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SERVICE MANUAL
#########
LCD COLOR TELEVISION
MODEL LC-20S5E-BK
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
Page
· SERVICING NOTICES ON CHECKING .............................................................................. A1-1
· HOW TO ORDER PARTS .................................................................................................... A1-1
· IMPORTANT ......................................................................................................................... A1-1
· HOTEL MODE FUNCTION .................................................................................................. A1-2
· ABOUT LEAD FREE SOLDER (PbF) .................................................................................. A1-3
· GENERAL SPECIFICATIONS .............................................................................................. A2-1~A2-5
· DISASSEMBLY INSTRUCTIONS ........................................................................................ B1-1~B2-2
· SERVICE MODE LIST .......................................................................................................... C-1
· WHEN REPLACING EEPROM (MEMORY) IC .................................................................... C-2
· RE-WRITE FOR DIGITAL SOFT FIRMWARE ..................................................................... C-3
· ELECTRICAL ADJUSTMENTS ............................................................................................ D-1~D-4
· TROUBLESHOOTING GUIDE ............................................................................................. E-1~E-7
· BLOCK DIAGRAM ................................................................................................................ F-1~F-8
· PRINTED CIRCUIT BOARDS .............................................................................................. G-1~G-8
· SCHEMATIC DIAGRAMS .................................................................................................... H-1~H-24
· WAVEFORMS ...................................................................................................................... I-1~I-3
· MECHANICAL EXPLODED VIEWS ..................................................................................... J-1~J-3
· REPLACEMENT PARTS LIST ............................................................................................. K1-1~K2-10
This document has been published to be used for
SHARP CORPORATION after sales service only.
The contents are subject to change without notice.
HOTEL MODE FUNCTION
The following can be set by the Hotel mode function.
Setting item FUNCTION
Hotel mode ON/OFF setting for Hotel mode function.
Power on fixed Effective/invalid setting of POWER button on the set and remote cotrol. (*Note 1)
Maximum volume Setting of the maximum volume value (1~50).
Volume fixed Effective/invalid setting of volume fix level function. (*Note 2)
Volume fix level Setting of output volume value.
RC button Effective/invalid setting of remote control key operation. (*Note 3)
Panel button Effective/invalid setting of main key operation. (*Note 4)
Menu button Effective/invalid setting of menu key operation of set and remote cotrol. (*Note 4)
On Screen Display Display/non-display setting of analog menu, CALL, CH, audio, backlight, and volume level. (*Note 5)
Input mode start Setting of input source at power supply On.
Input mode fixed During the power on, effective/invalid setting of tuning the channel and input change operation. (*Note 6)
Reset Various settings of the Hotel mode function return initial State.
Note 1) When setting it to "Fixed", the Sleep timer setting is turned off.
Note 2) When setting it to "Fixed", the VOL+/- key operation of a main/ remote control and the MUTE key operation of a
remote control become invalid.
Note 3) When setting it to "Fixed", the remote control operation and the service mode function in Hotel mode are effective.
Note 4) When setting it to "Fixed", the service mode function in Hotel mode are effective.
Note 5) The Sleep timer setting is turned off when setting it to "No", and the audio change with AUDIO key is invalid.
Note 6) The Input mode fixed setting becomes effective when the Input mode start setting except for " Normal" setting.
To set the Hotel mode, please follow the steps below.
1. In power off mode, press and hold the `VOLUME +' button on the front panel. Hotel Mode
2. Simultaneously press and hold the ` ' button on the front panel.
Password ---
3. Hold both keys, press the POWER button on the front panel.
4. The password screen is displayed.
5. Press it in order of `0', `2' and `7' key of a remote control unit.
Then press the ENTER button.
6. The Hotel mode setting menu will appear.
7. Using the LEFT/RIGHT on the remote control, set the Hotel Lock to on.
8. Turn off the power.
The Hotel Lock has now been set up.
Hotel Mode
To release the Hotel mode, please follow the steps below. Hotel mode Off
Power on fixed Variable
1. In power off mode, press and hold the `VOLUME+' button on the front panel. Maximum volume 50
2. Simultaneously press and hold the ` ' button on the front panel. Volume fixed Variable
3. Hold both keys, press the POWER button on the front panel. Volume fixe level 22
RC button Respond
4. The password screen is displayed. Panel button Respond
5. Press it in order of `0', `2' and `7' key of a remote control unit.
Then press the ENTER button.
6. The Hotel mode setting menu will appear.
7. Using the LEFT/RIGHT on the remote control, set the Hotel Lock to off.
8. Turn off the power.
The Hotel Lock has now been cleared.
NOTE: When the `Power on fixed` is set to `fixed', press and hold the
Hotel Mode
`VOLUME +' button and ` ' button on the front panel simultaneously.
Hold both keys, press the POWER button on the front panel, the power
Menu button Respond
is turned off. On Screen Display Yes
Then follow steps 1~8. Input mode start 1
Input mode fixed Variable
Reset
A1-2
ABOUT LEAD FREE SOLDER (PbF)
Distinction of PbF PCB:
PCBs (manufactured) using lead free solder will have a PbF printing on the PCB.
(Please refer to figures.)
Caution:
· Pb free solder has a higher melting point than standard solder;
Typically the melting point is 86°F~104°F(30°C~40°C) higher.
Please use a soldering iron with temperature control and adjust it to 650°F ± 20°F (350°C ± 10°C).
In case of using high temperature soldering iron, please be careful not to heat too long.
· Pb free solder will tend to splash when heated too high (about 1100°F/ 600°C).
· All products with the printed circuit board with PbF printing must be serviced with lead free solder.
When soldering or unsoldering, completely remove all of the solder from the pins or solder area,
and be sure to heat the soldering points with the lead free solder until it melts sufficiently.
Recommendations
Recommended lead free solder composition is Sn-3.0Ag-0.5Cu.
A1-3
GENERAL SPECIFICATIONS
G-1 TV LCD LCD Size / Visual Size 19.7 inch / 500.3mmV
System LCD Type Color TFT LCD
Number of Pixels 640(H) x 480(V)
View Range Left/Right 85/85 degree
Up/Down 85/85 degree
Color System PAL, SECAM
Speaker 2 Speaker
Position Front
Size 1.2 x 2.8 inch
Impedance 8 ohm
Sound Output MAX 2W + 2W
10%(Typical) ---
AV Input Receivable NTSC3.58 Yes
NTSC4.43 Yes
PAL60Hz Yes
G-2 Tuning Broadcasting System Analog CCIR, French System B/G D/K I/I SECAM L/L'
System Digital -
Tuner and System 1Tuner
Receive CH Destination IR. + UK + CCIR Hyper + France CATV
CH Coverage IreE2~E4, X~Z+2, S1~S10, E5~E12, S11~S41, E21~E69
Intermediate Frequency PAL BG / PAL II / PAL DK, SECAM L / SECAM L' (VL)
Analog Picture(FP) 38.9 / 38.9 / 38.9 / 33.9 MHz
Sound(FS) 33.4 / 32.9 / 32.4 / 40.4 MHz
FP-FS 5.5 / 6.0 / 6.5 / 6.5 MHz
Digital -
ATS Area Setting Germany
Auto Tuning Method ALL Band (Not CCIR CH Plan)
Preset CH Analog 99
Digital -
Stereo/Dual TV Sound Nicam/A2 Dual
Tuner Sound Muting Yes
G-3 Power Power Source AC 220~240V AC 50/60Hz
DC ---
Power Consumption at AC 74W at AC 230V 50Hz
at DC ---
Stand by (at AC) 1W
Per Year --- kWh/Year
Protector Power Fuse Yes
Safety Circuit Yes
IC Protector (Micro Fuse) Yes
G-4 Regulation Safety CE(EN60065:2002), SEMKO
Radiation CE
X-Radiation ---
G-5 Temperature Operation 0oC ~ +40oC
Storage -20oC ~ +60oC
G-6 Operating Humidity 35%RH ~ 75% RH
G-7 OSD Language English, Spanish, German, French, Italian,
Swedish, Dutch, Russian, Portuguese,
Turkish, Greek, Finnish, Polish
G-8 Clock and Sleep Timer Max Time 120 Min
Timer Step 30 Min
On/Off Timer Program(On Timer / Off Timer) No
Wake Up Timer No
EPG Timer Digital tuner only No
Timer Back-up (at Power Off Mode) more than -- Min Sec
A2-1
GENERAL SPECIFICATIONS
G-9 Remote Unit RC-NB
Control Glow in Dark Remocon No
Remocon Format SHARP
Format SHARP
Custom Code 10000 / 10001 / 01111
Power Source Voltage(D.C) 3V
UM size x pcs UM-3 x 2 pcs
Total Keys 40
Keys Standby/On Yes
BACKLIGHT Yes
Mute Yes
1 Yes
2 Yes
3 Yes
4 Yes
5 Yes
6 Yes
7 Yes
8 Yes
9 Yes
0 Yes
Flashback Yes
Input select Yes
Volume up Yes
Volume down Yes
Channel up Yes
Channel down Yes
WIDE MODE Yes
Sound Mode Yes
Display information Yes
SLEEP Yes
Teletext Yes
MENU Yes
UP Yes
LEFT Yes
OK / Channel list Yes
RIGHT Yes
DOWN Yes
END Yes
TOP/BOTTOM/FULL Yes
REVEAL Yes
HOLD Yes
SUBTITLE Yes
SUBPAGE Yes
RED Yes
GREEN Yes
YELLOW Yes
BLUE Yes
A2-2
GENERAL SPECIFICATIONS
G-10 Features Auto Power Off (Auto Shut Off) Yes
BBE No
Auto Search Yes
Sort (CH Allocation) Yes
Rotate No
Clock (Digital only) No
Just Clock Function No
Game Position No
CH Label Yes
T'Text Yes
Text type Fastext (FLOF) / Toptext
English, French, Swedish, Hungarian, Turkish, German,
Portuguese, Spanish, Italian, Greek, Slovakian, Russian,
Text Language
Polish, Czech, Rumanian, Estonian, Lettish, Lithuanian,
Ukrainian, Croatian, Slovenian, Latvian
Subtitle Yes
Top Over View (Analog teletext only) No
Picture size Yes
Position (Picture Scroll) No
Surround Yes
Backlight Yes
Power On Memory Yes
Auto Set Up (Fast installation) Auto tuning (Analog tuner) Yes
CH sort Yes
ATS Yes
Auto clock (Analog tuner) No
Plug in start (Analog tuner) Yes
Picture Setting (TV) Brightness , Contrast , Color Yes
Tint Yes
Sharpness Yes
Black Stretch Yes
Backlight Yes
Picture Preference (AV Mode) Yes
Color Temperature Yes
DNR Yes
Picture Setting (PC) Brightness , Contrast Yes
Color Temperature Yes
Sound Setting Tone Control (Bass/Treble/Balance) Yes
Sound via No
Auto Vol Yes
Clear Voice Yes
Sound wide Yes
Lock Hotel Lock Yes
Child Lock Yes
PC Monitor Input Yes
VGA (640x480) Yes (60Hz)
VGA (720x400) No
WVGA (848x480) No
SVGA (800x600) Yes (60Hz)
XGA (1024x768) Yes (60Hz)
WXGA (1280x768) No
WXGA (1280x720) No
WXGA (1360x768) No
SXGA (1280x1024) No
Variable Audio Out No
Freeze frame No
Choke Coil No
Rec Screen Status No
Digital Text (VBI teletext) No
MHEG-5 No
MHP No
EPG (BBC type 8Days Digital tuner only) No
OAD (Over Air Download) (UK only) No
Common Interface (Digital tuner only) No
LCN Renumber No
Country select (Digital Only) No
Ch sorting based on Ch List (Digital/Germany only) No
Ch Allocation (Digital) No
Favorite Ch (Digital) No
Rename Service/Carrier (Digital) No
A2-3
GENERAL SPECIFICATIONS
G-11 Accessories Owner's Manual Language English, German, French, Italian, Dutch, Spanish
Greek, Portuguese, Swedish, Finnish, Danish
Norwegian, Polish, Hungarian, Czech, Slovak, Ukrainian
w/Guarantee Card No
Remote Control Unit Yes
Rod Antenna
Poles -
Terminal -
Loop Antenna (W/ Antenna Change Plug)
Terminal -
U/V Mixer No
DC Car Cord (Center+) -
Guarantee Card No
Warning Sheet No
Circuit Diagram No
Antenna Change Plug No
Service Facility List No
Important Safeguard No
Dew/AHC Caution Sheet -
Quick Set-up Sheet No
Battery Yes
UM size x pcs UM-3 x 2 pcs
OEM Brand No
AC Adapter -
AC Cord (for AC Adapter) -
AC Cord Yes
AV Cord (2Pin-1Pin) No
Registration Card No
Information Sheet(WEEE) No
300 ohm to 75 ohm Antenna Adapter No
Cable Clamp (x1) Yes
Information Sheet(Eco Sheet) Yes
A2-4
GENERAL SPECIFICATIONS
G-12 Interface Switch Side Sub Power (Tact) Yes
System Select No
Main Power SW No
Sub Power (Push) No
Channel Up/Menu Up Yes
Channel Down/Menu Down Yes
Volume Up/Menu > Yes
Volume Down/Menu < Yes
Input Select Yes
Menu Yes
Indicator Power No
Stand-by No
Power / Stand-By Yes (Green / Red)
On Timer No
OPC No
Terminals Rear Video Output No
Color Stream 2 No
Diversity No
Ext Speaker No
DC Jack 12V (Center +) No
Bottom VHF/UHF Antenna Input DIN x1
AC Inlet Yes
Audio Output (L, R) RCA x2 (Fix)
Other Terminal RS-232C x1
Euro Scart (21Pin) EXT1 Yes (CVBS In, RGB In, Tuner Out)
Euro Scart (21Pin) EXT2 Yes (CVBS In, Y/C In, Video Out)
PC Monitor Input (D-Sub) Yes
Audio Input (Mini Pin) Yes
Side CI Card slot No
Audio Input No
Video Input EXT3 RCA x1
Audio Input EXT3 (L/Mono, R) RCA x2 (L/MONO,R White,Red)
S Video Input EXT3 S-Jack x1
Other Terminal Headphone x1
Front Other Terminal No
G-13 Set Size Approx. W x D x H (mm) 483 x 225 x 435
w/o Stand, Handle Approx. W x D x H (mm) 483 x 96 x 399.5
G-14 Weight Net Approx. 7.4kg
Gross Approx. 10.4kg
G-15 Carton Master Carton No
Content ----
Material --
Dimensions W x D x H(mm) -- x -- x --
Description of Origin No
Gift Box Material Double/Brown
Dimensions W x D x H(mm) 588 x 313 x 542
Description of Origin Yes (Made in Japan)
Drop Test Natural Dropping At 1 Corner /
3 Edges / 5 Surfaces
Height (cm) 48
Container Stuffing 556
w/Pallet Yes
w/Wrapping No
G-16 Material Cabinet Cabinet Front PC+ABS 94V-0 Non-Halogen
Cabinet Rear PC+ABS 94V-0 Non-Halogen
PCB Non-Halogen No
Eyelet Yes
G-17 Environment Environmental standard requirement (by buyer) Green procurement of SHARP
Pb-free Phase3 (Phase3A)
Measures for Whisker Yes
WEEE Yes
A2-5
DISASSEMBLY INSTRUCTIONS
1. REMOVAL OF MECHANICAL PARTS 1-3: OPERATION PCB (Refer to Fig. 1-3)
AND P.C. BOARDS 1. Disconnect the following connectors:
(CP301 and CP4201).
1-1: COVER BACK/STAND ASS'Y (Refer to Fig. 1-1)
2. Remove the 2 screws 1.
1. Unlock the 2 supports 1. 3. Remove the Plate Button Ass'y in the direction of arrow
2. Remove the Cover Back in the direction of arrow (A). (A).
3. Remove the 3 screws 2. 4. Remove the 4 screws 2.
4. Remove the Stand Ass'y in the direction of arrow (B). 5. Remove the Operation PCB in the direction of arrow
5. Remove the 5 screws 3. (B).
6. Remove the Frame Stand in the direction of arrow (C).
7. Remove the 4 screws 4. 2
8. Remove the Angle Stand in the direction of arrow (D). 2 1
2
(B)
2
4
3
Cover Back 3 1
4 Operation PCB Plate Button Ass'y
1 3
1
(D) (A)
2 2 Frame Stand
(A) (C)
2 Angle Stand
(B)
Stand
Fig. 1-3
1-4: MAIN PCB (Refer to Fig. 1-4)
Fig. 1-1
1. Disconnect the following connectors:
(CP302, CP3400, CP3401, CP4301 and CP7201).
1-2: BACK CABINET (Refer to Fig. 1-2) 2. Remove the 7 screws 1.
1. Remove the 9 screws 1. 3. Remove the Main PCB in the direction of arrow (A).
2. Remove the 4 screws 2. 4. Remove the 2 screws 2.
3. Remove the Back Cabinet in the direction of arrow. 5. Remove the 3 screws 3.
6. Remove the Plate Jack in the direction of arrow (B).
2 1
7. Remove the Shield Jack in the direction of arrow (C).
1 21
1 22
1
11 3
1 3
3
1 1
1 (C) (B)
1
2 1
1 Plate Jack
2
Back Cabinet 1 Shield Jack
1
Main PCB
(A)
Fig. 1-4
Fig. 1-2
B1-1
DISASSEMBLY INSTRUCTIONS
1-5: SCALER PCB (Refer to Fig. 1-5)
1. Disconnect the following connectors:
(CP6700, CP6701, CP6702, CP6703 and CP6705).
2. Remove the 7 screws 1.
3. Remove the Power PCB in the direction of arrow (A).
4. Remove the Holder PCB in the direction of arrow (B).
1
1 1
1
1 1
1
Power PCB
(A)
Holder PCB
(B)
Fig. 1-5
1-6: LCD COVER/LCD PANEL (Refer to Fig. 1-6)
1. Remove the 2 screws 1.
2. Remove the Angle Frame in the direction of arrow (A).
3. Remove the LCD Cover in the direction of arrow (B).
4. Remove the LCD Panel in the direction of arrow (C).
1
1
Angle Frame
(A)
LCD Cover
(B)
LCD Panel
Front Cabinet
(C)
Fig. 1-6
B1-2
DISASSEMBLY INSTRUCTIONS
2. REMOVAL AND INSTALLATION OF 3. When IC starts moving back and forth easily after
desoldering completely, pickup the corner of the IC
FLAT PACKAGE IC using a tweezers and remove the IC by moving with the
IC desoldering machine. (Refer to Fig. 2-3.)
REMOVAL
NOTE
1. Put Masking Tape (cotton tape) around the Flat Package
Some ICs on the PCB are affixed with glue, so be
IC to protect other parts from any damage. careful not to break or damage the foil of each IC
(Refer to Fig. 2-1.) leads or solder lands under the IC when removing it.
NOTE
Masking is carried out on all the parts located within Blower type IC
10 mm distance from IC leads. desoldering
machine
Masking Tape IC
(Cotton Tape)
Tweezers
Fig. 2-1
IC
Fig. 2-3
2. Heat the IC leads using a blower type IC desoldering
machine. (Refer to Fig. 2-2.)
4. Peel off the Masking Tape.
NOTE
5. Absorb the solder left on the pattern using the Braided
Do not rotate or move the IC back and forth unit IC Shield Wire. (Refer to Fig. 2-4.)
can move back and forth easily after desoldering the
NOTE
leads completely.
Do not move the Braided Shield Wire in the vertical
direction towards the IC pattern.
Blower type IC
desoldering machine
Braided Shield Wire
Soldering Iron
IC
IC pattern Fig. 2-4
Fig. 2-2
B2-1
DISASSEMBLY INSTRUCTIONS
INSTALLATION 4. When bridge-soldering between terminals and/or the
soldering amount are not enough, resolder using a Thin-
1. Take care of the polarity of new IC and then install the tip Soldering Iron. (Refer to Fig. 2-8.)
new IC fitting on the printed circuit pattern. Then solder
each lead on the diagonal positions of IC temporarily.
(Refer to Fig. 2-5.)
Thin-tip Soldering Iron IC
Soldering Iron
Fig. 2-8
5. Finally, confirm the soldering status on four sides of the
Solder temporarily Solder temporarily
IC using a magnifying glass.
Confirm that no abnormality is found on the soldering
Fig. 2-5 position and installation position of the parts around the
IC. If some abnormality is found, correct by resoldering.
2. Supply the solder from the upper position of IC leads NOTE
sliding to the lower position of the IC leads.
When the IC leads are bent during soldering and/or
(Refer to Fig. 2-6.)
repairing, do not repair the bending of leads. If the
bending of leads are repaired, the pattern may be
damaged. So, be always sure to replace the IC in this
case.
Solder Soldering Iron
IC Supply soldering
from upper position
to lower position
Fig. 2-6
3. Absorb the solder left on the lead using the Braided
Shield Wire. (Refer to Fig. 2-7.)
NOTE
Do not absorb the solder to excess.
Soldering Iron
IC
Braided Shield Wire
Fig. 2-7
B2-2
SERVICE MODE LIST
This unit is provided with the following SERVICE MODES so you can repair, examine and adjust easily.
To enter to the SERVICE MODE function, press and hold both buttons simultaneously on the main unit and on the remote
control for more than the standard time in the appropriate condition. (See below chart.)
Set Remocon Standard
Set Key Operations
Condition Key Time
Initialization of factory TV data.
VOL. DOWN NOTE: If you set factory initialization, the memories are reset
TV mode 1 2 sec.
(Minimum) such as the channel setting, and the POWER ON total
hours.
VOL. DOWN Check of the SUM DATA and MICON VERSION on the screen.
TV mode 2 2 sec.
(Minimum) Refer to the "WHEN REPLACING EEPROM (MEMORY) IC".
POWER ON total hours are displayed on the screen.
Refer to the "PREVENTIVE CHECKS AND SERVICE INTERVALS"
VOL. DOWN (CONFIRMATION OF HOURS USED).
TV mode 6 2 sec.
(Minimum)
Can be checked of the INITIAL DATA of MEMORY IC.
Refer to the "WHEN REPLACING EEPROM (MEMORY) IC".
Display of the Adjustment MENU on the screen.
VOL. DOWN
ALL mode 9 2 sec. Refer to the "ELECTRICAL ADJUSTMENT" (On-Screen Display
(Minimum)
Adjustment).
CONFIRMATION OF POWER ON TOTAL HOURS
POWER ON total hours can be checked on the screen. Total hours are displayed in 16 system of notation.
NOTE: If you set a factory initialization, the total hours is reset to "0".
1. Turn on the POWER, and set to the TV mode.
2. Set the VOLUME to minimum.
3. Press both VOL. DOWN button on the set and Channel button (6) on the remote control for more than 2 seconds.
4. After the confirmation of POWER ON total hours, turn off the power.
ADDRESS DATA
OEC7162A-083 MICON Version
INIT 0000 F8 Initial setting content of MEMORY IC.
LCD ON 0000 POWER ON total hours.
= (16 x 16 x 16 x thousands digit value)
+ (16 x 16 x hundreds digit value)
+ (16 x tens digit value)
+ (ones digit value)
C-1
WHEN REPLACING EEPROM (MEMORY) IC
CONFIRMATION OF CHECK SUM, MICON VERSION AND DIGITAL TV MICON FIRMWARE
Initial total of MEMORY IC, MICON VERSION and Digital TV MICON Firmware can be checked on the screen. Total hours
are displayed in 16 system of notation.
NOTE: If you set a factory initialization, the total hours is reset to "0".
Please refer to "CONFIRMATION OF INITIAL DATA" when SUM DATA is not corresponding.
1. Turn on the POWER, and set to the TV mode.
2. Set the VOLUME to minimum.
3. Press both VOL. DOWN button on the set and Channel button (2) on the remote control for more than 2 seconds.
4. After the confirmation of MICON VERSION and Digital TV MICON Firmware, turn off the power.
ADDRESS and DATA should appear as FIG 1.
*1 DVP1 is different according to each set.
Version
Hardware version 2.0
Software version ADDD0400-A Firmware Version
[PRE-PRODUCTION]
OEC7162A-083 MICON Version
Initial setting data check sum. INIT: 6A10 ROM: 7E5F
AD CONVERTER data check sum. ADC: 0000 DVP: 1F84 *1 Rom correction data check sum.
SCALER data check sum.
FIG. 1
CONFIRMATION OF INITIAL DATA
If a service repair is undertaken where it has been required to change the MEMORY IC, the following steps should be taken to
ensure correct data settings while making reference to INITIAL SETTING TABLE (Attached "INITIAL DATA").
1. Turn on the POWER, and set to the TV mode.
2. Set the VOLUME to minimum.
3. Press both VOL. DOWN button on the set and Channel button (6) on the remote control for more than 2 seconds.
ADDRESS and DATA should appear as FIG 2.
ADDRESS DATA
OEC7162A-083
INIT 0000 F8
LCD ON 0000
FIG. 2
4. ADDRESS is now selected and should "blink". Using the UP/DOWN buton on the remote, step through the ADDRESS
until required ADDRESS to be changed is reached.
5. Press RIGHT/LEFT button to select DATA. When DATA is selected, it will "blink".
6. Again, step through the DATA using UP/DOWN button until required DATA value has been selected.
7. Pressing RIGHT/LEFT button will take you back to ADDRESS for further selection if necessary.
8. Repeat steps 4 to 6 until all data has been checked.
9. When satisfied correct DATA has been entered, turn POWER off (return to STANDBY MODE) to finish DATA input.
After the data input, set to the initializing of shipping.
10. Turn POWER on.
11. Press both VOL. DOWN button on the set and Channel button (1) on the remote control for more than 2 seconds.
12. After the finishing of the initializing of shipping, the unit will turn off automatically.
The unit will now have the correct DATA for the new MEMORY IC.
C-2
RE-WRITE FOR DIGITAL SOFT FIRMWARE
JG198 JG199 Flash UP-Date Soft JG176 DTV ROM DISC
Serial Communication Disc
Change JIG
Ref. No. Part No. Parts Name Remarks
Serial Communication
JG198 APJG201000 Connect the set to personal computer
Change JIG
JG199 APJG200000 Flash UP-Date Soft Disc Up-Date of the Firmware
JG176 APJG176109 DTV ROM DISC Up-Date of the Firmware
1. Confirm that the AC cord is plugged out.
2. Using the Serial Communication Change JIG (JG198), connect the set to personal computer. (Refer to Fig. 1)
NOTE: It is possible to write only with the personal computer of WINDOWS.
Fig. 1
3. Using the Flash UP-Date Soft Disc (JG199) and DTV ROM DISC (JG176), please Re-write the DIGITAL SOFT FIRMWARE.
The operating manual for Re-writing is included in Flash UP-Date Soft Disc (JG199).
C-3
ELECTRICAL ADJUSTMENTS
1. ADJUSTMENT PROCEDURE NO. FUNCTION NO. FUNCTION
Read and perform these adjustments when repairing the 01 H POSI OSD 23 H POSI MIN
02 V POSI OSD 24 V POSI
circuits or replacing electrical parts or PCB assemblies.
03 R DRIVE (H) 25 V POSI MAX
CAUTION 04 R CUTOFF (H) 26 V POSI MIN
05 G DRIVE (H) 27 BAK LIGHT CENT
· Use an isolation transformer when performing any 06 G CUTOFF (H) 28 BAK LIGHT MAX
service on this chassis. 07 B DRIVE (H) 29 BAK LIGHT MAX
· When removing a PCB or related component, after 08 B CUTOFF (H) 30 BRIGHT CENTER
unfastening or changing a wire, be sure to put the wire 09 R DRIVE (M) 31 BRIGHT MAX
back in its original position. 10 R CUTOFF (M) 32 BRIGHT MIN
· When you exchange IC and Transistor with a heat sink, 11 G DRIVE (M) 33 TINT CENTER
12 G CUTOFF (M) 34 CONTRAST CENTER
apply silicon grease (YG6260M) on the contact section of
13 B DRIVE (M) 35 CONTRAST MAX
the heat sink. Before applying new silicon grease, 14 B CUTOFF (M) 36 CONTRAST MIN
remove all the old silicon grease. (Old grease may cause 15 R DRIVE (L) 37 CONTRAST 50
damage to the IC and Transistor). 16 R CUTOFF (L) 38 COLOR CENTER
17 G DRIVE (L) 39 COLOR MAX
Prepare the following measurement tools for electrical 18 G CUTOFF (L) 40 COLOR MIN
adjustments. 19 B DRIVE (L) 41 TEXT H POSI
20 B CUTOFF (L) 42 TEXT V POSI
1. Pattern Generator 21 H POSI 43 DAC Vcom
22 H POSI MAX
Fig. 2-2
2. BASIC ADJUSTMENTS
On-Screen Display Adjustment 2-1: FLICKER
1. Set the VOLUME to minimum. 1. Activate the adjustment mode display of Fig. 2-1 and
2. Press the VOL. DOWN button on the set and the 2. press the channel button (43) on the remote control to
channel button (9) on the remote control for more than select "DAC Vcom".
2 seconds to display adjustment mode on the screen as 3. Check if the screen is flashing.
shown in Fig. 2-1. 4. If screen is flashing, press the" i+" button on the
remote control and using the LEFT/RIGHT button on
the remote control to adjust the screen.
2-2: WHITE BALANCE
TV
1. Place the set in Aging Test for more than 15 minutes.
2. Receive the gray scale pattern from the Pattern
Generator.
3. Press the INPUT button on the remote control to set to
the AV mode.
9
4. Using the remote control, set the brightness and contrast
01 H POSI OSD
to normal position.
5. Activate the adjustment mode display of Fig. 2-1 and
press the channel button (03) on the remote control to
Fig. 2-1 select "R DRIVE (N)".
6. Press the UP/DOWN button on the remote control to
3. Use the UP/DOWN button or Channel button (0-9) on select the "R CUTOFF (N)", "B DRIVE (N)", "B CUTOFF
the remote control to select the options shown in