOWN] and [VOL_UP] on
the unit down or after continuous illumination for 3 minutes.
Refer to “Power failure details”.
Refer to “Communication failure details”.
Communication line failure or main CPU communication failure.
VSYNC (pin 48 of IC2002) failure (uninput). IC3301 operation
failure.
Detected during operation (interruption).
If the panel temperature is 60°C or more for 15 seconds or
more in a row, CAUTION appears on the OSD (flashes in red
in the lower right screen). If the panel temperature is 60°C or
more for 25 seconds or more in a row, error standby is activated.
2) Power failure details (Power LED flashes twice and OPC LED flashes)
Error typePower red LED operation (1 cycle)Pins are microprocessor pins unless otherwise specified.
PS_ON
UR+13V/UR+10V failure
Flashes once
EU_POW
D3.3V failure
Flashes twice
D_POW
UR+6V failure
Flashes 3 times
PANEL_POW
Panel 12V failure
Flashes 5 times
Main failure
Flashes 7 times
3) Communication failure details (Power LED flashes 3 times and OPC LED flashe
Error typePower red LED operation (1 cycle)
Initial communication
reception failure
Flashes once
H: On
L: Off
H: On
L: Off
H: On
L: Off
H: On
L: Off
H: On
L: Off
H: On
L: Off
AC_DET (pin 31 of IC2002): Abnormal (L), DET_10V (pin 63
of IC2002). UR+10V is not applied.
If error is detected during operation, the power is turned on
again by interrupt handling (instantaneous blackout processing).
DET_3V3 (pin 64 of IC2002): Abnormal (L). D3.3V is not
applied (IC9602).
If error is detected during operation, error standby is activated
by polling.
DET_6V (pin 27 of IC2002): Abnormal (L). UR+6V is not
applied.
If error is detected during operation, error standby is activated
by polling.
DET_PNL12V (pin 57 of IC2002): Abnormal (L). Panel power
is not applied.
If error is detected during operation, error standby is activated
by polling.
Main microprocessor (IC8101) detection error (FAN error,
etc.)
The details are displayed in “ERROR STANDBY CAUSE” for
the main microprocessor.
Initial communication from the main CPU is not received.
(After cancelling the reset, request for the monitor model No.
is not received.)
Communication line failure or main CPU start-up failure.
Basically, communication logs are analyzed by a bus
Basically, communication logs are analyzed by a bus
monitor or debug print logs are analyzed.
Time-out setting and start-up mode change cannot be
received from the main CPU. (Start-up communication until
time-out setting and start-up mode change is not received.)
Main CPU start-up failure or monitor microprocessor's reception failure.
Regular communication that is performed at 1 second intervals in the normal operation is interrupted.
Main CPU operation failure or monitor microprocessor's
reception failure.
6 – 18
LC-37D90U
LC-37D90U
CHAPTER 7. OVERALL WIRING/BLOCK DIAGRAM
Service Manual
[1] OVERALL WIRING DIAGRAM
H
G
F
E
D
C
B
A
12345678910
7 – 1
LC-37D90U
10111213141516171819
7 – 2
LC-37D90U
[2] SYSTEM BLOCK DIAGRAM
H
G
F
E
D
C
B
A
12345678910
7 – 3
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