Be sure to read this manual before servicing. To assure safety from fi re, electric shock, injury, harmful radiation and materials, various measures are provided in this HITACHI Plasma display.
Be sure to read cautionary items described in the manual to maintain safety before servicing.
Service Warning
1. Since Panel Module and front Filter are made of glass, handling the broken Module and Filter shall be
taken care suffi ciently in order not to be injured.
2. Replacing work shall be started after the Panel Module and the AC/DC Power supply become suffi ciently cool.
3. Special care shall be taken to the display area in order not to damage its surface.
4. The Panel Module shall not be touched with bare hand to protect its surface from stains.
5. It is recommended to use clean soft gloves during the replacing work in order to protect not only the
display area of the Panel Module but also a serviceman himself.
6. The Chip Tube of Panel Module (located upper left of the back and surrounded by frame) and fl exible
cables connecting Panel glasses to drive circuit PWBs are very weak, so shall be taken care suffi ciently not to break. If you break Chip Tube, the Panel doesn’t display anything forever.
Contents
1. Features ----------------------------------------------- 3
14. Replacement parts list ---------------------------- 48
SPECIFICATIONS AND PARTS ARE SUBJECT TO CHANGE FOR IMPROVEMENT.
Plasma Display
April 2004 Digital Media Division
42PMA300A/42PD300TC (PW1A)
CAUTION FOR SAFETY
Please read this page before repair the monitor.
This page explains to following items for keep the safety of set and prevent to accident
during repair work.
We explain by symbol at happen the damage or injury when took wrong repair.
Warning
Caution
We made the symbol as below, which are kind of following items.
This symbol means "CAUTION"
This symbol means "POSSIBLE to
ELECTRIC SHOCK"
This symbol means "possible to die or heavy damage"
This symbol means "possible to damage or something will break"
This symbol means "MUST"
This symbol means "DO NOT"
WARNING
Should be follows to instructions.
We indicates to cabinet, chassis and
parts by label, which are special atten-
tion part.
Please follow to note and [Safety
Instructions] of User’s Manual.
Prevent the electric shock.
Please take care during working
because monitor has high voltage part
and power supply part.
Possible to die if you tough to these
place by miss take.
Please disconnect power plug during
overhaul, reassemble or change parts.
You will die or take damage by electric
shock if you touch to live part.
Use recommended components.
Please use to same characteristic com-
ponent, which is same as previous for
your safety and keep reliability espe-
cially marked by in parts list and cir-
cuit diagram.
It is reason of electric shock or fire if
you use non-recommended compo-
nent.
Should be kept same style of wiring or component.
Monitor uses tubes or tapes, which
made by insulator, and some components are keep distance from surface of
PWB for safety.
Internal leads kept from hot part or high
voltage part by clamper or styling, so
please return to original condition for
prevent to electric shock or fire.
Should be done safety check after finished.
Every part (removed screws, component and wiring) should be returned to
previous condition.
Check around repair position for make
damage by miss take and measure the
insulated impedance by meg-ohm
meter.
Confirm the value of impedance, that
value is more than 4M ohm.
It is reason for electric shock or fire if
that value is less than 4M ohm.
Nobody can check and repair to the code
and combination circuit of HDCP.
Never remove the shield case, which is
assembled to the code and combination
circuit of HDCP.
2
42PMA300A/42PD300TC (PW1A)
PRECAUTIONS
● How to clean the plasma screen panel of the monitor
Before cleaning the monitor, turn off the monitor and disconnect the power plug from the power outlet.
To prevent scratching or damaging the plasma screen face, do not knock or rub the surface with sharp or
hard objects. Clean the screen with a soft cloth moistened with warm water and dry with a soft cloth. If it is
not enough, then use a cloth with mild detergent. Do not use harsh or abrasive cleaners.
● How to clean the cabinet of the monitor
Use a soft cloth to clean the cabinet and control panel of the monitor. When excessively soiled dilute a neutral detergent in water, wet and wring out the soft cloth and afterward wipe with a dry soft cloth.
Never use acid/alkaline detergent, alcoholic detergent, abrasive cleaner, powder soap, OA cleaner, car wax,
glass cleaner, etc. especially because they would cause discoloration, scratches or cracks.
The 42-inch color plasma display panel, with a resolution of 852 (H) x 480(V) pixels, creates a high-definition,
large-screen (aspect ratio : 16:9) and low-profile flat display. Free from electromagnetic interferences from
geomagnetic sources and ambient power lines, the panel produces high-quality display images free from
color misconvergence and display distortion.
● High Performance Digital Processor
A wide range of personal computer signals can be handled, from 640 x 400, 640 x 480 VGA to 1600 x 1200
UXGA.(RGB Analog input)
● Easy-to-use remote control and on screen display system
The remote control included eases the work of setting display controls. Further, the on-screen display
system, displays the status of signal reception and display control settings in an easy-to-view fashion.
● Power saving system
The International ENERGY STAR power saver feature saves power consumption automatically when
input signals are not available.
When connected to a VESA DPMS-compliant PC, the monitor cuts its power consumption while it is idle.
● TruBass
TruBass, SRS and ( ) symbol are trademarks of SRS Labs,Inc.
TruBass technology is incorporated under license from SRS Labs, Inc.
[AV MONITOR model] 42PMA300A
● One mini D-sub terminal and one DVI-D terminal for RGB input
The D-sub terminal can also receive the RGB-component by On-Screen Display control.
● One composite/S.video input terminal and two component video input terminals added with VIDEO board
One component input is possible to switch to RGB signal input from the Menu screen.
● One SCART terminal for the signal of the European standard added with VIDEO board
It operates as composite/S.video input and RGB input terminal, or composite video output terminal.
● One composite video output terminal as a monitoring output added with VIDEO board
● Simple type of the remote control
[TV model] 42PD300TC
● Various input/output terminals added with VIDEO board - same to above-mentioned feature of the AV
MONITOR model
● Tuner added with TUNER board
● High performance type of the remote control
3
2. Specifications
42PMA300A/42PD300TC (PW1A)
Display
Panel
Net dimensions
(excluding Speakers/Stand)
Net weight
(excluding Speakers/Stand)
Ambient
conditions
Power supply
Power consumption/at standby
Audio output
(RGB input)
Input signals
(Video input)
Input signals
Video output Signal
(RF input)
Input signals
dimensions
Resolution
Temperature
Relative humidity
Input terminals
Video signals
Sync signals
Input terminals
Video signals
Input terminals
RF Video System
Approx. 42 inches (920 (H) x 518 (V) mm, diagonal 1059mm)
852 (H) x 480 (V) pixels
1030 (W) x 636 (H) x 91 (D) mm
42PMA300A:33.2kg 42PD300TC:34.2kg
Operating : 5 to 35, Storage : -15 to 60
Operating : 20% to 80%, Storage : 20% to 90% (non-condensing)
AC100 - 240V, 50/60Hz
310W / <3W
12W + 12W (6ǡ)
RGB1 DVI input terminal (DVI-D)
RGB1 audio input terminal (3.5mm Stereo Mini Jack)
RGB2 analog RGB input terminal (D-sub 15-pin)
RGB2 audio input terminal (3.5mm Stereo Mini Jack)
• The back cover is provided with
indications to distinguish the
adjustment buttons.
42PMA300A/42PD300TC (PW1A)
• The main power switch is located at the back, on the
MENU button
lower surface.
Main power switch
Remote-control
receiver
Indicating lamp
VOLUME
UP/DOWN
buttons
(ADJUST
buttons)
SUB-POWER button
• ( ) indicates the function while the MENU is displayed on the screen.
PROGRAM DOWM button
( SELECT button)
INPUT SELECT button
(OK button)
PROGRAM UP button
( SELECT button)
[Remote control]
for
42PMA300A
for
42PD300TC
5
42PMA300A/42PD300TC (PW1A)
4. Service points
Lead free solder
This product uses lead free solder (unleaded) to help preserve the environment. Please read these
instructions before attempting any soldering work.
Caution: Always wear safety glasses to prevent fumes or molten solder from getting into the eyes. Lead
free solder can splatter at high temperatures (600˚C).
Lead free solder indicator
Printed circuit boards using lead free solder are engraved with an "F."
Properties of lead free solder
The melting point of lead free solder is 40-50˚C higher than leaded solder.
Servicing solder
Solder with an alloy composition of Sn-3.0Ag-0.5Cu or Sn-0.7Cu is recommended.
Although servicing with leaded solder is possible, there are a few precautions that have to be taken. (Not
taking these precautions may cause the solder to not harden properly, and lead to consequent malfunctions.)
Precautions when using leaded solder
Remove all lead free solder from soldered joints when replacing components.
If leaded solder should be added to existing lead free joints, mix in the leaded solder thoroughly after the
lead free solder has been completely melted (do not apply the soldering iron without solder).
Servicing soldering iron
A soldering iron with a temperature setting capability (temperature control function) is recommended.
The melting point of lead free solder is higher than leaded solder. Use a soldering iron that maintains a high
stable temperature (large heat capacity), and that allows temperature adjustment according to the part being
serviced, to avoid poor servicing performance.
Recommended soldering iron:
Soldering iron with temperature control function (temperature range: 320-450˚C)
171 Thermo sensor function available or not 0:None,1:Yes10
172 Video Input function available or not at RGB1 & RGB2 mode0:Not available, 1:Available11
Screen Saver-Picture shift direction 0:dia 1:cross 2:up/down 3:left/right
173
174 AUDIO Function available 0:NO,1:YES11
175 Remote Function available 0:NO,1:YES11
176 Power Save On/Off Setting at Initialize,Reset and Shipping0:Change 1: Don't Change20
177 DVI-STB/RGB-COMPONENT Function available 0:NO,1:YES10
178 Dynamic Backlight function 0:NO,1:YESFor LCD model11
179 ISM Control for WVGA11
180 Terminal Mode Function available 0:Not Available, 1:Available RS232C10
181 Black insert function 0:Not available, 1:Available
182 AGC_LEVEL AGCLALL Mode30
183 TEXT H sync delay㧙1270
184 TEXT V sync delay㧙12750
185 TEXT_H_POSITION㧙25442
186 TEXT_V_POSITION㧙25438
187 Lower Limits value for Sync Detect of 2ms intervalFor AFC at TV mode25425
188 Upper Limits Value for Sync Detect of 2ms intervalFor AFC at TV mode25440
189 Lower Limits value for Sync Detect of 2ms intervalFor Free Running at TV mode25430
190 Upper Limits Value for Sync Detect of 2ms intervalFor Free Running at TV mode25445
191 Lower Limits value for Sync Detect of 2ms intervalFor AUTO OFF at TV mode25425
192 Upper Limits Value for Sync Detect of 2ms intervalFor AUTO OFF at TV mode25435
193 Lower Limits value for Sync Detect of 2ms intervalFor Free Running at AV mode25430
194 Upper Limits Value for Sync Detect of 2ms intervalFor Free Running at AV mode25445
195 Counting time for discrimination of fV㧙312
196 Dispersion Time of Sustain current 0: 2 Times, 1: 4 timesFor PC mode11
197 Counting time for discrimination of SYNC㧙312
198 Input Source of fV/fH judghment(0:M30625/TA1370)Component Mode10
199 Counting time for discrimination of fV(M30625/TA1370)㧙312
200 Y_DL (6.5MHz PAL/NTSC4.43) For AsiaMain107
201 Y_DL (6.5MHz SECAM) For AsiaMain1010
202 Y_DL (6.5MHz PAL/NTSC4.43) For AsiaSub104
203 Y_DL (6.5MHz SECAM) For AsiaSub1010
Function
For Dynamic mode or Day mode (For LCD model only)
Maximum
Value
30
10
: Should be followed previous data
Default
Formatter
Changed Component
VIDEO
PWB
PWB
TUNER
PWB
PDP
PANEL
10
42PMA300A/42PD300TC (PW1A)
O : Should be adjusted
Adj.
No.Adjust ItemsMode
204 PDP-BLK ON/OFF1:ON, 0:OFF10
205 Counting time for discrimination of fH(M30625/TA1370)㧙312
206 Sharpness f0(L)Sub32
207 NJW1320_OUT1_GAINVIDEO PWB10
208 NJW1320_OUT2_GAINVIDEO PWB10
209 Sharpness f0(L')Sub32
210 AFC_GAIN (Except AV00 mode)Except AV00 mode30
Recovery to an error of OSC frequency of Ceramic resonator for timer
211
212 Brightness Center (CM)NT2,3,4/HD2,3,9,10/PAL2/PAL3,4254128
213 Brightness Center (CM)HD1/HD4/HD5/HD6/HD7/HD8254128
214 Brightness Center (CM)MULTI PICTURE/NT1/PAL1254128
215 Reset function of accumulation time for WVGA/LCD Panel0:Normal 1:Reset10
216 Contrast Center (CM) Except WVGA & LCDTV/VIDEO(AV3/AV4 mode)254137
217 Power key function available or not (At Force AVC mode 㧕0:Available 1:Cannot10
218 Color Center (CM)NT1/NT2/NT4/HD3/HD4/HD6/PAL412785
219 Color Center (CM)PAL1/PAL2/HD8/HD912785
220 Color Center (CM)NT3/HD1/HD2/HD5/PAL3/HD7/HD1012785
221 Tint Center (CM)PAL1254120
222 Tint Center (CM)NT1/NT2/NT4/HD3/HD4/HD6254113
223 Tint Center (CM)PAL2/HD8/HD10/PAL4254108
224 Tint Center (CM)NT3/HD1/HD2/HD5/PAL3/HD7/HD9254124
225 Center of Sharpness (Y↪HV㨾㩧㩔㩧㩅㩃㩨㨼㩧) For EuropeTV3119
226 Center of Sharpness (Y↪HV㨾㩧㩔㩧㩅㩃㩨㨼㩧) For EuropeVIDEO3118
227 Center of Sharpness (Y↪HV㨾㩧㩔㩧㩅㩃㩨㨼㩧) For EuropeHD5/HD63111
228 Center of Sharpness (Y↪HV㨾㩧㩔㩧㩅㩃㩨㨼㩧) For EuropeHD1/HD4/HD7/HD8317
229 Center of Sharpness (Y↪HV㨾㩧㩔㩧㩅㩃㩨㨼㩧) For EuropeHD2/HD3/HD9/HD103115
230 Center of Sharpness (Y↪HV㨾㩧㩔㩧㩅㩃㩨㨼㩧) For EuropeNT2/NT3/PAL2/PAL3/NT4/PAL43115
231 Center of Sharpness (Y↪HV㨾㩧㩔㩧㩅㩃㩨㨼㩧) For EuropeTEXT(for split)317
232 Maximum Value of Contrast at REAL/NORMAL mode254188
233 Offset Value of Contrast data at SPLIT mode12083
234 Offset value of gain for Black Stretch functionExcept OFF/LOW/HIGH mode6333
Receive Sub-tint adjustment signal of NTSC by
AV1 input. (composit)
Refer to the following for the details of a signal.
Sub-tint adjustment signal
TV Video Sub-tint Adjustment (Main)
(1)
The waveform of #1pin(Cr output) and
#5pin(Y output) of [PYM] Connector is seen.
1pin is connected to CH1.
5pin is connected to CH2.
A trigger is applied to CH2.
(2)
It checks that a waveform is like fig.A.
(3)
The data of No.42 is adjusted so that a waveform
of CH1 may be set to fig.B.
Press [OK] button after the adjustment.
(4)
Check that No.42 data is the same as No.43.
TV Video Sub-tint Adjustment (Sub)
(1)
Sub-tint adjustment signal is put into the
right-hand side of two screens.
1.Push AV2 of remote control.
2.Push MULTI PICTURE (PinP) Button of
remote control, It become two screens.
3.It checks that left-hand side of two screens
is AV2.
4.After push yellow button of remote control,
and push AV1 of remote control.
5.It checks that right-hand side of two screens
is sub –tint adjustment signal.
ABA
A B
Luminance 40% (0.28V) 40% (0.28V)
Chroma Fhase 0 degree 180 degree
Chroma level 40% 40%
Waveform of CH1 and CH2.
Fig.A Before adjustment
CH1
CH2
(2)
The waveform of #1pin(Cr output) and
#5pin(Y output) of [PYS] Connector is seen.
1pin is connected to CH1.
5pin is connected to CH2.
A trigger is applied to CH2.
(3)
It checks that a waveform of is like fig.A.
(4)
The data of No. 44 is adjusted so that a waveform
of CH1 may be set to fig.B
(5)
Press [OK] button after the adjustment.
(6)
Check that No. 44 data is the same as No45.
Fig.B After adjustment
CH1
CH2
22
42PMA300A/42PD300TC (PW1A)
Item
AUTOMATIC SIGNAL LEVEL ADJ USTMENT –RGB (1)
Preparation Procedure
(1) Input the adjustment signal of VGA (60Hz)
(1) Select RGB2 and enter the service adjustment
format into RGB2 [D-sub] input terminal.
the adjustment signal
The signal level of black area
should be pedestal level.
This signal must not be inserted
characters etc.
White
Black
0.7V
[Note] Never adjust without use of the specified signal.
(2) Select No.740 “RGB Amp. Gain ADJ.” and press
If that were done by mistake, the picture would become abnormal in black level, contrast and color.
In this case, it will be recovered by re-adjustment in the specified way.
mode.
OK button for more than 2 seconds to start the
adjustment.
It will complete the adjustment after the OSD of
“AUTO MODE” disappeared.
Item
AUTOMATIC SIGNAL LEVEL ADJ USTMENT –RGB (2)
Preparation Procedure
(1) Input the adjustment signal of 576p
480p
(1)
Select AV1 and enter the service adjustment mode.
or
format into AV1 input terminal.
the adjustment signal (2) Select No.740 “RGB Amp. Gain ADJ.” and press
OK button for more than 2 seconds to start the
The signal level of black area
should be pedestal level.
This signal must not be inserted
characters etc.
adjustment.
It will complete the adjustment after the OSD of
“AUTO MODE” disappeared.
(3) Select No.741 “RGB Amp. Gain ADJ.” and press
OK button for more than 2 seconds to start the
adjustment.
White
Black
It will complete the adjustment after the OSD of
“AUTO MODE” disappeared.
0.7V
[Note] Never adjust without use of the specified signal.
If that were done by mistake, the picture would become abnormal in black level, contrast and color.
In this case, it will be recovered by re-adjustment in the specified way.
23
42PMA300A/42PD300TC (PW1A)
Item AUTOMATIC SIGNAL LEVEL ADJ USTMENT –VIDEO
Preparation
(1) Input the adjustment signal of 576p or
480p format into AV1 input terminal.
the adjustment signal
The signal level of black area
should be pedestal level.
This signal must not be inserted
characters etc.
White
Black
0.7V
(1) Select AV1 and enter the service adjustment mode.
(2) Select No.743 “Automatic White peak Adj. (Multi)”
and press OK button for more than 2 seconds to
start the adjustment.
It will complete the adjustment after the OSD of
“AUTO MODE” disappeared.
Procedure
[Note] Never adjust without use of the specified signal.
If that were done by mistake, the picture would become abnormal in black level, contrast and color.
In this case, it will be recovered by re-adjustment in the specified way.
24
42PMA300A/42PD300TC (PW1A)
Item
Video Color Temperature Adjustment (Cool)
Adjustment Preparations
(1)
Set the output of signal
generator to white raster.
(Ratio:100%)
(2)
Component signal (480i)
Video level:0.714Vp-p
SYNC:0.286Vp-p
Set-up level:0V
(3)
Set Picture MENU to
[RESET].
Set into Factory adjustment
(4)
mode.
Adjustment Procedures
(1)
Perform the following adjustment with
the remote control.
(2)
Set the CRT color analyzer (CA100)
at the center of the panel.
(3)
Ensure that adjustment No. 0, 1, 2
are all set as 224.
(4)
After receiving Video signal,
step down the two (or one) among
adjustment No. 0, 1, 2 and adjust
the value as shown below.
At least one of the data should be 224.
Adj. pointI
2
C
Remarks
Color temperature should
be adjusted under the
condition in which the
screen is the brightest, thus
the initial value of
adjustment is it’s maximum
value.
Only reducing the brightness
controls the adjustment,
thus weaken the brighter
color to adjust.
Color temperature is at
Cool mode while the
following No. is selected.
Perform the following adjustment with
the remote control.
(2)
Set the CRT color analyzer (CA100)
at the center of the panel.
(3)
Ensure that adjustment No. 3, 4, 5
are all set as 224.
(4)
After receiving Video signal, step
down the two (or one) among
adjustment No. 3, 4, 5 and adjust
the value as shown below.
At least one of the data should be 224.
Adj. pointI2C
Remarks
Color temperature should
be adjusted under the
condition in which the screen
is the brightest, thus the
initial value of adjustment is
it’s maximum value.
Only reducing the brightness
controls the adjustment, thus
weaken the brighter color to
adjust.
Color temperature is at
Normal mode while the
following No. is selected.
Adjustment No. 03, 04, 05
< Specification >
Video color temperature (Normal)
Perform the following adjustment with
the remote control.
(2)
Set the CRT color analyzer (CA100)
at the center of the panel.
(3)
Set Color Temperature of PICTURE
MENU to[WARM].
(4)
Ensure that adjustment No. 6, 7, 8
are all set as 224.
(5)
After receiving Video signal, step
down the two (or one) among
adjustment No. 6, 7, 8 and adjust the
value as shown below.
At least one of the data should be 224.
Adj. pointI2C
Remarks
Color temperature should
be adjusted under the
condition in which the screen
is the brightest, thus the
initial value of adjustment is
it’s maximum value.
Only reducing the brightness
controls the adjustment, thus
weaken the brighter color to
adjust.
Color temperature is at
Warm mode while the
following No. is selected.
Perform the following adjustment with
the remote control.
(2)
Set the CRT color analyzer (CA100)
at the center of the panel.
Set Color Temperature of PICTURE
MENU to[B/W].
(3)
Ensure that adjustment No. 9, 10, 11
are all set as 224.
(4)
After receiving Video signal,
step down the two (or one) among
adjustment No. 9, 10, 11 and adjust
the value as shown below.
At least one of the data should be 224.
2
Adj. pointI
C
Remarks
Color temperature should
be adjusted under the
condition in which the
screen is the brightest, thus
the initial value of
adjustment is it’s maximum
value.
Only reducing the brightness
controls the adjustment,
thus weaken the brighter
color to adjust.
Color temperature is at
Cool mode while the
following No. is selected.
Adjustment No. 00, 01, 02.
< Specification >
Video color temperature (B/W)
x=0.335±0.005
y=0.343±0.005
(Color Temp:5400°K±0MPCD)
28
42PMA300A/42PD300TC (PW1A)
Item
PC Color Temperature Adjustment
Adjustment Preparations
This adjustment should be
(1)
done after video color
temperature adjustment.
Set into Factory Adjustment
(2)
mode.
Input : RGB2 [D-sub]
(3)
Signal : VGA (75) 0.7V
(No set up)
Window ratio : 100%
Confirm that the screen
(4)
size is ‘Full’ .
Adjustment Procedures
(1)
Perform the following adjustment
with the remote control.
(2)
Set the CRT color analyzer (CA100)
at the center of the panel.
(3)
Ensure that the adjustments No. 12,
13, 14 are all set as 224.
(4)
After receiving PC signal, step down
the two (or one) among adjustments
No. 12, 13, 14 and adjust the value
as shown below.
At least one of the data should be 224.
2
Adj. pointI
C
Remarks
Environment㧦20 lux or less
Color temperature should
be adjusted under the
condition in which the screen
is the brightest, thus the
initial value of adjustment is
it’ s maximum value.
Only reducing the brightness
controls the adjustment, thus
weaken the brighter color to
adjust.
Color temperature is at Cool
mode while the following
No. is selected.
< Specification >
PC color temperature (Cool)
x=0.268±0.005
y=0.283±0.005
(Color temp:12000°K±10MPCD)
(5) Write adjustment value of video color temperature to the following NO.
Video Color Temperature PC Color Temperature
No.3 Data No.15 Data
No.4 Data No.16 Data
No.5 Data No.17 Data
No.6 Data No.18 Data
No.7 Data No.19 Data
Adjustment No. 12, 13, 14
No.8 Data No.20 Data
No.9 Data No.21 Data
No.10 Data No.22 Data
No.11 Data No.23 Data
29
42PMA300A/42PD300TC (PW1A)
6. Troubleshooting
How to get to Burn-in mode
This mode displays the test patterns of some single color raster in turn. These signals are from built-in gener-
ator of PDP panel. So it can be presumed that maybe the panel has some trouble when the screen of
Burn-in mode is abnormal.
Using the front control buttons with the set turned off (standby) can activate this mode.
Press the SUB-POWER( ) button, INPUT SELECT() button and VOLUME DOWN() button at the
same time, and hold for more than 5 seconds.
The set turns on with single color raster and the OSD of [BURN IN: ON].
To escape from this mode, press the SUB-POWER( ) button, INPUT SELECT() button and button at
the same time, and hold for more than 5 seconds. Burn-in mode will be released.
How to recover the remote and front key function
If remote and front key cannot operate after miss set special function by front keys, these functions can
recover by below method.
Select No.175 and data set from [0] to [1].
Or
Press the SUB-POWER( ) button and button at the same time, and hold for more than 5 seconds.
Note : If the following operation is performed , it becomes impossible to operate remote and front key.
Press the SUB-POWER( ) button, INPUT SELECT() button and button at the same time, and hold for
more than 5 seconds.
The set turns on the service menu mode.
30
42PMA300A/42PD300TC (PW1A)
(
,
)
Flow Chart
Power cannot be turned on (LED does not light)
Is the input voltage
applied to Power supply unit?
CN61
Yes
Are the voltages
applied to CN63pins
and CNPPSpins
of Power supply unit ?
Yes
Formatter PWB
Picture is displayed. But no sound
Check
Speaker terminal and
Speaker cord.
Locked
Are the voltages
applied to EAJ1pins
of the Audio PWB?
Yes
Are the signals
applied to EAF1pins
of the Audio PWB?
Yes
L ch
R ch
GND
No
AC inlet
No
[CN63] +5V [CNPPS] +30V
Unlocked
No sound
No
+ 5V
+12V
GND
No
Formatter PWB or
Video PWB
Power switch
+3.3V + 5V
Check
applied to EAJ1pins?
F901 T6.3AH 250V
+12V
+10V
Are the voltage
(When EAJ1 is
disconnected.)
Yes
Audio PWB
AC Fuse
FILTER PWB
Power supply unit
No
Power supply
unit
Are there signals
on Speaker Terminals?
Yes
Speaker
No
Audio PWB
31
42PMA300A/42PD300TC (PW1A)
play
Picture is not dis
Is the LED red or
green/orange?
green/orange
Is it the power
saving mode?
Is the voltage
of CN68 pin
on the Power supply unit
Are the voltages
of CN64pin
on the Power supply unit
Panel Module
ed (LED is lighting)
No
5V?
Yes
correct?
Yes
red
Yes
Input signal Cable
or Formatter PWB
No
Power supply unit
No
65V
185V
GND
Is Voltage
applied to CN63 pin
of the Power supply unit?
Yes
Formatter PWB
Is the voltage
of CN68 pin
on the Power supply unit
correct ?
Yes
+3V
GND
+5V
No
No
Power supply
unit
Panel Module
Power supply unit
32
[ POWER BOARD ]
e
42PMA300A/42PD300TC (PW1A)
NO POWER
OK
STB
OK
See
NO PICTURE & SOUND
NO PICTURE
OK
See NO
PICTURE
FUSE
NG
under 130V
& SOUND
STB
OK
Vcc
NO Vs,Va,Vcc,STB
NG
check voltage
D010(K)-J28
over 130V
Q101,R005
NO Vs,Va,Vcc
NG
NG
under 300V
IC001,D005,D006,D007,
D151,IC101,
Q104,Q108,
etc
check voltage
J61-J28
D008,PC003,etc
over 300V
impedance
check D00 1
OK
impedance check
Q003/Q004
OK
impedance
check Q201
OK
impedance
check Q301
See NO POWER
NG
D001
NG
Q003,Q004,
etc
NG
Q201,IC201
D210,Q200,etc
NG
Q301,Q300
D310,etc
IC201,Q200,PC201,
PC202,etc
Va:no uprise
Vs:down after up
Q300,I301,D310
PC301,PC302,
etc
NO PICTURE
impedance
check Vs LINE
OK
impedance
check Va LINE
OK
SW ON
Vs:no uprise
Va:down after up
Q501,Q500,D510,
Q502,PC501,
PC502,etc
NG
NG
NO Vs,Va
open connector
CN807
impedance
check Va LINE
NG
D351
33
OK
PDP module
Va NG
open connector
CN806,CN807
impedance
check Vs LINE
NG
D551
OK
PDP modul
Vs NG
42PMA300A/42PD300TC (PW1A)
7. Self-Diagnosis Function
PDP panel self-diagnosis function
Refer to PDP panel service manual.
Signal circuit self-diagnosis function
This function is for the failure of the signal circuit, for example the phenomenon as below:
"Sometimes power turns off abnormally." "Sometimes picture disappears abnormally."
To enter to this Self-Diagnosis mode, follow the next steps:
Preparation:
1) The Power Cord should be connected to AC line and the Main Power switch should be turned on.
2) Turn the power off by the SUB-POWER( ) button of the monitor or the remote control.
Procedure:
1) Press the SUB-POWER( ) button and button on the bottom of the monitor at the same time, and keep
it for more than 5 seconds after the power turned on.
2)
The monitor will be turned on, and it will display On-Screen Display of the Self-check result and the failure history as
below.
3) Any operation would cancel the Self -Diagnosis mode.
4) The following table shows the OSD symbols and contents of failure PWB in which failure most probably
would be allocated according to the number of blinks.
Check item
Check result
Self Check
H11: OK H15: OK
H16: OK H31: OK
H32: OK H33: OK
F63 F63 - - - - - - - - -
[OSD]
Self check result area
Failure history area
Latest error code
Code stored up in
failure history
C10(* No sync. (Snow noise) OSD of “ ! Check Antenna ”
H11(* Tuner problem Cannot receive the main
H15
H16 Component video SW IC
H31 Color demodulator IC
H32
H33 3D Y/C separator IC
H71(* T/Text IC problem No T/Text
H72(* Sound MPX IC problem No sound from antenna
F63 I
Self checking
item
Problem PhenomenonCause
appears.
signal from antenna
Composite video SW IC
problem
problem
problem
Sync. separator IC
problem
problem
2
C-bus latch problem Cannot store setting data
Cannot receive picture and
audio
Cannot change input mode
No component picture
Cannot change input mode
Abnormal color
Dark picture
Unsynchronized picture Communication error of I601
Abnormal color
Dark picture / No picture
No picture
Cannot change MPX
sound
(Ex. Channel, Volume etc.)
No connection of ANT cable
Preset tuning is not yet
Communication error of U101
Communication error of I201
Communication error of I202
Communication error of I501
Communication error of I302
Communication error of IT01
Communication error of IN01
SCL3/SDA3 latched up
If you clear history of failure, make FACTORY RESET: enter the factory setting mode; press the SUBPOWER( ) button, INPUT SELECT() button and button on the bottom of the monitor at the same time.
And keep it for more than 5 seconds after the power turned on.