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Hitachi P42H401A - User Manual

Hitachi P42H401A
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PA No. 0232
P42H401A / DW3-C
P42H4011A / DW3-C
P42T501A / DW3-C
R/C: CLU-4371UG2 p/n HL02075 P42H401A
R/C: CLU-4372UG2 p/n HL02076 P42H4011A
R/C: CLU-4371A p/n HL02401 P42T501A
SERVICE MANUAL
TO GO TO A CHAPTER, CLICK ON ITS HEADING BELOW
CONTENTS
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 contained in the operating instructions
Unless you are qualified to do so. Before servicing this chassis, it is important that the service
Technician read the “IMPORTANT SAFETY INSTRUCTIONS” in this service manual.
CAUTION:
SAFETY NOTICE
USE ISOLATION TRANSFORMER WHEN SERVICING
SPECIFICATIONS AND PARTS ARE SUBJECT TO CHANGE FOR IMPROVEMENT
SEPTEMBER 2007 HHEA-MANUFACTURING DIVISION
PLASMA DISPLAY PANEL
CONNECTOR DIAGRAMS ...................................................................................... 2
FINAL WIRING DIAGRAM ....................................................................................... 3
PARTS LIST DIFFERENCE ..................................................................................... 4
PWBs “TOP LAYER” ............................................................................................... 5
PANEL PWBs .......................................................................................................... 6
CONNECTOR PART NUMBERS ............................................................................ 7
QUICK REFERENCE PARTS LIST ......................................................................... 8
BLOCK DIAGRAM (DIGITAL MODULE) .................................................................. 9
Components having special safety characteristics are identified by a ! on the schematics and on the parts list in this
Service Data and its supplements and bulletins. Before servicing the chassis, it is important that the service technician
Read and follow the “Important Safety Instructions” in this Service Manual.
This ADDENDUM is made due to the new models P42H401A (DW3C), P42T501A (DW3C) and P42H4011A (DW3C).
They are different to models P42H401 (DW3C), P42T501 (DW3C) and P42H4011 (DW3C). The Main difference is the
Panel, the "A" models use "AE1V" Plasma Panel and the non "A" H/T Models use "A5" & "AE1" Plasma Panel.
Dimensions of both Family models are SAME.
Refer to Service Manual PA0225 when servicing "A" models in regards to other adjustments not covered in this addendum.
This ADDENDUM indicates only the differences and special considerations to be taken when servicing the "A" models.
Updated Jan 18, 08
Updated Nov 30, 07
Updated Dec 11, 07
Version 0232-5
Added Feb 09, 08
(Page 4) Previous Update Corrected Part Numbers for PWB Quick Reference List
(Page 4) Updated Jan 18, 2008 Added Part Numbers for Bezel Assemblies
(Page 5) Updated Nov 30, 07 Corrected Part Numbers for Digi-Main and Added PWB Layout
(Page 6) Updated Dec 11, 07 Added Part Numbers for Logic PWB
(Page 9) Added Feb 09, 08. Added Digital Module (Digi-Main) Block Diagram
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Overview

  1. Function Description
  2. Important Technical Specifications
  3. Usage Features
  4. Maintenance Features

This document is a service manual for Hitachi DW3U series televisions, specifically models P42H401A, P42T501A, and P42H4011A. It provides comprehensive information for servicing and maintaining these devices.

Function Description

The Hitachi DW3U series televisions are designed for displaying video content. They incorporate a Digital Module (DW3U) and are available in 42-inch screen sizes. The models P42H401A, P42T501A, and P42H4011A are part of the DW3U chassis family. The "A" models (P42H401A, P42H4011A) are considered "AE1V" Panel Plasma, while the "T" model (P42T501A) is a "AE5" & "AE1" Plasma Panel. The main difference between these models lies in the panel type and some minor adjustments, but they share the same fundamental chassis and many common components.

The television includes various input and output options, including HDMI, and is designed to process and display both analog and digital signals. The internal architecture involves several key Printed Wiring Boards (PWBs) that manage different functions:

  • Main Digital PWB (Neptune): This is the central processing unit for digital signals.
  • Terminal PWB: Manages external connections and inputs.
  • Power Unit PWB: Regulates and supplies power to all components.
  • Filter PWB: Filters incoming power.
  • Control PWB: Manages user interface and control signals.
  • SD PWB: Likely handles standard definition video processing.
  • LED PWB: Controls LED indicators.
  • Panel PWBs (X-BUS, Y-SUS, SDR-U, SDR-D, X-SUS, A-BUS-L, A-BUS-R, Logic PWB): These boards are specific to the plasma display panel and manage its operation, including scanning, sustain, and data processing.

Important Technical Specifications

The service manual details various parts and their specifications. Key components include:

Main Digital PWB (Neptune):

  • P42H401A: UX28023
  • P42H4011A: UX28023
  • P42T501A: UX28024

Power Unit PWB:

  • HA02271 (for all models)

Filter PWB:

  • JP55133 (for all models)

Terminal PWB:

  • JP55123 (for all models)

Front Filter:

  • KS22126K (for all models)

PDP Panel:

  • DD00938 (for all models)

Panel Connectors and Cables:

  • 42AE1 Signal Cable: FPF39R-CBL02282, FPF39R-CBL02281, FPF39R-CBL02284, FPF39R-CBL02283
  • 42AE1 Power Cable: FPF39R-CBL26951, FPF39R-CBL26961

Miscellaneous Parts:

  • Front Filter: D00938 (42M01ME34.5% FRONT FILTER), D00939 (42M01ME1.0% FRONT FILTER)
  • Connectors: EF26001 (FPF39R-CBL02282, FPF39R-CBL02281, FPF39R-CBL02284, FPF39R-CBL02283, FPF39R-CBL26951, FPF39R-CBL26961)
  • Accessories:
    • Instruction Book: QR70194 (H401 INSTRUCTION BOOK REV4), QR70303 (T501 INSTRUCTION BOOK)
    • Easy Guide: QR70212 (H401 EASY GUIDE REV2)
    • Remote Control: QT60001 (RCU-42AE1V)
    • Bezel Assembly: QD01773 (P42H4011A BEZEL ASSEMBLY), QD01774 (P42T501A BEZEL ASSEMBLY)
    • Speaker Grill: PH43281 (SPEAKER GRILL L (All P42 inch)), PH43282 (SPEAKER GRILL R (All P42 inch))

Integrated Circuits (ICs) and Units: The manual lists numerous ICs and their functions, including:

  • Fuses (FBA1, FBN1)
  • Light Emitting Diodes (DN01, DN02, DN03)
  • IR Receiver (HN01)
  • Schmitt Inverter (IH01)
  • Digital Monolithic ICs (IH04, IH05, IH06, IH07)
  • Clock Buffer (IQ03)
  • SD Memory Card (JW01)
  • Analog Monolithic ICs (IU01, IU02, IU03)
  • Voltage Regulators (IK01, IK02, IK03, IK04, IK05, IK06, IK07, IK08, IK09)
  • Dual LSI Switch (IP03)
  • Multiplexer/Demultiplexer (IT03)
  • 5V Amplifier (IY01)
  • Dual RS-232 Line Driver/Receiver (IY03)
  • Analog/Digital Tuner (UT01)

Usage Features

The Hitachi DW3U series televisions are designed for ease of use, featuring a remote control for operation and various input options for connecting different media devices. The instruction books (H401 and T501) provide guidance on setup and daily operation. The "Easy Guide" further simplifies the user experience.

The televisions are equipped with a Digital Module (DW3U) that handles signal processing, ensuring compatibility with various broadcast standards and media formats. The inclusion of HDMI inputs allows for high-definition connectivity with modern devices.

Maintenance Features

This service manual is primarily intended for qualified service personnel. It outlines the procedures for diagnosing, repairing, and replacing components.

Safety Precautions:

  • CAUTION: Servicing should only be performed by qualified personnel. Improper servicing can lead to electric shock, fire, or other hazards.
  • PRODUCT SERVICE NOTE: Components marked with a triangle (▲) have special characteristics important to safety. When replacing any of these components, carefully read the product safety notice in this service manual. Do not degrade the safety of the receiver through improper servicing.

Troubleshooting and Repair:

  • Connection Diagram: Provides a visual guide to the internal wiring and connections between different PWBs.
  • Final Wiring Diagram: Illustrates the physical layout of components and wiring within the chassis.
  • Parts List Differences & Updates: This section highlights the differences in parts between models and provides updates, referring to Service Manual PA0225 for a complete Parts List.
  • Quick Reference Parts List: Categorizes parts by model, chassis, and PWB type for easy identification.
  • Model Board Layout Diagram: Shows the physical placement of major PWBs within the television.
  • Panel Connectors Layout Diagram: Details the location and part numbers of connectors on the panel.
  • Digital Module Block Diagram: Provides a high-level overview of the signal flow and interconnections within the digital module.

Software Updates:

  • After replacing the Digi-Main PWB, ensure the latest current Software Version is installed. Instructions for obtaining the current version are provided (http://www.hitachiserviceusa.com).

Component Replacement:

  • The manual provides detailed diagrams and part numbers to facilitate the correct replacement of components, including PWBs, cables, and individual ICs.
  • Specific instructions are given for handling and connecting various cables, such as the PS Process cable, ensuring proper orientation and secure connections.

Chassis Information:

  • The chassis is not available as a part.
  • Terminal PWB includes SD PWB, LED PWB, and Control PWBs.

This manual serves as a critical resource for ensuring the longevity and proper functioning of Hitachi DW3U series televisions through accurate and safe maintenance practices.

Hitachi P42H401A Specifications

General IconGeneral
BrandHitachi
ModelP42H401A
CategoryConstruction Equipment
LanguageEnglish

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