Sharp LC-20A2U User manual

1
LC-20A2U
SERVICE MANUAL
S00J6LC-20A2U
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.
MODEL LC-20A2U
CONTENTS
»IMPORTANT SERVICE SAFETY NOTES......... 2
»SPECIFICATIONS ............................................. 4
»OPERATION MANUAL...................................... 5
»DIMENSIONS .................................................... 7
»REMOVING OF MAJOR PARTS....................... 8
»TROUBLE SHOOTING TABLE ........................11
»ADJUSTMENT PROCEDURES ...................... 14
»CHASSIS LAYOUT.......................................... 16
»BLOCK DIAGRAM ........................................... 18
»DESCRIPTION OF SCHEMATIC DIAGRAM .. 20
»SCHEMATIC DIAGRAM
ËOPERATION UIT ....................................... 21
ËMAIN UNIT ................................................ 22
ËTERMINAL UNIT ....................................... 26
Page Page
ËY/C SEPARATION UNIT............................ 28
ËINVERTER UNIT ....................................... 30
»PRINTED WIRING BOARD ASSEMBLIES..... 31
»PARTS LIST
ËELECTRICAL PARTS ................................ 36
ËMAIN UNIT ................................................ 36
ËY/C SEPARATION UNIT............................ 40
ËTERMINAL UNIT ....................................... 42
ËINVERTER UNIT ....................................... 43
ËOPERATION UNIT .................................... 44
ËCABINET AND MECHANICAL PARTS ..... 44
ËACCESSORIES PARTS ............................ 46
ËPACKING PARTS ...................................... 46
»PACKING OF THE SET................................... 47
SHARP CORPORATION This document has been published to be used for
after sales service only.
The contents are subject to change without notice.
LCD COLOR TELEVISION

2
LC-20A2U
CAUTION: FOR CONTINUED
PROTECTION AGAINST A RISK OF
FIRE REPLACE ONLY WITH SAME
TYPE FUSE. F3701 (2.5A, 125V),
F3702 (3.15A, 125V), F7751 (6.0A,
125V) FUSE.
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SAFETY NOTICE
Many electrical and mechanical parts in LCD television
have special safety-related characteristics.
These characteristics are often not evident from visual
inspection, nor can protection afforded by them be
necessarily increased by using replacement components
rated for higher voltage, wattage and etc.
Replacement parts which have these special safety
characteristics are identified in this manual; electrical
components having such features are identified by “ å”
IMPORTANT SERVICE SAFETY PRECAUTION
ËService work should be perfomed only by qualified service technicians who are thoroughly
familiar with all safety checks and the servicing guidelines which follow:
and shaded areas in the Replacement Parts Lists and
Schematic Diagrams .
For continued protection, replacement parts must be
identical to those used in the original circuit.
The use of a substitute replacement parts which do not
have the same safety characteristics as the factory
recommended replacement parts shown in this service
manual, may create shock, fire or other hazards.
WARNING
1. For continued safety, no modification of any circuit
should be attempted.
2. Disconnect AC power before servicing.
BEFORE RETURNING THE RECEIVER
(Fire & Shock Hazard)
Before returning the receiver to the user, perform
the following safety checks:
1. Inspect all lead dress to make certain that leads are
not pinched, and check that hardware is not lodged
between the chassis and other metal parts in the
receiver.
2. Inspect all protective devices such as non-metallic
control knobs, insulation materials, cabinet backs,
adjustment and compartment covers or shields,
isolation resistor-capacitor networks, mechanical
insulators and etc.
3. To be sure that no shock hazard exists, check for
leakage current in the following manner.
•Plug the AC cord directly into a 110~240 volt AC outlet,
and connect the DC power cable into the receiver's
DC jack. (Do not use an isolation transformer for this
test).
•Using two clip leads, connect a 1.5k ohm, 10 watt
resistor paralleled by a 0.15µF capacitor in series with
all exposed metal cabinet parts and a known earth
ground, such as electrical conduit or electrical ground
connected to an earth ground.
•Use an AC voltmeter having with 5000 ohm per volt, or
higher, sensitivity or measure the AC voltage drop
across the resisor.
•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 and 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 35V peak (this corresponds to 0.7
milliamp.peak AC.) or more is excessive and indicates
a potential shock hazard which must be corrected
before returning the monitor to the owner.
TO EXPOSED
METAL PARTS CONNECT TO
KNOWN EARTH
GROUND
DVM
AC SCALE
50k ohm
10W
0.15 µF
TEST PROBE
A V

3
LC-20A2U
DVM
AC SCALE
50k ohm
10W
0.15 µF
TEST PROBE
PRECAUTION: POUR LA
PROTECTION CONTINUE CONTRE
LES RISQUES D'INCENDIE,
REMPLACER LE FUSIBLE PAR UN
FUSIBLE DE MEME TYPE F3701
(2.5A, 125V), F3702 (3.15A, 125V),
F7751 (6.0A, 125V).
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AVIS POUR LA SECURITE
De nombreuses pièces, électriques et mécaniques,
dans les téléviseurs présentent des caractéristiques
spéciales relatives àla sécurité, qui ne sont souvent
pas évidentes àvue. Le degréde protection ne peut
pas être nécessairement augmentée en utilisant des
pièces de remplacement étalonnées pour haute tension,
puissance, etc.
Les pièces de remplacement qui présentent ces
caractéristiques sont identifiées dans ce manuel; les
pièces électriques qui présentent ces particularités sont
PRECAUTIONS A PRENDRE LORS DE LA REPARATION
ËNe peut effectuer la réparation qu' un technicien spécialisé qui s'est parfaitement
accoutumé à toute vérification de sécurité et aux conseils suivants.
identifiées par la marque " å" et hachurées dans la
liste des pièces de remplacement et les diagrammes
schématiques.
Pour assurer la protection, ces pièces doivent être
identiques àcelles utilisées dans le circuit d'origine.
L'utilisation de pièces qui n'ont pas les mêmes
caractéristiques que les pièces recommandées par
l'usine, indiquées dans ce manuel, peut provoquer des
électrocutions, incendies, radiations X ou autres
accidents.
AVERTISSEMENT
1. N'entreprendre aucune modification de tout circuit.
C'est dangereux.
2. Débrancher le récepteur avant toute réparation.
VERIFICATIONS CONTRE L'INCEN-DIE ET
LE CHOC ELECTRIQUE
Avant de rendre le récepteur à l'utilisateur, effectuer
les vérifications suivantes.
1. Inspecter tous les faisceaux de câbles pour s'assurer
que les fils ne soient pas pincés ou qu'un outil ne soit
pas placéentre le châssis et les autres pièces
métalliques du récepteur.
2. Inspecter tous les dispositifs de protection comme les
boutons de commande non-métalliques, les isolants,
ledosdu coffret,les couverclesou blindagesde réglage
etde compartiment,lesréseauxderésistance-capacité,
les isolateurs mécaniques, etc.
3. S'assurer qu'il n'y ait pas de danger d'électrocution en
vérifiant la fuite de courant, de la facon suivante:
•Brancher le cordon d'alimentation directem-ent àune
prise de courant de 110-240V. (Ne pas utiliser de
transformateur d'isolation pour cet essai).
•A l'aide de deux fils àpinces, brancher une résistance
de 1,5 kΩ10 watts en parallèle avec un condensateur
de 0,15µF en série avec toutes les pièces métalliques
exposées du coffret et une terre connue comme une
conduite électrique ou une prise de terre branchée àla
terre.
•Utiliser un voltmètre CA d'une sensibilitéd'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
inverséla fiche du cordon d'alimentation. (Si
nécessaire, une prise d'adpatation non polarisée peut
être utilisée dans le but de terminer ces vérifications.)
Tous les courants mesurés ne doivent pas dépasser
0,5 mA.
Dans le cas contraire, il y a une possibilitéde choc
électrique qui doit être supprimée avant de rendre le
récepteur au client.
A V
AUX PIECES
METALLIQUES
EXPOSEES
BRANCHER A UNE
TERRE CONNUE
0.15µF
SONDE D'ESSAI
VTVM
ECHELLE CA

4
LC-20A2U
Specifications

5
LC-20A2U
Operation Manual

6
LC-20A2U

7
LC-20A2U
Dimensions
(Unit: inch/mm)

8
LC-20A2U
REMOVING OF MAJOR PARTS
1. Detach the terminal cover.
2. Remove the four lock screws from the table stand.
3. Remove the four lock screws each from the left and right speakers. Disconnect the connectors
and detach the speaker assemblies.
4. Remove the ten lock screws from the terminals.
5. Remove the five lock screws from the cabinet B.
6. Undo the nine hooks off the cabinet B: Press the hook 6-1 first and then the hooks 6-2 thru
6-9 in this order. Detach the cabinet B.
7. Undo the six wire holders and peel off the 9 pieces of tape. Disconnect the connection
cables.
(Note: Some pieces of tape are located below the PWBs.To access such tape, detach the
PWBs, peel off the tape and disconnect the cables.)
8. Disconnect the connectors from the PWBs.
2
Table Stand
Table Stand (Cover)
Cabinet B
Cabinet A
5
4
1
Terminal Cover
6-7
6-8
6-9
6-6
6-5 6-4
6-3
6-2
6-1
3
3Speaker Assembly (Left)
Speaker Assembly (Right)
SC1201
SC1202
P753
P701 P7305
P303
P754
P755 P2001
P7102 P7101
P7301
SC3401
SC3405
SC7001
SC401
P3701
P7751
P7753
P7755
P4004
P3206
(INVERTER
Unit)
(TERMINAL Unit)
(OPERATION Unit)
8
8
8
7
8
8
8
7
7
7
Tape
Speaker (Right)
Connection Cable
Tape
Tape Tape
Tape
Tape (MAIN Unit)
7
7
Terminal PWB Holder
Speaker (Left)
Connection Cable
(Y/C
SEPARATION
Unit)

9
LC-20A2U
LCD Display Unit
MAIN Unit
TERMINAL PWB Assembly
OPERATION
Unit
Cabinet A
INVERTER Unit
Y/C SEPARATION Unit
14
13
12
911
10
12
13
Reinforcement
Plate
9. Remove the four lock screws from the MAIN PWB.
10. Remove the four lock screws from the Y/C SEPARATION PWB.
11. Remove the three lock screws from the INVERTER PWB.
12. Remove the lock screw from the TERMINAL PWB and the lock screw from the grounding
terminal. Detach the reinforcement plate too.
13. Remove the two lock screws from the LCD display unit.
14. Remove the three lock screws from the OPERATION PWB.

10
LC-20A2U
»Precautions in handling the LCD panels
1. Work in a clean room (with humidities below 50%).
2. Be sure to wear an anti-static armband.
3. Handle the panels on an electroconductive mat.
4. Be careful not to fall, shake and shock the panels.
15. Remove the four lock screws from the front of the LCD display unit and
the three lock screws from its back. Detach the shielding plate.
16. Detach the two reflection sheets.
17. Detach the top and bottom fluorescent lamps.
18. Remove the photoconductive plate.
19. Detach the top and bottom reflection sheets.
20. Detach the ITO sheet.
21. Detach the diffusion sheet and
reflection/deflection plate.
Fluorescent Lamp (Top)
(KLMP-0101CEZZ)
Lamp Reflector
(PSHEP0223CEZZ)
LCD Display Unit
Fluorescent Lamp (Bottom)
(KLMP-0102CEZZ)
Lamp Reflector (Bottom)
(PSHEP0224CEZZ)
Diffusion Sheet
Photoconductive Plate
Reflection/deflection Plate
Reflection Sheet
(PSHEP0186CEZZ)
15
15
16
17
21 19
17
19
18
20
Reflection Sheet
(PSHEP0187CEZZ)
Shielding Plate
ITO Sheet
LCD Display Unit
(Front)
15
15

11
LC-20A2U
TROUBLE SHOOTINGTABLE
No picture
at all
Yes
No
Are inputs
and outputs
of IC802 as
specified?
Check all the settings on the microprocessor’s adjust process menu.
No picture
Check IC802
and its
peripheral
parts.
Yes
No
Are inputs
and outputs
of IC1201 as
specified?
Check
IC1201 and
its peripheral
parts.
Check LCD
panel voltage
and
waveform.
NoTV and
VIDEO 1
output
Yes
No
Are inputs
and outputs
of IC402 as
specified?
Check IC402
and its
peripheral
parts.
No
Is input at pin
(73) of IC802
as specified?
Check IC802,
AV1 line and
their
peripheral
parts.
NoTV
output
Yes
No
Are voltages
at pins (6),
(7) and (9) of
tuner as
specified?
Check the
power line.
Yes
No
Is output at
pin (19) of
tuner as
specified?
Check the
tuner and its
peripheral
parts.
No
Is input at pin
(1) of IC402
as specified?
Check the
line in
question.
Yes
Check IC402
and its
peripheral
parts.
Yes
No
Are pins (2)
and (4) of
IC402 at “H”
and “L”
respectively?
Are pins (65)
and (66) of
IC2001 at “H”
and “L”
respectively?
NoVIDEO
1 output
Yes
No
Is input at pin
(1) of IC402
as specified?
Check the
line in
question.
Yes
No
Are pins (2)
and (4) of
IC402 both at
“L”?
NoVIDEO
2 output
No
Is input at pin
(74) of IC802
as specified?
Check J3403,
AV2 line and
their
peripheral
parts.
No S
VIDEO
output
No
Are inputs at
pins (71) and
(72) of IC802
as specified?
Check
SC3301, SY
line, SC line
and
peripheral
parts.
No
COMPONENT
output
No
Is input at
pins (4), (5),
(6) and (75)
of IC802 as
specified?
Check J3405,
DVD-Y line,
CB line, CR
line and
peripheral
parts.
Are pins (65)
and (66) of
IC2001 both
at “L”?
Check IC402
and its
peripheral
parts.
Yes
Check the
line in
question.
Yes
Check the
line in
question.

12
LC-20A2U
TROUBLE SHOOTINGTABLE (Continued)
No picture and sound
No color
NoTV color No S-VIDEO color
Yes
No
Do F3701 and F3702
function?
Check all the settings on the microprocessor’s adjust process menu.
No
Are secondary outputs
(+38V, +16V, +9V, +5V, -8V)
of T701 as specified?
Yes
Are the oscillation waveform
at T701’s primary side as
specified?
Yes
No
Disconnect F3701 and
F3702. Is the load side
short-circuited?
Yes
No
Is any of T701’s primary side,
Q701, Q710 and S4701
short-circuited?
Check J3701, its peripheral
parts and connection cable.
Replace F3701 and F3702.
Check S4701 and
connection cable.
Check the secondary-side
load of T701.
Fluorescent lamp
Yes
No
Does F7751 function?
Yes
No
Is Pin (34) of IC1201 at “H”?
Yes
No
Are the oscillation waveforms
at the primary side of T7751-6
as specified?
Yes
Replace F7751.
No
Is input at pin (71) of IC802
as specified?
Check SC3301, SC line and
peripheral parts.
Yes
Check the line, IC1201 and
its peripheral parts.
Check Q7751-5,T7751-6
and their peripheral parts.
Replace the fluorescent lamp
and check the oscillation
waveform again.
NoVIDEO color
Check all the settings on the microprocessor’s adjust process menu.
No COMPONENT color
No
Is input at pins (4) and (6) of
IC802 as specified?
Check J3405, CB line, CR
line and peripheral parts.

13
LC-20A2U
TROUBLE SHOOTINGTABLE (Continued)
No sound
from
speakers
Yes
No
Is pin (53) of
IC2001 at “L”?
Check all the settings on the microprocessor’s adjust process menu.
No sound
No
Are outputs at
pins (1) and (7)
of IC903 as
specified?
Yes
No
Are inputs and
outputs of
IC303 as
specified?
Yes
No
Are inputs at
pins (11) and
(16) as well as
outputs at pins
(3) and (5), all
of IC7305, as
specified?
Muting effect is
on. Check the
FSMU line.
Check IC901,
IC903 and their
peripheral
parts.
Check IC303
and its
peripheral
parts.
Check the line
in question,
IC7305 and its
peripheral
parts.
Yes
Check the
speakers and
their peripheral
parts.
No sound
from
headphone
Yes
No
Is pin (55) of
IC2001 at “L”?
Check the
headphone and
its peripheral
parts.
Check Q306,
J4001 and their
peripheral
parts.
No sound
from output
line
Yes
No
Is pin (52) of
IC2001 at “L”?
No
Are outputs at
pins (1) and (7)
of IC902 as
specified?
Yes
Check the line
in question.
Check the
LMUTE line.
Check IC902
and its
peripheral
parts.
TV sound
failure
Yes
No
Is output at pin
(16) of tuner as
specified?
No
Is input at pin
(60) of IC901
as specified?
Check the
tuner and its
peripheral
parts.
Check IC901,
Q3301, Q3204,
Q3205 and
their peripheral
parts.

14
LC-20A2U
ADJUSTMENT PROCEDURES
The product has been factory-adjusted to optimum settings.If by any chance any of the settings gets out of position
or when a part has been replaced, take the following procedures.
Preparations
Use the specific AC adaptor or a regulated DC power supply.
AC adaptor: UADP-0220CEZZ
DC power supply:13 V, 4.2 A (monitor power 3.7 A, audio amplifier power 1.0 A)
1. Adjustment Procedures
1-1. Adjusting the checker
Turning on the power (getting initialized) →Selecting the model number and screen size (inches) →
Transferring the model-specified data to the setting EEPROM (I2C) →
Calling the adjustment process mode →+B adjustment
1-2. Making finish process adjustments
Turning on the power →Calling the adjustment process mode (with the remote controller) →
Adjusting the counter bias, TV contrast and white balance.
2. Calling the Adjustment Process Mode
There are two ways to enter this mode.
»Set the KEY4 (pin (81) of IC2001) and KEY5 (pin (82) of IC2001) to the L level and turn on the power.
»Hold down both the “TV/VIDEO” and “MENU” keys at once and turn on the main power. (Make sure “K”
appears at the top left of the screen, which means the set is in the inspection process mode.)Then press the
“CH "” and “VOL –”keys at once.To quit this mode, just turn off the main power. (The mode can be turned
off with the power switch either on the set or the remote controller.)
3. Key Operation in the Adjustment Process Mode
Selecting a receiving channel
»Select an actual receiving channel with the “CH "/'” keys.
Short push-in : Channels are selected one after another.
Long push-in : Channels are skipped up to the next receivable channel.
»Adjustments
All the items can be adjusted one by one with the “MENU”, “CH "/'” and “VOL + / –” keys (on the set and
the remote controller).
»The “MENU” key serves to toggle between adjustment items (the next item is selected).
Let’s suppose that the item at the bottom line is now selected.Press the “MENU” key and the item at the top
line on the next page will be selected.
»The “TV/VIDEO” key is also used to toggle between adjustment items.
Let’s suppose that the item at the top line is now selected. Press the “TV/VIDEO” key and the item at the
bottom line on the previous page will be selected.
»Let’s suppose that the PAL/NTSC is selected on pages 11 and 12. By pressing the “VOL + / –” keys, the
register selection mode is brought on and the cursor moves to the address 01.
»Using the “CH "/'” and “VOL + / –” keys, move the cursor vertically and horizontally, respectively. Use the
“12” key to enter the setting.
With an item selected, the cursor moves to its setting. Using the “VOL + / –” keys, the setting of the item
selected can be changed first for the left side.A new setting is now entered with the “12” key.Using the “VOL
+ / –” keys again, the right-side setting can also be changed.
0 ←→ 1 ←→ ...←→ 9 ←→ A ←→ ... ←→ F ←→ 0 ←→ ...
Enter the setting with the “12”key. Go back to the address selection and go to the next item with the “MENU”
key.The cursor moves for address selection as follows using the “VOL + / –” keys.
Example : 01←→ 02 ←→ 03 ←→ 01 ←→ ...
Similarly the cursor moves as follows with the “CH "/'” keys.
Example : 02 ←→ 05 ←→ ... ←→ F6 ←→ 02 ←→ ...

15
LC-20A2U
4. Getting Initialized
4-1. Connect pins (81) and (82) of IC2001 to GND.Turn on the power.
4-2. Select the model number (A2U).
4-3. Select the screen size (20 inches).
Note: This procedure is needed only when the IC2001 or IC2004 (EEPROM) has been replaced.
5. Adjustments
5-1. +B adjustment (+B ADJ.on page 1)
1) Receive the color bar signal.
2) Adjust the voltage at pin (8) of P303 to 5.00 ±0.02V.
Note:The 5.00 V level is used as reference to the supply voltage. Make an exact adjustment to 5.00 V.
5-2. Counter bias adjustment ...... “COM BIAS” on page 2
1) Adjust the COM BIAS setting until the contrast becomes maximum (down to the darkest black).
5-3. White balance adjustment
1) Receive the monoscope pattern signal.
2) Adjust so that the “RCUTOFF” and“BCUTOFF”settings on page 2 of the adjustment process are optimum.
Note: The “RCUTOFF” and “BCUTOFF” settings in the adjustment process should be in the range of -10
thru +10. If without this range, the variable user control range will be reduced.
6. Factory Settings
Holding down the “TV/VIDEO” and “MENU” keys of the set at once, turn on the main power (make sure “K”
appears at the top left of the screen).Then keep pressing the“CH '”and “VOL +”keys at once until “SETTING
COMPLETE” appears at the center of the screen.
Note: Just after the factory settings have been made, turn off the power switch.
(The next time the power is switched on, the set is designed to get started in the EZ SETUP mode. If
any other key is activated after making the factory settings, the set may fail to function as specified.)

1716
LC-20A2U
121110987654321
A
B
C
D
E
F
G
H
CHASSIS LAYOUT
MAIN Unit (Side A) Y/C SEPARATION Unit (Side A)
MAIN Unit (Side B) Y/C SEPARATION Unit (Side B)
OPERATION Unit
INVERTER Unit
TERMINAL Unit

1918
LC-20A2U
121110987654321
A
B
C
D
E
F
G
H
BLOCK DIAGRAM

20
LC-20A2U
VOLTAGE MEASUREMENT CONDITION:
1. Voltages at test points are measured at the
supply voltage of AC 120V. Signals are fed by a
color bar signal generator for servicing purpose and
the above voltages are measured with a 20k ohm/
V tester.
WAVEFORM MEASUREMENT CONDI-
TION:
1. Waveforms at test points are observed at the supply
voltage of AC 120V. Signals are fed by a color bar
signal generator for servicing purpose.
INDICATION OF RESISTOR & CAPACI-
TOR:
RESISTOR
1. The unit of resistance “Ω” is omitted.
(K=kΩ=1000 Ω, M=MΩ).
2. All resistors are ± 5%, unless otherwise noted.
(J= ± 5%, F= ± 1%, D= ± 0.5%)
3. All resistors are 1/10W, unless otherwise noted.
4. All resistors are Carbon type, unless otherwise
noted.
C: Solid W: Cement
S: Oxide Film T: Special
N: Metal Coating
CAPACITOR
1. All capacitors are µF, unless otherwise noted.
(P=pF=µµF).
2. All capacitors are 50V, unless otherwise noted.
3. All capacitors are Ceramic type, unless otherwise
noted.
(ML): Mylar (TA): Tantalum
(PF): Polypro Film (ST): Styrol
CAUTION:
This circuit diagram is original one, therefore there may be a
slight difference from yours.
SAFETY NOTES:
1. DISCONNECT THE AC PLUG FROM THE AC
OUTLET BEFORE REPLACEING PARTS.
2. SEMICONDUCTOR HEAT SINKS SHOULD BE
REGARDED AS POTENTIAL SHOCK HAZARDS
WHENTHE CHASSIS IS OPERATING.
IMPORTANT SAFETY NOTICE:
PARTS MARKED WITH “ å ” ( ) ARE
IMPORTANT FOR MAINTAINING THE SAFETY OF
THE SET. BE SURE TO REPLACE THESE PARTS
WITH SPECIFIED ONES FOR MAINTAINING THE
SAFETY AND PERFORMANCE OFTHE SET.
AVIS DE SECURITE IMPORTANT:
LES PIECES MARQUEES “ å ”( )SONT
IMPORTANTES POUR MAINTENIR LA SECURITE
DE L'APPAREIL.
NE REMPLACER CES PIEDES QUE PAR DES
PIECES DONT LE NUMERO EST SPECIFIE POUR
MAINTENIR LA SECURITE ET PROTEGER LE BON
FONCTIONNEMENT DE L'APPAREIL.
DESCRIPTION OF SCHEMATIC DIAGRAM

21
654321
A
B
C
D
E
F
G
H
LC-20A2U
SCHEMATIC DIAGRAM
ËOPERATION Unit

2322
LC-20A2U
121110987654321
A
B
C
D
E
F
G
H
ËMAIN Unit-1/2