Akai LCT2660 User manual

Catalogue
1. FRONT & BACK VIEW………………………….. p1
2. FUNCTION BOARD POSITION…………………..p2
3. SPEAKER & KEY- BOARD………………………..p3
4. I/R- RECEIVER & TUNER- BOARD……………...p4
5. AUDIO –BOARD & A/D- BOARD........………….. p5
6. I/O PORT OF A/D BOARD…………………………p6
7. POWER BOARD……………………………………p7
8. WIRES……………………………………………….p8
9.ASSEMBLY/DISASSEMBLY INSTRUCTION OF
THEBBOARD…………………………………………….p9
10 TROUBLE SHOOTING LIST………………………p13
11. BLOCK DIAGRAM…………………….…….…….p15

Front view
Back view
1

2
FUNCTION BOARD POSITION
12 4
37
6
5
ʳ
˄Ηໞ؂(SPEAKER)ʳ
˅Η᝶ሽሁࣨʳ (KEY BOARD)ʳ
ˆΗદ؆ᒵ൷گሽሁࣨ(I/R RECEIVER BOARD)ʳ
ˇΗ࠰ᓳᕴሽሁࣨ(TUNER BOARD)ʳ
ˈΗଃயሽሁࣨ(AUDIO BOARD)ʳ
ˉΗᣊֺᑇۯሽሁࣨ(A/D BOARD)ʳ
ˊΗሽᄭሽሁࣨ(POWER BOARD)
ʳ

SPEAKER
KEY- BOARD
3

I/R- RECEIVER
TUNER- BOARD
4

AUDIO -BOARD
A/D- BOARD (ANALOG/DIGITAL BOARD)
5

I/O PORT OF A/D BOARD
2
12 11 10 98
7
6
5
4
3
1
1ΗP/A WIRE CONNECTER 7ΗSCART INPUT
8ΗT/A WIRE CONNECTER
9ΗA/A WIRE CONNECTER
10ΗDVI INPUT
11ΗD-SUB(VGA) INPUT
12ΗPC AUDIO INPUT
2ΗK/A WIRE CONNECTER
3ΗA/P WIRE CONNECTER
4ΗAV I N P U T
5ΗS-VIDEO INPUT
6. Y/Pb/Pr &Y/Cb/Cr INPUT
6

POWER BOARD
24V-OUTPUT
12V-OUTPUTAC-INPUT
7

WIRES
ˊʳ
ˉʳ
ˈʳ
ˇʳ
ˆʳ
˅ʳ
˄ʳ
1ΗPOWER JACK
2ΗK/A WIRE : (KEY BOARD ÙA/D BOARD)
3ΗA/A WIRE : (AUDIO BOARD ÙA/D BOARD)
4ΗT/A WIRE : (TUNER BOARD ÙA/D BOARD)
5ΗP/A WIRE : (PANEL ÙA/D BOARD)
6ΗA/P WIRE : (A/D BOARD ÙPOWER BOARD)
7ΗI/P WIRE : (INVERTER BOARD ÙPOWER BOARD)
ʳ
8

POWER BOARD Assembly/Disassembly Instruction
STEP 1Κ
1ΕTurn off the main power switch on the back
of the set and unplug the power cord from
the outlet.
2ΕRemove the 18pcs of screws (M4*10) on
the edge of the back cover.
3Ε ˥˸˸ʳ˻˸ʳ˜˂ˢʳʳ˶˸ʳ˴˷ʳremove the
2pcs of the screws (M4*8)
4ΕLift up the back cover but without
removing it. Unplug the power connector
lines for the Power Jack. Upon detach their
connector lines and remove the back cover.
9
STEP 2Κ
1ΕUnplug the AC -in power connector
lines for the Power Jack (3PIN).
2ΕUnplug the two power connector lines
for the DC 12V OUT A/P wire connector
(10PIN) & DC 24V OUT I/P wire
connector (10PIN).
3ΕChange the power board, and remove
the 4pcs of screws (M2.5*4)

A/D BOARD Assembly/Disassembly Instruction
10
STEP 1Κ
1ΕRemove the 6pcs screws (M2*4) on the A
board cover.
/D
2ΕChange the A/D board cover , remove the
4pcs screws (M3*6) on the A/D board cover
right side.
STEP 2Κ
1ΕUnplug the signal transmission line for the
A/A wire connector (7PIN).
2ΕUnplug the signal transmission line for the
T/A wire connector (7PIN).
3ΕUnplug the signal transmission line for the
K/A wire connector (6PIN)
4ΕUnplug the signal transmission line for the
A/P wire connector (9PIN).
5ΕUnplug the signal transmission line for the
P/A wire connector (30PIN).
6ΕTo change the A/D board and remove the
4pcs of screws (M2.5*4)

AUDIO BOARD & TUNER BOARD Assembly/Disassembly Instruction
STEP 1Κ
1ΕRemove the 4pcs screws (M2*4) on the A
board cover.
/D
2ΕUnplug the signal transmission line for the
A/A wire connector (7PIN).
3ΕUnplug the signal transmission line for the
speaker connector (2PIN)).
4ΕTo change the A/D board, remove the 4pcs
of screws (M2.5*4)
STEP2Κ
1ΕRemove the 1pcs screw (M4*25) on the
Tuner cover
2ΕUnplug the signal transmission line for the
T/A wire connector (12PIN).
3ΕChange the Tuner board and remove the
3pcs of screws (M2*4)
11

KEY BOARD & IR RECEIVER BOARD Assembly/Disassembly Instruction
12
STEP1Κ
1. Unplug the signal transmitting line for the
Key board K/A wire connector (2PIN).
2. To change the key board, remove the 2pcs o
screws (M3*6)
f
STEP2Κ
1 Unplug the signal transmitting line for the IR
receiver board K/A wire connector (4PIN).
2. Change the IR receiver board and remove
the 2pcs of screws (M3*6)

13
TROUBLE SHOOTING LIST
ITEM
PROBLEM
REASON SOLUTION/
CHANGE PART REMARK
POWER NO
WORKING
1.Power wire not connect
well with the connecter.
2. Battery no electric. of
the Remote control
3. Power damage.
4. A/D board damage.
1.Power wire re-connect
with the connecter
again.
2. Change new battery.
3. Change new power.
4. Change the A/D board.
ʳ
HAVE SOUND
BUT NO
IMAGE
1. Inverter damage or
connecter loose
2. Tuner damage.
3. A/D board damage.
4. Cable wire connect
wrong position
1. Re-connect the wire or
change new inverter.
2. Change new tuner.
3. Change new A/D board.
4. Try to connect right
position again.
ʳ
AUDIO/
SOUND
HAVE IMAGE
BUT NO
SOUNDʳ
1. Tuner damage.
2. A/D board damage.
1. Change new tuner.
2. Change new A/D board.
ʳ
PICTURE SHIFT
& UNCLEAR
1. Set up the wrong
frequency of picture
signal.
1. Set up the right
frequency and
auto-adjust the TV.
PC MODE
FUNCTION
PICTURE IS
ABNORMAL OF
PIP/POP
FUNCTION
ʳ
1. A/D board damage. 1. Change new A/D board. ʳ
KEY
FUNCTION
CHANNEL UP
& DOWN NOT
WORKING
1. Not scan the channel .
2. Key-board damage.
3. A/D board damage.
1.Scan the channel .
2.Change new key board.
3. Change new A/D board.
ʳ

14
TROUBLE SHOOTING LIST
ITEM
PROBLEM
REASON SOLUTION/
CHANGE PART REMARK
REMOTE
CONTROL
NOT
WORKING
1.Battery no electric.
2.Not scan the channel.
3.I/R-receiver board
damage.
4. A/D board damage.
1. Change new battery.
2. Try to scan the channel .
3. Change the new I/R
receiver board.
4. Change new A/D board.
ʳ
ONLY GET
THE
CHANNEL1~12
1. Change the Air/CATV
mode wrong function
position.
1. Try to set up the
Air/CATV mode function
again.
CAN’T SHOW
ALL CHANNEL
NUMBERS ON
TV FUNCTION.ʳ
1. Not scan all channels or
you set up something
wrong with channel
memory last time.
˄ˁ Try to scan the channel
again.
ʳ
PICTURE
NOT
PERFECT
1.TV cable wire quality is
bad or cable connect
not well.
2 The cable signal input is
weak.
1. Change the good quality
cable wire.
2. Increase to set up the
signal cleaner.
VIDEO/
IMAGE
PICTURE IS
ABNORMAL
AND IMAGE
IS BAD
SERIOULY.ʳ
1. LVDS cable wire not
connect well.
2.A/D board damage.
3.LCD panel damage.
1.Re-connect the cable
wire or change new
one.
2. Change the A/D board.
3. Change the new LCD
panel.

BLOCK DIAGRAM
1515