(1) The design of this product contains special hardware,
many circuits and components specially for safety
purposes. For continued protection, no changes should be
made to the original design unless authorized in writing by
the manufacturer. Replacement parts must be identical to
those used in the original circuits. Service should be
performed by qualified personnel only.
(2) Alterations of the design or circuitry of the products should
not be made. Any design alterations or additions will void
the manufacturer's warranty and will further relieve the
manufacturer of responsibility for personal injury or
property damage resulting therefrom.
(3) Many electrical and mechanical parts in the products have
special safety-related characteristics. These
characteristics are often not evident from visual inspection
nor can the protection afforded by them necessarily be
obtained by using replacement components rated for
higher voltage, wattage, etc. Replacement parts which
have these special safety characteristics are identified in
the parts list of Service manual. Electrical components
having such features are identified by sh ading on the
schematics and by ( ) on the parts list in Service
manual. The use of a substitute repl acement which does
not have the same safety characteristics as the
recommended replacement part shown in the parts list of
Service manual may cause shock, fire, or other hazards.
(4) Don't short between the LIVE side ground and
ISOLATED (NEUTRAL) side ground or EARTH side
ground when repairing.
Some model's power circuit is partly different in the GND.
The difference of the GND is shown by the LIVE : ( ) side
GND, the ISOLATED (NEUTRAL) : ( ) side GND and
EARTH : ( ) side GND.
Don't short between the LIVE side GND and ISOLATED
(NEUTRAL) side GND or EARTH side GND and never
measure the LIVE side GND and ISOLATED (NEUTRAL)
side GND or EARTH side GND at the same time with a
measuring apparatus (oscilloscope etc.). If above note will
not be kept, a fuse or any parts will be broken.
(5) If any repair has been made to the chassis, it is
recommended that the PDP voltage setting should be
checked or adjusted.
(6) When service is required, observe the original lead dress.
Extra precaution should be given to assure correct lead
dress in the high voltage circuit area. Where a short circuit
has occurred, those components that indicate evidence of
overheating should be replaced. Always use the
manufacturer's replacement components.
(7) Isolation Check (Safety for Electrical Shock Hazard)
After re-assembling the product, always perform an
isolation check on the exposed metal parts of the cabinet
(antenna terminals, video/audio input and output terminals,
Control knobs, metal cabinet, screw heads, earphone jack,
control shafts, etc.) to be sure the product is safe to operate
without danger of electrical shock.
a) Dielectric Strength Test
The isolation between the AC primary circuit and all metal
parts exposed to the user, particularly any exposed metal
part having a return path to the chassis should withstand a
voltage of 3000V AC (r.m.s.) for a period of one second. (.
. . . Withstand a voltage of 1100V AC (r.m.s.) to an
appliance rated up to 120V, and 3000V AC (r.m.s.) to an
appliance rated 200V or more, for a period of one second.)
This method of test requires a test equipment not generally
found in the service trade.
b) Leakage Current Check
Plug the AC line cord directly into the AC outlet (do not use
a line isolation transformer during this check.). Using a
"Leakage Current Tester", measure the leakage current
from each exposed metal part of the cabinet, particularly
any exposed metal part having a return path to the chassis,
to a known good earth ground (water pipe, etc.). Any
leakage current must not exceed 0.5mA AC (r.m.s.).
However, in tropical area, this must not exceed 0.2mA AC
(r.m.s.).
Alternate Check Method
Plug the AC line cord directly into the AC outlet (do not
use a line isolation transformer during this check.). Use
an AC voltmeter having 1000Ω per volt or more
sensitivity in the following manner. Connect a 1500Ω
10W resistor paralleled by a 0.15µF AC-type capacitor
between an exposed metal part and a known good earth
ground (water pipe, etc.). Measure the AC voltage
across the resistor with the AC voltmeter. Move the
resistor connection to each exposed metal part,
particularly any exposed metal part having a return path
to the chassis, and measure the AC voltage across the
resistor. Now, reverse the plug in the AC outlet and
repeat each measurement. Any voltage measured must
not exceed 0.75V AC (r.m.s.). This corresponds to
0.5mA AC (r.m.s.).
However, in tropical area, this must not exceed 0.3V AC
(r.m.s.). This corresponds to 0.2mA AC (r.m.s.).
AC VOLTMETER
(HAVING 1000 /V,
OR MORE SENSITIVITY)
1-4 (No.52149)
0.15 F AC-TYPE
GOOD EARTH GROUND
1500 10W
PLACE THIS PROBE
ON EACH EXPOSED
METAL PART
1.2INSTALLATION
1.2.1 REQUIREMENTS FOR SETTING
The following minimum space must be kept when a PDP is installed.
(The recommended distance should be from the most projected portion when a PDP is inclined.)
An insufficient space reduces cooling efficiency and raises the internal temperature. If the internal temperature rises over the reference
value, the temperature sensor works to turn the power off for protecting the main body. Therefore, vents on the backside of the main
body such as heat dissipation vents must not be blocked, and sufficient spaces for heat dissipation must be kept around the main body.
Methods of
Installation
1
Hanging from
a wall
[Horizontal]
2
Hanging from
a wall
[Vertical]
10cm
10cm
10cm
Front
Wall
Wall
20cm
15cm
10cm10cm
10cm
FlankRemarks
FrontWall
5cm
Wall
5cm
It is necessary to set the cooling fan
where install each side causes high
temperature within a PDP and may
damage the inner circuit.
Do not prevent the radiation of heat
from back, top and flank sides of a PDP.
Preventing the radiation of heat from
each side causes high temperature
within a PDP and may damage the
inner circuit.
Install a PDP in a place where is well
ventilated.
Ambient temperature should be within a
range of 0 ~40 .
An exclusive fixture
(option) should be used.
3
Suspension
from a ceiling
4
Desktop
10cm
10cm
Wall
Wall
15cm
10cm10cm
15cm
10cm10cm
Front
Front
The structure and strength of the wall
where a PDP is installed should be
checked beforehand so as to install the
PDP safety without any accident.
Wall
5cm
A PDP should be installed on a rigid
floor or stand.
In order to prevent a PDP from turning
over by an accident or earthquake,
safety measures should be considered.
Wall
5cm
(No.52149)1-5
1.2.2 PRECAUTION DURING NOTES FOR TRANSPORTATION
When transporting the display unit, pressure exerted on the
internal PDP (Plasma Display Panel) due to improper handing
(such as tossing and dropping) may cause damages even when
the unit is carefully packed. To prevent accidents from occurring
during transportation, pay careful attention prior to delivery such
as through exchanging the handing instructions to transporters.
Ensure that the following requirements are met during
transportation, as the PDP of this unit is made of glass and
therefore fragile.
(1) Avoid vibrations and impacts
The unit may be broken if it is toppled sideways even when
properly packed. Ensure that the unit is carried by at least
2 persons and pay careful attention not to exert any
vibration or impact on it.
(2) Do not place equipment lay a PDP on its side.
A PDP should always be placed upright during both
transportation and safekeeping. Don't lay it on its side. The
panel of a PDP is very fragile to the impact in the horizontal
direction.
When a car carries a PDP, load it on board the car in
parallel with the moving direction of the car. Don't lay
several PDPs one on top another.
During safekeeping, don't lay more than two PDPs one on
top another even if they are kept upright.
1.2.4 RETAINED-IMAGE / BURN-IN ON SCREEN
Like CRTs, "burn-ins" may occur when a same image is
continuously displayed over an extended period of time.
As this may also shorten the life span of the PDP. Therefore, turn
off the display when not in use, scroll the screen, make use of
screen-savers, or allow even distribution on the display by
inverting the brightness, switching to complementary colors or
inverting animated images at periodic intervals.
As burn-in is more likely to occur with high brightness and
contrast settings, try to use neutral gradations or medi um tone
colors.
Burn-in dose not occur in the case of animated images.
When switching to another image after continuous display of the
previous image, residual images may become prominent, as
luminance in a part of the display is higher then the other parts.
This is not a defect but is because due to the discharge surfa ce
of the lighted portion has become being relatively activated and
its luminance higher than the unlighted parts.
1.2.5 BRIGHTNESS CHANGE IN THE SCREEN
In order to save the power consumption, the power is controlled
(with APS function) depending on the brightness of the screen.
For this, the brightness may change after a short time when the
picture of the screen is changed. However, this phenomenon is
not a trouble.
1.2.3 PRECAUTIONS ON INSTALLATION
To get good heat dissipation from the rear.
This Monitor is not equipped with cooling fans because it is
designed to operate quietly.
If you install the Monitor in such a way as not instructed,
additional methods are required to cool down the Monitor.
A : Horizontal Installation (Normal)
In the case, the slots and openings in
the cabinet protect the Monitor from
overheating.
* See also "Requirements forsetting"
on page 6 in the instruction.
B : Vertical Installation
It is required to attach the Cooling Fan Unit (TS-C01FANG : option).
* Refer to the following figure for how to attach the cooling fan unit.
An option terminal is exclusively
for a cooling fan. Please do not
use it for connection with other
apparatus.
Cooling Fan Unit
(Option)
POWERAC INAUDIO
L
R
OUT
MAKE
WIRED
RS-232C
REMOTE
L
SPEAKER OUT
AUDIO
IN
RGB A
OPTION
1.2.6 INFRARED RAYS
Because the near infrared rays (800nm~1000nm) radiate from
the panel face, the neighboring infrared ray remote controllers,
infrared communication systems, etc. may malfunction. In these
cases, take a measure to prevent the trouble to be caused by
direct rays (or reflected rays) from the screen by changing the
direction of the screen face or keeping a safe distance between
a PDP and other devices.
1.2.7 OPTICAL FILTER (FRONT FILTER)
Avoid placing the unit under direct sunlight over a prolonged
period of time. This may cause the optical filter to deteriorate in
quality and color.
Clean the filter surface by wiping it softly lightly with outing
flannels a soft and lightly fuzz cloth (such a flannel).
Do not use solvents such as benzene or thinner to wipe the filter
surface. This may cause the filter to deteriorate in quality or the
coating on the surface to come off.
As the filter surface is fragile. Do not scratch or hit it with hard
materials.
1.2.8 NOTES PRECAUTIONS FOR REPLACEMENT OF
EXTERIOR PARTS
Take note of the following when replacing exterior parts (back
REAR COVER, FRONT PANEL, OPTICAL FILTER):
Do not exert pressure on the front of the PDP(glass surface).
Pay careful attention not to scratch or stain the front of the PDP
(surface) with hands.
When replacing exterior parts, the front of the PDP should be
placed facing downward. Place a met, etc. underneath to avoid
causing scratched to the front surface.
However, never use materials that are too soft (such as blanket
cloth). If replacement is made with the PDP surface facing
downward and in contact with the blanket, pressure may be
exerted on the PDP, thus causing damages to it.
2.2MAIN DIFFERENCE LIST
ItemGM-V42PCEGM-V42PCEB GM-V42PCEGGM-V42SGM-V42UBGM-V42UG
ColourSilverSilverGraySilverSilverGray
RadiationClass AClass BClass AClass AClass BClass A
Input Terminal VIDEO ANot availableNot availableNot availableAvailableAvailableAvailable
VIDEO BNot availableNo t avai lableNot availableAvailableAvailableAvailable
COMPONENT
/ RGB B
Not availableNot availableNot availableAvailab leAvailableAvailable
Note :
• GM-V42PCE, GM-V42PCEG and GM-V42PCEB do not have the following input terminal-VIDEO A, VIDEO B and COMPONENT
/ RGB B.
• You need to install the video input unit (IF-C42P1C), which is separately purchased, to select VIDEO A, VIDEO B and
COMPONENT(or RGB) as the input.
• To use the COMPONENT/RGB B terminals either as COMPONENT input terminal or as the RGB input terminal, you need to set
RGB/COMPO. correctly. (Refer to the INSTRUCTIONS)
2.3TECHNICAL INFORMATION
2.3.1 PDP (PLASMA DISPLAY PANEL) DESCRIPTION
2.3.1.1CAUTION
Although a PDP is made with highly advanced precision, this does not necessarily mean all of the cells operate correctly.
The PDP inevitably includes cell that do not light or light constantly.
If the specifications (PDP performance) are unclear at the time of shipment, an adequate description cannot be conveyed to the
customer. In event of inquiries from customers regarding PDP performance, check the following specifications in order to offer a
suitable reply.
2.3.1.2CELL ARRANGEMENT
The PDP is constructed of front and rear glass substrates provided with respe ctive discharge electrod es. Between these, neon for
discharging and xenon for generating ultraviolet rays are enclosed.
One picture element (pixel) is composed of Red, Green and Blue (RGB) cells. The cell pitch is 0.365mm horizontal (1.095mm per
pixel) by 1.110mm vertical.
As shown in Fig. 1, the cells are arranged for each R / G / B colour. A pixel consists of each cell of R/G/B/ colour. The size of a cell is
0.365mm horizontally and 1.110mm vertically.
Direction
Vertical(V)
Horizontal(H)
1st pixel
line
2nd pixel
line
479th pixel
line
480th pixel
line
1st pixel
array
BGRBGR
BG
GRBGR
B
GRBGR
B
2nd pixel
array
RBG R
851th pixel
array
BGRBGR
BGRBGR
GRBGR
B
GRBGR
B
852th pixel
array
V 1.110mm
Pitch of pixel
(Pitch of cell)
1-8 (No.52149)
H 1.095mm
Pitch of pixel
One pixel
(1dot)
B cell
G cell
R cell
Fig.1 PIXEL (CELL) ARRANGEMENT
H 0.365mm
Pitch of cell
2.3.1.3PIXEL FAULT
There are three pixel faults - bright fault , dark fault and flicker fault - that are respectively defined as follows.
(1) BRIGHT FAULT
In this pixel fault, a cell that should not light originally is lighting on and off.
For checking this pixel fault, input ALL BLACK SCREEN and find out the cell that is lighting on and off.
(2) DARK FAULT
In this pixel fault, a cell that should light originally is not lighting or lighting with the brightness twice as brighter as originally lighting.
For checking this pixel fault, input 100% of each R/G/B colour and find out the cell that is not lighting.
(3) FLICKER FAULT
In the pixel fault, a cell that should light originally or not light originally is flashing on and off.
For checking this pixel fault, input ALL BLACK SCREEN signal or 100% of each RGB colour and find out the cell that is flashing on
and off.
2.3.1.4PIXEL FAULT SPECIFICATION
FaultScreen displayCriteria for number of fau lted cell
BRIGHT FAULTAll black screenA zone: 0
B zone: 1 or less than 1 in each colour
DARK FAULTRed level 100% on entire screenA zone: 2 or less than 2 in each colour
Green level 100% on entire screen
B zone: 6 or less than 6 in each colour
Blue level 100% on entire screen
FLICKER FAULTRed level 100% on entire screenA zone: 0
Green level 100% on entire screen
B zone: 2 or less than 2 in each colour
Blue level 100% on entire screen
(1) OBJECT RANGE
A-zone : Center portion (area enclosed by 1/4 vertically from the top and bottom and 1/4 horizontally from the right and left sides.)
B-zone : Other area
1/4H1/4H
B zone
1/4V
1/4V
A zone
1/4V1/4V
(2) JUDGEMENT STANARD
Regardless of A and B zones, the following cases are considered as defects.
• When the distance between the bright fault is less than 15mm.
• When the distance between the bright fault and the dark defect or between the flicker fault is less than 15mm.
• When the distance between the dark fault and the flicker is less than 30mm.
(No.52149)1-9
2.3.2 REMOTE THROUGH FUNCTION
The REMOTE THROUGH function is a function that is capable of controlling such equipment as a karaoke system conn ected to the
REMOTE THROUGH terminal by receiving the IR (infrared ray) signal at the sensor of the remote controller unit of this model.
2.3.2.1REMOTE THROUGH OUTPUT TERMINAL
The REMOTE THROUGH terminal and MAKE (mini DIN 4 pin) terminal at the back of the main body share the same terminal.
Therefore, it is necessary to change the setup at the SERVICE MODE when the REMOTE THROUGH function is used. For the pin
layout at the terminal, the 4 pin will become an output terminal and the 1-3 pins will be GNDs.
REMOTE THROUGH OUTPUT TERMINAL
34
Pin No.
1
2
3
2
1
4
Signal name
GND
GND
GND
OUTPUT
2.3.2.2HOW TO CHANGE THE SETUP OF THE FUNCTION
(1) Enter the SERVICE MODE.
(2) Select the < CPU BLOCK > with the [/] key.
(3) Press the [] key of the remote control unit to display the < CPU BLOCK >.
(4) Select the "CE: SYSTEM CONSTANT" with the [/] key.
(5) Press the [] key of the remote control unit to display the setup screen for the "SYSTEM CONSTANT".
(6) Display the "CE 05" with the [/] key.
(7) Change the setup value to 001 from 000 with the [/] key.
(8) Press the MENU key of the remote control unit to exit from the SERVICE MODE.
(9) After turning the power off (or at the stand-by mode), turn the power on again.
(10) Then the REMOTE THROUGH function is available.
SERVICE MODE
VCO ADJUST
WHITE BALANCE BLOCK
CPU BLOCK
SIZE/POSITION BLOCK
H POSITION BLOCK
PANEL BLOCK
SIGNAL BLOCK
DEVICE INITIAL VALUE
ENTER: SELECT: EXIT:
[1/2]
MENU
DIAGNOSIS BLOCK
UPDATE CPU PROGRAM
HOUR METER BLOCK
ENHANCER BLOCK
ENTER: SELECT: EXIT:
[2/2]
MENU
1-10 (No.52149)
< CPU BLOCK >
CA:PANORAMA DATA
CB:SIGNAL RANGE
CC:SIZE/POSI. RANGE
CD:FRQENCY DATA
CE:SYSTEM CONSTANT
CF:TEMP. SENSOR DATAs
CG:APS CONTROL DATA
CH:TEST MODE
ENTER: SELECT: EXIT:
<CPU BLOCK> screen
MENU
C(E05)
SYSTEM CONSTANT screen
000 001
2.3.3 HOUR METER FUNCTION
This model is equipped with an "HOUR METER" function tha t
displays elapsed time on operating time of the set.
Elapsed time can be checked at the "HOUR METER BLOCK" in
the SERVICE MODE.
Also you can reset elapsed time to zero if needed.
Elapsed time count 1 hour. MAX elapsed time is 65535 hour.
HOW TO RESET ELAPSED TIME
(1) Enter the SERVICE MODE (Fig.1).
(2) Press [/] key, and select "HOUR METER BLOCK" of
SERVICE MODE 2 page (Fig.2).
(3) Press [] key, and display "HOUR METER BLOCK"
screen (Fig.3).
(4) While the "HOUR METER BLOCK" display press []
key and it will display "RESET HOUR METE" (Fig.4).
(5) Press [] key and reset the HOUR METER (Fig.5).
SERVICE MODE
VCO ADJUST
WHITE BALANCE BLOCK
CPU BLOCK
SIZE/POSITION BLOCK
H POSITION BLOCK
PANEL BLOCK
SIGNAL BLOCK
DEVICE INITIAL VALUE
ENTER: SELECT: EXIT:
Fig.1
DIAGNOSIS BLOCK
UPDATE CPU PROGRAM
HOUR METER BLOCK
ENHANCER BLOCK
ENTER: SELECT: EXIT:
Fig.2
[1/2]
MENU
[2/2]
MENU
HOUR METER BLOCK
< HOUR METER BLOCK >
RESET
HOUR METER (X1h): 12345
ENTER: EXIT:
Fig.3
< RESET HOUR METER >
!
Are you sure ?
"YES" then Key
ENTER: SELECT: EXIT:
MENU
"NO" then Key
Fig.4
< HOUR METER BLOCK >
RESET
HOUR METER (X1h): 00000
MENU
MENU
2.3.4 REMINDER TO CHANGE A BATTERY
This model with a timer function, is equipped with a batte ry for
the timer.
When the battery is running low, a message of "BATTERY LOW"
is displayed on the [TIMER], [COLOR-REVERSE] and
[REFRESH] setting screen of the < SET-UP MENU >. At the end
of the battery-life, a message of "BATTERY EMPTY" is displayed
same screen. Both cases, you should make a battery change.
Battery is fixed on the battery board. Please exchange the whole
substrate.
BATTERY CHANGE PROCEDURE
(1) Remote the terminal board on the back of the main body.
(Refer to disassembly procedure)
(2) Remove the connector D on the battery board.
(3) Remove the screw A attaching the battery board.
(4) Change the battery board to new one.
Note :
After changing the battery board, the same message before
a battery change will be displayed when the power is turned
on for the first time. Therefore, turn off the power once, then
turn on the power again. The message will be disappeared
and you can use the model with normal functi on s.
AV TERMINAL
CND CONNECTOR
A
BATTERY PWB
ENTER: EXIT:
Fig.5
MENU
THE CAUTIONS ON BATTERY EXCHANGE
Risk of explosion if battery is replaced by incorrect type.
Dispose of used batteries according to the instructions.
(No.52149)1-11
SECTION 3
DISASSEMBLY
3.1DISASSEMBLY PROCEDURE
• Prior to assembly/disassembly procedure of the set, be sure to
disconnect the power cord from the wall outlet.
• Perform the following procedures on a flat and strong place.
3.1.1 REMOVING THE AV TERMINAL (Fig.1)
(1) Disconnect the power cord from the wall outlet.
(2) Remove the 2 screws [A].
(3) Remove the 2 screws [B].
(4) Lift the both ends of the AV TERMINAL slowly, and remove
the CN1001
PWB. Then, remove the AV TERMINAL.
3.1.2 REMOVING THE PC TERMINAL (Fig.1)
• Remove the AV TERMINAL.
(1) Remove the 2 screws [C].
(2) Remove the 2 screws [D].
(3) Remove the 2 screws [E].
(4) Lift the both ends of the PC TERMINAL slowly, and remove
the CN1003
the MAIN PWB. Then, remove the PC TERMINAL.
3.1.3 REMOVING THE AV TERMINAL PWB (Fig.2)
[Only GM-V42S, GM-V42UB and GM-V42UG]
• Remove the AV TERMINAL.
(1) Remove the 12 screws [F].
(2) Remove the AV TERMINAL PWB.
3.1.4 REMOVING THE PC TERMINAL PWB (Fig.2)
• Remove the AV TERMINAL.
• Remove the PC TERMINAL.
(1) Remove the 4 screws [G].
(2) Remove the 4 screws [H] with a box wrench.
(3) Remove the AV TERMINAL PWB.
/CN1002 connectors connected to the MAIN
/CN1004/CN1005 connectors connected to
Only Europe model
GM-V42PCE
GM-V42PCEB
GM-V42PCEG
AV TERMINAL
A
B
PC TERMINAL PWB
AV TERMINAL PWB
A
B
Fig.1
AV TERMINAL
C
CN1002
CN1001
H
D
PC
TERMINAL
E
CN1005
CN1004
CN1003
G
3.1.5 REMOVING THE BATTERY PWB (Fig.3)
• Remove the AV TERMINAL.
(1) Remove the CND
(2) Remove the 1 screw [I].
(3) Pull the BATTERY PWB toward you, and remove it.
1-12 (No.52149)
connector.
CND CONNECTOR
I
BATTERY PWB
A
F
Fig.2
AV TERMINAL
B
Fig.3
3.1.6 REMOVING THE FRONT PANEL (Fig.4)
• Remove the optional parts such as cooling fan if they are
attached to the rear side of the main body.
• Place the main body with its screen side looking upward.
(1) Remove the 3 screws [J].
(2) Lift the underside of the FRONT PANEL slowly, and
remove the tapes fixing the top part of the FRONT PANEL.
(3) Remove the FRONT PANEL.
3.1.7 REMOVING THE LED PWB (Fig.5)
• Remove the FRONT PANEL.
(1) Remove the 2 screws [K].
(2) Remove the CNX
(3) Remove the LED PWB.
connector.
CNX
K
LED PWB
Fig.4
M
J
CONTROL PWB
CNT
FRONT PANEL
CONTROL
PANEL
L
3.1.8 REMOVING THE CONTROL PWB (Fig.6)
• Remove the FRONT PANEL.
(1) Remove the 2 screws [L].
(2) Remove the 3 screws [M].
(3) Remove the CNT
(4) Remove the CONTROL PWB.
connector.
Surface
Fig.5
NO
REAR PANEL
Fig.6
(No.52149)1-13
3.1.9 REMOVING THE REAR COVER (Fig.7)
• Remove the AV TERMINAL.
• Remove the PC TERMINAL.
(1) Remove the 21 screws [N].
(2) Remove the 1 screw [O].
(3) Lift the REAR COVER slowly, and remove it.
3.1.10 REMOVING THE BACK FRAME (LEFT/RIGHT) (Fig.7)
• Remove the AV TERMINAL.
• Remove the PC TERMINAL.
• Remove the REAR COVER.
(1) Remove the 4 screws [P].
(2) Remove the 4 screws [Q].
(3) Lift the BACK FRAME, and remove it.
(4) Remove the BACK FRAME on the other side in the sa me
way.
3.1.11 REMOVING THE SPEAKER / SPEAKER BRACKET (Fig.8)
• Remove the AV TERMINAL.
• Remove the PC TERMINAL.
• Remove the REAR COVER.
(1) Remove the speaker cord.
(2) Remove the 2 screws [R].
(3) Remove the SPEAKER.
(4) Remove the SPEAKER on the other side in the same way.
(5) Remove the clamp fixing the filter from the SPEAKER
BRACKET.
(6) Remove the 2 screws [S].
(7) Remove the SPEAKER BRACKET.
(8) Remove the SPEAKER BRACKET on the other side in the
same way.
P
BACK FRAME
Q
CNV CONNECTOR
T
TEMP. SENSOR PWB
QP
Fig.7
SPEAKER
CLAMP
+
R
+
S
L
3.1.12 REMOVING THE TEMP. SENSOR PWB (Fig.8)
• Remove the AV TERMINAL.
• Remove the PC TERMINAL.
• Remove the REAR COVER.
(1) Remove the CNV
connector on the TEMP. SENSOR PWB.
(2) Remove the screw [T].
(3) Remove the TEMP. SENSOR PWB.
1-14 (No.52149)
SPEAKER
BRACKET
Fig.8
3.1.13 REMOVING THE SPEAKER TERMINAL PWB (Fig.9)
• Remove the AV TERMINAL.
• Remove the PC TERMINAL.
• Remove the REAR COVER.
• Remove the BACK FRAME.
(1) Remove the 3 screws [U], 2 screws [V], and 1 screw [W].
(2) Remove the SPEAKER TERMINAL BRACKET.
(3) Lift the SPEAKER TERMINAL PWB, and remove the
CN6006
connector.
(4) Remove the speaker cord connected to the SPEAKER.
(5) Remove the speaker cord from each clamp.
(6) Remove the SPEAKER TERMINAL PWB.
3.1.14 REMOVING THE AUDIO PWB (Fig.9)
• Remove the AV TERMINAL.
• Remove the PC TERMINAL.
• Remove the REAR COVER.
• Remove the BACK FRAME.
• Remove the SPEAKER TERMINAL BRACKET.
• Remove the SPEAKER TERMINAL PWB.
(1) Remove the 1 screw [X].
(2) Remove the cords connected to the CNF
/CNA connectors
connected to the sound board from each clamp.
(3) Remove the CNA
(4) Disconnect the CN9004
connector on the MAIN PWB.
connector on the VIDEO SMPS
PWB.
(5) Remove the AUDIO PWB.
VIDEO SMPS PWB
CN9004
CNF
CNA
CN6006
U
W
V
SPEAKER TERMINAL
BRACKET
SPEAKER TERMINAL
PWB
R
X
AUDIO PWB
L
CNA
F
MAIN PWB
Fig.9
(No.52149)1-15
3.1.15 REMOVING THE LINE FILTER PWB (Fig.10)
• Remove the AV TERMINAL.
• Remove the PC TERMINAL.
• Remove the REAR COVER.
• Remove the BACK FRAME.
(1) Remove 1 screw [Y].
(2) Remove the noise filter from the clamp fixed to the SHIELD
COVER.
(3) Remove the 4 screws [Z].
(4) Remove the SHIELD COVER.
(5) Remove the CN8001
connector on the SMPS PWB.
(6) Remove the 3 screws [a] fixing the LINE FILTER PWB.
(7) Remove the LINE FILTER PWB.
3.1.16 REMOVING THE DIGITAL PWB (Fig.11)
• Remove the AV TERMINAL.
• Remove the PC TERMINAL.
• Remove the REAR COVER.
(1) Lift the DIGITAL PWB SHIELD COVER, and remove it.
(2) Remove the CNX
/CNV/CNQ/CND/CNT connectors.
(3) Remove the 4 screws [b].
(4) Turn the DIGITAL PWB upside down, and remove the
CN2201
/CNJ/CNK connectors.
(5) Remove the DIGITAL PWB.
SHIELD COVER
CN8001
SMPS PWB
DIGITAL PWB
SHIELD COVER
CNJ
a
Z
LINE FILTER PWB
NOISE FILTER
#%
Y
#%
Fig.10
CNX
CNK
b
DIGITAL
PWB
CN201
CNQ
CND
CNT
CHASSIS BASE
E
Fig.11
1-16 (No.52149)
3.1.17 REMOVING THE MAIN PWB (Fig.12)
• Remove the AV TERMINAL.
• Remove the PC TERMINAL.
• Remove the REAR COVER.
• Remove the DIGITAL PWB SHIELD COVER.
• Remove the DIGITAL PWB.
(1) Remove the CNA
(2) Remove the 5 screws [c].
(3) Remove the MAIN PWB.
/CNE connectors.
MAIN PWB
CNE
CHASSIS
BASE
c
CNA
3.1.18 REMOVING THE CHASSIS BASE (Fig.13)
The CHASSIS BASE can be removed without removing the
MAIN PWB, DIGITAL PWB, LINE FILTER PWB, AUDIO PWB,
and BATTERY PWB from the CHASSIS BASE.
• Remove the AV TERMINAL.
• Remove the PC TERMINAL.
• Remove the REAR COVER.
• Remove the BACK FRAME (right).
• Remove the SPEAKER TERMINAL BRACKET.
• Remove the SPEAKER TERMINAL PWB.
(1) Remove the CN9004
PWB.
(2) Remove the cords from clamps.
(3) Remove the CNX
DIGITAL PWB.
(4) Remove the CNE
(5) Remove the 4 screws [d], 2 screws [e], and 2 screws [f].
(6) Lift the CHASSIS BASE, and remove th e LA03 connector
on the LOGIC-MAIN PWB.
(7) Remove the CHASSIS BASE.
3.1.19 REMOVING THE PDP (PANEL) UNIT (Fig.13)
• Remove the AV TERMINAL.
• Remove the PC TERMINAL.
• Remove the REAR COVER.
• Remove the BACK FRAME (right).
• Remove the SPEAKER TERMINAL BRACKET.
• Remove the SPEAKER TERMINAL PWB.
• Remove the CHASSIS BASE.
(1) Holding BACK FRAME SPACER, Lift the PDP upright and
remove it.
NOTE:
• When you remove the PDP (PANEL) UNIT, be careful not to
give a shock to the PDP (PANEL) UNIT enough. Two or more
people are required to remove the PDP (PANEL) UNIT.
• Do not touch the front side (glass) of the PDP with your
fingers.
/CN8001 connectors on the SMPS
/CNV/CNQ/CNT connectors on the
connector on the MAIN PWB.
CNQ
e
CNE
SMPS PWB
CN9004
BLACK FLAME SPACER
CNT
LA03
Fig.12
d
CHASSIS BASE
CNV
CNX
f
BLACK FLAME
SPACER
CN8001
LOGIC-MAIN PWB
Fig.13
(No.52149)1-17
3.1.20 DISASSEMBLY PDP UNIT
3.1.20.1 REMOVING THE SMPS PWB
• Remove the REAR COVER.
(1) Remove the CN8007
CN8009
(2) Remove the 8 screws [g].
(3) Remove the SMPS PWB.
3.1.20.2 REMOVING THE X-MAIN PWB
• Removing the REAR COVER.
(1) Remove the CN4001
connectors on the X-MAIN PWB.
(2) Remove the 8 screws [h].
(3) Remove the X-MAIN PWB.
3.1.20.3 REMOVING THE Y-BUF-U PWB
• Remove the REAR COVER.
(1) Remove the CN5401
connectors on the Y-BUF-U PWB.
(2) Remove the 5 screws [I].
(3) Lift the Y-BUF-U PWB slightly, and remove th e CN5404
CN5405 connectors on the Y-BUF-U PWB.
(4) Remove the Y-BUF-U PWB.
3.1.20.4 REMOVING THE Y-BUF-L PWB
• Remove the REAR COVER.
(1) Remove the CN5501
connectors on the Y-BUF-L PWB.
(2) Remove the 5 screws [j].
(3) Lift the Y-BUF-L PWB slightly, and remove the CN5504/
CN5505
(4) Remove the Y-BUF-L PWB.
3.1.20.5 REMOVING THE Y-MAIN PWB
• Remove the REAR COVER.
• Remove the CHASSIS BASE.
• Remove the Y-BUF-U PWB.
• Remove the Y-BUF-L PWB.
(1) Remove the CN5001
PWB.
(2) Remove the 7 screws [k].
(3) Remove the Y-MAIN PWB.
/CN8002 connectors on the SMPS PWB.
connectors on the Y-BUF-L PWB.
/CN8008/CN8004/BUFFER/CN8003/
/CN4002/CN4003/CN4004/CN4005
/CN5402/CN5403/CN5406
/CN5502/CN5503/CN5506
/CN5008 connectors on the Y-MAIN
3.1.20.6 REMOVING THE LOGIC-MAIN PWB
• Remove the REAR COVER.
• Remove the CHASSIS BASE.
(1) Remove the CN101
connectors on the LOGIC-MAIN PWB.
(2) Remove the 6 screws [l].
(3) Remove the LOGIC-MAIN PWB.
3.1.20.7 REMOVING THE E-BUF PWB
• Remove the REAR COVER.
• Remove the BACK FRAME.
• Remove the CHASSIS BASE.
• Remove the SPEAKER BRACKET (left).
(1) Remove the EC1
connectors on the E-BUF PWB.
(2) Remove the 6 screws [m].
(3) Remove the E-BUF PWB.
• Remove the SPEAKER BRACKET (right).
(1) Remove the GC5
the G-BUF PWB.
(2) Remove the 6 screws [o].
(3) Remove the G-BUF PWB.
3.1.20.10 REMOVING THE VIDEO SMPS PWB
• Remove the REAR COVER.
(1) Remove the CN9001
CN9007
(2) Remove the 4 screws [p].
(3) Remove the VIDEO SMPS PWB.
connectors on the VIDEO SMPS PWB.
/CN201/CN401/CN402/CN403/CN803
/EC2/EC3/CN401/CN806/EF1
/CN402/FE1/FG1 connectors on the F-
/GC6/GC7/CN403/GF1 connectors on
/CN9002/CN9004/CN9005/CN9006/
1-18 (No.52149)
CN5008
CN5404
CN5406
CN5405
CN5505
CN5506
CN5504
CN5001
CN5401
CN5402
CN5403
CN5501
CN5502
CN5503
CN9005
CN9006
CN9001
CN9007
CN9002
CN9004
CN8003
BUFFER
CN8004
CN8007
CN8008
CN8009
CN8002
CN201
CN803
CN101
CN401
CN402
CN403
CN4001
CN4003
CN4004
CN4002
CN4005
Y-BUF-U PWB
Y-BUF-L PWB
EC1
Y-MAIN PWB
i
EC2EC3
CN806 CN401CN402CN403
EF1
FC4 FC4
FE1
GC5GC6GC7
GF1
SMPS PWBVIDEO SMPS PWB
k
p
g
X-MAIN PWB
lh
j
m
n
o
E-BUF PWBG-BUF PWBF-BUF PWB
LOGIC-MAIN PWB
Fig.14
(No.52149)1-19
3.2REPLACEMENT OF MEMORY ICs
3.2.1 MEMORY IC
This model uses memory IC. In the memory IC is memorized
data for correctly operating the video and drive circuits.
When replacing the memory IC, be sure to use IC written with the
initial values of data.
3.2.2 PROCEDURE FOR REPLACING MEMORY IC
(1) Power off
Switch the power off and unplug the power plug from the
wall outlet.
(2) Replace IC
Be sure to use memory IC written with the initial data
values.
(3) Power on
Connect the power plug into the wall outlet and turn the
power on.
3.2.3 PROCEDURE FOR SET-UP MENU
(1) Press the [MENU / EXIT] key and the [VOLUME-] key
simultaneously.
(2) The SET-UP MENU screen (Fig. 1) will be displayed.
(3) Check the setting value of the SET-UP MENU table. (Refer
to the next page.)
(4) If the value is different, select the setting item with the
SELECT [/] key, and set the correct value with the
ADJUST [/] key.
(5) Press the [MENU / EXIT] key, and return to the normal
screen.
3.2.4 PROCEDURE FOR reset OR all reset
(1) The SET-UP MENU is displayed.
(2) Select "reset" or "all reset" item with SELECT [/] key of
remote control unit.
(3) Press ENTER [] key, and the "reset" (or all reset) menu is
displayed (Fig. 2).
(4) Press ENTER [] key to "reset" the standard settings.
< SET-UP MENU >
STATUS DISPLAY
CONTROL LOCK
REMOTE SWITCH
HD SIGNAL MODE
WHITE BALANCE
TIMER
ADJUST: SELECT: EXIT:
< SET-UP MENU >2/2
PIXEL SHIFT
POWER SAVE
COLOR-REVERSE
REFRESH
reset
all reset
HOUR METER x100h
MODEL NAME : GM-V42
ADJUST: SELECT: EXIT:
: ON
: OFF
: MODE1
: 1080i
: OFF
: OFF
: OFF
: OFF
: 000
1/2
MENU
MENU
SET-UP MENUscreen
When select the [reset or all
reset] change to [ENTER : ]
mode.
Fig.1
or <reset>
< all reset >
Are you sure
"YES" then Key.
"NO" then Key.
MENU
[reset] / [all reset]
Fig.2
REMOTE CONTROL UNIT KEY ASSIGNMENT
1-20 (No.52149)
MENU/EXIT
key
RM-C579 REMOTE CONTROL UNIT
POWER
OFFON
DISPLAY
INPUT SELECT
A
VIDEO
MUTING
MENU/EXIT
VOLUME
ASPECT
COMPO.
/(RGB B)
RGB AB
VOLUME key
(-/+)
SELECT key
( )
ENTER key ( )
ADJUST key
( )
INITIAL SETTING FACTORY SHIPPING
Setting itemSetting valueSetting itemSetting value
POWEROFFVOLUME10
INPUT SELECTVIDEO A
MAIN MENU
PICTURE ADJ.CONTRAST10SIZE/POSITION ADJ. V POSITION00
VCO ADJUSTVideo decorder VCO adjustment SIGNAL BLOCKSignal circuit adjustment
WHITE BALANCE BLOCKWHITE BALANCE adjustmentDEVICE INITIAL VALUEInitial setting of DEVICE
CPU BLOCKSetting of CPUDIAGNOSIS BLOCKDIAGNOSIS function
SIZE/POSITION BLOCKSIZE/POSITION adjustmentHOUR METER BLOCKHOUR METER function
H. POSITION BLOCKH. POSITION adjustmentENHANCER BLOCKSharpness circuit adjustment
PANEL BLOCKSetting of PDP (panel)
(No.52149)1-21
3.3REPLACEMENT OF CHIP COMPONENT
3.3.1 CAUTIONS
(1) Avoid heating for more than 3 seconds.
(2) Do not rub the electrodes and the resist parts of the pattern.
(3) When removing a chip part, melt the solder adequately.
(4) Do not reuse a chip part after removing it.
3.3.2 SOLDERING IRON
(1) Use a high insulation soldering iron with a thin pointed end of it.
(2) A 30w soldering iron is recommended for ea sily removing parts.
3.3.3 REPLACEMENT STEPS
1. How to remove Chip parts
2. How to install Chip parts
[Resistors, capacitors, etc.]
(1) As shown in the figure, push the part with tweezers and
alternately melt the solder at each end.
(2) Shift with the tweezers and remove the chip part.
[Transistors, diodes, variable resistors, etc.]
(1) Apply extra solder to each lead.
SOLDER
SOLDER
[Resistors, capacitors, etc.]
(1) Apply solder to the pattern as indicated in the figure.
(2) Grasp the chip part with tweezers and place it on the
solder. Then heat and melt the solder at both ends of the
chip part.
[Transistors, diodes, variable resistors, etc.]
(1) Apply solder to the pattern as indicated in the figure.
(2) Grasp the chip part with tweezers and place it on the
solder.
(3) First solder lead A as indicated in the figure.
(2) As shown in the figure, push the part with tweezers and
alternately melt the solder at each lead. Shift and remove
the chip part.
NOTE :
After removing the part, remove remaining solder from the
pattern.
1-22 (No.52149)
A
B
C
(4) Then solder leads B and C.
A
B
C
SECTION 4
ADJUSTMENT
4.1BEFORE ADJUSTMENT
(1) There are 2 ways of adjusting this monitor : One is with the
REMOTE CONTROL UNIT and the other is the conventional
method using adjustment parts and components.
(2) The setting (adjustment) using the REMOTE CONTROL
UNIT is made on the basis of the initial setting values. The
setting values which adjust the screen to the optimum
condition can be different from the initial setting values.
(3) Make sure that connection is correctly made to AC power
source.
(4) Turn on the power of the Plasma display monitor and
measuring instrument for warming up for at least 30
minutes before starting adjustment.
(5) If the input signal is not specified, use the most appropriate
signal for adjustment.
(6) Never touch parts (such as variable resistors, transformers
and condensers) not shown in the adjustment items of this
service adjustment.
(2) The " " mark is appears at the center of the screen (Fig.
2).
(3) While " " mark is appears, press the [MENU] key and
[VOL-] key simultaneously.
(4) The word "PLEASE DON'T TOUCH !" (Fig.3) will be
display on the screen center.
(5) While the words of "PLEASE DON'T TOUCH !" are display
as shown in Fig. 3.
(6) Press the SELECT [] key, SERVICE MODE will be
display as shown in Fig. 4.
4.3.2 SELECT & ADJUSTMENT OF SERVICE MODE ITEM
While the SERVICE MODE is displayed.
(1) Press the up [/] select key to white balance block item.
(2) After selecting the item, press ENTER [] key.
(3) The adjustment menu mode is displayed .
(4) Press the ADJUST [/] key to change the setting value.
(5) Press [MENU / EXIT] key to display the original menu.
(6) Perform in the same manner for others SERVICE MODE
ITEM.
Note :
When the adjustment is made at SERVICE MODE, the
changed data is memorized in a memory simultaneously with
the change.
Fig.1
Fig.2
PLEASE, DON'T TOUCH!
Fig.3
VCO ADJUST
WHITE BALANCE BLOCK
CPU BLOCK
SIZE/POSITION BLOCK
H POSITION BLOCK
PANEL BLOCK
SIGNAL BLOCK
DEVICE INITIAL VALUE
ENTER: SELECT: EXIT:
DIAGNOSIS BLOCK
UPDATE CPU PROGRAM
HOUR METER BLOCK
ENHANCER BLOCK
ENTER: SELECT: EXIT:
Fig.4
[1/2]
MENU
[2/2]
MENU
(No.52149)1-23
4.4COMPOSITION OF A SERVICE MENU SCREEN
MAIN MENU
W(A01)
WHITE BALANCE BLOCK
adjustment item screen
C(A01)
CPU BLOCK
adjustment item screen
VCO ADJUST
WHITE BALANCE BLOCK
CPU BLOCK
SIZE/POSITION BLOCK
H POSITION BLOCK
PANEL BLOCK
SIGNAL BLOCK
DEVICE INITIAL VALUE
ENTER: SELECT: EXIT:
< VCO ADJUST PROGRAM >
Are you sure ?
"YES" then Key.
"NO" then Key.
MENU
< WHITE BALANCE BLOCK >
WA:RGB PS HIGH
WB:RGB PC LOW
WC:VIDEO HIGH
WD:VIDEO LOW
WE:COMPO. 15k HIGH
WF:COMPO. 15k LOW
WG:COMPO. HIGH
WH:COMPO. LOW
ENTER: SELECT: EXIT:
WHITE BALANCE BLOCK
adjustment item select screen
< CPU BLOCK >
CA:PANORAMA DATA
CB:SIGNAL RANGE
CC:SIZE/POSI. RANGE
CD:FRQENCY DATA
CE:SYSTEM CONSTANT
CF:TEMP SENCOR DATA
CG:APS CONTROL DATA
CH:TEST MODE
I(D055) VDSCALER TOUTX L208
I(D056) VDSCALER TOUTX H002
I(D057) VDSCALER CONTROL000
I(D058) VDSCALER DELTAX L000
I(D059) VDSCALER DELTAX H008
I(D060) VDSCALER DELTAY L000
I(D061) VDSCALER DELTAY H008
I(D062) VDSCALER Y0000
I(D063) VDSCALER X0000
I(D064) VDSCALER TOUTY L224
I(D065) VDSCALER TOUTY H001
I(D066) VUSCALER CONTROL000
I(D067) VUSCALER DELTAX L192
I(D068) VUSCALER DELTAX H006
I(D069) VUSCALER DELTAY L000
I(D070) VUSCALER DELTAY H008
I(D071) VUSCALER Y0000
I(D072) VUSCALER X0000
I(D073) DI CONTROL004
I(D074) DI C0031
I(D075) DI C1007
I(D076) DI C2127
I(D077) DI C3255
I(D078) DI C4031
I(D079) DATA CONFIG000
I(D080) DATA SC008
I(D081) DIN POLARITY 0041
I(D082) DIN POLARITY 1000
I(D083) DIN CONTROL 0004
I(D084) DIN CONTROL 1064
I(D085) DIN CONTROL 2002
I(D086) DPLL DIV L000
I(D087) DPLL DIV H000
I(D088) DIN THRESHOLD008
I(D089) CLAMP START001
I(D090) CLAMP WIDTH016
I(D091) DIN LINE TRIG001
I(D092) DIN PIXEL TRIG001
I(D093) ACTIVE LINE START L038
I(D094) ACTIVE LINE START H000
I(D095) ACTIVE LINES L224
I(D096) ACTIVE LINES H001
I(D097) ACTIVE PIXEL START L132
I(D098) ACTIVE PIXEL START H000
I(D099) ACTIVE PIXELS L128
I(D100) ACTIVE PIXELS H002
I(D101) DIN FLAGGED LINE L000
I(D102) DIN FLAGGED LINE H0 00
I(D103) DIN CONTROL 3006
I(D104) N/A000
I(D105) N/A000
I(D106) N/A000
I(D107) DIN FILTER GRP/C0253
I(D108) DIN FILTER GRP/C1250
I(D109) DIN FILTER GRP/C2253
• After turning the power on, confirm that "NO SYNC" is
displayed.
• Start making adjustment five minutes or later after
turning the power on.
(1) Connect the DC voltmeter to test points Va, Vsca ,
Vs, Ve, and Vset, and GND on SMPS PWB.
(2) Adjust VA VR, VSCAN VR, VS VR, VE VR, and
VSET respectively so that their voltage becomes the
value in the voltage label attached to the panel.
VOLTAGE ADJUSTMENT POINT
VS
Vs
Vsca
L
Vset
Va
SMPS PWB
Ve
VE
VIDEO
DECODER VCO
Remote
control unit
Signal
generator
[VCO ADJUST
PROGRAM]
VSCANVSET
VA
: Adjustment VR
: Test point
(1) Input an NTSC colour bar signal from VIDEO A
terminal.
(2) Enter the SERVICE MODE, and select "VCO
ADJUST".
(3) Select "YES" and press the [] key. Adjustment is
performed automatically.
(4) After a few seconds, confirm that "ADJUSTMENT
OK" is displayed on the screen.
(5) Turn the power off. Then, turn the power on again,
and confirm that the colour bar signal is properly
displayed.
(No.52149)1-53
Item
A-D INPUT
OFFSET (480i)
Offset values
too low
Sate of an
optimum
adjustment
Measuring
instrument
Remote
control unit
Signal
generator
Oscilloscope
Horizontal duration
Picture signal duration
Increase the value
Decrease the value
Test pointAdjustment partDescription
TP-PR
TP-PB
[MAIN PWB]
[DEVICE INITIAL
BLOCK]
I (B19) : Test mode
(1) Input a 480i whole bla ck signal from COMPONENT
terminal.
(2) Connect the oscilloscope to TP-PR.
(3) Enter the SERVICE MODE, and select "DEVICE
[WHITE BALANCE
BLOCK]
W(E11) : AD offset R
W(E13) : AD offset B
INITIAL VALUE".
(4) Select IB : CXA3506R.
(5) Select < I(B19) > (Test mode), and change the
setting value from 000 to 001 to 000.
(6) Return to the SERVICE MODE, and select "WHITE
BALANCE BLOCK".
(7) Select WE : COMPO 15k HIGH.
3.3V
(8) Select < W(E11) > (AD offset R). As is shown in the
left figure, adjust the setting value of < W(E11) > so
that Low(0V) voltage is as bright as High(3.3V)
0V
voltage in the scanning interval. Adjust the setting
value of < W(E11) > within 2-3 points from the initial
value.
3.3V
(9) Connect the oscilloscope to TP-PB.
(10) Select < W(E13) > (AD offset B) of WHITE BALANCE
BLOCK, and adjust the setting value of < W(E13) > so
0V
3.3V
that Low(0V) image signal voltage is as bright as
High(3.3V) voltage in the same way as for < W(E11) >.
Offset values
too hight
A-D INPUT
OFFSET (1080i)
Remote
control unit
Signal
generator
Oscilloscope
TP-PR
TP-PB
[MAIN PWB]
0V
[DEVICE INITIAL
BLOCK]
I (B19) : Test mode
[WHITE BALANCE
BLOCK]
W(G11) : AD offset R
W(G13) : AD offset B
(1) Input a 1080i whole black signal from COMPONENT
terminal.
(2) Enter the SERVICE MODE, and select "WHITE
BALANCE BLOCK".
(3) Select WG : COMPO HIGH.
(4) Select < W(G11) > (AD offse t R), and adjust in the
same way as for the 480i signal above.
(5) Select < W(G13) > (AD offset B), and adjust in the
same way as for the 480i signal above.
1-54 (No.52149)
Item
RGB OFFSET
(NTSC)
Measuring
instrument
Test pointAdjustment partDescription
Remote
control unit
Signal
generator
(RAMP pattern)
Align the 3 lines on the left part
[CPU BLOCK]
C(H01) : Test mode
[WHITE BALANCE
BLOCK]
W(C04) : R cutoff
W(C06) : B cutoff
(1) Input an NTSC lamp pattern signal from VIDEO A
terminal.
(2) Enter the SERVICE MODE, and select "CPU
BLOCK".
(3) Select CH : Test mode.
(4) Select < C(H01) > (Test mode), and change "0" into
"2", and then enter "RGB BALANCE Test mode".
(5) Return to the MAIN MENU screen.
(6) Select "WHITE BALANCE BLOCK".
(7) Select "WC : VIDEO HIGH".
(8) Select < W(C04) > (R cutoff) and < W(C06) > (B
cutoff), and adjust the setting values so that the three
lines on the left of the lamp pattern screen are lined
in the same line (so that there is no colour zone in
the border between white and black).
∗ Don't change W(C05) : G cutoff value.
(9) After the adjustment finishes, select < C(H01) > of
"CPU BLOCK" again, and return the setting value "2"
to "0".
RGB OFFSET
(480i)
RGB OFFSET
(1080i)
RGB OFFSET
(VGA)
RGB OFFSET
(RGB15k)
Remote
control unit
Signal
generator
Remote
control unit
Signal
generator
Remote
control unit
Signal
generator
Remote
control unit
Signal
generator
[CPU BLOCK]
C(H01) : Test mode
[WHITE BALANCE
BLOCK]
W(E04) : R cutoff
W(E06) : B cutoff
[CPU BLOCK]
C(H01) : Test mode
[WHITE BALANCE
BLOCK]
W(G04) : R cutoff
W(G06) : B cutoff
[CPU BLOCK]
C(H01) : Test mode
[WHITE BALANCE
BLOCK]
W(A04) : R cutoff
W(A06) : B cutoff
[CPU BLOCK]
C(H01) : Test mode
[WHITE BALANCE
BLOCK]
W( I 04) : R cutoff
W( I 06) : B cutoff
(1) Input a 480i lamp pattern signal from COMPONENT
[WHITE BALANCE
BLOCK]
(Colour temperature :
HIGH)
W(C01) : R drive
W(C02) : G drive
W(C03) : B drive
• Keep the set running for twenty minutes or longer. If you
turn the set on again, make adjustment 5 minutes or
later after you turn the set on.
• Set PICTURE ADJ. of MAIN MENU to the initial state.
(1) Input an NTSC window pattern (brilliance 70%)
signal from VIDEO A terminal.
(2) Set COLOUR TEMP at HIGH in FUNCTION
SELECT of < MAIN MENU >.
(Colour temperature :
LOW)
W(D01) : R drive
W(D02) : G drive
W(D03) : B drive
(3) Enter the SERVICE MODE.
(4) Select "WHITE BALANCE BLOCK".
(5) Select "WC : VIDEO HIGH".
(6) Select < W(C01) > (R drive) and < W(C03) > (B
drive).
(7) Adjust < W(C01) > and < W(C03) > by using a colour
Colour temperature
adjustment point
X=0.280
Y=0.282
analyzer so that the colour temperature adjustment
point becomes the value in "HIGH" in the left table.
Don't change < W(C02) > (G drive) values.
(8) If the adjustment method above does not work,
return < W(C01) > and < W(C03) > to 255, and fix
X=0.313
Y=0.329
< W(C01) > at 255.
(9) Adjust WHITE BALANCE by using < W(C02) > and
< W(C03) >.
(10) After the adjustment finishes, escape from the
SERVICE MODE.
(11) Switch COLOUR TEMP of < MAIN MENU > to
"LOW".
(12) Enter the SERVICE MODE again.
(13) Select WHITE BALANCE BLOCK.
(14) Select "WD : VIDEO LOW".
(15) Adjust < W(D01) >(R drive), < W(D02) >(G drive),
and < W(D03) >(B drive) by using a colour analyzer
in the same way as for the COLOUR TEMP HIGH
above.
[WHITE BALANCE
BLOCK]
(Colour temperature :
HIGH)
W(E01) : R drive
W(E02) : G drive
W(E03) : B drive
(1) Input a 480i window pattern (brillian ce 70%) signal
from COMPONENT terminal.
(2) Set COLOUR TEMP at "HIGH".
(3)Select "WE:COMPO.15k HIGH," and adjust
< W(E01) >(R drive), < W(E02) >(G drive),
and < W(E03) >(B drive) in the same way
as for NTSC.
(4) Set COLOUR TEMP at "LOW".
(Colour temperature :
LOW)
W(F01) : R drive
W(F02) : G drive
(5)Select "WF : COMPO.15k LOW," and adjust
< W(F01) >(R drive), < W(F02) >(G drive),
and < W(F03) >(B drive) in the same as for
NTSC.
W(F03) : B drive
[WHITE BALANCE
BLOCK]
(Colour temperature :
HIGH)
W(G01) : R drive
W(G02) : G drive
W(G03) : B drive
(1) Input a 1080i window pattern (brilliance 70%) si gnal
from COMPONENT terminal.
(2) Set COLOUR TEMP at "HIGH".
(3) Select "WG : COMPO. HIGH," and adjust < W(G01)
>(R drive), < W(G02) >(G drive), and < W(G03) >(B
drive) in the same way as for NTSC.
(4) Set COLOUR TEMP at "LOW".
(5) Select "WH : COMPO. LOW," and adjust < W(H01)
(Colour temperature :
LOW)
>(R drive), < W(H02) >(G drive), and < W(H03) >(B
drive) in the same way as for NTSC.
W(H01) : R drive
W(H02) : G drive
W(H03) : B drive
1-56 (No.52149)
Item
WHITE
BALANCE
(VGA)
WHITE
BALANCE
(RGB15k)
BRIGHTNESS
(NTSC)
Measuring
instrument
Remote
control unit
Signal
generator
Colour
analyzer
Remote
control unit
Signal
generator
Colour
analyzer
Remote
control unit
Signal
generator
Test pointAdjustment partDescription
[WHITE BALANCE
BLOCK]
(Colour temperature :
HIGH)
W(A01) : R drive
W(A02) : G drive
W(A03) : B drive
(1) Input a VGA (640 × 480 dots) window pattern
(brilliance 70%) signal from COMPONENT terminal.
(2) Set COLOUR TEMP at "HIGH".
(3) Select "WA : RGB PC HIGH," and adjust < W(A01)
>(R drive), < W(A02) >(G drive), and < W(A03) >(B
drive) in the same way as for NTSC.
(4) Set COLOUR TEMP at "LOW".
(5) Select "WB : RGB PC LOW," and adjust < W(B01)
(Colour temperature :
LOW)
>(R drive), < W(B02) >(G drive), and < W(B03) >(B
drive) in the same way as for NTSC.
W(B01) : R drive
W(B02) : G drive
W(B03) : B drive
[WHITE BALANCE
BLOCK]
(Colour temperature :
HIGH)
W(A01) : R drive
W(A02) : G drive
W(A03) : B drive
(1) Input an RGB 15k wind ow pattern (brilliance 70%)
signal from COMPONENT terminal.
(2) Set COLOUR TEMP at "HIGH".
(3) Select "W I : RGB 15k HIGH," and adjust < W( I 01)
>(R drive), < W( I 02) >(G drive), and < W( I 03) >(B
drive) in the same way as for NTSC.
(4) Set COLOUR TEMP at "LOW".
(5) Select "WJ : RGB 15k LOW," and a djust < W(J01)
(Colour temperature :
LOW)
>(R drive), < W(J02) >(G drive), and < W(J03) >(B
drive) in the same way as for NTSC.
W(B01) : R drive
W(B02) : G drive
W(B03) : B drive
[WHITE BALANCE
BLOCK]
W(C07) : Bright
• Confirm that white balance adjustment is finished.
• Set PICTURE ADJ. of MAIN MENU at the initial state.
(1) Input an NTSC gray scale pattern (1% step) sign al
from VIDEO A terminal.
(2) Enter the SERVICE MODE.
(3) Select WHITE BALANCE BLOCK.
(4) Select "WC : VIDEO HIGH".
(5) Select < W(C07) >(Bright).
(6) Adjust < W(C07) > so that 6% black slightly shines
on the screen.
123456701 2345670
∗ Be careful so that back component does not shine.
Adjust <W(C07)> so that 6% black
5%
shines slightly on the screen.
(No.52149)1-57
Item
BRIGHTNESS
(480i)
BRIGHTNESS
(1080i)
BRIGHTNESS
(VGA)
BRIGHTNESS
(RGB15k)
Measuring
instrument
Remote
control unit
Signal
generator
Remote
control unit
Signal
generator
Remote
control unit
Signal
generator
Remote
control unit
Signal
generator
Test pointAdjustment partDescription
[WHITE BALANCE
BLOCK]
W(E7) : Bright
[WHITE BALANCE
BLOCK]
W(G7) : Bright
[WHITE BALANCE
BLOCK]
W(A7) : Bright
[WHITE BALANCE
BLOCK]
W(I 7) : Bright
(1) Input a 480i gray scale pattern (1% step) signal from
COMPONENT terminal.
(2) Select "WC : VIDEO HIGH," and adjust < W(E07)
>(Bright) in the same way as for NTSC.
(1) Input a 1080i gray scale pattern (1% step) signal
(1) Input a RGB 15k scale pattern (1% step) signal from
COMPONENT terminal.
(2) Select "WI : RBG15k HIGH," and adjust < W( I 07)
>(Bright) as in the same way for NTSC.
1-58 (No.52149)
SECTION 5
TROUBLESHOOTING
5.1SELF-DIAGNOSIS FUNCTION
5.1.1 OUTLINE
This model has a "Self-diagnosis function," which checks the
operation state of the circuits and temperature inside the set, and
informs us of a failure and memorize it when a failure occurs.
Diagnosis is performed when the power is turned on, and
information input to the main microcomputer is monitored at all
time.
The diagnosis is displayed on the screen and LED flashing.
Failure detection is based on input state of I
control lines connected to the main microcomputer.
5.1.2 ENTERING SELF-DIAGNOSIS BLOCK
(1) Enter the SERVICE MODE. (See a page for SERVICE
MODE settings).
(2) Select DIAGNOSIS BLOCK in the SERVICE MODE.
(3) Self-diagnosis block screen is displayed.
2
C bus and various
SERVICE MENU SCREEN
VCO ADJUST
WHITE BALANCE BLOCK
CPU BLOCK
SIZE/POSITION BLOCK
H POSITION BLOCK
PANEL BLOCK
SIGNAL BLOCK
DEVICE INITIAL VALUE
ENTER: SELECT: EXIT:
DIAGNOSIS BLOCK
UPDATE CPU PROGRAM
HOUR METER BLOCK
ENHANCER BLOCK
[1/2]
Fig.1
[2/2]
MENU
5.1.3 ESCAPING FROM SELF-DIAGNOSIS BLOCK
(1) To return to the SERVICE MODE screen, press the [EXIT]
key.
5.1.4 INITIALIZATION OF ITEMS IN DIAGNOSIS
(1) Enter the SERVICE MODE. (Fig. 1)
(2) Select DIAGNOSIS BLOCK in the second page (2/2). (Fig.
2)
(3) Adjustment screen for DIAGNOSIS BLOCK is displayed.
(Fig. 3)
(4) Confirm that all the items (except TEMP.OVER) are
displayed as "O".
(5) If an error occurs in an item, "X" and the number of error
times is displayed in the item. Up to nine times of errors are
counted. If errors occur more than nine times, "9" is
displayed. Unless deleted, the number of error times
remains memorized in a memory.
(6) To delete an error, select "CLEAR" and press the [] key.
(Fig. 4)
(7) Then, items in DIAGNOSIS is initialized, and all items
(except TEMP.OVER) are displayed as "O". (Fig. 5)
5.1.5 POINTS TO NOTE WHEN USING THE SELF-DIAGNOSIS
FEATURE
In addition to circuit failures (abnormal operatio n), the following
cases may also be diagnosed as "Abnormal," and displayed and
counted as "X".
(1) Temporary defective transmissions across circuits due to
pulse interruptions
(2) Misalignment in the on/off timing of power for I
2
C bus (Vcc)
when turning on/off the power.
Diagonasis may be impeded if I2C SIGNAL BUS, and I2C ROM
BUS are displayed as "X".
If a failure is expected to reoccur, clear (reset) the failure history
to make the unit record the new diagnosis results.
ENTER: SELECT: EXIT:
MENU
Fig.2
SELF-DIAGNOSIS DISPLAY
< DIAGNOSIS BLOCK >
CLEAR
I2C SIGNAL BUS: X9
I2C ROM BUSO
POWER TEMP. OVER : : O
TEMP. OVER[9Eh]
TEMP. OVER[9Ch]
ENTER: SELECT: EXIT:
Fig.3
< CLEAR >
!
Are you sure ?
"YES" then Key
"NO" then Key
ENTER: SELECT: EXIT:
< DIAGNOSIS BLOCK >
CLEAR
I2C SIGNAL BUS: O
I2C ROM BUS: O
POWER TEMP. OVER : O
TEMP. OVER[9Eh]
TEMP. OVER[9Ch]
ENTER: SELECT: EXIT:
MENU
MENU
Fig.4
Fig.5
MENU
MENU
(No.52149)1-59
5.1.6 DETAILS
Type of errorIndicationDescription of detection Detection standard and methodCountermeas ure
Communication
error in video
decorder, IP
conversion, PDP
interface etc
Main memory
communication
error
2
I2C SIGNAL BUS I
C communication error
in MAIN PWB
[IC2501]
I2C ROM BUSCommunication error for
main memory
[IC2502]
When normal communication is
not available in spite of up to threetime communication in I
2
C
communication, it is judged as an
error.
Memorize the number of error
times in the main memory (up
to nine times).
Memorize the number of error
times in the main memory (up
to nine times), and turn the
power off forcibly.
Temperature
rise in power
supply part
POWER TEMP.
OVER
Alarm signal from SMPS
PWB is detected
[SMPS PWB]
When ten consecutive errors are
detected every 0.5 second, it is
judged as an error.
Memorize the error times in the
main memory (up to nine
times), and turn the power off
forcibly.
Temperature
rise in DIGITAL
PWB
TEMP. OVER
[9Eh]
DIGITAL PWB
[IC2510]
When the temperature in the
DIGITAL PWB is over the setting
63°C centigrade for more than
thirty consecutive seconds
Switch of APC control (Reduce
brilliance when the temperature
rises.)
Display "TEMP/OVER" on the
screen.
Temperature
rise around
power supply
part
TEMP. OVER
[9Eh]
A sensor in upper part of
power supply part detects
an error.
[IC8101]
In addition, when the temperature
in the DIGITAL PWB is over the
setting 120°C for more than thirty
consecutive seconds
When the temperature in and
around the power supply part is
over the setting 95°C centigrade
for more than thirty consecutive
Memorize the number of error
times in the main memory (up
to nine times), and turn the
power off forcibly.
Display "TEMP/OVER" on the
screen.
seconds
In addition, when the temperature
in and around the power supply
part is over the setting 93°C
centigrade for more than one
Memorize the number of error
times in the main memory (up
to nine times), and turn the
power off forcibly.
hundred and twenty consecutive
seconds
5.1.7 INDICATION OF SELF DIAGNOSIS BY USING LED
LED for self-diagnosis indication is located on the upper left of the set (on the right of remote sensor).
SELF-DIAGNOSIS AND FLASHING LED
Diagnosis
Flashing LED
TopMiddle Bottom
PriorityIndication
Communication error in main memoryzz5Notes :
Abnormal temperature rise in power supply partz z 4
Abnormal temperature rise in DIGITAL PWBz 3
Abnormal temperature rise in panelz 2
Abnormal writing in main memory 1
• Indication color : red
• Flashing interval : 0.25 second
• When two or more errors are detected at
the same time, errors are displayed one
after another, according to the order of
priority.
• All LEDs are lighted while various data
are written in the main memory.
z : Lighting / : Flashing
1-60 (No.52149)
(No.52149)1-61
VICTOR COMPANY OF JAPAN, LIMITED
AV & MULTIMEDIA COMPANY VIDEO DISPLAY CATEGORY 12, 3-chome, Moriya-cho, kanagawa-ku, Yokohama, kanagawa-prefecture, 221-8528, Japan
(No.52149)
Printed in Japan
WPC
Loading...
+ hidden pages
You need points to download manuals.
1 point = 1 manual.
You can buy points or you can get point for every manual you upload.