Akai pdp4295ed User manual

AKAI Dlu u u'/V
SERVIC

CONTENTS
Page
1 . IMPORTANT INFORMATION 1
2. GENERAL INFORMATION 2
3. SAFETY PRECAUTIONS g
4. SPECIFICATION
5. PERIPHERAL EQUIPMENT CONNECTING
6 . CIRCUIT DESCRIPTION
DC PO ER SUPPLY
VIDEO DISPLAY BOARD
7. CHAPTER BLOCK DIAGRAM
BLOCK DIAGRAM
AC FILTER
EMI BOARD
DC PO ER BOARD
VIDEO BOARD
AM PLIFIER BOARD
TUNER BOARD
ASSEMBLY DRA ING
8. TROUBLE SHOOTING FLO CHART
. ASSEMBLY CHART
. SET TEST CHART
. VIDEO DISPLAY CHART
9. CLEANING AND MAINTENANCE HANDY TIPS
4
5
6
7
8
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10
11
12
13
14
15
16
17
18
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1

IMPORTANT INFORMATION
A R N IN G : 1. This is a Class A and Class B product;. In a domestic environment this
productmay cause radio interference in which case the user may be
required to take adequate measures.
2. TO REDUCE THE RISK OF FIRE AND ELECTRIC SHOCK, DO NOT
EXPOSE THIS PRODUCT TO RAIN OR MOISTURE.
IM PORTANT
A This lightning flash with arrowhead symbol, within an equilateral triangle,
is intended to alert the user to the presence of uninsulated
"dangerous voltage" within the product's enclosure thatmay be of sufficient
magnitude to constitute a risk of electric shock.
!The exclamation point within an equilateral triangle is intended to alert
the user to the presence of important operating and maintenance
(servicing) instructions in the literature accompanying the appliance.
2

GENERAL INFORMATION
IM PORTANT:
hen the setis switched on , do notshiftor m ove the setaround .
Som etim es itm ay develop an unevenness in colour in som e parts
of the screen . This can be elim inated by sw itching off the setw ith
the m ain pow er button (rear site) and waitforlO m inutes before
sw itching on again . If the situation rem ains, callfor Service.
Front View
- + < > DD ©
0 0 0 0 0 0 • 0 •
I ----- Pow er
------- LED
I ---------- M enu
1 ------------- Enter
I----------------Select Up
I ------------------ Select Down
I ____________ Volume +
------------------------Volume -
Rear View
3

SAFETY PRECAUTIONS
Please read the follow ing direction carefully before using this m achine.
. Read each direction carefully, and retain for future reference.
. Please keep the manual well-.
. Please follow the information to operate this machine.
. Clean the machine with a slightly damp soft cloth . Do not use spray detergent
and abrasive solvent;. It can damage the machine screen coating layer.
. Place the machine on a solid base to avoid dropping and danger.
. For good ventilation of the machine, please do not place the machine on
surfaces such as bed, sofa, or rug.
. Before operating the machine, make sure that the operating voltage of your
machine is identical with that of your local power supply, if there is any
unclear, please contact with sales dealer.
. Use only the accessory power cord designed for this product to prevent shock.
. Do not put anything under the power cord to avoid tramping .
. If using the same power source with other equipments, please make
sure the total current does not over 15A.
. Never attempt to repair a defection of the machine by yourself. Always
consult a skilled machine service personnel.
. hen the following situations happen, please contact
qualified engineer.
A . The power cord or the power socket has damages.
B . If any liquid or solid object fall into the machine through the
ventilation holes.
C . Expose the machine to rain or excessive moisture.
D . The function does not follow the user manual.
E . The machine has ever been dropped or the glass has been broken.
F . The function of machine has clear changes.
. The plasm a panel has been b u ilt using extrem ely precise and
sophisticated technologies; M ore than 99.99% o f its pixels are
effective. A m inute num ber o f pixels are m issing or constantly lit.
. D o not display the sam e picture (pattern )fo r a long period o f tim e
(D on't exceed 20 m in.) . T his m ay cause im ages rem ain .
. N o further notice w ill be provided if the specification and design
subjects have been changed .
. T o release the battery o f rem ote controller after long tim e
replacem ent (over 1 m onth) and to avoid m aking
destruction of rem ote controller by liquid.
. han none operation the product storagr is suggested not
. exced max of 6 months.If it is the exceed the suggested
.storage period,the product should be activated for 24 hrs.
.To ensure the quality of the product.
4

SPECIFICATION
(1)input signal : S-Video N composite N Component N Analog RGB N DV N NTSC RF
(2)video signal : 0.7Vp-p
(3)scan frequency : Analog RGB auto-sync H from 30 to 80KHz
V from 60 to 85Hz
DV auto-sync H from 30 to 80KHz
V from 60 to 85Hz
Component : 480i N 480P N 576i N 576P N 720P N 1080i
Composite : Video sync
S-Video : Y-C separate sync
TV : NTSC 60Hz
(4)up data terminal : RS-232 DB-9 P N
(5)Power supply : AC100-240 Volts universal
(6)Power consumption : 330W (Full White Pattern)
(8)Signal cable : 15P N D-SUB " DV -D " S-Video ' RCA Jack ' Speaker Jack "
AV Shielded Video cable
(9)OSD controls :
Video a section :
<1>Picture: H/V Position N Brightness N ContrastN Sharpness N
Color N Tint N Frequency N Phase N Auto mage
<2>Advanced: Gamma N Color Temperature N Color Management.
<3>Source: Analog RGB N DV N Component1 N Component2 N
S-Video ' Video ' TV
<4>Function: Scaling N Zoom N White Pattern N Close Caption N
[P P]Source N [P P]Size N [P P]H/V-Position
<5>Utility: Language N Video Standard N DPMS N
[OSD]H/V-Position N [OSD]Time O utN
Picture Scrolling N Load Factory
<6>TV: Tuner Select N Channel N MTS N Channel Scan N V-chip
Sound a section :
VolumeN TrebleN BassN 4 steps BBE SelectsN SRS virtual Surround N
MTS STEREO Decoder
5

PERIPHERAL EQUIPM ENT CONNECTING
IB
r 1
COM2 COM1 S-V/DVI AV/VGA
HH © HH @ HH e HH ® HH ®
A N T /C A B LB -2I2N
— INPUT
itenna/C able
m
Dl>
D V I-D O utput
A nalog GB O utput
VCR
1=1 ««•
re - DVD S-Video Output
COMPONENT
Y Pb(Cb) Pr(Cr
• • •
CM OFF
\ /
DVD Video Output
DVD Y Pb(Cb) Pr (Cr) Output
DVD Audio Output
ANALOG
DVI
INPUT VGA IN S-VIDEO
INPUT
S-232
IN PU T
Amp lifier
P
Audio Inpu
6

CIRCU IT DESCRIPTION
1. DC PO ER SUPPLY
This is the DC power supply inside the PDP, in which Cn1 connected
with alternating current (AC) through inductance filter (L1),
rectification bridge (BD1) IC, transformer (T1), D3, D4, to CN2 output
with 5V and 12V direct current;. The range of the AC output is from 90V to
264V and frequency is from 50Hz to 60Hz. The largest detrition
7

2. VIDEO DISPLAY BOARD
This is the signal inside the PDP and audio device disposition.
1) It can receive composite signal including R.G.B.H.V . contrast
signal, D V I dig ita l signal, AV color distinction signal and
S-Video ..... etc.
R.G.B.H.V .& Y Pb Pr :The signal is input from (15 PIN) J1 & J1
to U6 to perform contrast signal ,then
transform to d igita l signal and enter to U29 ,
the signal is passer to U33 fo r the output o f
visual signal.
D V I : D ig ita l signal is inp ut from P1 the managed by U6 and passed
to U29 ,the signal is passed to U33 fo r the output o f visual
signal output:.
AV & TV : AV& TV signal enters from J12 & JP18 to U46 to
perform signal, then transform to U47 to decode perform
sig n a l, then transform to U49 to deinterlace perform signal
and enter to U29 , the signal passed to U33 fo r the output
o f visual signal.
S-Video : S-Video signal inp u t from J12 to U47 to decode perform
signal ,then transform to U49 to deinterlace preform
signal and enter to U29 , the signal passed to U33 fo r the
output o f visual signal.
to U5 fo r visual production and after deposition, it w ill pass
to U7 fo r signal compensation and to U9 fo r visual signal
deposition output.
2) Audio is input from J3, J8 and from U62 to perform
pre-production. Then, the audio signal is passed to U61 SRS process
fo r the signal output by J4 and J9.
3) hen audio signal the J4 passed to Amplify fo r the fin a l output:.
8

CHAPTER BLOCK DIAGRAM
1 . BLOCK DIAGRAM
9