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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
6. Troubleshooting --------------------------------10
Updated 3/24/06
7. Block diagram ---------------------------------- 23
SPECIFICATIONS AND PARTS ARE SUBJECT TO CHANGE FOR IMPROVEMENT.
Ver. TA 001.02
----------------------------------------8
No.
Caution
Service Warning
Contents
8. Connection diagram ---------------------------- 26
9. Wiring diagram ----------------------------------- 27
10. Basic block diagram --------------------------- 28
11. Printed wiring board diagram ---------------- xx
12. Disassembly diagram ------------------------- 30
13. Replacement parts list ------------------------ 31
Circuit Board Layout w/ part #'s
TA 001
42HDF52
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Summary of Contents for Hitachi 42HDF52
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Page 1: Table Of Contents
TA 001 HITACHI 42HDF52 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 Plasma Television CAUTIO N FOR SAFETY Please read this page before repair the monitor. The following safety precautions are designed to hel p you stay safe and prevent accidents during the repair work. Please take note o these cautionary flags. This means "Potential to sustain injury or even death."...
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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 cratching or damaging of the plasma screen face, do not knock or rub the surface with sha rp or hard objects. -
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 46 kg (With stand)；41.5 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.
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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
42HDF52 5. Service Adjustments Service Mode This model has a limited service mode; there is no access to I2C parameters of any kind. The only service adjustments that can be performed are the color temperature defaults. Please note that to perform these adjustments, a colorimetry meter, such as a Minolta CA-100 or CA-200 is required to meas- ure the actual screen during adjustments. - Page 9 42HDF52 (Instruction) (Remote) (OSD) Video (Continued from previous page) Color Temperature Cool Press the SLEEP button on the remote three (3) times. A new SLEEP Video line will appear below Color Temperature which co- SLEEP Color Temperature Cool responds to whatever color temp had been selected in the pre- SLEEP Cool Adj.
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Page 10: 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 11 No sound issue Picture is displayed. 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 12 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 13 Remote Control doesn’t work Remote controller doesn’t work. Replace the Remote Try if another Remote Controller. Controller works? 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 14 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 15 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 16 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 17 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 18 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 19 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 20 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 21 \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 22 Packing...
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Page 23: Block Diagram
7. Block Diagram Plasma Television... - Page 24 ATSC Module...
- Page 25 Power Module...
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Page 26: Connection Diagram
8. Connection Diagram... -
Page 27: 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 Wire Ass’y W20/20P E057420004 TE02295 Main Board(PWB-1890) 5097651600... - Page 28 42HDF52 View of Top Circuit Board Layer (Chassis Boards) View of Lower Circuit Board Layer (Panel Boards) Chassis Boards 5052110009 TUNER MODULE 5053911077 ATSC MODULE (not shown, mounted externally on rear cover) 5095670807 AUDIO PWB ASSY 5097642804 CONNECTOR PWB ASSY...
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Page 29: Basic Block Diagram
10. Basic Block Diagram... -
Page 30: Disassembly Diagram
11. (Section Removed) 12. Disassembly Diagram Mechanical... -
Page 31: Replacement Parts List
13. Replacement Parts List Mechanical & Packing part list NO. DESCRIPTION PART NO. HITACHI PART NO. QT`Y Front Cover Ass'y 5095754634 TS05931 Front Cover E641104901 TS05932 Painting Printing LED Lens E640333500 TS05933 IR Lens E640333400 TS05934 Function Key E642851202 TS05941... - Page 32 M17 GASKET 585X10X1 5642025339 TJ03571 M18 GASKET 963X10X1 5642025309 TJ03572 M19 GASKET 624X5X1 5642025316 TJ03573 M20 GASKET 1025X5X1 5642025315 TJ03574 M21 GASKET E642025349 TJ03575 M22 Special Screw 5640223000 TJ03581 M23 Tray I514104256 TJ03591 M24 EPS Bottom (BR) I524100256 TJ03602 M25 EPS Bottom (BL) M26 EPE Bag (1350X1200) I534095256 TJ03603...
- Page 33 Electrical part list DESCRIPTION PART NO. HITACHI PART NO. QT`Y ASSEMBLY PCB-MAIN BOARD (PWB-0890) 5097651600 TS05971 ASSEMBLY PCB-I/O (PWB-0899) 5097651800 TS05972 ASSEMBLY PCB-KEY PAD (PWB-0876) 5097651400 TS05973 ASSEMBLY PCB-RS-232 BOARD 5097643007 TS05974 (PWB-0832) ASSEMBLY PCB-POWER/EMI (PWB-0905) 5097651900 TS05975 ASSEMBLY PCB-AUDIO (PWB-0807)
- Page 34 P813 WIRE ASSEMBLY W3P E057403008 TE02302 P814 WIRE ASSEMBLY W3P E057403010 TE02303 P9001A WIRE ASSEMBLY W8/8P E057408006 TE02304 P9003A WIRE ASSEMBLY W4/4P E057404011 TE02305 PL01 PLASMA DISPLAY PANEL FUJITSU 5051253815 DD00671 S811 POWER SWITCH HUA JIE 5054524535 TJ03641 SP01 SPEAKER BOX ASSEMBLY E055100002 TE02321 T811...