Hitachi CMP4121HDE User manual

Plasma Display
October 2002
SERVICE MANUAL
Be sure to read this manual before servicing. To assure safety from fire, electric shock, injury,
harmful radiation and materials, various measures are provided in this Plasma display.
Be sure to read cautionary items described in the manual to maintain safety before servicing.
1. Since Panel Module and Front Filter are made of glass, handling ofthe broken Module and
Filter shall be handled carefully in order not to be injured.
2. Replacment work shall be started after the Panel Module and the AC/DC Power supply become
sufficiently cool.
3. Special care shall be taken to the display area in order not to damage its surface.
4. The Panel Module shall not to be touched with bare hand to protect its surface from stains.
5. Itis recommended using clean softgloves during the replacment work in order toprotect not
only the display area of the Panel Module but also the serviceman himself.
6. The Chip Tube of Panel Module (located upper left of the back) and flexible cables connecting
Panel glasses to drive circuit PWBs are very weak,so sufficient care should be taken so as
not to breakthem.Ifyou break the Chip Tube, the Panel will not display any more.
1. Features･････････････････････････2
2. Specifications････････････････････2
3. Lead free solder･･････････････････3
4. Names of each part･･･････････････4
5. Trouble shooting･････････････････5
6. Block diagram･･･････････････････14
7. Disassembly Diagram････････････15
8. Re-Adjustment ･････････････････18
9. Wiring Drawing･･････････････････22
10. Replacement Parts list･･･････････24
SPECIFICATIONS AND PARTS ARE SUBJECT TO CHANGE FOR IMPROVEMENT.
SM0064
Caution
Contents
Serviceman Warning
Mod. PD1 A
CMP4121HDE
CMP4202E ＊
42PMA400E

1. Features
 42 inches Hi-Vision compatible high-definition color plasma display panel.
 Newly developed Multi-scanning converter provides a multi-scan coverage of TV signals
through to PC analog signals (15 kHz to UXGA(107 kHz)).
 Large high-quality display images free from color miss-convergence and display distortion, as
well as from geomagnetic effect and the magnetic effect of ambient power lines.
 Multimedia input support
Two minis D-sub terminal have been provided for RGB input. It is possible to switch between
RGB signals and component signals* from the Menu screen or the remotecontroller,
therefore use is possible with equipment ranging from personal computer to imaging device.
*Itis possible when the VIDEO unit is inserted.
2. Specifications
PDP Module 42 inch ALIS PDP panel (aspect ratio 16:9)
Description FPF42C128128UB
Pixel pitch 0.90 mm(H) x 0.51 mm(V)
Pixel structure RGB striped
RGB 1
RGB 2
(mD-sub15p) x 2
Video : 0.7 Vp-p
Sync. : Separate H/V, TTL level
Composite H/V, TTL level
Sync. on Green at 0.30 Vp-p
*: A Component input is attained at a D-sub terminal.
Video 1
(RCAx1,
S-terminalx1)
Composite Video or S-video (forS1, S2)
NTSC3.58, NTSC4.43, PAL, M-PAL, N-PAL, PAL60,SECAM
Video : Composite 1.0 Vp-p
S-video Y: 1.0 Vp-p, C:0.29Vp-p
Sync. : Composite sync
Video 2
(RCAx3)
Component Video
Y,PB,PRor Y,CB,CR:
(480I, 480P, 576I, 576P, 720P, 1080I, 1035I)
Video: Y : 1.0 Vp-p
Pb/Cb,Pr/Pr:0.7Vp-p
Sync. : Superimposed with Y signals
Input
Signal
SCART
(VIDEO1,VIDEO2)
PAL,NTSC Video : R/G/B 0.7Vp-p (Video2)
Sync : Composite Sync 1.0Vp-p (Video1)
Output
Signal
Video 1
(RCAx1)
Composite Video
Loop-through of input video 1 signal
Colors 16.777 million
Synchronization Horizontal : 15 –107 kHz
Vertical : 50 – 85 Hz
Resolution Horizontal : 1024 dots (max.)
Vertical : 1024 lines (max.)
Viewable Image Size 42 inches (1060 mm), diagonal (typical)
Viewable Image Area Horizontal : 922 mm (typical)
Vertical : 522 mm (typical)
Color Temperature 1: Cool 2: Normal 3: Warm 4:User
Warm-up Time 30 minutes to reach optimum performance level.
Power Supply AC 100 - 120 / 200 – 240 V (3.7A /2.0A) 50/60 Hz
(automatically selected)
Power Consumption : 350 W (typical, without sound)
(provided with power save circuit.)
Dimensions 1030 (W) ×636 (H) ×89 (D) mm
Weight 31 kg (approx.) exclude option stand
Environmental Condition Operation Storage
Temperature 5ºC to 35ºC －15ºC to 60ºC
Humidity 20% to 80% 20% to 90%
2

3. 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 
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 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 
Recommended temperature range per part:
Part Soldering iron temperature
Mounting (chips) on mounted PCB 320 r
Mounting (chips) on empty PCB 380 r
Chassis, metallic shield, etc. 420 r
SIGNAL board
VIDEO board
JOINT board
ԛAUDIO board/FILTER board/LED,RECEIVER board/TACT SW board/SPEAKER terminal board
The PWB assembly which has used lead free solder
3

4. Names of each part
 Outlook
SUB-POWERSELECTMENURGB/
VIDEO VOLUME
FRONT VIEW
Filter
Panel
Front
Frame
Control
Switches
HITACHI
HITACHIHITACHI
HITACHI
Ｒ
Ｌ／ＭＯＮＯ
ＲＧＢＨＶ
Ｄ－ＳＵＢＩＮ
ＡＵＤＩＯＩＮ
ＲＧＢ１ＲＧＢ２
ＲＬ
－－＋＋
ＳＰＥＡＫＥＲ
Ｒ
Ｌ／ＭＯＮＯ
ＡＵＤＩＯＩＮ
ＣＯＭＰＯＮＥＮＴＩＮ
ＶＩＤＥＯ２
ＳＰ／ＣＰ／ＣＢＢＲＲＶＩＤＥＯＹ
（８Ω８Ｗ）
ＴＥＲＭＩＮＡＬＶＩＤＥＯ１
ＰＨ０７６９１
Ｎｅａｒｅｒｔｅｒｍｉｎａｌ
手前側端子
Ｆｕｒｔｈｅｒｔｅｒｍｉｎａｌ
奥側端子
ＣＯＭＰＯＳＩＴＥＩＮ
REAR VIEW
Rear
Cover
RGB Input Terminals
Video Input Terminals
Speaker
Terminals
AC Inlet
AC Switch
 Input terminal(D-sub connector)
PinNo Signal
1 Red Video, ( PR/CR )
2 Green Video (Sync. optional), (Y)
3 Blue Video (PB/CB)
4 No connection
5 No connection
6 Red Ground ( PR / CRGround)
7 Green Ground ( Y Ground)
8 Blue Ground ( PB / CBGround)
9 No connection
10 Ground
11 No connection
12 [SDA]
13 H.Sync. or H/V composite
14 V.Sync. [V.CLK]
15 [SCL]
Message table
☛Onscreen display
Indication Condition
The monitor indicates the
message
“NO SYNC SIGNAL”.
The monitor detects no sync signal.
The monitor indicates the
message
“POWER SAVE”.
After a state whereby it does not sense a sync signal for 5 seconds
continued.
The monitor indicates the
message
“OUT OF FREQUENCY”.
The monitor detects a sync signal which is out of specification, or
unstable.
4
(
)
:with RGB component input.

5. Trouble shooting
5.1 Trouble Shooting of Plasma Monitor
5
55
5
Are
Voltage
applied to pins ④⑦,⑪(PW01)
of the Signal PWB
④+12V
⑦+6V
⑪+4.5V
⑨GND
Signal PWB
AC/DC
Power unit
No
Yes
Power can not be turned on
(
LED is not li
g
ht
)
Is the input voltage
applied to the AC/DC
Power unit ?
(CN61 ①, ③)
AC inlet Power switch AC Fuse
F901 T6.3AH 250V
No
Yes
Speaker
Picture is displayed. But no sound
Are
Voltage
applied to pins ①(PVA)
of the Audio PWB
No
AC/DC
Power unit
Yes ①+22～28V
④GND
No
Are
there signals on
Speaker Terminals
Yes Audio PWB
Are Signal
applied to
pin ⑤⑧ and ⑨⑪
(PVA1)of the Audio PWB
No
Signal PWB
Yes
FILTER PWB

6
66
6
Yes
No
Are Voltages
of the pin ①､⑩(CN64)
on the AC/DC Power
unit collect ?
①+50～70V
⑩+75～90V
⑥GND
Is Voltage
of the pin ①(CN68)
on the AC/DC Power
unit collect ?
No
①+3V
③GND
Yes Panel
Module
Panel Module
AC/DC
Power unit
No
No
Is the LED red or
green/orange
Picture is not dis
p
la
y
ed
(
LED is li
g
htin
g)
Do the Fans
rotate?
red
green/orange Are
Voltage
applied to pins ⑦(PW01)
of the Signal PWB
No
AC/DC
Power unit
Yes
Is pin①of
CN304 and PFAN1
7V more?
No
DC Fan
Yes
AC/DC Power
unit or Signal
PWB
Is Voltage
of the pin ⑥(CN68)
on the AC/DC Power
unit 5V
Yes
AC/DC
Power unit
⑦+6V
⑨GND
Yes
Is it the powe
r
saving mode?
Signal PWB
No
Yes
Input signal Cable
or Signal PWB

5.2 Trouble Shooting of Panel Module from the point view of Fault Symptom
NO
Fault
contents
Fault status Suspected fault
location
Analysis
procedure
and measure
1 After momentarily going
on, the screen becomes
black immediately or after
a few seconds. (Main
power is turned off.)
X-SUS
Y-SUS
Panel chassis
LOGIC
ABUSL
ABUSR
2
Entire
screen does
not light.
Screen lights dimly even
on the back screen.
LOGIC Replace LOGIC
board
3 Single vertical line (of
different color)
Panel chassis
LOGIC
4
Vertical line
Vertical line from the
middle of effective scan
area (Vertical line of
different color)
Panel chassis Replace panel
chassis
5 Bar width of 1/7 of
horizontal size or in
multiples of 1/7, is
displayed. Abnormal
display.
Panel chassis
ABUSL
ABUSR
LOGIC
Above boards are
connected.
6
Vertical bar
Bar width of 3/7 or 4/7 of
the screen width, is
displayed. Abnormal
display. (Vertical line of
different color)
ABUSL
ABUSR
LOGIC
Above boards are
connected.
7 Horizontal
line
Single horizontal line (No
light) Or single horizontal
line does not light among
the effective scanning
area.
Single horizontal line
does not light.
Panel chassis Replace panel
chassis
8 Horizontal
bar
Bar width of 1/8 or
multiples of 1/8 of the
screen height, is
displayed.
Abnormal (Screen does
not light)
Panel chassis Replace panel
chassis
9 Bar width of 1/2 of the
screen height.
Abnormal display
(Screen does not light)
Panel chassis
Y-SUS
X-SUS
Above boards are
connected.
7

NO
Fault
contents
Fault status Suspected
fault
location
Analysis procedure
and measure
10 Image
sticking
Fixed display contents
are always displayed.
Panel
chassis
Perform all white heat
run. After judgment,
replace panel chassis
11 Stains Oval-shaped points
having abnormal
luminance are scattered
in the upper or lower part
of screen.
Panel
chassis
Perform all white heat
run. After judgment,
replace panel chassis
5.3 Trouble Shooting of Panel Module by using a Personal Computer
5.3.1 Setting up computer
Install the panelinf.exe file provided by DMD to the hard-disk of your PC.
5.3.2 Connecting a computer
(1) Connect the RS-232C terminal of the computer to the RS-232C terminal of the plasma monitor, using
RS232C cable as above.
(2) Turn on the main power of the computer.
(3) Turn on the main power of the plasma monitor.
ABCDE
8
②
⑤
③②
⑤
③
D-sub 9P
(female) D-sub 9P
(female)
PC
Plasma Monitor
RS232C
Connector
RS232C
Cable

(4) For computer running WINDOWS:
Select
panelinf.exe from Explorer or My Computer →<Enter> or <Double Crick>.
For computer running DOS/V:
C : ¥ >panelinf →<Enter>
(5) The following screen appears.
*1 : Use COM1: the computer's communication port.
*2 : Set the communication setup as follows.
Speed : 9600 bps
Data:7bits
Parity : none
Stopbit:1bit
*3 : If the program starts up while the monitor power is not yet on, the menu
screen will not be displayed. At that time, turn on the monitor power, then the program
start up again.
5.3.3 Problem Analysis Procedure
(1) Check the error code (ERRC xx : hexadecimal number) from the CURRENT, (and BEFORE**)
error code read-out menu and detect the faulty position from the following table.
ERRC 00 is not valid.
(2) Using the
↑key or ↓key, move the ** mark to EXIT and press <ENTER> key then
the screen returns to the WINDOWS or DOS screen.
PANEL DATA READ
01：
：：
：COND [Hex] xx
** 02：
：：
：ERRC(CURRENT) [Hex] xx
03：
：：
：ERRC(BEFORE1) [Hex] xx
04：
：：
：ERRC(BEFORE2) [Hex] xx
05：
：：
：ERRC(BEFORE3) [Hex] xx
06：
：：
：ERRC(BEFORE4) [Hex] xx
07：
：：
：ERRC(BEFORE5) [Hex] xx
08：
：：
：ERRC(BEFORE6) [Hex] xx
09：
：：
：ERRC(BEFORE7) [Hex] xx
10：
：：
：ERRC(BEFORE8) [Hex] xx
11：
：：
：ERRC(BEFORE9) [Hex] xx
12：
：：
：ERRC(BEFORE10) [Hex] xx
13：
：：
：ERRC(BEFORE11) [Hex] xx
14：
：：
：ERRC(BEFORE12) [Hex] xx
15：
：：
：ERRC(BEFORE13) [Hex] xx
16：
：：
：ERRC(BEFORE14) [Hex] xx
17：
：：
：ERRC(BEFORE15) [Hex] xx
18：
：：
：OPERATION HOURS [Dec] xx
EXIT
9

Error code table (H1 panel)
Suspected faulty board
(In the order of higher probability of defect)
ERR
Code
Detect
position
(board)
Contents
(1) (2) (3) (4) (5) (6) (7)
Remarks
04 LOGIC 3.3V power voltage has dropped LOGIC PSU
06 3.3V power startup is faulty X-SUS Y-SUS ADM1 - 8 PSU ABUS-L ABUS-R LOGIC
18 Internal I2C_SCL1_LOW level LOGIC
19 Internal I2C_ACK does not respond LOGIC
1C EEPROM initial setting is defective LOGIC
1D EEPROM write-down is defective LOGIC
1E EEPROM user initial setting is defective LOGIC
1F EEPROM factory setting reading is defective LOGIC
24 X-SUS Vex power voltage has decreased X-SUS LOGIC
25 Vex power voltage is excessive X-SUS
26 Vex power startup is faulty. X-SUS LOGIC
28 Vx power voltage has dropped X-SUS LOGIC
29 Vx power voltage is excessive X-SUS
2A Vx power startup is faulty. X-SUS LOGIC
2C Vpx voltage has dropped X-SUS LOGIC
2D Vpx voltage is excessive X-SUS LOGIC
30 Vpx1 voltage has dropped X-SUS LOGIC
31 Vpx1 voltage is excessive X-SUS LOGIC
34 Vpx2 voltage has dropped X-SUS LOGIC
35 Vpx2 voltage is excessive X-SUS LOGIC
39 Vs power current is excessive (during operation) X-SUS Panel LOGIC
3B Vs power current is excessive (during startup) X-SUS Panel LOGIC
44 Y-SUS Vey power voltage has dropped Y-SUS LOGIC
45 Vey power voltage is excessive Y-SUS
46 Vey power startup is faulty. Y-SUS LOGIC
4C Vpy voltage has dropped Y-SUS LOGIC
4D Vpy voltage is excessive Y-SUS LOGIC
50 Vpy1 voltage has dropped Y-SUS LOGIC
51 Vpy1 voltage is excessive Y-SUS LOGIC
54 Vpy2 voltage has dropped Y-SUS LOGIC
55 Vpy2 voltage is excessive Y-SUS LOGIC
59 Vs power current is excessive (during operation) Y-SUS Panel LOGIC
5B Vs power current is excessive (during startup) Y-SUS Panel LOGIC
5D Vs power current is excessive (during operation) Y-SUS SDM Panel LOGIC
61 PSU Vs power voltage is excessive PSU LOGIC
62 Vs power startup is faulty. X-SUS Y-SUS PSU LOGIC
64 Vex and Vpy power voltage has dropped LOGIC X-SUS Y-SUS
65 Vex and Vey power voltage is excessive X-SUS Y-SUS
66
X-SUS
Y-SUS
Vex and Vey power startup is faulty. LOGIC X-SUS Y-SUS
68 X-SUS Vw power voltage has dropped Y-SUS X-SUS LOGIC
69 Vw power voltage is excessive X-SUS
6A Vw power startup is faulty. Y-SUS X-SUS LOGIC
6C Vpx and Vpy voltage has dropped LOGIC X-SUS Y-SUS
6D
X-SUS
Y-SUS Vpx and Vpy voltage is excessive LOGIC X-SUS Y-SUS
10