Hitachi DVP-735-U, DVP-533-U Service Manual

TK No. 9301E

DV-P735U

SERVICE MANUAL

DV-P735U(C)

DV-P533U

SPECIFICATIONS AND PARTS ARE SUBJECT TO CHANGE FOR IMPROVEMENT

DVD PLAYER

2003 Digital Media Division, TokaiFebruary

1 CAUTIONS FOR SAFETY IN PERFORMING

REPAIR . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-1

1-1 LASER BEAM SAFETY PRECAUTIONS . . . . . . . . 1-1

1-2 IMPORTANT SAFETY PRECAUTIONS . . . . . . . . . 1-2

1-2-1 Product Safety Notice . . . . . . . . . . . . . . . . . . . . . 1-2

1-2-2 Precautions during Servicing . . . . . . . . . . . . . . . 1-2

1-2-3 Safety Check after Servicing . . . . . . . . . . . . . . . . 1-3

1-3 STANDARD NOTES FOR SERVICING . . . . . . . . . . 1-4

1-3-1 Circuit Board Indications . . . . . . . . . . . . . . . . . . . 1-4

1-3-2 Instructions for Connectors . . . . . . . . . . . . . . . . . 1-4

1-3-3 How to Remove/Install Flat Pack-IC . . . . . . . . . . 1-4

1-3-4 Instructions for Handling Semi-conductors . . . . . 1-6

2 GENERAL INFORMATION . . . . . . . . . . . . . . . . .2-1

2-1 SPECIFICATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1

2-2 COMPARISON OF MODELS. . . . . . . . . . . . . . . . . . 2-2

2-3 OPERATING CONTROLS AND FUNCTIONS. . . . . 2-4

3 MAINTENANCE AND INSPECTION. . . . . . . . . .3-1

3-1 TROUBLESHOOTING . . . . . . . . . . . . . . . . . . . . . . . 3-1

3-2 FIRMWARE RENEWAL MODE . . . . . . . . . . . . . . . . 3-7

3-2-1 How to Update the Firmware Version . . . . . . . . . 3-7

3-2-2 How to Verify the Firmware Version . . . . . . . . . . 3-8

SCHEMATIC AND BLOCK DIAGRAMS/CBA'S

1 SCHEMATIC DIAGRAMS/CBA’S AND TEST POINTS . 1

2 WIRING DIAGRAM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

3 SCHEMATIC DIAGRAMS . . . . . . . . . . . . . . . . . . . . . . . . 4

3-1 DVD Main 1/3 Schematic Diagram . . . . . . . . . . . . . . . 4

3-2 DVD Main 2/3 Schematic Diagram . . . . . . . . . . . . . . . 5

3-3 DVD Main 3/3 Schematic Diagram . . . . . . . . . . . . . . . 7

3-4 AV 1/3 Schematic Diagram . . . . . . . . . . . . . . . . . . . . . 8

3-5 AV 2/3 Schematic Diagram . . . . . . . . . . . . . . . . . . . . . 9

3-6 AV 3/3 & Function Schematic Diagram . . . . . . . . . . . 10

4 WAVEFORMS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

5 CIRCUIT BOARD DIAGRAMS . . . . . . . . . . . . . . . . . . . 12

5-1 AV CBA Top View . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

5-2 AV CBA Bottom View. . . . . . . . . . . . . . . . . . . . . . . . . 13

5-3 Function CBA Top/Bottom View . . . . . . . . . . . . . . . . 14

6 BLOCK DIAGRAMS . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

6-1 System Control/Servo Block Diagram . . . . . . . . . . . . 15

6-2 Digital Signal Process Block Diagram . . . . . . . . . . . . 16

6-3 Video/Audio Block Diagram . . . . . . . . . . . . . . . . . . . . 17

6-4 Power Supply Block Diagram. . . . . . . . . . . . . . . . . . . 18

7 SYSTEM CONTROL TIMING CHARTS . . . . . . . . . . . . 19

8 IC PIN FUNCTION DESCRIPTIONS . . . . . . . . . . . . . . 20

9 LEAD IDENTIFICATIONS . . . . . . . . . . . . . . . . . . . . . . . 21

4 DISASSEMBLY . . . . . . . . . . . . . . . . . . . . . . . . . .4-1

4-1 CABINET DISASSEMBLY INSTRUCTIONS . . . . . . 4-1

4-1-1 Disassembly Flowchart . . . . . . . . . . . . . . . . . . . . 4-1

4-1-2 Disassembly Method . . . . . . . . . . . . . . . . . . . . . . 4-1

5 EXPLODED VIEW AND PARTS LIST. . . . . . . . .5-1

5-1 EXPLODED VIEW . . . . . . . . . . . . . . . . . . . . . . . . . . 5-1

5-2 REPLACEMENT PARTS LIST. . . . . . . . . . . . . . . . . 5-2

5-2-1 Mechanical Parts List . . . . . . . . . . . . . . . . . . . . . 5-2

5-2-2 Electrical Parts List . . . . . . . . . . . . . . . . . . . . . . . 5-3

CAUTION FOR SAFETY IN PERFORMING REPAIR

1-1 LASER BEAM SAFETY PRECAUTIONS

This DVD player uses a pickup that emits a laser beam.

Do not look directly at the laser beam coming from the pickup or allow it to strike against your skin.

The laser beam is emitted from the location shown in the figure. When checking the laser diode, be sure to keep your eyes at least 30cm away from the pickup lens when the diode is turned on. Do not look directly at the laser beam.

Caution: Use of controls and adjustments, or doing procedures other than those specified herein, may result in hazardous radiation exposure.

Drive Mecha Assembly

Laser Beam Radiation

Laser Pickup

Turntable

CAUTION

LASER RADIATION

WHEN OPEN. DO NOT

STARE INTO BEAM.

Location: Inside Top of DVD mechanism.

1-1

1-2 IMPORTANT SAFETY PRECAUTIONS

1-2-1 Product Safety Notice

Some electrical and mechanical parts have special safety-related characteristics which are often not evident from visual inspection, nor can the protection they give necessarily be obtained by replacing them with components rated for higher voltage, wattage, etc. Parts that have special safety characteristics are identified by a # on schematics and in parts lists. Use of a substitute replacement that does not have the same safety characteristics as the recommended replacement part might create shock, fire, and/or other hazards. The Product’s Safety is under review continuously and new instructions are issued whenever appropriate. Prior to shipment from the factory, our products are carefully inspected to confirm with the recognized product safety and electrical codes of the countries in which they are to be sold. However, in order to maintain such compliance, it is equally important to implement the following precautions when a set is being serviced.

1-2-2 Precautions during Servicing

A. Parts identified by the # symbol are critical for

safety. Replace only with part number specified.

B. In addition to safety, other parts and assemblies

are specified for conformance with regulations applying to spurious radiation. These must also be replaced only with specified replacements. Examples: RF converters, RF cables, noise blocking capacitors, and noise blocking filters, etc.

C. Use specified internal wiring. Note especially:

1)Wires covered with PVC tubing

2)Double insulated wires

3)High voltage leads

D. Use specified insulating materials for hazardous

live parts. Note especially:

1)Insulation tape

2)PVC tubing

3)Spacers

4)Insulators for transistors

E. When replacing AC primary side components

(transformers, power cord, etc.), wrap ends of wires securely about the terminals before soldering.

F. Observe that the wires do not contact heat produc-

ing parts (heatsinks, oxide metal film resistors, fusible resistors, etc.).

G. Check that replaced wires do not contact sharp

edges or pointed parts.

H. When a power cord has been replaced, check that

5 - 6 kg of force in any direction will not loosen it.

I. Also check areas surrounding repaired locations.

J. Be careful that foreign objects (screws, solder

droplets, etc.) do not remain inside the set.

K. Crimp type wire connector

The power transformer uses crimp type connectors which connect the power cord and the primary side of the transformer. When replacing the transformer, follow these steps carefully and precisely to prevent shock hazards. Replacement procedure

1)Remove the old connector by cutting the wires at a point close to the connector.

Important: Do not re-use a connector. (Discard it.)

2)Strip about 15 mm of the insulation from the ends of the wires. If the wires are stranded, twist the strands to avoid frayed conductors.

3)Align the lengths of the wires to be connected. Insert the wires fully into the connector.

4)Use a crimping tool to crimp the metal sleeve at its center. Be sure to crimp fully to the complete closure of the tool.

L. When connecting or disconnecting the internal

connectors, first, disconnect the AC plug from the AC outlet.

1-2

1-2-3 Safety Check after Servicing

Examine the area surrounding the repaired location for damage or deterioration. Observe that screws, parts, and wires have been returned to their original positions. Afterwards, do the following tests and confirm the specified values to verify compliance with safety standards.

1. Clearance Distance

When replacing primary circuit components, confirm specified clearance distance (d) and (d’) between soldered terminals, and between terminals and surrounding metallic parts. (See Fig. 1)

Table 1 : Ratings for selected area

AC Line Voltage Clearance Distance (d) (d’)

Chassis or Secondary Conductor

Primary Circuit Terminals

dd'

120 V

Note: This table is unofficial and for reference only.

Be sure to confirm the precise values.

2. Leakage Current Test

Confirm the specified (or lower) leakage current between B (earth ground, power cord plug prongs) and externally exposed accessible parts (RF terminals, antenna terminals, video and audio input and output terminals, microphone jacks, earphone jacks, etc.) is lower than or equal to the specified value in the table below.

Measuring Method (Power ON) :

Insert load Z between B (earth ground, power cord plug prongs) and exposed accessible parts. Use an AC voltmeter to measure across the terminals of load Z. See Fig. 2 and the following table.

Table 2: Leakage current ratings for selected areas

AC Line Voltage Load Z Leakage Current (i) Earth Ground (B) to:

120 V

≥ 3.2mm (0.126 inches)

0.15µF CAP. & 1.5kΩ RES.

Connected in parallel

Exposed Accessible Part

1.5k

i≤0.5mA Peak Exposed accessible parts

0.15 F

Earth Ground

Power Cord Plug Prongs

AC Voltmeter (High Impedance)

Fig. 1

Fig. 2

Note: This table is unofficial and for reference only. Be sure to confirm the precise values.

1-3

1-3 STANDARD NOTES FOR SERVICING

1-3-1 Circuit Board Indications

a. The output pin of the 3 pin Regulator ICs is indi-

cated as shown.

Top View

Input

Out

b. For other ICs, pin 1 and every fifth pin are indicated

as shown.

Pin 1

c. The 1st pin of every male connector is indicated as

shown.

Pin 1

Bottom View

1-3-3 How to Remove / Install Flat

Pack-IC

1. Removal

With Hot-Air Flat Pack-IC Desoldering Machine:.

(1) Prepare the hot-air flat pack-IC desoldering

machine, then apply hot air to the Flat Pack-IC (about 5 to 6 seconds). (Fig. S-1-1)

Fig. S-1-1

(2) Remove the flat pack-IC with tweezers while apply-

ing the hot air.

(3) Bottom of the flat pack-IC is fixed with glue to the

CBA; when removing entire flat pack-IC, first apply soldering iron to center of the flat pack-IC and heat up. Then remove (glue will be melted). (Fig. S-1-6)

(1) Release the flat pack-IC from the CBA using twee-

zers. (Fig. S-1-6)

1-3-2 Instructions for Connectors

1. When you connect or disconnect the FFC (Flexible Foil Connector) cable, be sure to first disconnect the AC cord.

2. FFC (Flexible Foil Connector) cable should be inserted parallel into the connector, not at an angle.

FFC Cable

Connector

CBA

* Be careful to avoid a short circuit.

Caution:

1. Do not supply hot air to the chip parts around the flat pack-IC for over 6 seconds because damage to the chip parts may occur. Put masking tape around the flat pack-IC to protect other parts from damage. (Fig. S-1-2)

2. The flat pack-IC on the CBA is affixed with glue, so be careful not to break or damage the foil of each pin or the solder lands under the IC when removing it.

Hot-air Flat Pack-IC Desoldering

CBA

Masking Tape

Tweezers

Machine

Flat Pack-IC

Fig. S-1-2

1-4

With Soldering Iron:

(1) Using desoldering braid, remove the solder from all

pins of the flat pack-IC. When you use solder flux which is applied to all pins of the flat pack-IC, you can remove it easily. (Fig. S-1-3)

Flat Pack-IC

Desoldering Braid

(4) Bottom of the flat pack-IC is fixed with glue to the

CBA; when removing entire flat pack-IC, first apply soldering iron to center of the flat pack-IC and heat up. Then remove (glue will be melted). (Fig. S-1-6)

(5) Release the flat pack-IC from the CBA using twee-

zers. (Fig. S-1-6)

Note:

When using a soldering iron, care must be taken to ensure that the flat pack-IC is not being held by glue. When the flat pack-IC is removed from the CBA, handle it gently because it may be damaged if force is applied.

Soldering Iron

Fig. S-1-3

(2) Lift each lead of the flat pack-IC upward one by

one, using a sharp pin or wire to which solder will not adhere (iron wire). When heating the pins, use a fine tip soldering iron or a hot air desoldering machine. (Fig. S-1-4)

Sharp Pin

Fine Tip Soldering Iron

Fig. S-1-4

(3) Bottom of the flat pack-IC is fixed with glue to the

CBA; when removing entire flat pack-IC, first apply soldering iron to center of the flat pack-IC and heat up. Then remove (glue will be melted). (Fig. S-1-6)

(4) Release the flat pack-IC from the CBA using twee-

zers. (Fig. S-1-6)

With Iron Wire:

(1) Using desoldering braid, remove the solder from all

pins of the flat pack-IC. When you use solder flux which is applied to all pins of the flat pack-IC, you can remove it easily. (Fig. S-1-3)

(2) Affix the wire to a workbench or solid mounting

point, as shown in Fig. S-1-5.

(3) While heating the pins using a fine tip soldering

iron or hot air blower, pull up the wire as the solder melts so as to lift the IC leads from the CBA contact pads as shown in Fig. S-1-5

To Solid Mounting Point

CBA

Tweezers

Hot Air Blower

Iron Wire

Soldering Iron

Fig. S-1-5

Fine Tip Soldering Iron

Flat Pack-IC

Fig. S-1-6

1-5

2. Installation

(1) Using desoldering braid, remove the solder from

the foil of each pin of the flat pack-IC on the CBA so you can install a replacement flat pack-IC more easily.

(2) The “I” mark on the flat pack-IC indicates pin 1.

(See Fig. S-1-7.) Be sure this mark matches the 1 on the PCB when positioning for installation. Then presolder the four corners of the flat pack-IC. (See Fig. S-1-8.)

(3) Solder all pins of the flat pack-IC. Be sure that none

of the pins have solder bridges.

Example :

Pin 1 of the Flat Pack-IC is indicated by a " " mark.

Fig. S-1-7

1-3-4 Instructions for Handling

Semi-conductors

Electrostatic breakdown of the semi-conductors may occur due to a potential difference caused by electrostatic charge during unpacking or repair work.

1. Ground for Human Body

Be sure to wear a grounding band (1MΩ) that is properly grounded to remove any static electricity that may be charged on the body.

2. Ground for Workbench

(4) Be sure to place a conductive sheet or copper plate

with proper grounding (1MΩ) on the workbench or other surface, where the semi-conductors are to be placed. Because the static electricity charge on clothing will not escape through the body grounding band, be careful to avoid contacting semi-conductors with your clothing.

< Incorrect >

CBA

Presolder

Flat Pack-IC

Fig. S-1-8

CBA

< Correct >

Grounding Band

1MΩ

CBA

1MΩ

Conductive Sheet or Copper Plate

1-6

GENERAL INFORMATION2

2-1 SPECIFICATIONS

2-1

2-2 COMPARISON OF MODELS

O A

←: Same as on left

ITEM

Dimensional 435(W) x 55(H) x 211(D) mm 435(W) x 75(H) x 216(D) mm Weight 1.8 kg 2.1 kg Tray Panel Clear Silver

Color Front / Button

PPEARANC

Hot Stamp ---

Ultra Vision Badge --Drive Speed 1x ←

Laser 2 ← DVD/VCD/SVCD/CD-DA O / --- / --- / O ← CD-R/CD-RW/DVD-R (Video Format) O / O / O ← DVD-RAM (VR Format) --- ← MP3 O ---

ENERA

OSD languages 3 (English, French, Spanish) ← Jog Shuttle on Front --- Only switch shuttle

Headphone Jack / Volume --- / --PAL Disc NTSC Out --- O

Video Out Mode NTSC/PAL/PAL60 O / --- / --- ← S-Video / Component / Composite O / O / O ← Video D/A Converter 10bit ←

IDE

Black Level Select O ← Picture Control --- ←

Progressive Out Audio D/A Converter 192kHz / 24bit ←

Digital Audio Out Optical / Coaxial --- / O O / O Dolby Digital 5.1 ch Decode --- ← DTS Digital Out --- O

Virtual Surround O

UDI

Dynamic Range Compression (Dolby Digital)

DVD Audio --- ← Power on sound --- ←

Search Speed Slow Speed 1/16, 1/8, 1/2 (FORWARD/REWIND) 1/16, 1/8, 1/2 (FORWARD only)

IP Search (Smooth 2x Play) O ← 2x Play with Audio --- ←

RICK PLA

Step Forward / Reverse O / O O / --Still Picture Select (Frame/Field) Auto Only ←

DV-P735U/P735U(C)/P533U DV-P725U/P325U/P323U

Silver/Silver (DV-P735U/P735U(C))

Black/Silver (DV-P533U)

O (DV-P735U/P735U(C))

--- (DV-P533U)

O ←

2 to 100 (FORWARD/REWIND)

(DVD: 2, 8, 50, 100/CD: 16)

Dark Silver/Silver (DV-P725U)

Black/Silver (DV -P32 5U)

Silver/Silver (DV-P323U)

O (DV-P725U)

--- (DV-P325U/P323U) O (DV-P725U)

--- (DV-P325U/P323U)

O / O (DV-P725U)

--- / --- (DV-P325U/P323U)

O (DV-P725U)

--- (DV-P325U/P323U)

O (DV-P725U/P325U)

--- (DV-P323U)

2 to 60 (FORWARD/REWIND)

(DVD: 2, 8, 30, 60/CD: 16)

2-2

ITEM

Disc Navigation

DVD Zoom x2 / x4 / x16 O / O / --- ←

Program and Random Play of DVD / VCD

A-B Repeat O ← Repeat O ← Last Play O ←

FEATURES

Closed Caption for NTSC DVD O ← Front Panel Display Dimmer O ← Screen Saver O ← Auto Power Off O ←

Jog Shuttle on Remote --- ←

DV-P735U/P735U(C)/P533U DV-P725U/P325U/P323U

O (DV-P735U/P735U(C))

--- (DV-P533U)

--- ←

---

REMOTE

TV Control

CONTROLLER

O (DV-P735U/P735U(C))

--- (DV-P533U)

2-3

2-3 OPERATING CONTROLS AND FUNCTIONS

[ DV-P735U/P735(C) ]

FRONT PANEL

y/I POWER/ STANDBY

H/E

SKIP/FR

1 6

D/G

FF/SKIP

PLAY

STOP

OPEN/CLOSE

REAR VIEW

ANALOG AUDIO OUT DIGTAL AUDIO OUT

COAXIAL

1. y/I (POWER/STANDBY)

to switch the player to ON or OFF (As to the indication of the Operate switch, “I” indicates ON and “y” indicates electrical power STANDBY)

2. SKIP/FR

goes to previous chapter or track during playback; press and hold for 1.5 seconds for a reverse search

3. PLAY

to start or resume disc playback

4. FF/SKIP

goes to next chapter or track during playback; press and hold for 1.5 seconds for a forward search

5. STOP

to stop playback

6. OPEN/CLOSE

to open/close the disc tray

7. Disc tray

8. Display

CR/PR

VIDEO

RCB/PB

OUT

13 151211910 14

COMPONENT

VIDEO OUT

S-VIDEO

OUT

I P

PROGRESSIVE

82 3 4 5

9. MAIN (AC Power Cord)

connect to a standard AC outlet

10. COAXIAL (Digital audio out)

connect to AUDIO inputs of a digital (coaxial) audio equipment

11. AUDIO OUT (Left/Right)

connect to AUDIO inputs of an amplifier, receiver or stereo system

12. VIDEO OUT

connect to the Video Input of a TV.

13. COMPONENT VIDEO OUT

connect to a TV with Component video in jacks.

14. S-VIDEO OUT

connect to a TV with S-Video inputs

15. INTERLACE/PROGRESSIVE SCAN SELECTOR

to select interlace or progressive scanning

Caution: Do not touch the inner pins of the jacks on the rear panel. Electrostatic discharge may cause permanent damage to the player.

2-4

REMOTE CONTROL

SURROUND

A-B REPEAT

5 6

7 8 9

REPEAT

MODE

ZOOM

ANGLE

CLEAR

SUBTITLE

ENTER

12 13

RETURN

NAVIGATION

SKIP

14 15

STOP

PAUSE/STEP

TV POWER

VIDEO/TV

MODE

AUDIO

DISC

PLAY

VOL

OPEN CLOSE

+10

DISPLAY

TOP MENU

SETUP

22 21

1. SURROUND

Press to activate the virtual sound.

(POWER/STANDBY)

Press to turn the power on and off. (As to the indication of the Operate switch, "I" shows ON and "

/I" shows electrical power stand-by.)

3. A-B REPEAT

Repeats playback of a selected section.

4. REPEAT

Repeats playback of the current disc, title, chapter or track.

5. MODE

Activates program playback or random playback mode when playing CDs or MP3. Sets Black level and virtual surround.

6. ZOOM

Enlarges part of a DVD-reproduced image.

7. CLEAR

Press to reset the setting.

8. ANGLE

Press to change the camera angle to see the sequence being played back from a different angle.

9. SUBTITLE

Press to select the desired subtitle language.

10. MENU

Press to display the menu of the Disc.

11. Arrow Buttons (

ss B

ppo

)

Move the cursor and determines its position.

12. ENTER

Press to accept a setting.

13. RETURN

Returns to the previous operation.

14. SKIP

Press to skip Chapters or Tracks.

15. STOP

Press to stop the disc motion.

16.

Press to view the DVD picture in fast reverse motion or to (reverse playback of an Audio CD.

17. TV POWER

To exclusively turn ON/OFF the TV.

18. VIDEO/TV

Press to select the external input mode or TV mode of the TV.

19. TV VOL ( / )

Press to exclusively control the TV volume.

20. TV CH

Press to exclusively control the TV channels.

21. PAUSE/STEP

Press to pause Disc playback. Press repeatedly to advance the DVD picture step by step (or one frame at a time).

22.

Press to fast forward the Disc. Press PAUSE/STEP, then press this button to begin slow motion playback. Press this button repeatedly to change the forward speed of slow motion.

23. PLAY

Press to begin playback.

24. DISC NAVIGATION

Press to enter the setup mode.

25. SETUP

Press to display the first scenes of each chapter of the title being played.

26. TOP MENU

Press to call up the title menu.

27. DISPLAY

Press to access or remove the display screen during DVD or Audio CD playback.

28. AUDIO

Press to select a desired audio language or sound mode.

29. Numerical Buttons

Press to directly select a Track (Audio CD) for playback.

30. OPEN/CLOSE

Press to open or close the disc loading tray.

31. SEARCH MODE

Press to access or remove the Search display, which allows you to go directly to a specific

Title/Chapter/Track/Time

2-5

Display

Stays on when the repeat function is on.

Stays on when the A-B repeat function is on.

Stays on when repeat title function is on.

Stays on when repeat chapter function is on.

Stays on when repeat track function is on.

Lights up when a DVD is inserted into the tray.

Lights up when a CD is inserted into the tray.

Stays on when the inserted disc is being played back.

Displays During Operation

Power on

No disc inserted/can not read

Tray open

Tray closed

Loading the Disc

Power off

When a disc is being Play back

Lights up when the inserted disc comes to a pause.

Displays how long a current title or track has been played back. When a chapter or track has switched, the number of a new title, chapter or track is displayed.

2-6

[ DV-P533U ]

KLL