Hitachi DV-W1U DEC CIRCUIT BOARD

DEC CIRCUIT BOARD

6 - 186 - 17 DEC

DV-WIU

6 - 16 DEC DEC

DEC [DECK] -SIDE A-

ABCDEF

DEC [DECK] -SIDE B-

[PATTERN No.JA1755-4]

FEDCBA

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