Akai LTC-32R5X3HCM User manual

LTC32R5X3HCM

LTC-32R5X3HCM
SERVICE MANUAL
Only For Professional Service Personnel Using

CONTENTS
1. --------------------------------OPERATION PARTS 2
2. ---------------------SYMPTOMS and CORRECTIONS 7
3. --------------------MANI BOARD FAULT JUDGMENT 9
4. --------POWER SUPPLY BOARD FAULT JUDGMENT 17
1
5. -----------------------------SOFTWARE UPGRADE 18
6.23 ------
8.SPECIFICATIONS ----------------------------------- 28
7. ----------------------MAIN ELECTRIC PARTS LIST 27
SOFTWARE DATA'S RESTORATION AND SOFTWARE DATA'S ADJUSTMENT
9.29 ACCESSORIAL CIRCUITR DRAWING and CONFIGURATION DRAWING --

OPERATION PARTS
2
Rear View of TV Set
: PC AUDIO IN
①
: AC IN(100V-240V)
②
: POWER SWITCH
③
: HDMI1 IN
④
: HDMI2 IN
⑤
⑥
⑦: S-VIDEO IN
⑧: AV CVBS IN
①
② ③ ④ ⑤ ⑥ ⑦ ⑧ ⑨ ⑩ 12
14
: Lorder that DISC eject/close
11
: VGA IN
15
13
⑨: AV-L IN
⑩: AV-R IN
: SCART1
11
: RF IN
13
: USB jack
14
: SCART2
12
15
: MMC/SD/MS socket
16
16
Right View of TV Set

Remote Control Unit
3
12
3
5
4
11
12
7
10
9
8
6
16
13
14 15
17
18
1.POWER
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 throu gh the input source to selec t PC、TV、AV、
SVIDEO、SCART、SCART2、HDMI、HDMI2、DVB-T or DVD.
17.INFO
16.SLEEP
18.P.RATIO
It set the sleeper time for turning off TV.
Press to select picture ratio for screen.
Press to display program or channel's
information.
OPERATION PARTS

4
1
23
4
8
5
6
9
7
10
11
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 word.
Sub page.
These keys are effective in teletext signal.
11.
10.Page up.
Page down
TELETEXT OPERATIONS
OPERATION PARTS

5
2
3
4
6
8
10
11
9
12
14
15
13
1
5
7
1.DVD SETUP
2.USB/CARD
3.DISPLAY
5.REPEAT
6.EJECT
7.ZOOM
8.MENU/PBC
9.TITILE
11.SUBT
10.SEARCH
4.AUDIO
12.PREV
13.NEXT
15.FF
14.FR
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.
Button (reserved function)
recalls your preferred subtitle
Previous
Next
Fast reverse
Fast forword
(1)Press to switch between document and file.
Remote Control Unit(DVD input)
OPERATION PARTS

3
1.AUDIO/LANG
2.EXIT
3.P+/P-
5.SLEEP
6.TV/RADIO
7.FAV
8.PAUSE
9.LANG
11.SUBTITLE
10.EPG
Change audio mode:left,right,Mono,Stereo.
Back to parent menu
Select the program
Press to set sleeper time for turning off TV.
Switch to TV or RADIO.
Open/close favorite channels group function.
Display preview program
1
5
4.DVB MENU Pop DVB-T OSD menu
7
9
11
12
6
8
10
Screen Pause (DVB mode)
Sound language selection for DVB-T sound.
Recalls your preferred subtitle in digital mode.
2
4
12.RED/GREEN
YELLOW/CYAN
For DVB-T,these keys are effectve only in DVB-T signal.
6
Remote Control Unit(DVB input)
OPERATION PARTS

SYMPTOMS and CORRECTIONS
Please make these simple checks as indicated (●) on the chart for the respective symptoms and their
possible remedies.
No picture, no sou nd
Poo r sound, picture 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 ba rs
Picture rolls vertically
Poo r colour
No colou r
Misoperation of Rem ote control
Rem ote control unit no op eration
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 for TV SET
7

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 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 key s
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).
8
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
D 1 2 , 5 V S p i n h a v e 5 V v o l t a g e ？
If the internal power, the 13PIN port don't
connect with AD board ,is it have 5V?
U21output 3.3V？U24 output 1.3V？
Mainten anc e inter nal
p o w e r m o d u l e
Mainten anc e U2 1 and
U24 networ k mod ul e
Do it can dis pla y by the
remote contro lle r or key ?
Check U21、U24 modue
an d re l a t i v e ne t w or k
Check U6 power supply 、
resetting 、the cry stal is OK?
Check 5Vi pin and 12VIp in
outp ut 5V and 12V？
Check STB pin is H le vel and
i n te rn a l po w e r m o d u l e
OK
N Y
N Y NY
N Y
N Y
Panel cable have a good touching and
i t h a v e a g o o d c o n n e c t i o n ?
LCD panel is OK ?
Rep lace the LC D
CN17 component have
w e l d e d t o g e t h e r ?
Repla ce cable and
connect corre ctly
Weld the CN17 component
Repla ce main IC 9E19
Y N
N Y
Y N
IF the Display is not normal picture
9
1.display part(skewbald display)

10
MANI BOARD FAULT JUDGMENT
Panel cable have a good touching and
i t h a v e a g o o d c o n n e c t i o n ?
BKL pin of CN25 is H lever?
Maintenance Q27component
a n d r e l a t i ve n e t w o r k
Y N
N
Display black
Panel cable have a good touching and
i t h a v e a g o o d c o n n e c t i o n ?
( B e l o w t h e 3 2 ” L C D p a n e l . )
Connect correctly
N Y
If the jumper put the right place ,
or is it h av e th e ju mp e r？
Check U28 component
and rela tiv e network
Put t he J umper in
the right posit io n .
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
a n d a g o o d c o n n e c t i o n .

Getting rid of audio's trouble
audio-part（no sound）
11
MANI BOARD FAULT JUDGMENT
Setting of Volume 、MUTE is normal
It have the audio signal utput?
No audio
CN32 or CN22supply power normally?
CN20 port have the audio signal?
Maintenance its power supply circuit
Maintenance Peripheral audio equipment
The PIN8 of U32 >8.5 V ?
Or the PIN6 U22>3V?
The PIN1 an d 9 of U32 have the input ？
or U2 2 PIN4 an d 12 of U2 2 ha ve the input？
The pi n 1 and 7o f U1 3 ha ve signal output ?
Amp ou tpu ts have
s i g n a l o r n o t
Reseting again
Check the speaker park.
M a i n t e n a n c e t h e r e l a t i v e
component of this pinAnd network
U22 or U32 have damaged
Maintenance(correlative organ &
network of playing and input)
Check U13 output to U22 or connected part
The PIN2 and PIN6 of U13
h a v e s i g n a l u n p u t ?
Maintenance U13
and related part net
Maintenance the main
board and R266，R260
N
Y
N
Y
Y
N
N
Y
N Y
Y N
N Y N Y
Y N

The RF signal is normal.?
TN1 supply power normally ?
th th
The 4 and 5 pin
of TN1 have data?
PIN 12 o f T N1have
the output sig nal?
N Y
NY
Y N
In the TV mode, it don't
search tv and no picture
Getting rid of function's trouble
1.fuction part(TV video)
12
MANI BOARD FAULT JUDGMENT
Y N
Mainten anc e E56、
Q16、L9 and rel ative
c o m p o n e n t .
Main tenance TN1 and the
rela tiv e p erip heral c ir cuit.
Mainten anc e
U 1 4、Q 1 7
M a i n t e n a n c e i t s
pow er supp ly ci rcu it
In the PC mode ,have it ?
th
The 11 PIN of TN1 have output signal ?
Main tenance R302、
C 1 8 6 、C 1 1 6
N Y
NY
In the TV mode, it don't
search tv and no picture
Getting rid of function's trouble
2.fuction part(TV audio)
TN1 have damaged ，
r e p l a c e t h e T N 1
Refere nce service
flo w of no sound
Mai nt ena nce The
RF si gnal is normal.

Getting rid of function's trouble
3.fuction part（PC）
13
MANI BOARD FAULT JUDGMENT
The PIN8 of U32 >8.5 V ?
Or the PIN6 U22>3V?
Inp ut sign al is
normal or no t
NY NY
In the PC mode
Los s color or
color is wr ong
VS an d HS sign al
are stabl e or no t
Pict ur e jitter
Picture is not middle
No signal
Auto tune
System configure
is wrong and reset
Input the right signal
OSD configure isnot matched ,
please input timing again
Maintenance the
circuit of VS、HS
Maintenance
VS、HS circuit
By Peripheral equipment the signal is OK?
U2 power supply is OK?
Maintenance U12、Q14、FB12
a n d re l a ti v e c o m p o n e n t
N Y
YN
If Don't display the picture
Getting rid of function's trouble
4.fuction part（dual HDMI）
Maintenance U2 peripheral circuit
and the output signal is ok?
Maintenance Peripheral signal equipment and
replace the input signal of Peripheral equipment
In HDMI mode

Getting rid of function's trouble
5.fuction part（YPBPR for DVD）
14
MANI BOARD FAULT JUDGMENT
Getting rid of function's trouble
6.fuction part（AV）
The PIN8 of U32 >8.5 V ?
Or the PIN6 U22>3V?
By Perip heral equipment
t h e s i g n a l i s O K ?
NY NY
In YPBPR mod e
If Don 't di splay
t h e p i c t u r e
By Perip heral equipment
t h e s i gn al i s O K ?
YPBPR don 't ha ve
th e au d i o ou t
U5 PIN8,13，14 of U5
have the output signal ?
Main tenance R146，
R1 48 and th em is
Maintenance or replace the
Peripheral signal equipment
Maintenance or replace the
Peripheral signal equipment
Maintenance U15 power， PIN1，
15 of U15 have the good choice .
Maintenance the component
between PIN8，13，14 of the U15
NY
The PIN8 of U32 >8.5 V ?
Or the PIN6 U22>3V?
By Perip heral equipment
t h e s i g n a l i s O K ?
NY NY
In YPBPR mod e
If Don 't di splay
t h e p i c t u r e
By Perip heral equipment
t h e s i gn al i s O K ?
YPBPR don 't ha ve
th e au d i o ou t
U5 PIN8,13，14 of U5
have the output signal ?
Main tenance R146，
R148 and them is OK
Maintenance or replace the
Peripheral signal equipment
Maintenance or replace the
Peripheral signal equipment
Maintenance U15 power， PIN1，
15 of U15 have the good choice .
Maintenance the component
between PIN8，13，14 of the U15
NY
The PIN8 of U32 >8.5 V ?
Or the PIN6 U22>3V?
By Perip heral equipment
t h e s i g n a l i s O K ?
NY NY
In AV mod e
If Don 't di splay
t h e p i c t u r e
By Perip heral equipment
t h e s i gn al i s O K ?
AV don' t ha ve
the au di o ou t
Examine and repair the C110
A n d h a v e t h e s i g n a l ?
U10 PIN5，PIN 14 of the
U10 have the sig nal ?
Examine and repair or replace
the Peripheral signal equipment
Examine and repair or replace
he Peripheral signal equipment
Replace the C110
R e p l a c e t h e I C 9 E 1 9
Replace the main CMOS chip of 9E19
NY
Examine and repair U10 power supply ， PIN9，
PIN10 of the U10 is right or replace U10
Examine and repair
its front-end circuit
YN

15
MANI BOARD FAULT JUDGMENT
Getting rid of function's trouble
7.fuction part（dual SCART）
By Perip heral equipment
t h e s i g n a l i s O K ?
NY NY
If Don 't di splay
t h e p i c t u r e
By Perip heral equipment
t h e s i gn al i s O K ?
In SCAR T source ,
have the au dio ou t
Maintenance E1,E2,E3,R44,R47 and
the relative netwouk have the signal ?
PIN 1，PIN12 of U10
have th e signal?
Maintenance or replace the
Peripheral signal equipment
Maintenance or replace the
Peripheral signal equipment
Replace the corresponding organ
Replace the IC 9E19
NY
Maintenance U10 power supply ， PIN9，
PIN10 of the U10 is right or replace U10
stick up for front electrocircuit
YN
Getting rid of function's trouble
8.fuction part（DVB-T）no DVB-T'S sound
The PIN8 of U32 >8.5 V ?
Or the PIN6 U22>3V?
DVB-T no audi o
The PIN8 of U32 >8.5 V ?
Or the PIN6 U22>3V?
DVB-T ha ve pi ct ur e?
C265,C 266,C 267,C268 have the output signal ?
Replace ZR3916X main IC
Y
N
Maintenance the U20 power supply and
relative network or replace the U20
Maintenance the front-enc curcuit
Y
N
Refenence DVB-T no picture Park
E41,E42have the outputsignal ?
N
Y
N
PIN2，PIN15 of U10 have the signa l?
Maintenance U10 supply power ，
PIN9，PIN10 of U10.the choose
right or replace U10 component.
Y
+-In Dou bl e SCAR T mod e

Getting rid of function's trouble
9.fuction part（DVB-T）no DVB-T'S picture
16
MANI BOARD FAULT JUDGMENT
Maintenance Q23，U23
and U25 have damaged?
U25 have the 3.3V?
DVB-T don't display the picture .
U15 cr ysta l have th e shake ？？ PIN 22 of the
U15 resettin g pin have th e signal ?？betw een
the U15 and I2 C of U18commucatio n is OK？？
Mainten anc e U26 and the relative network
Maintenance the PIN22 of X2，
R335，R336，U15 or replace U15
N
Y
N
L13，L14，L15，L16
port have the output
Replace ZR3916X main IC
Y
N
U26 have 1.8V?
Maintenance X3，R323 relative
c o m p o n e n t a n d n e t w o r k
U18 crystal have the shake?
resetting pin have the signal ?
RN9，RN10，RN11 the
rule signal output ?
Y
N
N
Y
Mai nt ena nce RN 9, RN 10, RN11, wel d ag ai n
Maintenance C109，E10,E11,E12,
U5,U5's PIN1，PIN15 select level
N
Y
Y

17
POWER SUPPLY BOARD FAULT JUDGMENTPOWER SUPPLY BOARD FAULT JUDGMENT
Circuit system drawing for power board
AC INPUT
Cell of
Prevent
thunder
EMI circ uit
Commute ,filter Commute ,filter Output
PFC cell PWM controller
Level off voltage,
round p athway
Sampling
+24V(+12V)
+ +
Protect flowing by
Protect short circuit
Protect outputting voltage
Way of check up and servicing
1.No inputting voltage
2.Input fuse open circuit
No Turning
on the TV
Familiar Fault Cause
1.Check input power supply
2.Select ON according to power switch and standby.
3.Connect power supply wire and connecter newly.
4.Raplace the same type and spec fuse
1.Brightness is ajusted to
black
2.DC output wire and con-
necter is no good.
3.No PSON signal of turning
on the TV
Black Screen
1.Adjust brightness to mezzo state.
2.Check DC output wire and connecter.
3.Check voltage on Cn4 STB PIN,if this voltage
is less than 2.5V,please check TV main board.
Familiar Fault , Way of check-up and servicing
P o w e r ,
commutation

SOFTWARE UPGRADE
18
ATV SOFTWARE UPGRADE
1.Install software.
1.1.Copy folder of MSTAR ISP Tool(V4.xxx) to PC.
Advice to English WINDOWS XP.
1.2.Install MSTAR Driver from folder FTC100103
(MSTAR Driver). commonly,Install automatically
after it connect the Update Adaptor Board to PC.You
operate by cue.It will install total 3 SYS type drive
files.
2.Update
2.1.Turn off the TV
2.2.Conect the Update Adaptor Board to VGA socket
of TV and PC.
2.3.Run software of ISP_Tool V4.xxx.exe.
2.4.Turn on the TV.Wait Connecting communications,
until it display "Device Type....".
2.5.When if it can't diplay frondose type device,
you can turn off the TV,then turn on the TV
again.Or press connect item on top of software menu
for connecting communication again.
2.7.Press to confirm Read item, select updating fils.
2.6.Press to confirm Read item on top of software
menu.