Akai LTC-16RSX2M User manual

LTC16R5X2M

LTC-16R5X2M
SERVICE MANUAL
Only For Professional Service Personnel Using

CONTENTS
CONTENTS
1. --------------------------------OPERATION PARTS 2
2. --------------------SYMPTOMS and CORRECTIONS 6
3. --------------------MANI BOARD FAULT JUDGMENT 8
4. -----------------------------SOFTWARE UPGRADE 13
5.19 -----------------
7.SPECIFICATIONS ----------------------------------- 21
6. -----------------------MAIN ELECTRIC PARTS LIST 20
8.22
SOFTWARE DATA'S RESTORATION
ACCESSORIAL CIRCUITR DRAWING and CONFIGURATION DRAWING --
1

2
OPERATION PARTS
BUTTON NAME FUNCTION DESCRIPTION
Top View of TV Set:
Switch ON the LCD TV when at standby mode or vice versa.
TV/AV Press to select the input source.
STANDBY
-CH+Press to scan through channels.To scan quickly channels,press and hold
down either +/- button.
Press to bring up the main menu to the screen.
MENU
-VOLUME+Press to increase or decrease the sound level.
1.TV IN
2.HeadPhone OUT
3.PC Audio IN
4.AV-R IN
5.AV-L IN
6.AV CVBS IN
7.S-VIDEO IN
8.SCART
9.VGA IN
10.DC IN 12V
11.Lorder that DVD DISC eject/close
12.USB jack
13.MMC/SD/MS socket
Rear View of TV Set
1 2 345678910
11
1312

/
3
12
3
5
4
6
7
8
18
9
11
10
12
14
13
15
16
17
OPERATION PARTS
Remote Control Unit
1.STANDBY
2.AUTO
3.0-9
4.-/- -
5.
6.CH+ or CH-+ -
7.VOL- or VOL+
8.DIS PLAY
9.ENTER
10.
Pre ss th is butto n to switc h on the TV when in standby mode or to ente r
sta ndby mode
Pre ss to do auto config uratio n dire ctly for PC-RGB.
Number selectio n.
To enter a program number for multipe program channel such as 2-1,etc.
Pre ss to retu rn to the previo usly vie wed program.
Pre ss th ese butto ns to lower or raise th e volume.
Pre ss to displa y progra m or channel's inform atio n.
Confir matio n key
LEFT/RIGHT
11.
12.LCD MENU
13.INPUT
14.P.MODE
15.S.MODE
16.MUTE
17.ASPECT
18.SLEEP
LCD TV Menu enter/e xit .
Pre ss to sycle th rough th e diffr ent pic tu re mode.
Pre ss th is butto n to select th e desire sound mode.
Mute or re store sound
Pre ss to sele ct picture ratio fo r screen.
UP/DOWN
Press these buttons to select channels in ascending or
descending order.
/
Press to cycle through the input source to select TV、
AV、S-VIDEO、SCART、PC or DVD.
P r e s s t h e s e buttons t o s e t t h e s l e e p e r timer
f o r t u r n i n g o f f T V .

4
1
6
3
2
5
4
7
8
TELETEXT OPERATIONS
OPERATION PARTS
1.TEXT
2.HOLD
3.INDEX
4.SIZ E
5.REVEAL
6.SUB.PG
7.CH++
8.CH--
Hold on or off fo r curr ent page dis play.
Request th e index page.
Change display size in teletext.
Reveal the tele text informatio n.
Page up.
Page down.
Switc h on or off the te le text mode.
Sub page.

5
1
2
5
3
7
6
8
10
11
9
12
14
15
13
16
18
19
44
17
Remote Contrller Unit(DVD INPUT)
1.EJECT
2.TIT LE
3.MENU/PBC
4.DVD SETUP
5.
6.
7.AUDIO
8.
9.
10.GOTO
DVD disc eject/close.
(1). Pre ss to ente r to title .
DVD DISC menu/VCD DISC menu
DVD setup en te r/ex it
PLAY/PAUSE
STOP
Pre ss to sele ct audio mode.
Fast reverse
Fast forword
Pre ss to scan pro gram.
(2). Pre ss to switc h betw een document and file .
11.ANGLE
12.
13.
14.ZOOM
15.SUBTIT LE
16.PROGRAM
17.USB/CARD
18.REPEAT
19.AB
Pre vio us
Next
Pre ss to zoom screen size.
Recalls your prefe rr ed subtitle .
Pre ss to progra m order th at you want to play program.
Pre ss to sele ct these modes such as DVD,USB or CARD.
Repeat
Pre ss to sele ct shoot's angle of playing program.
It re peat pla ying between poin t A that you select from pla yin g
pro gra m and poin t B th at you select fr om playing program.
OPERATION PARTS

6
Please make these simple checks as indicated (●) on the chart for the respective symptoms and their
possible remedies.
No picture, no sound
Poo r sound, pi ctur e OK
Poo r picture, sound OK
Weak pictur e
Blurred picture
Double image
Lines in picture
Distor ted pictur e
Weak recept ion on som e cha nn els
Horizontal bars
Picture rolls vertically
Poo r colour
No colou r
Misoperation of Rem ote con trol
Rem ote control unit no operation
On Screen Displ ay Cont rol 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
SYMPTOMS and CORRECTIONS for TV SET

7
CORRECTIONS
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 wor ki ng con dition and prope rly set up
Check that the disc is properly inserted
Fails to play
Fails to respond to
remote control
Picture disturbance
Fail s 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).
SYMPTOMS and CORRECTIONS
SYMPTOMS
NO POWER
SYMPTOMS and CORRECTIONS for DVD PLAYER

Check(F1/3A)for 12V
Power supply trouble
MANI BOARD FAULT JUDGMENT
Turn on the pow er Che ck pow er supp ly IR ca n't tur n
on TV set
Cha ng e F1 (3A )Che ck F1
whe ther OK
F1 damaged whe n
Turn on the TV set
Check power supply net
(U3 ,U 4 )f ol lo w i n g F 1
OK
Che ck the
L E D r e d
Che c k th e po w er
supply and commu-
nic atio n of U13(Fla sh)
Check power supply and
12C of U11(24C32)
Y
1)Check power and reset signal of U10(CT 622)
2)Check Y1 working normal
Che ck the IR boa rd
OK
N
N
Y
Y Y
N
8

MANI BOARD FAULT JUDGMENT
Display trouble
The PIN8 of U32 >8.5 V ?
Or the PIN6 U22>3V?
Pic ture not in center
PC mod e
Pic ture dit herin g
Check RGB signal
of U10/CT 622E
Check the Hs and VS
Auto adjust
Check the RGB circuit
Color auto adjust
Auto adjust
PC no signal
M i s s color,
deflection color
Check HS/VS
Check the circuit
o f H S /V S
9
OK
Che ck the input
circu it of signal
Che ck U10(CT62 2E)
1.pow er supp ly
2.cloc k signa l
3.reset si gnal
4.timing log ic of
pow er
Check the video source
No sig nal
INPUT
Function trouble

Function trouble(ATV)
MANI BOARD FAULT JUDGMENT
TV can't search any
Channel or no pic ture
Check the soure of RF
Check power
circu it Q11,L18
Cha ng e tun er
Che ck the RF signa l
Check the 5V on
P I N 7 o f T 1
Check 12C of T1 Pin4/Pin5
Che ck the si gna l
out of T1 Pin8
Check the circuit
of 12C and U15
N
Y
N
Y
N
Y
N
Y
Check the circuit
of SW1/TDA9885/6
Che ck the ci rcu it Q14
Cha ng e to TV
Check the CVBS out of
T DA 9 8 8 5 /6 P i n 1 7
Check the in put sig nal
o f C T 6 2 2 E P i n 7 8
Check the software
w h e th e r c o rr e c t
Che ck the sour ce
s e l c t i n g T V
Upload software
N
Y
N
Y
N
Y
N
Y
OK
10

Repair th e
circ uit of Q9
Bla ck scre en Exceptio nal screen
Check th e BLON Back li ght is li ghtin g
Check th e VCC
o f p a n e l
Check the line of panel
Soft is corre ct
Check LVDS
sig nal li ne
Check the timing
o f p o w e r
The panel is correct
R e -we l d i n g
U10(CT622E)
OK
N
Y Y
Y
Y
Change th e line
Upload software
Change panel
OK
Re-weld in g Pin 188–
Pin213 of U10(CT622E)
N
OK
Channel panel
N
Y
Display trou bl e
OK
Y
Uplo ad software
Check th e panel
connecte d rig ht
VCC of panel
i s c o r r e c t
C h e c k t h e
jumper of CN5
Y
Y
N
N
N
N
N
Display trouble
MANI BOARD FAULT JUDGMENT
11

Audio trouble
MANI BOARD FAULT JUDGMENT
No audio
Check the audio source
Turn large the vol um e
Che ck the spe aker
The audio input is ok
Volu me is turn to 0
Voice is muted
Cn26 wi th
aud io signal
Turn off mute modle
N
Y
N
Y
N
Y
N
N
Check the circuit
o f S T BY \M UT E
Rep air the pow er
supp ly ci rcuit of U1
PIN 8 of U19(TDA1517)
i s h i g h l e v e l
Check the power
o f a m p l e
Check the input signal of
U19(TD A1517 )PIN 1/PIN 9
Che ck the ci rcu it
of aud io inp ut
Check the power and
circuit aroundU16(SC7314S)
N
Y
N
Y
N
OK
12

SOFTWARE UPGRADE
ATV SOFTWARE UPGRADE
1.PC setting
1.1.Please run operation system of windows XP,advice
using English windows XP.
1.2.Please open the computer's hardware device manager,
set the Baud Rate of port COM1 and port COM2 to
115200. Please use default setting about other setting
items.
1.3.Open control panel of windows XP,enter view item
of folder option,cancel selecting hidden extension of
known file type.
1.4.Copy CT622_ISP_Tool folder into PC. Cancel all
file's attributes of folder.
1.5.Run CT633ISP.exe,Press Ports and select Com1.
13
1.7.Press Option and Verify,then select Verify ON.
1.6.Press Baud and select 115200.

SOFTWARE UPGRADE
14
1.8.Press Option and Flash,and select Option Item
as fig,then press OK.
2.Connect PC and TV.
2.1.Turn off the TV.
2.2.Connect update match board into PC and TV main
board’s Cn23 or TV main board’s VGA socket.

SOFTWARE UPGRADE
15
2.3.Turn on the TV.
3.Update
3.1.If ICO UART Online is UART Offline,Press UART
Offline to change to UART Online.If it can't change
to UART Online,Connection is badness.
3.2.Select Boot Code fils “622P_EN_MX_PM.BIN” by
ICO of Boot Code item.

SOFTWARE UPGRADE
16
3.3.Select MCU fils “CTBxxx.BIN” by ICO of MCU
fils item.
3.4.Press EnterISP,then press Run,until display finished
on Window of SOFT.

SOFTWARE UPGRADE
17
3.5.Then press EnterISP again,then Press Auto,Update
start.
3.6.Update finished until it display “program finished”
and “Verify finished” on ISP status.
Warning:Don't turn off TV while Updatetng! And don't
do other opration.If update is discontinuity,you can
continue by pressing Retry.
Note:This software need restoration after update.

DVD SOFTWARE UPGRADE
SOFTWARE UPGRADE
1.Del all files in USB.
2.Copy update files into USB,the file name must be MTK.BIN.If it isn't this file name,this file name
must be rename to MTK.BIN.
3.Turn on the TV Combo,select working in DVD input,and take out all disc and take out all USB and
take out all CARD.
4.Insert USB with update file,select reading USB.
5.After it read update file,it have prompt on TV Combo,then you must operate according to prompt.
If it is automatically Updatting,please can't do any operation,If it have cue that you press play key to
continue update,please press play button on R/H to update.
6.You can't do any operation while updatting,until TV-Combo restart DVD working screen,update is
finished,then you take out USB.
Warnning:you can't do any operation while updatting,and it can't quit DVD working!If update is
discontinuuty,DVD will not work.
Note:This software need restoration after update.
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