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HITACHI
SERVICE MANUAL
Be sure to read this manual before servicing. To ensure safety from fire, electric shock, injury, harmful
radiation and materials, various measures are provided in this Plasma Monitor.
Be sure to read cautionary items described in the manual before servicing.
These servicing instructions are for use by qualified service personnel only. To reduce the risk of electric
shock, do not perform any servicing other than that described in the operating instructions unless you are
qualified to do so.
1. Since the Panel Module and the front Filter are made of glass, handling the broken Module and Filter
carefully and with caution in order not to receive injury.
2. Replacement work should be started after the Panel Module and the AC/DC Power supply have
become sufficiently cool.
3. Special care should be taken when working near the display area in order not to damage its surface.
4. The Panel Module should not be touched with bare hands in order to protect its surface from
blemishes and damage.
5. It is recommended that you use clean soft gloves during the replacement work in order to protect not
only the display area of the Panel Module but also yourself.
1. Features -------------------------------------------3
2. Specifications ------------------------------------4
3. Component Names -----------------------------5
4. Service points ------------------------------------7
5. Adjustment ----------------------------------------8
6. Troubleshooting --------------------------------13
Updated 3/24/06
7. Block diagram ---------------------------------- 27
SPECIFICATIONS AND PARTS ARE SUBJECT TO CHANGE FOR IMPROVEMENT.
Ver. TA 007.2
No.
Caution
Service Warning
Contents
8. Connection diagram ---------------------------- 29
9. Wiring diagram ----------------------------------- 30
10. Basic block diagram --------------------------- 31
11. Printed wiring board diagram ---------------- 32
12. Disassembly diagram ------------------------- 39
13. Replacement parts list ------------------------ 41
Plasma Monitor
1
TA 007
42HDF39
Updated 1/31/07
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Summary of Contents for Hitachi 42HDF39
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Page 1: Table Of Contents
TA 007 HITACHI 42HDF39 SERVICE MANUAL Caution Be sure to read this manual before servicing. To ensure safety from fire, electric shock, injury, harmful radiation and materials, various measures are provided in this Plasma Monitor. Be sure to read cautionary items described in the manual before servicing. - Page 2 CAUTION FOR SAFETY Please read this page before repair the monitor. The following safety precautions are designed to help you stay safe and prevent accidents during the repair work. Please take note of these cautionary flags. This means "Potential to sustain injury or even death." Warning This means "Potential to sustain breakage or irreparable damage."...
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Page 3: Features
PRECAUTIONS Cleaning the monitor's plasma screen panel Before cleaning the monitor, turn it off and disconnect the power plug from the power outlet. To prevent scratching or damaging of 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 second soft cloth. -
Page 4: Specifications
2. Specifications Display Approx. 42inches (922 (H) x 522 (V) mm, diagonal 1059mm) dimensions Panel Resolution 1024 (H) x 1024 (V) pixels 1036 (W) x 773 (H) x 300 (D) mm (With stand) 1036 (W) x 713 (H) x 121 (D) mm (Without stand) Net dimensions 41 kg (With stand) 33.6 kg (Without stand) Net weight... -
Page 5: Component Names
3. Component names Main unit Control panel Al Adjustment buttons are located on the bottom of the control panel Indications for each button's function can be found on the inside of the control panel cover. 1. POWER 5. VOL 2. UP 5. - Page 6 Remote Control 1. Power Button 2. Mute Button 3. Recall Button 4. Quick Buttons 5. PC Buttons 6. Video Buttons 7. NTSC Buttons 8. DTV Button 9. Numbers Button 10. RTN Button 11. Exit Buttons 12. Menu Button 13. Up/Down/Left/Right Button 14.
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Page 7: Service Points
4. Service points Lead-free solder This product uses lead-free solder (unleaded) to help protect 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."... -
Page 8: Adjustment
5. Adjustment & Software Update This model has a factory mode, where the technician can access and adjust some of the color temperature settings. The factory mode has several different appearances, depending on the input signal. Preliminary To access the Factory Mode, the Plasma Monitor must be running. - Page 9 Page intentionally left blank...
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Page 13: Troubleshooting
6. Troubleshooting The flow chart shown below will help you to troubleshoot your Monitor set with it doesn’t display normally. Each procedure offers a simple way to check for system errors. Before starting, ensure that there is a signal in and that the Monitor is turned on. - Page 14 No sound issue Picture is diaplayed. But no sound Take off the back cover and check ifl wires of the speakers terminals have been well Check connected to the PCB-Main and speakers ? No sound Are the voltages applied to CN2①②...
- Page 15 No picture issue Picture is not diaplayed (LED is lighting) Is the LED red or green ? Green Is voltage applied to CN11 ⑩(st-5v) ? Is it the power saving mode ? PCB-Main Power supply unit Input signal cables or PCB-Main Is the voltages of CN10/CN11 on the...
- Page 16 Remote Control doesn’t work Remote controller doesn’t work. Replace the Remote Try if another Remote Controller works? Controller. Put new batteries to Check if batteries are the remote control placed correctly? Test again Take off the back cover. Check if the wire of PCB-IR Connect the wire has been well connected to properly.
- Page 17 Key pad doesn’t work Key pad doesn’t work. Take off the back cover and check if Connect the wire of PCB-Speaker connectoer the wire has been well connected to the properly PCB-Key Pad and PCB-Main? Test again Change PCB-Key Pad and connect all wires properly.
- Page 18 No PC signal (Analog RGB) No PC signal. Check if PC source is Check PC by PC working on other Service Provider display? Connect the D-Sub Check if the D-Sub cables cables properly have been well connected to the PDP? Test again Check if the signal...
- Page 19 NTSC TV source no signal No NTSC TV Signal Make sure the OSD TV Select to the correct source option is correct option (Cable/Air) Check if the TV cable has Connect the TV been well connected to the Test cable properly PDP? again Check if the “Channel...
- Page 20 DTV source no signal Cannot receive any digital channel Turn the TV off Is the multi I/O connector Connect it firmly connected with scaler board Is the signal received Problem has been resolved Is the tuner connected with antenna / cable Connect it firmly connector Is the signal received...
- Page 21 No optical audio sound No audio service Is the multi I/O connector Connect it firmly connected with scaler board Is the audio work Problem has been resolved Is it in “MUTE” mode Press “MUTE” or “VOL+” so that audio work Scan this channel by Problem has Be sure this channel...
- Page 22 No signal issue (Composite, SV, YCbCr, YPbPr) No signal Enable source and Check if the signal source connect the signal wire is available and been well properly. connected? Check if the PCB-I/O has Connect the PCB-I/O been well connected to properly.
- Page 23 No HDMI signal issue No signal Enable source and Check if the signal source connect the signal wire is available and been well properly. connected? Take off the back cover. Check if the PCB-HDMI Connect the has been well connected PCB-HDMI properly.
- Page 24 Software can’t be updated Can not update software Check if RS-232 Cable Connect RS-232 has been well connected Cable properly. to the PDP? Take off the back cover. Test again Check if all wires have Connect the wires been well connected to the properly.
- Page 25 Power board issues 1. No power NO POWER NO Vs, Va, Vcc, STB impedance check FUSE D001 D001 impedance check Q003/Q004 Over 130V Q003/Q004/R005 ect check voltage D020(k)-J051 impedance check Q201 Under 130V Q200/Q201/Q202/D210 D151, D101 etc See NO PICTURE & impedance check SOUND Q301...
- Page 26 3. No picture NO PICTURE NO Vs, Va, Vcc impedance check Vs LINE Open connector CN64 impedance check Va LINE impedance check Vs LINE Open connector SW ON CN64 impedance D551, D550 Va:no uprise Vs:no uprise check Va LINE Vs:down after up Va:down after up Q303, PC301, Q501,D510,...
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Page 27: Block Diagram
7. Block Diagram Plasma Monitor... - Page 28 Power Module...
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Page 29: Connection Diagram
8. Connection Diagram... -
Page 30: Wiring Diagram
9. Wiring Block Diagram Item Wire Part No. HITACHI Part No. Item Wire Part No. HITACHI Part No. Item Board Part No. HITACHI Part No. P205 Wire Ass’y W10/10P E057410010 TE02294 P207 FFC 50P+AI E784650506 TE02751 IR Board(PWB-0874) 5097659801 TE03511 P203 Wire Ass’y W11/10P... - Page 31 Panel Boards Layout X-SUS PWB Y-SUS PWB LOGIC PWB located behind Main Board A-BUS-R PWB A-BUS-L PWB See page 44 for p/n's CH 2...
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Page 32: Basic Block Diagram
10. Basic Block Diagram... -
Page 33: Printed Wiring Board Diagram
11. Printed Wiring Board Diagram Main Board Top Side... - Page 34 Main Board Bottom Side...
- Page 35 I/O Board Top Side ● RS-232 Board Top Side Audio Board Top Side...
- Page 36 Audio Transfer Board Top Side(L)/Bottom Side(R)
- Page 37 Power/EMI Board Top Side(L)/Bottom Side(R) Speaker Connector Board Top Side(L)/Bottom Side(R) Key Pad Top Side(L)/Bottom Side(R) IR Board Top Side(L)/Bottom Side(R)
- Page 38 HDMI Board Top Side(L)/Bottom Side(R)
- Page 39 Power Board...
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Page 40: Disassembly Diagram
12. Disassembly Diagram Mechanical... - Page 41 Packing...
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Page 42: Replacement Parts List
13. Replacement Parts List Mechanical & Packing part list NO. DESCRIPTION PART NO. Front Cover Ass'y 5096454886 Function Key E642851202 Rear Cover Ass'y 5096154886 SPK Cover E641105000 Power Cap E641100500 Edge Saddle E642678500 Tape of al foil(25x580) E648006524 Tape of al foil(25x980) E648006525 Tape of al foil(50x20) E648006506... - Page 43 M38 Clip PE Bag I533251157 M39 EPS Bottom(BM) I524100456 M40 EPE Bag I534100256...
- Page 44 Electrical part list DESCRIPTION PART NO. ASSEMBLY PCB-MAIN BOARD (PWB-0891) 5097652009 ASSEMBLY PCB-I/O (PWB-0899) 5097651805 5097659800 ASSEMBLY PCB-KEY PAD (PWB-0874) ASSEMBLY PCB-KEY IR (PWB-0874) 5097659801 ASSEMBLY PCB-RS-232 BOARD 5097643008 (PWB-0832) ASSEMBLY PCB-POWER/EMI (PWB-0905) 5097651912 ASSEMBLY PCB-AUDIO (PWB-0807) 5097639914 ASSEMBLY PCB-AUDIO POWER 5097651913 (PWB-0905) ASSEMBLY PCB-CONNECTOR (PWB-0833)
- Page 45 P9001A WIRE ASSEMBLY W8/8P E057408006 P9003A WIRE ASSEMBLY W4/4P E057404011 S811 POWER SWITCH PANASONIC E054501008 SP01 SPEAKER BOX ASSEMBLY E055100002 T811 E061133007 EMI FILTER SOCKET TYPE DIT T811A HEATED SHRINK TUBE E075500001 CABLE LOGIC-ABUSL 5000100119 A3(FPF29R-CBL001401) CABLE LOGIC-XSUS 5000100120 A3(FPF29R-CBL001411) CABLE LOGIC-YSUS 5000100121 A3(FPF29R-CBL001412)