Sharp lc22ad1e schematic
LC-22AD1E
SERVICE MANUAL
S14N8LC22AD1E2E
LCD COLOUR TELEVISION
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.
CONTENTS
» IMPORTANT SERVICE SAFETY PRECAUTION ................................................................................... 2
» SPECIFICATIONS................................................................................................................................... 4
» OPERATION MANUAL............................................................................................................................ 5
» DIMENSIONS .......................................................................................................................................... 9
» REMOVING OF MAJOR PARTS........................................................................................................... 10
» TROUBLE SHOOTING TABLE ............................................................................................................. 15
» ADJUSTING PROCEDURES ................................................................................................................ 22
» SOFTWARE UPGRADE PROCEDURE DIGITAL BROADCASTING RECEIVER UNIT...................... 36
» MAJOR IC INFORMATIONS ................................................................................................................. 39
» CHASSIS LAYOUT ................................................................................................................................ 56
» BLOCK DIAGRAM................................................................................................................................. 59
» OVERALL WIRING DIAGRAM .............................................................................................................. 62
» DESCRIPTION OF SCHEMATIC DIAGRAM ........................................................................................ 64
» SCHEMATIC DIAGRAM ........................................................................................................................ 65
» PRINTED WIRING BOARD ASSEMBLIES........................................................................................... 94
» PARTS LIST..........................................................................................................................................114
» PACKING OF THE SET....................................................................................................................... 133
LC-22AD1E
Page
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LC-22AD1E
2
2
IMPORTANT SERVICE SAFETY PRECAUTION
Ë
Service work should be perfomed 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 ONL Y WITH SAME
TYPE F3701 (T2.5AL, 250V), F3702
(T3.15AL, 250V), F6551 (T1.25AL,
250V), F6552 (T1.25AL, 250V),
F6553 (T1.25AL, 250V) AND F6554
(T1.25AL, 250V) FUSE.
BEFORE RETURNING THE RECEIVER
(Fire & Shock Hazard)
Before returning the receiver to the user, perform
the following safety checks:
1. Inspect all lead dress to make certain that leads are
not pinched, and check that hardware is not lodged
between the chassis and other metal parts in the
receiver.
2. Inspect all protective devices such as non-metallic
control knobs, insulation materials, cabinet backs,
adjustment and compartment covers or shields,
isolation resistor-capacitor networks, mechanical
insulators, etc.
3. To be sure that no shock hazard exists, check for
leakage current in the following manner.
• Plug the AC cord directly into a 110~240 volt AC outlet,
and connect the DC power cable into the receiver's
DC jack. (Do not use an isolation transformer for this
test).
• Using two clip leads, connect a 50k 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, etc.) and measure the AC voltage drop
across the resistor.
All checks must be repeated with the AC cord plug
connection reversed. (If necessary, a nonpolarized
adaptor plug must be used only for the purpose of
completing these checks.)
Any reading of 0.75V rms (this corresponds to 0.5
milliamp. rms AC.) or more is excessive and indicates
a potential shock hazard which must be corrected
before returning the monitor to the owner.
DVM
AC SCALE
50k ohm
10W
0.15 F
TEST PROBE
TO EXPOSED
METAL PARTS
CONNECT TO
KNOWN EARTH
GROUND
234567890123456789012345678901212345678901234567890123456789012123456789012345678901234567890121
SAFETY NOTICE
Many electrical and mechanical parts in LCD television
have special safety-related characteristics.
These characteristics are often not evident from visual
inspection, nor can protection afforded by them be
necessarily increased by using replacement components
rated for higher voltage, wattage, etc.
Replacement parts which have these special safety
characteristics are identified in this manual; electrical
and shaded areas in the
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.
components having such features are identified by “ å”
234567890123456789012345678901212345678901234567890123456789012123456789012345678901234567890121
2
Replacement Parts Lists
.
and
LC-22AD1E
Precautions for using lead-free solder
1 Employing lead-free solder
"Inverter PWB","AV PWB","R/C,LED PWB","EXT-SP TERMINAL PWB","OPEARATION PWB","SP-JACK
PWB","MAIN PWB"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 leadfree solder.
Example:
L Fa
Indicates lead-free solder of tin, silver and copper.
2 Using lead-free wire solder
When fixing the PWB soldered with the lead-free solder, apply lead-free wire solder. Repairing with conventional
lead wire solder may cause damage or accident due to cracks.
As the melting point of lead-free solder (Sn-Ag-Cu) is higher than the lead wire solder by 40ºC, we recommend
you to use a dedicated soldering bit, if you are not familiar with how to obtain lead-free wire solder or soldening
bit, contact our service station or service ranch in your area.
3 Soldering
As the melting point of lead-free solder (Sn-Ag-Cu) is about 220°C which is higher than the conventional lead
solder by 40°C, and as it has poor solder wettabillty , 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 excoeded, remove the bit from the PWB as soon as you conurm the steady
soldering condition.
Lead-free solder contains more tin, and the end of the soldering bit may be easily corroded. Make sure to tum 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.
Becareful when replacing parts with polarity indication on the PWB silk.
Lead-free wire solder for servicing
Part No, ★ Description Code
ZHNDAi123250E J φ0.3mm 250g(1roll) BL
ZHNDAi126500E J φ0.6mm 500g(1roll) BK
ZHNDAi12801KE J φ1.0mm 1kg(1roll) BM
3
LC-22AD1E
SPECIFICATIONS
Specifications are subject to change without prior notice.
4
OPERATION MANUAL
LC-22AD1E
Part name of Main unit
5
LC-22AD1E
Part name of Remote control unit
6
LC-22AD1E
Country
fin
esp
fra
gbr
grc
Search
Country
Service scan
System software
Preparation
7
LC-22AD1E
Useful featuresDgital TV features
8
DIMENSIONS
LC-22AD1E
Unit: mm
420
582
91.5
510
180.7
492.6
367
462
270.2
100
43.9
100
53
99
183
250
9
LC-22AD1E
REMOVING OF MAJOR PARTS
1. Remove the 4 stand fixing screws to detach
the stand.
2. Remove the terminal covers (R), (L) and (C).
3. Remove the 2 terminal fixing screws.
4. Remove the 4 speaker fixing screws to detach
the speaker.
5. Remove the 6 cabinet B fixing screws.
6. Open in the direction of the arrow and detach
the cabinet B.
7. Remove the 4 stand reinforcement angle fixing
screws. Remove the connector (MF) to detach
the stand reinforcement angle.
Terminal Cover (R)
2
Cabnet B
5
Control Panel (Top Cover)
Cabnet A
Remove the antenna cable
Shield Tape
Tape
Connector(MF)
Fan
1
7
Stand
Stand Reinforcement Angle
2
Terminal Cover (C)
6
4
Speaker
3
Terminal Cover (L)
2
P3705
10
LC-22AD1E
8. Remove the tape for fixing the wire.
9. Remove the individual connectors from the AV PWB and EU-DIGITAL PWB.
10. Remove the 4 AV PWB terminal fixing screws.
11. Remove the 2 EU-DIGITAL PWB terminal fixing screws and the PC card cover.
12. Disconnect the connector connecting the EXT-SP TERMINAL PWB and MAIN PWB. Then loosen the PWB
fixing claw to detach the EXT-SP TERMINAL PWB.
13. Remove the 3 AV PQB fixing screws to detach the AV PWB. Then remove the cassis frame cover from the AV
PWB.
14. Remove the 4 EU-DIGITAL PWB fixing screws to detach the EU-DIGITAL PWB.
15. Remove the 7 chassis frame fixing screws to detach the chassis frame.
14
MAIN PWB
R/C, LED PWB
AV PWB
9
MG
P701
OPERATION PWB
SC2503
SC2504
SC2501
P2501
1600
1503
9
SC903
SC904
SC2500
P3704
SC2502
SC905
9
P904
P3703
9
EXT-SP TERMINAL PWB
EU-DIGITAL PWB
MG
9
SP-JACK PWB
INVERTER PWB
10
15
AV PWB
Chassis
Frame Cover
13
EU-DIGITAL PWB
11
11
Chassis Frame
MAIN PWB
P404
PC Card Cover
12
P202
EXT-SP TERMINAL PWB
LC-22AD1E
P3404
SC4902
P3503
SC4901
P132
SC1102
P3700
P3701
P3501
P3401
P3402
P3403
P3702
P201
P101
P6555
P6551
P6552
P6553
P6554
MG
17
17
17
17
17
17
17
17
17
17
17
16
16
MAIN PWB
R/C, LED PWB
SP-JACK PWB
OPERATION PWB
1BIT-AMP UNIT
INVERTER UNIT
Wire Holder
Wire Holder
16. Open the wire holder and disconnect the
connection cord.
17. Disconnect each connector from each PWB.
18. Remove the 2 top cover ass’y fixing
screws to take out the top cover ass’y
(OPERATION PWB).
19. Remove the 2 OPERATION PWB fixing
screws from the top cover ass’y to detach
the OPERATION PWB.
20. Remove the 2 1BIT-AMP UNIT fixing
screws to detach the 1 BIT-AMP UNIT.
21. Remove the 3 speaker fixing angle (R) fixing
screws to detach the speaker fixing angle
(R).
22. Remove the 2 R/C, LED PWB fixing screws
to detach the R/C, LED PWB.
23. Remove the 4 speaker fixing angle (L) fixing
screws to detach the speaker fixing angle
(L).
24. Remove the 2 speaker terminal PWB fixing
screws to detach the speaker terminal PWB.
18
MAIN PWB
Top Cover Ass'y
19
20
1BIT-AMP UNIT
OPERATION
PWB
INVERTER PWB
22
21
Speaker Fixing
Angle (R)
R/C, LED PWB SP-JACK PWB
24
Speaker Fixing
Angle (L)
23
12
25. Remove the 4 MAIN PWB fixing screws to detach the MAIN PWB.
26. Remove the 4 INVERTER PWB fixing screws to detach the INVERTER PWB.
27. Remove the 2 LCD panel fixing screws to detach the LCD panel unit.
25
INVERTER PWB
MAIN PWB
LC-22AD1E
26
Back Shielding Plate
27
13
LC-22AD1E
Æ Cautions when handling the LCD panel
1. Work in a clean room (relative humidity: 50% or more).
2. The workers must wear an earth band.
3. Do not expose it to shocks such as drop or vibration.
4. Use an ionizer (within 30 cm).
28. Remove the 4 LCD panel fixing screws to detach the LCD panel unit.
29. Remove the ITO earth fixing angle fixing screw to detach the ITO fixing angle.
30. Detach the reflection/polarization sheet, prism sheet, diffusion sheet, and diffusion plate.
31. Remove each 2 lamp fixing holder (upper) fixing screws to detach the lamp fixing holders (upper).
32. Detach the lamp units A and B.
33. Remove each 1 lamp fixing holder (lower) fixing screws to detach the lamp fixing holders (lower).
34. Detach the 2 lamp clips.
Back Sheilding Plate
(PSLDMA322WJFW)
Lamp Clip
(LHLDZA223WJKA)
34
ITO Earth Spring
(MSPRP1220CEFW)
29
Diffusion Panel
(PCOVU0108CEZZ)
30
22" LCD panel unit
(RLCDTA021WJZZ)
28
Lamp Fixing Holder (Bottom)
(LHLDZA219WJKZ)
Lamp Fixing Holder (Top)
(LHLDZA218WJKZ)
31
30
Prism Sheet
(PSHEPA002WJZZ)
Reflection/Deflection Sheet
(PSHEPA003WJZZ)
33
31
Diffusion Sheet
(PSHEP0294CEZZ)
33
Lamp Fixing Holder
(Bottom)
(LHLDZA219WJKZ)
Reflection Sheet
(PSHEPA112WJZZ)
32
Lamp Unit-A
(KLMP-A022WJZZ)
Lamp Unit-B
(KLMP-A023WJZZ)
Lamp Fixing Holder (Top)
(LHLDZA218WJKZ)
14
Yes
No
No
No
No
Yes
No
No
No
No
Yes
Yes
Yes
Yes
Yes
Yes
No picture, No sound
Fluorescent lamp failure to light up
Check all connection of each unit. (Refer to overall wiring diagram.)
Check all the settings microprocessor’s adjust process menu.
Do F3701 and F3702
function?
Remove F3701 and F3702 and
check the load side. Is there
short-circuiting?
Is there short-circuiting of
T3700 primary side periphery,
IC3700, Q3706 and P3703?
Replace F3701 and F3702.
Check T3700’s secondary side
periphery.
Are T3700’s secondary
outputs B31V, B9V, B5V and
B8V normal?
Check T3700’s primary side
periphery.
Check T3700’s primary side
periphery, Q3715 and their
peripheral parts.
Check T3700’s secondary
load.
Does F6551, F6552, F6553
and F6554 function?
Replace F6551, F6552,
F6553 and F6554.
Is the pin(10) of lC4512 in the
"H" state?
Check the OFL line
(Q3700), IC4512 and
their peripheral parts.
Are the Q6564, Q6566,
Q6568 and Q6570 short-
circuiting?
Check Q6564, Q6566,
Q6568, Q6570 and their
peripheral parts.
Is T6551 ~ T6554’s primary
oscillator waveform normal?
Check Q6551, Q6552, Q6554,
Q6555, Q6557, Q6558, Q6560,
Q6561 and connection cable.
Replace the Fluorescent lamp
with new one and check again.
TROUBLE SHOOTING TABLE
LC-22AD1E
15
LC-22AD1E
No picture
No picture at
all
No TV, AV1,
AV2 and AV3
output
No TV output
Check all the settings microprocessor’s adjust process menu.
Is in/output of
IC801 normal?
Check lC801
and its
peripheral parts.
Is in/output of
IC4601 normal?
Check IC4601
and its
peripheral parts.
Is in/out of
IC4512 normal?
Check lC4512
and its
peripheral parts.
Check LCD
panel voltages
and waveform.
Is in/output of
lC2521 normal?
Check IC2521
and its
peripheral parts.
Are input at pins
(71), (72) and
(73) of lC801
normal?
Check lC801
and its
peripheral parts.
Are voltages at
pins (6), (7) and
(18) of tuner
normal?
Check the power
line.
Is output at pin
(13) of tuner
normal?
Check tuner and
its peripheral
parts.
Is intput at pin
(23) of IC2521
normal?
Check the its
line.
Check IC2521
and its
peripheral parts.
No DTV output
When input source change as
"TV" and "AV1" to "AV3",
Does the LCD displays
correct video?
Check the
Main2 (power)
part.
Yes
No
Yes
No
Yes
Yes
Is DTV menu displayed when
press "DTV MENU" button?
Yes
Check the power
line. (P3704 &
opposite side)
Check cable
insertion. (SC2500
& opposite side)
Does "Weak or missing signal"
dialogue appears when
antenna cable removes?
Yes
Yes
Yes
Yes
Yes
Yes
Exchange DTV
unit. (Tuner part
problem)
Is any service found by
performing "Reinstall all
services"?
Yes
Check antenna
signal.
Try Software
download via PC
card.
Still no video?
Exchange DTV
unit. (DIgital unit
problem)
No
No
No
No
No
Yes
No
Yes
No
No
Yes
No
Yes
No
TROUBLE SHOOTING TABLE (Continued)
16
TROUBLE SHOOTING TABLE (Continued)
No picture
No SCART1
(AV1) output
No SCART2
(AV2) output
No S-Video
(AV3) output
Check all the settings microprocessor’s adjust process menu.
Is output at
pin (17) of
IC2521
normal?
Check the
IC2521 and
its
peripheral
parts.
Check the
IC2522, AV1
line (SC1-
OUT-V) and
their
peripheral
Is input at
pin(27) of
IC2521
normal?
Check the
AV1 line
(SC1-IN-V)
and their
peripheral
parts.
Is output at
pin (13) of
IC2521
normal?
Check the
IC2521 and
its
peripheral
parts.
Check the
IC2523,
(SC2-OUT-V)
and their
peripheral
parts.
Is input at
pins (5) and
(7) of IC2521
normal?
Check the
(SC3-IN-Y)
line, (SC3-
IN-C) line
and their
peripheral
parts.
No line
output
Is input at pin
(70)(72) of
IC801normal?
Check the
(SY-OUT)
line and
their
peripheral
parts.
Yes
No
Yes
No
Yes
Yes
No
No
Is input at pin
(73) of IC801
normal?
Check the
V-PAL line
and their
peripheral
parts.
No
No
No
TELETEXT
output
Is input at
pins (1), (2)
and (3) of
IC801
normal?
Check
IC801 and
its
peripheral
parts.
Yes
Is output at
pins (3), (5)
and (6) of
IC1630
normal?
Yes
Is output at
pins (57) ~
(60) of
IC1601
normal?
Check the
its line.
No
Yes
Is input at pin
(21) of
IC1601
normal?
Check
IC1601,
IC1604 and
their
peripheral
parts.
No
Yes
Check the its
line.
(RMD1/TXD1)
No
Is input at
pin(29) of
IC2521
normal?
Check the
AV2 line
(SC2-IN-V)
and their
peripheral
parts.
Yes
No
LC-22AD1E
17
LC-22AD1E
No picture
Becomes dark
Time passes,
becomes dark
Becomes white
Check all the settings microprocessor’s adjust process menu.
Is source GND
normal?
(SC4901,
SC4902)
Check SC4901,
SC4902 and
their peripheral
parts.
Is CSCOM
waveform
normal?
(SC4901 1/2
Pin)
Check IC4706,
IC4702, Q4701
and their
peripheral parts.
Is gate GND
normal?
(SC4501)
Check SC4501
and its
peripheral parts.
Is gate clock
(GCK) normal?
(SC4501 7Pin)
Check FL4505,
R4540 and gate
array peripheral
parts. (IC4512
5Pin)
Is VEE-6V
being
outputted?
(SC4501
16~19Pin)
Check lC4508
and its
peripheral parts.
Is VGH+34V
being outputted?
(SC4501 3/4Pin)
Check lC4507
and its
peripheral parts.
Vertical line
output
Is VSH+3.3V
being
outputted?
(SC4901
8/9Pin)
Check IC4703
and its
peripheral parts.
Yes
No
Yes
No
Yes
No
Yes
No
Is source clock
normal?
(SC4901 47Pin)
Check IC4512
and gate aray
peripheral parts.
Yes
No
Is output of LBR
normal?
(SC4901 10Pin)
Check R4574,
IC4512 and
their peripheral
parts.
No
No
No
Is GSP
waveform
normal?
(SC4501
5/15Pin)
Check FB4512,
FB4515 and
their peripheral
parts. (IC4512
7/3Pin)
Yes
No
No
TROUBLE SHOOTING TABLE (Continued)
18
No picture
Colour is
unusual
Picture image
is gloomy
No picture
image
inversion
Check all the settings microprocessor’s adjust process menu.
Is output of R00-
R07 , RE0-RE7
normal?
(SC4902)
Check
FL4506~4509,
R4554, R4661,
R4564, R4662,
and their
peripheral parts.
Is output of
G00-G07, GE0-
GE7 normal?
(SC4901/2)
Check R4569,
R4663, R4577,
R4664,
FL4510~FL4513
and their
peripheral parts.
Is VLS +13V
being
outputted?
Check IC4509,
IC4504 and
their peripheral
parts.
Is in/output of
SPIO and SPOI
normal?
(SC4901
44/45Pin)
Check R4570,
R4571, IC4512
and their
peripheral parts.
Gradation
defect
Is output VL0,
VL64, VL96,
VL128, VL160,
VL192, VL224,
VL256, VH0,
VH64, VH96,
VH128, VH160,
VH192, VH224
and VH256
normal? (SC4902
1~16Pin)
Check IC4701
and its
peripheral parts.
Yes
No No No
No
No
Is output of
B00-B07, BE0-
BE7 normal?
(SC4901)
Check R4580,
R4666, R4579,
R4665,
FL4514~FL4517
and their
peripheral parts.
Yes
No
TROUBLE SHOOTING TABLE (Continued)
LC-22AD1E
19
LC-22AD1E
No sound
No sound
from
speakers
No sound
from
headphone
No sound
from external
speaker
Check all the microprocessor’s adjust process menu.
Is pin (60) of
IC3501 at
"H"?
Check
IC3501 and
its
peripheral
parts.
Is pin (43) of
IC3501 at
"L"?
Check Q3508,
P101, P3501
harness and
their
peripheral
parts.
Is pin (70) of
IC3501 at
"H"?
No sound
from SCART1
output line
No sound
from SCART2
output line.
Is output at
pins (36) and
(37) of IC3202
normal?
Is output at
pins (33) and
(34) of IC3202
normal?
Yes
No
Are input and
output of
IC3202 as
specified?
Check
IC3202,
IC3403,
IC3402,
IC3405 and
their
peripheral
parts.
Yes
No
Are output at
pins (1) and
(7) of IC3408
as specified?
Check
IC3408 and
its
peripheral
parts.
Yes
No
Are output
between pins
(2) and (3)
and between
pins (6) and
(7) of P3402
as specified?
Check 1-Bit
amp and
their
peripheral
parts.
Yes
No
Is pin (48) of
IC3501 at
"H"?
Check
Q3401,
RY3401
and their
peripheral
parts.
Yes
No
Check
speakers and
their
peripheral
parts.
Yes
Yes
Yes
No
Is pin (58) of
IC3501 at
"L"?
Check
D3204,
Q3202 and
their
peripheral
parts.
Yes
No
Yes
Yes
Yes
Are input and
output of
IC3203 as
spedfied?
Check
IC3202,
IC3203 and
their
peripheral
parts.
Yes
No
Check the
headphone
and its
peripheral
parts.
No
Check Q3407,
RY3403 and
their
peripheral
parts.
Check
SCART1
periphery
parts.
Check
SCART2
periphery
parts.
No sound
from PHOTO
Audio out.
Is output at
pin (12) of
IC2510
normal?
Check the
"I2S-DA-
OUT" line.
Yes
No
Yes
Check
IC1101 and
its peripheral
parts.
Check the
"TBUS"
line and
their
peripheral
parts.
Is a speaker
setup of
"Speaker"
set as
"External" ?
TROUBLE SHOOTING TABLE (Continued)
20
TROUBLE SHOOTING TABLE (Continued)
No sound
TV sound
failure
DTV Sound
failure
Check all the settings microprocessor’s adjust process menu.
Is output at pin
(13) of tuner
(TU1101) as
specified?
Check the tuner
and its
peripheral parts.
Is input at pin (67),
(69) of IC3202 as
specified?
Are TV and INPUT1-4
output the correct sound?
Yes
Yes
No
Yes
Is S/PDIF audio
output working?
Yes
Does "Weak or missing
signal" dialogue
appears when antenna
cable removes?
Yes
Yes
If any service found by
performing "Reinstall all
service" ?
Yes
Try Software download
via PC card.
Exchange DTV unit.
(Digital unit problem)
Yes
Still no sound?
Yes
Yes
Still no sound?
Check the MAIN2
(POWER) part.
Check the S/PDIF line.
(P2502 & opposite side)
Exchange DTV unit.
(Tuner part problem)
Check antenna
signal.
No
Check cable insertion.
(SC2500 & opposite side)
No
No
No
No
Check IC3202,
X3201 and their
peripheral
parts.
Yes
Check Q1101,
Q1102, Q2200,
Q2201, Q2202,
Q2203 and their
peripheral parts.
LC-22AD1E
21
LC-22AD1E
ADJUSTING PROCEDURES
The best adjustment is made before shipping. If any position deviation is found or after part replacement is
performed, adjust as follows.
Preparation for adjustments
Use the dedicated AC adaptor or stable DC power supply.
AC adaptor: UADP-A056WJPZ
DC Power supply: 13V 7.0A
1.Adjustment procedure
• +B adjustment (adjustment at 5 V and 13V) → Enter the adjustment process mode.
→ Counter-bias adjustment.→ TAMP (contrast) adjustment. → White balance adjustment at the TV input.
2.Entering the adjustment process mode
•During after-sales service, the “MAIN POWER” key is turned on while pushing the “TV/VIDEO” and “MENU”
keys at the same time. (“K”, indicating the inspection processing mode, will be displayed at the upper left of the
screen.)
→ Next, “CH (Ù)” Key and “ (–)” keys are pushed at the same time. (The adjustment process mode screen
will be brought up.) To exit the adjustment process mode, press the “STANDBY-OFF” or “MAIN POWER-OFF”
key.
3. Key operation in the adjustment process mode
(1) Receiving channel selection
• The receiving channel UP/DOWN is performed with the “CH (ù)/(Ù)” keys.
One push......The UP/DOWN is performed per channel.
Continuous push......The UP/DOWN search is performed until a next receivable station is found.
• Direct channel selection using the 0 - 9 and 100 keys.
(2) Various adjustments
• The adjustment is preformed for each item with the cursor “ (')/(")” keys, cursor “ (Û)/(û)” keys,
“OK” key and “RETURN” key (LCD TV set or remote control).
• The adjustment item makes a toggle operation with the “(")” key input. (Next item)
• If the “(")” key is input while the bottom item is selected, it moves to the top item on the next page.
• When the cursor “(')” key is pressed, the item selected will move up to the previous item.
• When the “ (+)/(–)” keys or the cursor “(Û)/(û)” keys is pressed, the value of the selected item will be
changed up or down.
(3) Item selection
• If the item on the second page of the first layer is not I2C DATA and the “OK” key (the cursor “(Û)/(û)” keys
or the “ (+)/(–)” keys can also be used) is pressed, the top of each first page of the second layer will appear.
• To return from the second layer to the first layer, press the “RETURN” key.
22
4. Adjustment
(1) +B adjustment (R3717)
a) Receive the standard colour bar signal.
b) Connect a digital voltage meter to TP3722.
Adjust the voltage to 5.00V±0.02V using R3717 (trimming VR). Specified value: 5.00V±0.02V
Note: Since the reference voltage for all of the supply voltages is 5V, make sure you set the 5.00V
adjustment accurately.
(2) +B adjustment (R4525)
a) Receive the standard colour bar signal.
b) Connect a digital voltage meter to TP4531.
Adjust the voltage to 13.00V±0.05V using R4525 (trimming VR). Specified value: 13.00V±0.05V
Note: Since this is the reference voltage for the power supply for gradation, make sure you perform this
adjustment accurately.
(3) Counter-bias adjustment
• This adjustment minimizes the flicker on the screen.
• To set the COM BIAS shown on the first page of the adjustment
process, perform this adjustment at 50 Hz and 60 Hz,
respectively.
a) Refer to the previous item 2 on page 22 to Entering the
adjustment process mode.
The first page of the adjustment process, shown in the diagram
on the right (Fig. 3-1), will be brought up.
b) Select [G/A] on the second page of the adjustment process
using the cursor “(")” key, and press the “OK” key (Fig. 3-2).
(The second layer item appears.)
• Next, press the cursor ”(")” key twice, to bring up the third
page of the second layer (Fig.3-3).
• Select [G/A TEST PATTERN 1], on the third page.(In this
case, the set value should be [0].)
• Press the cursor “(û)” key repeatedly to set the value to
[14].(In this case, [14] is [dot reverse flicker pattern 2].)
• Press the “RETURN” key and the cursor “(')” key to return
to the first page of the adjustment process.
c) Select [COM BIAS 50] on the first page, using the cursor
“(')/(")” keys.
d) Press the cursor “(Û)/(û)” keys repeatedly. Stop pressing
it when the flicker on the screen is at the lowest level possible.
(In this example, the set value [COM BIAS 50] is [105].)
e) Next, select the first page, [COM BIAS 60], using the cursor
“(')/(")” keys.
Press the cursor “(Û)/(û)” keys repeatedly. Stop pressing
it when the flicker on the screen is at the lowest level possible.
(In this example, the set value [COM BIAS 60] is [108].)
LC-22AD1E
WLD 26 VER 1.000 DTV VER
INCH SIZE 22
MODEL AD1E
ERROR NO RESET 0
1BIT_AMP ERR 0
PUBLIC MODE OFF
COM BIAS 60 100
COM BIAS 50 100
PAL TAMP 20
SECAM TAMP 20
AV AMP 20
TAMP L 160
Y READ VALUE
TAMP M 168
Fig. 3-1
First page of the first layer of the adjustment process
WLD 26 VER 1.000 DTV VER
12C DATA 000000000000
12C DATA WAIT
MSP
VPC
G/A
TUNER
FLI12310
DSP
DOLBY
DELAY
TEXT
OTHERS
Fig. 3-2
Second page of the first layer of the adjustment process
23
LC-22AD1E
f) Press the cursor “(")” key and the “OK” key again, and select
[G/A TEST PATTERN 1], on the third page of the [G/A] second
layer on the second page. Then, use the cursor “(Û)/(û)” keys
to return the setting from [14] to [0].
g) Press the “RETURN” key and the “(')/(")” keys to return to
the first page of the adjustment process.
h) To exit the adjustment process mode, press the “STANDBY-
[G/A] : 3
G/A TEST PATTERN1 0
G/A TEST PATTERN2 0
G/A DATA 0000
G/A DATA WAIT
NTSC PWM FREQ 0D2
PAL PWM FREQ 0D2
NTSC PWM DUTY 0
PAL PWM DUTY 0
OFF” or “MAIN POWER-OFF” key.
Fig. 3-3
(4) TAMP adjustment
Third page of the [G/A] second layer
The screen contrast is adjusted.
a) Bring up the pattern shown in Fig. 4-2 using a signal or an RF signal generator that is producing the
standard colour bars.
WHITE
75%
Fig. 4-1
White 75% half-colour bar signal
TAMP adjustment pattern (PAL r = 1.00)
(WHITE 75%)
Fig. 4-2
b) Refer to the item 2 on page 22 to Entering the adjustment process mode.
This will bring up the first page of the adjustment process, shown in Fig. 4-3.
c) There is a [Y] shown on the bottom of the first page. See if the setting is between [160] and [168]. If it is,
it is OK. However, if the value is outside this range, it is necessary to readjust it.
d) Select [PAL TAMP] using the cursor “(')/(")” keys.
e) Press the cursor “(')/(")” keys and adjust the value of [Y] so that it is between [160] and [168].
(In this example, the value of PAL TAMP is [25].)
_______
_______
_______
P AL TAMP 25
SECAM T AMP 20
AV AMP 20
TAMP L 160
Y READ VALUE
TAMP H 168
Fig. 4-3
First page of the adjustment process
_______
_______
_______
P AL TAMP 25
SECAM T AMP 25
_______
_______
Fig. 4-4
First page of the adjustment process
f) Next, select [SECAM TAMP] using the cursor “(')/(")” keys.
• Use the cursor “(Û)/(û)” keys to manually set [SECAM TAMP] to the same value as previously seen
in PAL TAMP, [25] in the example above.
h) Press the “(')/(")” keys to escape.
i) To exit the adjustment process mode, press the “STANDBY-OFF” or “MAIN POWER-OFF” key.
24
(5) White balance adjustment
This TV input white balance adjusted.
This adjustment is performed when the LCD is replaced and the white balance must be set.
a) Bring up the pattern shown in Fig. 5-1 on AV1, AV2 or AV3 using a signal generator .
[FLI2310] : 2
R CUT OFF 0
G CUT OFF 0
WHITE 70% GRAY 40%
B CUT OFF 0
R DRIVE 100
G DRIVE 100
B DRIVE 100
MOTION THRESH 2F
VE GAIN2 2
NR ON
NR LEVEL 2
LC-22AD1E
White balance adjustment pattern
(PAL signal)
Fig. 5-1
Adjustment process menu [FLI2310]
Screen from the second page of the second layer
Fig. 5-2
b) Refer to the item 2 on page22 to Entering the adjustment process mode.
c) Use the cursor “(')/(")” keys to bring up the second page. Select [FLI2310] using the cursor
“(')/(")” keys, and then press the “OK” key.
You can also press the cursor “(")” key to bring up the second page of the second layer.
• In this case, although the screen from the second page of [FLI2310] is brought up (shown in Fig. 5-2),
make sure the CUT OFF settings for [R], [G], and [B] are [0] and the DRIVE settings for [R], [G], and [B]
are [100].
If they are not [0] and [100], set them.
• Use the cursor “(Û)/(û)” key to set them to [0] and [100].
d) Prepare and install a standard luminance meter (for example, a Minolta CA-110).
e) Use the cursor “(')/(")” keys to bring up the second page. Select “FLI2310”, and then press the
“OK” key. Press the cursor “(")” key to bring up the second page of the second layer.
f) Fig. 5-3 shows the standard adjustment value for the white balance.
g) Adjust the chromaticity of x and y for the six CUT OFF and DRIVE colour items on the screen shown in
Fig.5-2. Use the cursor “(Û)/(û)” keys so that the values shown for White 70% and Gray 40% are the
same as the values shown in Fig. 5-3.
• In this case, each of the set values of R, G, and B is out of [0] or [100].
x y y(ref)
WHITE 70% 0.278 0.283 154
GRAY 40% 0.257 0.264 1.797
Adjustment range ±0.002
Inspection range ±0.003
Fig. 5-3
White balance adjustment values
*1.The adjustment should be performed after a 30-minute aging.
*2.The CUT OFF value should be adjusted within the range of ±0 ~ 25.
The DRIVE value should be adjusted within the range of ±0 ~ 25.
h) To exit the adjustment process mode, press the “STANDBY-OFF” or “MAIN POWER-OFF” key.
25
LC-22AD1E
5. Lamp error detection
1) Function description
This LCD colour television has a function (lamp error detection) that turns off the power automatically, for
safety, if a problem occurs with a lamp or a lamp circuit.
If there is a problem with a lamp or a lamp circuit or if a lamp error is detected for some other cause, the
following will occur.
(1)The power is turned off about 15 seconds after the power to the TV is turned on. (The power LED on
the front of the TV will be changed from green to red, and it will flash three times repeatedly.)
(2)If the protective function described in (1) is repeatedly activated five consecutive times, you will not be
able to turn on the power. (The red power LED will flash three times, repeatedly.)
2) Countermeasures
1. Confirmation after the lamp error detection is deactivated
When the power is turned off due to the lamp error detection function as described above, turn off
the [power] while the power LED is red. Then, when the “TV/VIDEO” key and the “MENU” key are
held down and the “MAIN POWER“ key is pressed, the [inspection process] mode will be entered
and “K” will be displayed. Next, press the “ (-)” key and the “(Ù)” key at the same time to
enter the [adjustment mode].
Then, you can check the operation to see if the lamp and lamp circuit are abnormal.
See if [ERROR NO RESET] in the first page of the adjustment is set to 1 or more.
If it is 1 or more, it means that a lamp error has been detected.
2. Resetting the lamp error count
After you have finished checking whether the lamp and lamp circuit are abnormal, reset the lamp error
count.
Select [ERROR NO RESET] in the first page of the adjustment process, and reset it to [0] using the
cursor “(Û)/(û)” keys.
WLD 26 VER 1.000 DTV VER
INCH SIZE 22
MODEL AD1E
ERROR NO RESET 0
1BIT_AMP ERR 0
PUBLIC MODE OFF
COM BIAS 60 100
COM BIAS 50 100
PAL TAMP 20
SECAM TAMP 20
AV AMP 20
TAMP L 160
Y READ VALUE
TAMP H 168
Reset to "0"
Fig. 5-1
First page of the first layer of the adjustment process
26
6. Values set at factory shipment
LC-22AD1E
ITEM INITIAL VALUE
LAST CH AV1
LAST POWER OFF
FLASH BACK AV1
Volume 20
Picture
Contrast 30
Colour 0
Black level 0
Sharpness 0
Red-blue 0
Green 0
Tint 0
Sound
Sound via TV
Headph.vol 30
Loudsp. Sound Stereo
Headph. Sound Stereo
AV audio sig. Sound1+2
Maximum volume. 60
Sound wide. off
Treble 0
Bass 0
Balance 0
Speaker Detachable
Programmes
Country (E) Germany
Country (K) UK
Store prog. position 1
Name ALL CH DELETE
Colour System ALL CH PAL
Sound System (E) ALL CH B/G
Sound System (K) ALL CH 1
Skip ALL CH OFF
Features
Brightness bright
Cool climate off
V.Position 0
Rotate horizontally off
Rotate vertically off
Auto power off off
Position buttom
Sound info yes
Time no
Alarm time no
Sleep time no
Child lock All CH Cancel
For all programmes (Child lock)
Password (Child lock) 1234
A V Connections
Signal type(AV1) CVBS
AFC (AV1) Mode1
AFC (AV2(Y/C)) Mode1
AFC (AV2(CVBS)) Mode1
All no
Colour system(AV1) Auto
Colour system(AV2(Y/C))
Colour system(AV2(CVBS))
AV control voltage no
RGB on-screen display
For decoder connected to AV1
Sound from AV1 Dec
Timer functions
Time --:--:- Switch off no
Alarm timer no
Alarm volume 0
Language (E) Deutch
Language (K) English
WIDE MODE Panorama
WSS(Auto) Panorama
Character set (TEXT) West Europe
•ADJUSTMENT PROCESS
MODEL (E) AD1E
MODEL (K) AD1K
ERROR NO RESET 0
1BIT_AMP ERR 0
PUBLIC MODE OFF
Auto
Auto
no
All CH Cancel
27
LC-22AD1E
7. ADJUSTMENT PROCESS MODE MENU LIST
28
LC-22AD1E
29
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