Hitachi 42HDF52A Service Manual
Hide thumbs Also See for 42HDF52A:

Advertisement

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 ---------------------------------- 26
SPECIFICATIONS AND PARTS ARE SUBJECT TO CHANGE FOR IMPROVEMENT.
Ver. TA 008.1
Caution
Service Warning
Contents
8. Connection diagram ---------------------------- 29
9. Wiring diagram ----------------------------------- 30
10. Basic block diagram --------------------------- 31
12. Disassembly diagram ------------------------- 39
13. Replacement parts list ------------------------ 41
Plasma Television
1
No.
TA 008
42HDF52A

Advertisement

Table of Contents
loading

Summary of Contents for Hitachi 42HDF52A

  • Page 1: Table Of Contents

    TA 008 HITACHI 42HDF52A 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."...
  • 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 771 (H) x 300 (D) mm (With stand);1036 (W) x 713 (H) x 121 (D) mm (Without stand) Net dimensions 38.8 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 4. RIGHT 7. SELECT 2.
  • 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.
  • 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 Television must be running.
  • Page 9 Page intentionally left blank...
  • Page 10 Page intentionally left blank...
  • Page 11 Page intentionally left blank...
  • Page 12 Page intentionally left blank...
  • 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/DVI) 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 or DVI or DVI cables cables have been well properly connected to the PDP? Test again...
  • 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 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 24 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 25 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,...
  • Page 26: Block Diagram

    7. Block Diagram Plasma Television...
  • Page 27 ATSC Module...
  • Page 28 Power Module...
  • 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 P206 Wire Ass’y W20/20P E057420004 TE02295 Key Pad Board(PWB-0874)
  • Page 31: Basic Block Diagram

    10. Basic Block Diagram...
  • Page 32: Printed Wiring Board Diagram

    11. Printed Wiring Board Diagram Main Board-Top Side...
  • Page 33 Main Board-Bottom Side...
  • Page 34 I/O Board-Top Side ● RS-232 Board-Top Side Audio Board-Top Side...
  • Page 35 Audio Transfer Board-Top Side(L)/Bottom Side(R)
  • Page 36 Power/EMI Board-Top Side(L)/Bottom Side(R) ATSC Connector Board-Top Side(L)/Bottom Side(R)
  • Page 37 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 Power Board...
  • Page 39: Disassembly Diagram

    12. Disassembly Diagram Mechanical...
  • Page 40 Packing...
  • Page 41: Replacement Parts List

    13. Replacement Parts List Mechanical & Packing part list NO. DESCRIPTION PART NO. HITACHI PART NO. QT`Y Front Cover Ass'y 5095671054 TS07391 Function Key E642851202 TS05941 Rear Cover Ass'y 5095671055 TS07401 SPK Cover E641105000 TJ03611 Power Cap E641100500 TJ03961 Edge Saddle...
  • Page 42 M37 Shipping Label E030409339 TJ03605 M38 Grip Joint I534100356 TJ04071 M39 Clip PE Bag I533251157 TJ03606 M40 EPE Bag (back) I534100156 TE02351 M41 EPE Bag (front) I534100256 TE02352 M42 EPS Bottom(BM) I524100456 TJ05311...
  • Page 43 Electrical part list DESCRIPTION PART NO. HITACHI PART NO. QT`Y ASSEMBLY PCB-MAIN BOARD (PWB-0890) 5097651603 TE04021 ASSEMBLY PCB-I/O (PWB-0899) 5097651805 TS06662 ASSEMBLY PCB-KEY PAD (PWB-0874) 5097659800 TE03501 ASSEMBLY PCB-KEY IR (PWB-0874) 5097659801 TE03511 ASSEMBLY PCB-RS-232 BOARD 5097643008 TS06665 (PWB-0832) ASSEMBLY PCB-POWER/EMI (PWB-0905)
  • Page 44 S811 POWER SWITCH PANASONIC E054501008 TE02922 SP01 SPEAKER BOX ASSEMBLY E055100002 TE02321 T811 EMI FILTER SOCKET TYPE DIT E061133007 TE03191 T811A HEATED SHRINK TUBE E075500001 TE02331 0.02M PL01 PANEL MODULE (FPF42C128128UE-55) 5051253820 DD00721 PWB ASS'Y X-SUS A3(FPF29R-XSS0037) 5053911111 TS06287 PWB ASS'Y Y-SUS A3(FPF29R-YSS0038) 5053911112 TS06288 PWB ASS'Y ABUS-L A3(FPF29R-ABL0030)

Table of Contents