Sharp LC-23LE448RU Schematic
SERVICE MANUAL
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LED BACKLIGHT TV
S84O3LC23LE44
20-08-2014
MODEL
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.
LC-23LE448RU
CONTENTS
Page
• SERVICING NOTICES ON CHECKING ……………………………………………………………………………………A1-1
• HOW TO ORDER PARTS …………………………………………………………………………………….……………
• IMPORTANT ……………………………………………………………………………………………...…………………
• ABOUT LEAD FREE SOLDER (PbF) ……………………………………………………………..………………………
• CAUTION WHEN REMOVE THE REAR CABINET…………………………………………………………..…………
• HOTEL MODE FUNCTION ……………………………………………………………..…………………………………
• GENERAL SPECIFICATIONS ……………………………………………………………………………………………
• DISASSEMBLY INSTRUCTIONS ………………………………………………………………….……………………… B1-1~B2-2
• HOW TO UPGRADE SOFTWARE ………………………………………………………………………………………
• ELECTRICAL ADJUSTMENTS……………………………………………………………………..……………………… D-1, D-2
• TROUBLESHOOTING GUIDE ……………………………………………………………………….……………………
• BLOCK DIAGRAM …………………………………………………………………………………..………………………
• PRINTED CIRCUIT BOARDS ……………………………………………………………………….……………………
• SCHEMATIC DIAGRAMS …………………………………………………………………………..……………………… H-1, H-2
• WAVEFORMS ……………………………………………………………………………………….………………………
• MECHANICAL EXPLODED VIEWS ……………………………………………………………………… ……………… J1-1, J1-2
• REPLACEMENT PARTS LIST ……………………………………………………………………..……..………………
A1-1
A1-1
A1-2
A1-2
A1-3
A2-1~A2-6
C-1
E-1~E-5
F-1, F-2
G-1
I-1
K1~K3
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.
SHARP CORPORATION
!
This document has been published to be used for
after sales service only.
The contents are subject to change without notice.
required.
SERVICING NOTICES ON CHECKING
1. KEEP THE NOTICES 6. PERFORM A SAFETY CHECK AFTER
SERVICING
As for the places which need special attentions,
they are indicated with the labels or seals on the Confirm that the screws, parts and wiring which
cabinet, chassis and parts. Make sure to keep the were removed in order to service are put in the
indications and notices in the operation manual. original positions, or whether there are the
portions which are deteriorated around the
2. AVOID AN ELECTRIC SHOCK
There is a high voltage part inside. Avoid an external metal and the AC cord plug blades.
electric shock while the electric current is And be sure the safety of that.
flowing.
3. USE THE DESIGNATED PARTS
The parts in this equipment have the specific 2. Remove the antenna terminal on TV and turn
characters of incombustibility and withstand on the TV.
voltage for safety. Therefore, the part which is 3. Insulation resistance between the cord plug
replaced should be used the part which has terminals and the eternal exposure metal
the same character.
Especially as to the important parts for safety using the 500V insulation resistance meter
which is indicated in the circuit diagram or the
table of parts as a ! mark, the designated 4. If the insulation resistance is less than 1M
parts must be used. ohm, the inspection repair should be
serviced places serviced or not. Check the
insulation between the antenna terminal or
(INSULATION CHECK PROCEDURE)
1. Unplug the plug from the AC outlet.
[Note 2] should be more than 1M ohm by
[Note 1].
4. BE CAREFUL WITH THE
LCD PANEL [Note 1]
If you have not the 500V insulation
Avoid a shock to the panel while servicing. resistance meter, use a Tester.
Take enough care to deal with it.
[Note 2]
5. PUT PARTS AND WIRES IN THE
ORIGINAL POSITION AFTER
ASSEMBLING OR WIRING
There are parts which use the insulation
material such as a tube or tape for safety, or
which are assembled in the condition that
these do not contact with the printed board.
The inside wiring is designed not to get closer
to the pyrogenic parts and high voltage parts.
Therefore, put these parts in the original
positions.
External exposure metal: Antenna terminal
HOW TO ORDER PARTS
Please include the following informations when you order parts.
1. MODEL NUMBER
The MODEL NUMBER can be found on the back of each product and can be
found at the end of the SERIAL NUMBER.
2. PART NO. and DESCRIPTION
You can find it in your SERVICE MANUAL.
IMPORTANT
When you exchange IC and Transistor with a heat sink, apply silicon grease (YG6260M) on the contact
section of the heat sink. Before applying new silicon grease, remove all the old silicon grease.
(Old grease may cause damage to the IC and Transistor).
A1-1
All products with the printed circuit board with PbF printing must be serviced with lead free solder.
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
Please use a soldering iron with temperature control and adjust it to 650
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
•
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.
o
F~104oF(30oC~40oC) higher.
o
F ± 20oF (350oC ± 10oC).
o
F/ 600oC).
Recommendations
Recommended lead free solder composition is Sn-3.0Ag-0.5Cu.
CAUTION WHEN REMOVE THE REAR CABINET
1. Remove SCREWs from COVER BACK ASS'Y and hold the COVER BACK ASS'Y as the below Picture.
2. Remove connector of CD2201䇮CD2202䇮CD301 from MAIN PCB BOARD.
In doing so, take care the space NOT to touch T-CON PCB , COVER BACK ASS'Y must be held off the T-CON PCB
( as NOT over dashed line in below picture).
3. And then, also take care for cables NOT to be fallen down from RIBs on COVER BACK ASS'Y side.
COVER BACK
SPACE
T-CON PCB
A1-2
/
pp
HOTEL MODE FUNCTION
To set the Hotel mode, please follow the steps below.
1. Press the MENU---> 1147 button on the remote control.
2. Press the DOWN button on the remote control,
3. Select the "GENERAL SETTING" menu , then press ENTER button.
Select the "Hotel Mode " menu, Select "ON",Then press the RETURN button.
4.
Using the LEFT/RIGHT button on the remote control, please select " ".
5.
Then press the ENTER button.
6.
Please input the password "0000". Then press the ENTER button.
7.
The Hotel mode setting menu will appear.
8.
9. Using the UP/DOWN button on the remote control,
select the desired mode. Then press the ENTER button.
10. Using the LEFT/RIGHT button on the remote control,
set the mode to desired setting.
11. The Hotel mode has now been set up.
To reset the Hotel mode, please follow the steps below.
1. Press the MENU---> 1147 button on the remote control.
2. Press the DOWN button on the remote control,
3. Select the "GENERAL SETTING" menu , then press ENTER button.
4. Select the "Hotel Mode " menu.
5. Using the LEFT/RIGHT button on the remote control, please select " ".
6. Then press the ENTER button.
7. Please input the password "0000". Then press the ENTER button.
8. The setting items has now been returned to initial value.
Hotel Mode
On
Setting item Setting value Initial value
TV/AV/
Source Lock COMPONENT/ Setting Input skip, combine with "Default Source".
HDMI/PC/MEDIA
Default Source
Default Prog
Maximum volume 0~100 100
Default Volume 0~100 20 Setting volume at Power on.
Clear Lock Setting of the Hotel Mode return factory setting.
Set Password Setting of the Password.
TV/AV
COMPONENT/ Setting Input Source, combine with "Source Lock"
HDMI/PC/MEDIA If select "Source Lock" for this function disa
0~199 1 Setting of the CH if select "Default Source" to TV input.
OFF
Setting of the maximum volume value.
FUNCTION
ear.
A1-3
A1-3
GENERAL SPECIFICATIONS
G-1 TV
System
G-2 Tuning
System
G-3 Power
G-4 Regulation
G-5 Temperature
G-6 Operating Humidity
G-7 OSD Language
G-8 Clock and
Timer
G-9 Remote
Control
LCD LCD Size / Visual Size 22.95 inch / 583.0mmV
Color System PAL / SECAM / NTSC3.58 / NTSC4.43 / PAL60
Speaker 2 Speaker
Sound Output MAX 5W + 5W
Broadcasting System Analog
Tuner and System 1Tuner (Analog)
Receive CH Destination UK, I.R., CCIR Hyper
CH Coverage Analog 44.25MHz~863.25MHz
Intermediate Analog
Frequency Picture(FP) 38.9 / 38.9 / 38.9 / 45.75MHz
Auto Tuning Method
Preset CH Analog 199 Carrier
Stereo/Dual TV Sound Nicam / A2 Dual / US Stereo(w/ SAP)
Tuner Sound Muting Yes
Power Source AC 220-240V AC 50/60Hz
Power Consumption at AC 33 W at AC 220 V 50 Hz
Protector Power Fuse Yes
Sleep Timer Max Time 240 Min
On/Off Timer Program(On Timer / Off Timer) -- Program / -- Program
Timer Back-up (at Power Off Mode) more than -- Min Sec
EPG Timer Events -Unit RC-UW
Case Color Black
Glow in Dark Remocon No
Remocon Format SHARP
Format SHARP
Custom Code 10000 / 10001 / 01111
Power Source Voltage(D.C) 3V
Total Keys 43 Keys
Keys Power (Stand By) Yes
LCD Type Color TFT LCD
Number of Pixels 1366(H) x 768(V)
Double Scan No
View Range Left/Right 85/85 degree
Up/Down 85/85 degree
Bright Dot
Zero Bright Dot Ratio --
Position Bottom
Size 1.0 x 2.5 inch
Impedance 4 ohm
10%(Typical) ---
Sound(FS)
FP-FS
DC ---
at DC --
Stand by (at AC) w/ EPG Timer --
w/o EPG Timer 1 W at AC 230 V 50 Hz
Per Year -- kWh/Year
Safety
Radiation EN55013,EN55020,EN55022
X-Radiation Operation
Storage
Space Around Unit 100mm (4inch)
Step 10 / 20 / 30 / 60 / 90 / 120 / 180 / 240 Min
UM size x pcs UM-4 x 2 pcs
Information Yes
Analog Menu No
Digital Menu No
Input Select Yes
TV/DVB-T No
Guide No
Picture Size Yes
1 Yes
2 Yes
3 Yes
4 Yes
5 Yes
6 Yes
7 Yes
8 Yes
9 Yes
n҇0
PAL(B/G, D/K, I), SECAM(B/G, D/K)
BG / II / DK / M
33.4 / 32.9 / 32.4 / 41.25MHz
5.5 / 6.0 / 6.5 / 4.5MHz
ALL Band (Not C.C.I.R. CH Plan)
IEC60065 Ed.7:2001+Amd.1:2005, EAC(applied by
Sharp)
IEC61000-3-2, IEC61000-3-3
o
0
C ~ +40oC
o
-20
C ~ +60oC
Less than 80% RH
English, Simplified Chinese, Arabic, Thai, Persian
French, Vietnam, Russian, Malay, Portuguese,
Spanish, Indonesian
A2-1
A2-1
GENERAL SPECIFICATIONS (continued)
0 Yes
Sleep No
Mute Yes
Volume Up / ń
Volume Down / ł
Volume Up Yes
Volume Down Yes
CH Down Yes
CH Up Yes
Menu Yes
㸡
㸣
㸠
㸢
MEDIA Yes
Enter / CH List Yes
Return / Index Yes
Freeze frame Yes
Quick View Yes
Audio 1/2 Yes
TV/Radio No
Subtitle No
Reveal Yes
HOLD Freeze Frame enable
Red Yes
Green Yes
Yellow Yes
Cyan Yes
F/T/B(Expand) Yes
Sub Page Quick View enable
Page Up CH Up enable
Page Down CH Down enable
STOP Yes
SEARCH > Yes
SEARCH < Yes
SKIP >> Yes
SKIP << Yes
Country No
TV Location No
Auto Power Off Yes
Auto tuning Yes
Auto clock (Digital tuner) No
Plug in start Yes
Brightness , Contrast , Color Yes
Tint Yes
Sharpness Yes
DNR Yes
Color Temperature Yes
Backlight Control Yes
DBC (Dynamic Backlight Control) No
Motion 100/120Hz No
Film Mode No
Brightness , Contrast , Color Yes
Sharpness No
HOR POSITION , VER POSITION Yes
PHASE , CLOCK Yes
AUTO ADJUST Yes
RED , GREEN , BLUE No
DNR No
Color Temperature Yes
Backlight Yes
WXGA INPUT No
WVGA INPUT No
G-10 Features
T'TEXT Keys TV / TEXT / MIX Yes
USB MEDIA Keys PLAY / PAUSE Yes
Power On Memory Yes
Auto Shut Off Yes
Just Clock Function No
Game Position No
DNR Yes
Comb Filter Yes
Auto Set Up (Fast installation) Language Yes
Picture Setting(TV) Picture Mode Yes
Picture Setting(PC) Picture Mode Yes
No
No
Yes
Yes
Yes
Yes
3D
3D
CH sort No
ATS No
A2-2
GENERAL SPECIFICATIONS (continued)
Audio Sound Mode Yes
Tuning Auto Tuning Yes
Lock Key Lock Yes
Screen Saver
T'Text Yes
Text and Picture No
Wide Mode (4:3/16:9/CINEMA/REAL) Yes
CH Label Yes
Reset to Default Yes
HD Zoom No
Picture Scroll (Vertical Position) No
PFC(Power Factor circuit) No
Freeze frame Yes (ATV/CVBS in Only)
Plug and Play No
Power Management Yes
Hearing Impaired No
Audio Description No
Power On LED No
HDMI Mode No
Blue Back Yes
Scart Spec Scart1 AV in No
Scart2 AV in No
Digital Text (VBI teletext)
MHEG-5
MHP
EPG (BBC type 8Days Digital tuner only)
OAD (Over Air Download)
Common Interface (Digital tuner only)
Rec Screen Status
Ch sorting based on Ch List (Digital/Germany only)
Rename Carrier (Digital)
Edit Event Timer
Software Update via CI Slot
Preference Language (Audio/Subtitle/Digital Service)(Digital)
DVB Subtitle (Digital)
Clock
DST
Signal Status
Digital Out Dolby Digital No
Decode(Down Mix) Dolby Digital No
Tone Control (Bass/Treble/Balance) Yes
Surround Yes
Equalizer No
Speaker No
Auto Volume Yes
BBE No
SRS WOW (SRS 3D/Focus/Tru Bass) No
Variable Audio Out No
Manual Tuning Yes
Update Scan No
CH Skip Yes
CH Move Yes
CH Del Yes
Fine Tuning Yes
Channel Lock No
Parental Lock (Digital) No
Hotel Lock Yes
USB Clone (Hotel Lock) Yes
Inversion No
Full White No
Screen Saver No
Static Image No
Text type Fastext / Toptext
Text Language English, German, Swedish, Finnish, Hungarian,
AV out No
S-Video in No
RGB in No
AV out No
S-Video in No
RGB in No
Dolby Digital Plus No
MPEG No
HE AAC No
Dolby Digital Plus No
Italian, French, Portuguese, Spanish, Czech,
Slovak, Polish, Estonian, Lettish, Lithuanian,
Slovenian, Rumanian, Russian,
Ukrainian, Turkish, Greek, Hebrew, Farisi
Arabic, Serbian, Croatian, Bulgarian
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
A2-3
GENERAL SPECIFICATIONS (continued)
MPEG No
HE AAC No
USB Media Player Photo JPEG (.jpg/.jpeg), BMP (.bmp), PNG (.png)
Music MP3 (.mp3), WMA (.wma), AAC (.aac/.m4a)
Video Container AVI (.avi), MKV (.mkv), MP4 (.mp4),
Video Codec Xvid, MPEG1, MPEG2, MPEG4 SP/ASP,
Audio Codec MPEG2, MP3, PCM/ADPCM, WMA, AC-3, AAC
Text Text (.txt)
PC Monitor Input Yes
VGA (640x480) Yes (60Hz)
VGA (720x400) No (Possible to Display)
WVGA (848x480) No
SVGA (800x600) Yes (60Hz)
XGA (1024x768) Yes (60Hz)
WXGA (1280x768) Yes (60Hz)
WXGA (1280x720) Yes (60Hz)
WXGA (1360x768) Yes (60Hz)
SXGA (1280x1024) Yes (60Hz)
WXGA+ (1440x900) Yes (60Hz)
WSXGA+ (1680x1050) No (Possible to Display)
FULL HD (1920x1080) Yes (60Hz)
HDMI Input Yes
VGA (640×480)
VGA (720x400) No (Possible to Display)
WVGA (848x480) No
SVGA (800x600) Yes (60Hz)
XGA (1024x768) Yes (60Hz)
WXGA (1280x768) Yes (60Hz)
WXGA (1280x720) Yes (60Hz)
WXGA (1360x768) Yes (60Hz)
SXGA (1280x1024) Yes (60Hz)
WXGA+ (1440x900) Yes (60Hz)
WSXGA+ (1680x1050) No (Possible to Display)
FULL HD (1920x1080) Yes (60Hz)
720×480i (4:3)
720×480i (16:9)
720×480p (4:3)
720×480p (16:9)
720×576i (4:3)
720×576i (16:9)
720×576p (4:3)
720×576p (16:9)
1280×720p
1920×1080i
1920×1080p
CEC(ORION Standard)
Deep Color
xvYCC
Component Input Yes
720×480i (4:3)
720×480i (16:9)
720×480p (4:3)
720×480p (16:9)
720×576i (4:3)
720×576i (16:9)
720×576p (4:3)
720×576p (16:9)
1280×720p
1920×1080i
1920×1080p
Wall Mount Size W x H(mm) Yes (100 x 100)
Screw Size M4 x 10
Stand Tilt No
Swievel No
PS (.mpg), TS (.ts/.trp), VOB (.vob)
DIVX(.div/.divx/.avi/.mp4), MOV(.mov)
MJPEG, H.264, DIVX
Yes (60Hz)
Yes (60Hz)
Yes (60Hz)
Yes (60Hz)
Yes (60Hz)
Yes (50Hz)
Yes (50Hz)
Yes (50Hz)
Yes (50Hz)
Yes (50/60Hz)
Yes (50/60Hz)
Yes (24/50/60Hz)
No
No
No
Yes (60Hz)
Yes (60Hz)
Yes (60Hz)
Yes (60Hz)
Yes (50Hz)
Yes (50Hz)
Yes (50Hz)
Yes (50Hz)
Yes (50/60Hz)
Yes (50/60Hz)
No (Possible to Display)
A2-4
GENERAL SPECIFICATIONS (continued)
G-11 Accessories
G-12 Interface
G-13 Set Size
G-14 Weight
Owner's Manual Language Russian/Kazak (w/EAC number)
Remote Control Unit Yes
DVB-T Antenna No
U/V Mixer No
Information Sheet (VESA) No
DC Car Cord (Center+) No
Warranty card Yes(w/Serial No, Model No. label)
EAC Safety sheet Yes ( for AUG'14 O/R only)
Warning Sheet No
Circuit Diagram No
Antenna Change Plug No
Service Facility List No
Important Safeguard No
Quick Set-up Sheet No
Battery Yes
AC Adapter No
AC Cord (for AC Adapter) No
AC Cord No
AV Cord (2Pin-1Pin) No
HDMI-DVI Cable No
Registration Card No
300 ohm to 75 ohm Antenna Adapter No
Stand Screw??? Yes (4pcs)
Stand Yes
Frame Stand No
Switch Side Power (Tact) Yes
Indicator Power/Stand-by Yes(Green / Red)
Terminals Rear Video Input 1
w/Guarantee Card No
UM size x pcs UM-4 x 2 pcs
OEM Brand No
System Select No
Main Power SW No
Channel Up/Menu Up Yes
Channel Down/Menu Down Yes
Volume Up/Menu > Yes
Volume Down/Menu < Yes
Input Select/Enter Yes
Menu No ("Vol-"+"Vol+" 1sec)
On Timer No
Audio Input 1
S- Input 1 No
Video Input 2 No
Audio Input 2 No
S- Input 2 No
Video Output No
Audio Output No
Digital Audio Out (Coaxial) No
Euro Scart (21Pin) No
Component In
Audio Input (Component In use)
HDMI Input 1
Audio Input (HDMI/DVI In use) PC Monitor Audio Input enable
HDMI Input 2 No
Audio Input (HDMI/DVI In use) No
PC Monitor Input (D-Sub)
Audio Input
USB
Sub Woofer Output No
Diversity No
Ext Speaker No
DC Jack 12V(Center +) No
VHF/UHF Antenna Input
Headphone No
CI Card Slot No
AC Inlet No
Approx. W x D x H (mm) 542 x 136.9 x 350.5
w/o Stand,Handle Approx. W x D x H (mm)
Net Approx. 3.0 kg (6.6lbs)
Net w/o Stand,Handle Approx. 2.8 kg (6.2lbs)
Gross Approx. 4.1 kg (9.1lbs)
Gross w/Master Carton (Approx.) --- kg ( --- lbs)
RCA x 1
RCA x 2(L, R)
RCA x 3
Audio Input1 enable
Yes
Yes
Mini Pin Jack(Ǘ3.5), STEREO
Yes
DIN Type
542 x 57.5 x 326.5
A2-5
GENERAL SPECIFICATIONS (continued)
G-15 Carton
G-16 Material
G-17 Environment
Master Carton No
Gift Box Yes
Drop Test Natural Dropping At 1 Corner / 3 Edges / 5 Surfaces
Container Stuffing 2400 Sets/40' hi-cub container
w/Pallet No
w/Wrapping No
Cabinet Cabinet Front PS 94HB (Piano)
PCB Non-Halogen No
Environmental standard requirement Green procurement of SHARP
Pb- Free Phase3(PHASE3A)
WEEE No
Content ---- Sets
Material -- /-Dimensions W x D x H(mm) -- x -- x --
Description of Origin No
Material Single/Full Color
W/Color Photo Label No
W/Handle
Dimensions W x D x H(mm) 589 x 113 x 390
Design As per Buyer's
Description of Origin Yes
Height (cm) 48 (ES:+15%, PP:+5%)
Cabinet Rear PS 94V0 NON-DECABROM
Speaker Box -Stand PS 94HB (Piano)
Eyelet Yes
Measures for Whisker Yes
Yes
A2-6
(A)
g
g
(
)
(
)
y
(
)
y
(1)
g
(
(2)
(B)
pp
p
(D)
y
Fig.1
3
DISASSEMBLY INSTRUCTIONS
1. REMOVAL OF MECHANICAL PARTS
1-3: MAIN UNIT (Refer to Fig. 1-3)
AND P.C. BOARDS
1. Remove the 5 screws (1).
2. Remove the Shield Main in the direction of arrow
CAUTION
Parts removal shuld be perform in clean room cause 4. Remove the Main Unit in the direction of arrow (B).
•
the unit will be dero
Be careful not to remove the LVDS cable forcibly, because
•
the LVDS cable may be damaged.
To wear the gloves each time.
•
1-1: STAND ASS'Y
Remove the 4 screws (1).
1.
Remove the Stand Ass'y in the direction of arrow.
2.
1-2: COVER BACK ASS'Y
1. Remove the 11 screws
2. Disconnect the followin
ate by dust.
Refer to Fig. 1-1
Stand Ass'y
Refer to Fig. 1-2
.
connectors:
(1)
(1)
(1)
Fig. 1-1
(1)
CD301, CD2201 and CD2202).
3. Remove the Cover Back Ass'y in the direction of arrow (A).
4. Remove the 2 screws
5. Remove the Sheet PC in the direction of arrow
6. Unlock the su
7. Remove the O
eration PCB in the direction of arrow (C).
.
.
ort (3).
8. Unlock the 2 supports (4).
9. Remove the Remocon PCB in the direction of arrow
(1)
(1)
(1)
(1)
Cover Back Ass'y
(A)
Operation PCB
(1)
(1)
(1)
(1)
(3)
(1)
(1)
(C)
(D)
(B)
Remocon PCB
.
(1)
(4)
3.
Disconnect the followin
Shield Main
Main Unit
1-4: LED MODULE ASS'Y
connectors: (CN12 and CNB802).
(1)
(1)
(1)
(A)
(1) (1)
(B)
Refer to Fig. 1-4
1. Unlock the 14 supports (1).
2. Remove the LED Module Ass'
in the direction of
arrow (A) -> (B) -> (C) -> (D), Please remove carefully
(1)
(1)
.
(A)
(B)
(D)
(1)
(1)
Front Cabi Ass'y
LED Module Ass'y
.
and slowl
• Do not touch LED Module Ass'
.
-
(C)
(1)
(1)
Fig. 1-4
(2)
(2)
Sheet PC
Fig. 1-2
B1-1
Fig.2-1
DISASSEMBLY INSTRUCTIONS (continued)
2. REMOVAL AND INSTALLATION OF
FLAT PACKAGE IC
3. When IC starts moving back and forth easily after
desoldering completely, pickup the corner of the IC using
tweezers and remove the IC by moving with the IC
REMOVAL desoldering machine. (Refer to Fig. 2-3.)
1. Put Masking Tape (cotton tape) around the Flat Package
NOTE
IC to protect other parts from any damage.
(Refer to Fig. 2-1.)
Some ICs on the PCB are affixed with glue, so be
careful not to break or damage the foil of each IC
NOTE
leads or solder lands under the IC when removing it.
Masking is carried out on all the parts located within
10 mm distance from IC leads.
Masking Tape
(Cotton Tape)
IC
Tweezers
Blower type IC
desoldering machine
2. Heat the IC leads using a blower type IC desoldering
machine. (Refer to Fig. 2-2.)
IC
NOTE
Fig. 2-3
Do not rotate or move the IC back and forth , until IC 4. Peel off the Masking Tape.
can move back and forth easily after desoldering the
leads completely. 5. Absorb the solder left on the pattern using the Braided
Shield Wire. (Refer to Fig. 2-4.)
Blower type IC
desoldering machine
NOTE
Do not move the Braided Shield Wire in the vertical
direction towards the IC pattern.
Braided Shield Wire
Soldering Iron
IC
Fig. 2-2
IC pattern
Fig. 2-4
B2-1
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