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Akai LTC-26R5W1HCM User manual

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LTC-26R5W1HCM
SERVICE MANUAL
Only For Professional Service Personnel Using
CONTENTS
1
15
16
19
23
22
24
2
4
8
---------------------
--------------------------------
--------------------
-----------------------------
------
8.SPECIFICATIONS -----------------------------------
--
--------
----------------------
ACCESSORIAL CIRCUITR DRAWING and CONFIGURATION DRAWING
SOFTWARE DATA'S RESTORATION AND SOFTWARE DATA'S ADJUSTMENT
POWER SUPPLY BOARD FAULT JUDGMENT
MANI BOARD FAULT JUDGMENT
SYMPTOMS and CORRECTIONS
MAIN ELECTRIC PARTS LIST
SOFTWARE UPGRADE
OPERATION PARTS1.
2.
3.
4.
5.
6.
7.
9.
OPERATION PARTS
Right View of TV Set
2
Rear View of TV Set
TV/AV
MENU
CH+
CH-
VOL+
VOL-
TV/AVTV/AVTV/AVTV/AV
MENUMENUMENUMENU
CH+CH+CH+CH+
CH-CH-CH-CH-
VOL+VOL+VOL+VOL+
VOL-VOL-VOL-VOL-
5
6
: PC AUDIO IN
①
: HDMI1
②
: HDMI2
③
: VGA IN
④
: S-VIDEO IN
⑤
⑥
⑦: AV-L
⑧: AV-R
⑨: SCART1
⑩: SCART2
①
② ③ ④ ⑤ ⑥ ⑦ ⑧ ⑨ ⑩ 12
14
: RF IN
11
: MMC/SD/MS
13
: DVD DISC eject/close
14
: AC IN(100V-240V)
12
11
15
: AV
15
13
: USB
ITEM
1
5
6
2
4
FUNCTION DESCRIPTION
Press to select the input source.
Press to bring up the main menu to the
Press to increase or decrease the
Switch ON the LCD TV when at standby
Switch on AC main power supply or
TV/AV
STANDBY
Main Power
MENU
3
Press to scan through channels.To scan
Quickly channels,press and hold down
-CH+
-VOLUME+
BUTTON NAME
Screen.
Either +/- button.
sound level.
Mode or vice versa
Switch off AC main power supply
Switch
Remote Control Unit
3
1.STANDBY
2.MUTE
3.0-9
5.SWAP
6.MTS
7.VOL- or VOL+
8.CH+ or CH- + + --
9. or
11. or
10.OK
4.DIGITAL
12.LCD MENU
13.INPUT
15.S.MODE
14.P.MODE
Mute or restore sound.
Number selection.
Press to return to the previously viewed program.
Multi-sound mode selection.
Press these buttons to lower or raise the volume.
LEFT key or RIGHT key.
Confirmation key.
UP key or DOWN key.
LCD TV Menu enter/exit
Picture mode selection.
Sound mode selection.
Press this button to switch on the TV when in standby mode
or to enter standby mode
Press this button to enter a program number for multiple
program channel such as 2-1,etc.
Press these buttons to select channels in
ascending or descending order.
Press to cycle through the input source to select PC、TV、AV、
SVIDEO、SCART、SCART2、HDMI、HDMI2、DVD.
17.INFO
16.SLEEP
18.P.RATIO
It set the sleeper time for turning off TV enter standby.
Press to select picture ratio for screen.
Press to display program or channel's
information.
OPERATION PARTS
2
3
5
11
8
16
15
12
13
14
17
18
1
4
7
10
9
6
4
1.TTX
2.HOLD
3.CANCEL
5.INDEX
6.LIST
7.REVEAL
8.SUB.PG
9.COLOR
4.SIZE
Display teletext infomation or exit teletext mode.
Hold on or off for current page display.
Cancel for teletext.
Change display size in teletext.
Request the index page.
List for teletext.
Reveal or hide the hidden teletext information.
Sub page.
These keys are effective in teletext signal.
Page up.
Page down
TELETEXT OPERATIONS
OPERATION PARTS
1
23
4
8
5
6
9
7
10
11
10.
11.
5
Remote Control Unit(DVD input)
OPERATION PARTS
1.DVD SETUP
2.USB/CARD
3.DISPLAY
5.REPEAT
6.EJECT
7.ZOOM
8.MENU/PBC
9.TITILE
11.SUBTITLE
10.SEARCH
4.AUDIO
12.PREV
13.NEXT
15.FF
17.STOP
14.FR
16.PLAY/PAUSE
DVD SETUP enter/exit.
Press to select these modes such as DVD,USB or CARD.
Program info display.
Press to select audio mode.
Repeat
DVD disc eject/close.
Press to zoom screen size.
DVD Disc menu/VCD Disc menu
(1)Press to enter to title.
Press to search the program
Press to select the subtitle
Previous
Next
Fast reverse
PLAY/PAUSE
Fast farward
STOP
(2)Press to switch between document folder and file.
2
3
4
6
16
8
10
11
9
12
14
15
13
1
5
7
17
SYMPTOMS and CORRECTIONS
Please make these simple checks as indicated (●) on the chart for the respective symptoms and their
possible remedies.
No picture, no sound
Poor sound, picture OK
Poor picture, sound OK
Weak picture
Blurred picture
Double image
Lines in picture
Distorted picture
Weak reception on some channels
Horizontal bars
Picture rolls vertically
Poor colour
No colour
Misoperation of Remote control
Remote control unit no operation
On Screen Display Control outside the screen
Symptoms
Possible Remedies
Try different channel, if OK, probably station trouble
Check aerial connections on back of set
Check aerial for broken wires
Re-orient aerial (if indoor type)
Probably local interference, such as an appliance
Adjust fine tuning control
Adjust brightness control
Adjust contrast control
Check if station is broadcasting colour
Adjust colour control
Check if system is correctly set
Check if on/off switch is "on"
Check batteries in remote control unit
SYMPTOMS and CORRECTIONS for TV SET
6
CORRECTIONSSYMPTOMS
NO POWER Check to make sure that the power connection is correct
NO picture
Make sure the connection between the player and the TV is correct
Make sure that the TV is in good working condition
Check to make sure that the power connection is correct
No sound
Make sure the connections between the player and other devices are correct
Make sure that the TV and AMP are in good working condition and properly set up
Check that the disc is properly inserted
Fails to play
Fails to respond to
remote control
Picture disturbance
Fails to work with keys
Clean the disc
Remove obstacles between remote control and unit.
Aim remote control at the sensor on the front panel
Check batteries and replace them if necessary.
Check the disc for dirt and scratches. Clean or replace disc
Shut down the unit, wait ten seconds and restart the unit
Power surges or brown outs or other electrical phenomena. Shut down the
unit, wait ten seconds restart the unit.
Your DVD player is a basic part of your home theater. The technical features on this machine are far
superior to any previous
Audio-visual equipment. This completely new digital technology has compressed the audio visual
effect of cinema into a
12cm-diameter disc, which is the same size as a CD, The Dolby digital out put in particular can provide
a prominent digital surround effect. It is also compatible with existing CD,CD-R and CD-RW(It is not
compatible with some CD-RW discs).
7
SYMPTOMS and CORRECTIONS for DVD PLAYER
SYMPTOMS and CORRECTIONS
MANI BOARD FAULT JUDGMENT
Getting rid of power's trouble
Getting rid of display's trouble
In stand-by mode, the negative port of
D12, 5VSpin have 5Vvoltage ?
If the internal power, the 13PIN port don't
connect with AD board ,is it have 5V?
U21output 3.3V?U24 output 1.3V?
Maintenance internal
p ower m od ule
Maintenance U21 and
U24 network module
Do it can display by the
remote controller or key ?
Check U21、U24 modue
and relative network
Check U6 power supply 、
resetting 、the crystal is OK?
Check 5Vi pin and 12VIpin
output 5V and 12V?
Check STB pin is H level and
internal power module
OK
N Y
N Y NY
N Y
N Y
Panel cable have a good touching and
it have a good connection ?
LCD panel is OK ?
Replace the LCD
CN17 component have
welded together?
Replace cable and
connect correctly
Weld the CN17 component
Replace main IC 9E19
Y N
N Y
Y N
IF the Display is not normal picture
8
1.display part(skewbald display)
9
MANI BOARD FAULT JUDGMENT
Panel cable have a good touching and
it have a good connection?
BKL pin of CN25 is H lever?
Maintenance Q27component
and relative network
Y N
N
Display black
Panel cable have a good touching and
it have a good connection?
(Below the 32” LCD panel.)
Connect correctly
N Y
If the jumper put the right place ,
or is it have the jumper?
Check U28 component
and relative network
Put the Jumper in
the right position .
Y N
Display white
Getting rid of display's trouble
2.display part(bleaching screen)
Getting rid of display's trouble
3.display part(nigrescence screen)
Make the Panel cable good touching
and a good c onnec tion.