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