Hitachi DV-W1U CHAPTER 2, DISASSEMBLY

2 - 1

Parts to remove Item

Side cover (L), (R) 2-1

2-1

Top cover

2-3

JAK board

Parts to remove Item

2. Disassembly Method

When replacing defective parts, first refer to the "Parts hierarchy chart" shown below.

This chart shows the procedure for parts removal when replacing defective parts.

[How to use the parts hierarchy chart]

(1) Locate the part to be replaced.

(2) Check the parts in the ranks above the part to be replaced and start dismantling.

(3) Replace the defective part and reinstall the parts in the reverse order to that shown in the parts hierarchy chart.

1)Unplug the power cord from the AC outlet.

2)[Removal procedure]

If a special procedure is required when dismantling

any component, it is indicated using numbers.

Follow the numbers (1),(2),(3) ... shown in the

illustrations.

[Reinstallation procedure]

Reinstall each component in the reverse order to

removal when otherwise not specified.

3)Insert card connectors securely all the way as they

are of the direct insertion type.

Parts Hierarchy Chart

Note: Dismantle parts in the eject state.

1. Before Starting Disassembly

Fig. 1-1

2-2

Rear panel

2-3

IF board

2-5

DVD ROM

2-4

SW-CDR board

SW-DVD

(DVD SWITCH)

BOARD

CD-R

2-5

DEC board

2-6

REG (REGULATOR)

BOARD

CHAPTER 2DISASSEMBLY

2-3

REG board

2-4

SW-DVD board

2-4

FLHP board

2-3

Front cover

FLHP

(LCD DISPLAY)

BOARD

JAK

(REAR JACK)

BOARD DEC (DECK)

BOARD

IF (INTERRFACE)

BOARD

SW-CDR

(CDR-SWITCH)

BOARD

Bottom cover 2-6

Contents

Main NOTICE: Leakage Current Cold Check Leakage Current Hot Check SAFETY PRECAUTIONS AC Leakage Test PRODUCT SAFETY NOTICE Notes When Using Service Manual The following shows the contents to be noted when using service manual: 1. Value units used in parts list Parts Resistor Capacitor Coil 2. Values in schematic diagrams CONTENTS CHAPTER 1 1 - 1 GENERAL INFORMATION 1. Specifications 1 - 2 2. Comparison with Previous Model 1 - 3 1 - 4 3. Troubleshooting 3-1. VIDEO CIRCUIT 1 - 5 3-2. AUDIO CIRCUIT 1 - 6 3-3. RECORDER AUDIO CIRCUIT 1 - 7 4. Instructions on Use FRONT FRONT <Display> 1 - 8 Audio output jacks Coaxial digital audio output jack Video output jack S-video output connector CHAPTER 2 2 - 1 2. Disassembly Method Parts Hierarchy Chart 1. Before Starting Disassembly 2 - 2 Fig. 2-1 REAR PANEL Disassembly Procedure Diagrams 2-1 Side cover (L), (R) and Top cover 2 - 3 2-3 JAK board and REG board Fig. 2-3 2-4 Front cover, IF, FLHP, SW-DVD and SW-CDR board Fig. 2-4 2 - 4 2-5 DVD-ROM and DEC board Fig. 2-5 2-6 CD-R and Bottom cover Fig. 2-6 1. CABINET SECTION CHAPTER 3 EXPLODED VIEW 1. MECHANICAL PARTS LIST 4 - 1 CHAPTER 4 REPLACEMENT PARTS LIST 2. ELECTRICAL PARTS LIST 4 - 2 4 - 3 4 - 4 CHAPTER 5 SCHEMATIC, CIRCUIT BOARD AND BLOCK DIAGRAM 5 - 4 5 - 3 LCD DISPLAY [FLHP] SCHEMATIC DIAGRAM LCD DISPLAY [FLHP] 5 - 6 DVD SWITCH, CDR SWITCH 5 - 5 DVD SWITCH [SW-DVD] SCHEMATIC DIAGRAM INTERFACE [IF] SCHEMATIC DIAGRAM INTERFACE [IF] CDR SWITCH [SW-CDR] DVD SWITCH [SW-DVD] CDR SWITCH [SW-CDR] SCHEMATIC DIAGRAM REAR JACK [JAK] SCHEMATIC DIAGRAM REAR JACK [JAK] To DECK-2 [DEC] PG2201 To CD-R CN502/CN801 J1306 REGULATOR [REG] SCHEMATIC DIAGRAM REGULATOR [REG] 465 7 8 DECK-1 5 - 12 DECK-1 [DEC] SCHEMATIC DIAGRAM INVERTER DECK-1 [DEC] To REAR JACK [JAK] PG1301 To DECK-2 1A-33A DECK-2 [DEC] 8A F BUFFER MPEG DECODER DEC CIRCUIT BOARD 6 - 18 6 - 17 [PATTERN No.JA1755-4] DEC [DECK] -SIDE A- DV-WIU IDENTIFICATION OF PARTS LOCATION SW-DVD CIRCUIT BOARD SW-DVD, SW-CDR SW-DVD [DVD SWITCH] RA X JAK CIRCUIT BOARD IDENTIFICATION OF PARTS LOCATION JAK [REAR JACK] -SIDE A- JAK [REAR JACK] -SIDE B- BL J IF, REG CIRCUIT BOARDS IDENTIFICATION OF PARTS LOCATION IF REG BL ER F FLHP CIRCUIT BOARD IDENTIFICATION OF PARTS LOCATION DE AB C 1 1 DE BLOCK DIAGRAM