Panasonic DMR-EH75VP User manual

©2006 Matsushita Electric Industrial Co., Ltd. All
rights reserved. Unauthorized copying and
distribution is a violation of law.
DMR-EH75VP
Vol. 1
Colour
(S).......................Silver Type
DVD Recorder
ORDER NO.VR0603007CE
B24

1 Safety Precaution 4
1.1. General guidelines 4
1.2. Caution for fuse replacement 4
2 Warning 5
2.1. Prevention of Electrostatic Discharge (ESD) to
Electrostatic Sensitive (ES) Devices 5
2.2. Precaution of Laser Diode 6
2.3. Service caution based on legal restrictions 7
2.4. How to replace the Lithium Battery 7
3 Service Navigation 8
3.1. Service Information 8
4 Specifications 9
5 Features 10
5.1. About DivX 10
5.2. HDAVI Control (HDMI Link) 15
6 Location of Controls and Components 18
6.1. Each Buttons 18
7 Operation Instructions 20
7.1. (DVD) Taking out the Disc from RAM-Drive Unit when the
Disc cannot be ejected by OPEN/CLOSE button 20
7.2. (VHS) Removing Cassette Tape manually 21
8 Service Mode 23
8.1. (DVD) Self-Diagnosis and Special Mode Setting 23
8.2. (VHS) Self-Diagnosis and Special Mode Setting 32
9 Service Fixture & Tools 38
10 Assembling and Disassembling 39
10.1. Disassembly Flow Chart 39
10.2. P.C.B. Positions 40
10.3. Caution with inserting cassette tape when disassembling
the unit 41
10.4. Top Case 42
10.5. Front Panel 42
10.6. Front (L) P.C.B. & Front (R) P.C.B. 43
10.7. RAM / Digital P.C.B. Module 43
10.8. HDD 45
10.9. VTR Mechanism Unit 46
10.10. SD Card/DV Jack P.C.B. 47
10.11. Rear Panel & Fan Motor 47
10.12. HDMI P.C.B. 47
10.13. Power & Digital I/F P.C.B. 48
10.14. Main P.C.B. 48
11 Measurements and Adjustments 49
11.1. Service Positions 49
11.2. Caution for Replacing Parts 54
11.3. Standard Inspection Specifications after Making Repairs
58
12 Block Diagram 59
12.1. Power Supply Block Diagram 59
12.2. Analog Video Block Diagram 61
12.3. Analog Audio Block Diagram 63
12.4. Analog Timer Block Diagram 64
12.5. System Control & Servo Block Diagram 65
12.6. HDMI Block Diagram 66
13 Schematic Diagram 67
13.1. Interconnection Schematic Diagram 67
13.2. Power Supply (1/4) Section (Power & Digital I/F
P.C.B.(1/2)) Schematic Diagram (P) 69
13.3. Power Supply (2/4) Section (Power & Digital I/F
P.C.B.(1/2)) Schematic Diagram (P) 70
13.4. Power Supply (3/4) Section (Power & Digital I/F
P.C.B.(1/2)) Schematic Diagram (P) 71
13.5. Power Supply (4/4) Section (Power & Digital I/F
P.C.B.(1/2)) Schematic Diagram (P) 72
13.6. Digital I/F (1/4) Section (Power & Digital I/F P.C.B.(2/2))
Schematic Diagram (IF) 74
13.7. Digital I/F (2/4) Section (Power & Digital I/F P.C.B.(2/2))
Schematic Diagram (IF) 75
13.8. Digital I/F (3/4) Section (Power & Digital I/F P.C.B.(2/2))
Schematic Diagram (IF) 76
13.9. Digital I/F (4/4) Section (Power & Digital I/F P.C.B.(2/2))
Schematic Diagram (IF) 77
13.10. Video Section (Main P.C.B.(1/4)) Schematic Diagram
Schematic Diagram (V) 78
13.11. VHS Audio Section (Main P.C.B.(2/4)) Schematic Diagram
(A) 79
13.12. Syscon/Servo/Timer (1/4) Section (Main P.C.B.(3/4))
Schematic Diagram (S) 80
13.13. Syscon/Servo/Timer (2/4) Section (Main P.C.B.(3/4))
Schematic Diagram (S) 81
13.14. Syscon/Servo/Timer (3/4) Section (Main P.C.B.(3/4))
Schematic Diagram (S) 82
13.15. Syscon/Servo/Timer (4/4) Section (Main P.C.B.(3/4))
Schematic Diagram (S) 83
13.16. I/O Tuner Section (1/4) (Main P.C.B.(4/4)) Schematic
Diagram (I) 85
13.17. I/O Tuner Section (2/4) (Main P.C.B.(4/4)) Schematic
Diagram (I) 86
13.18. I/O Tuner Section (3/4) (Main P.C.B.(4/4)) Schematic
Diagram (I) 87
13.19. I/O Tuner Section (4/4) (Main P.C.B.(4/4)) Schematic
Diagram (I) 88
13.20. HDMI Schematic Diagram 90
13.21. SD Card/DV Jack Schematic Diagram 92
CONTENTS
Page Page
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13.22. Front (R) Schematic Diagram 93
13.23. Front Jack Schematic Diagram 94
14 Printed Circuit Board 95
14.1. Power & Digital I/F P.C.B. 95
14.2. Main P.C.B. 97
14.3. HDMI P.C.B. 102
14.4. SD Card/DV Jack P.C.B. 103
14.5. Front (L) Jack P.C.B., Front (R) P.C.B. 104
15 Appendix for Schematic Diagram 105
15.1. Voltage and Waveform Chart 105
16 Miscellaneous 113
16.1. Abbreviations 113
17 Parts and Exploded Views 119
17.1. Exploded Views 119
17.2. Replacement Parts List 123
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1.1.1. Leakage current cold check
1.Unplug the AC cord and connect a jumper between the two
prongs on the plug.
2.Measure the resistance value, with an ohmmeter, between
the jumpered AC plug and each exposed metallic cabinet
part on the equipment such as screwheads, connectors,
control shafts, etc. When the exposed metallic part has a
return path to the chassis, the reading should be between
1MWand 5.2MW.
When the exposed metal does not have a return path to the
chassis, the reading must be .
Figure 1
1.1.2. Leakage current hot check
(See Figure 1 .)
1.Plug the AC cord directly into the AC outlet. Do not use an
isolation transformer for this check.
2.Connect a 1.5kW, 10 watts resistor, in parallel with a 0.15µF
capacitors, between each exposed metallic part on the set
and a good earth ground such as a water pipe, as shown in
Figure 1.
3.Use an AC voltmeter, with 1000 ohms/volt or more
sensitivity, to measure the potential across the resistor.
4.Check each exposed metallic part, and measure the
voltage at each point.
5.Reverse the AC plug in the AC outlet and repeat each of the
above measurements.
6.The potential at any point should not exceed 0.75 volts
RMS. A leakage current tester (Simpson Model 229 or
equivalent) may be used to make the hot checks, leakage
current must not exceed 1/2 milliampere. In case a
measurement is outside of the limits specified, there is a
possibility of a shock hazard, and the equipment should be
repaired and rechecked before it is returned to the
customer.
1 Safety Precaution
1.1. General guidelines
1.When servicing, observe the original lead dress. If a short circuit is found, replace all parts which have been overheated or
damaged by the short circuit.
2.After servicing, see to it that all the protective devices such as insulation barriers, insulation papers shields are properly
installed.
3.After servicing, make the following leakage current checks to prevent the customer from being exposed to shock hazards.
1.2. Caution for fuse replacement
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2 Warning
2.1. Prevention of Electrostatic Discharge (ESD) to Electrostatic Sensitive
(ES) Devices
Some semiconductor (solid state) devices can be damaged easily by static electricity. Such components commonly are called
Electrostatic Sensitive (ES) Devices. Examples of typical ES devices are integrated circuits and some field-effect transistor-sand
semiconductor "chip" components. The following techniques should be used to help reduce the incidence of component damage
caused by electrostatic discharge (ESD).
1.Immediately before handling any semiconductor component or semiconductor-equipped assembly, drain off any ESD on your
body by touching a known earth ground. Alternatively, obtain and wear a commercially available discharging ESD wrist strap,
which should be removed for potential shock reasons prior to applying power to the unit under test.
2.After removing an electrical assembly equipped with ES devices, place the assembly on a conductive surface such as
aluminum foil, to prevent electrostatic charge buildup or exposure of the assembly.
3.Use only a grounded-tip soldering iron to solder or unsolder ES devices.
4.Use only an anti-static solder removal device. Some solder removal devices not classified as "anti-static (ESD protected)" can
generate electrical charge sufficient to damage ES devices.
5.Do not use freon-propelled chemicals. These can generate electrical charges sufficient to damage ES devices.
6.Do not remove a replacement ES device from its protective package until immediately before you are ready to install it. (Most
replacement ES devices are packaged with leads electrically shorted together by conductive foam, aluminum foil or comparable
conductive material).
7.Immediately before removing the protective material from the leads of a replacement ES device, touch the protective material
to the chassis or circuit assembly into which the device will be installed.
Caution
Be sure no power is applied to the chassis or circuit, and observe all other safety precautions.
8.Minimize bodily motions when handling unpackaged replacement ES devices. (Otherwise hamless motion such as the brushing
together of your clothes fabric or the lifting of your foot from a carpeted floor can generate static electricity sufficient to damage
an ES device).
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2.2. Precaution of Laser Diode
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2.3. Service caution based on legal restrictions
2.3.1. General description about Lead Free Solder (PbF)
The lead free solder has been used in the mounting process of all electrical components on the printed circuit boards used for this
equipment in considering the globally environmental conservation.
The normal solder is the alloy of tin (Sn) and lead (Pb). On the other hand, the lead free solder is the alloy mainly consists of tin
(Sn), silver (Ag) and Copper (Cu), and the melting point of the lead free solder is higher approx.30 degrees C (86°F) more than that
of the normal solder.
Definition of PCB Lead Free Solder being used
The letter of “PbF” is printed either foil side or components side on the PCB using the lead free solder.
(See right figure)
Service caution for repair work using Lead Free Solder (PbF)
· The lead free solder has to be used when repairing the equipment for which the lead free solder is used.
(Definition: The letter of “PbF” is printed on the PCB using the lead free solder.)
· To put lead free solder, it should be well molten and mixed with the original lead free solder.
· Remove the remaining lead free solder on the PCB cleanly for soldering of the new IC.
· Since the melting point of the lead free solder is higher than that of the normal lead solder, it takes the longer time to melt
the lead free solder.
· Use the soldering iron (more than 70W) equipped with the temperature control after setting the temperature at 350±30
degrees C (662±86°F).
Recommended Lead Free Solder (Service Parts Route.)
· The following 3 types of lead free solder are available through the service parts route.
RFKZ03D01K-----------(0.3mm 100g Reel)
RFKZ06D01K-----------(0.6mm 100g Reel)
RFKZ10D01K-----------(1.0mm 100g Reel)
Note
* Ingredient: tin (Sn), 96.5%, silver (Ag) 3.0%, Copper (Cu) 0.5%, Cobalt (Co) / Germanium (Ge) 0.1 to 0.3%
2.4. How to replace the Lithium Battery
REPLACEMENT PROCEDURE
1.Remove the Top case, VHS Mechanism, HDD Angle, Main P.C.B. and Battery Cover by referring the Disassembling
Procedure.
2.Unsolder the Lithium Batteries: B7501 and then replace it into new one.
( As shown in 14.2.1. The Main P.C.B. )
NOTE:
The lithium battery is a critical component. ( Type No.: CR2354-1GUF Manufactured by Panasonic. )
It must never be subjected to excessive heat or discharge.
It must therefore only be fitted in equipment designed specifically for its use.
Replacement batteries must be of the same type and manufacture.
They must be fitted in the same manner and location as the original battery, with the correct polarity contacts observed.
Do not attempt to re-charge the old battery or re-use it for any other purpose.
It should be disposed of in waste products destined for burial rather than incineration.
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3 Service Navigation
3.1. Service Information
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4 Specifications
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5.1.2. Operating Instructions about DivX
Video-on-Demand Content
DivX Video-on-Demand (VOD) content is encrypted for
copyright protection. In order to play DivX VOD content on this
unit, you first need to register the unit.
Follow the on line instructions for purchasing DivX VOD content
to enter unit´s registration code and register unit. Visit
www.divx.com/vod for more information.
Display unit´s registration code.
5 Features
5.1. About DivX
5.1.1. General
DivX is a new video compressing format that is applied MPEG4 technology to improve image quality and the compressibility, and
it is developed by the DivXNetworks, Inc., Video file of high resolution and the high picture quality can be made though it is a high
compressibility.
DivX codec is necessary for converting video to DivX file and .playback files made.
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5.1.3. About DivX DRM
Divx file includes file to which DRM(Digital Right Management) is applied and file not applied.
This item is a content that relates only in treating file to which DRM is applied.
1.Registration Code display function
2.User´s registration and approval function
3.Rental management function
1) Registration Code display function
Registration Code is alphanumeric character sequence 8bytes inputted as recorder information, in case a use purchases or rent
a DivX DRM file in a network.
Registration code is a character sequence generated at random, and differs in each recorder.
Moreover, Registration code is updated by new user authentication ever if same recorder.
2) User´s registration and approval function
· Only one user can register for one recorder. If user´s registration is not done with the recorder, DivX file cannot be played
back.
· User´s registration is performed only when a DivX DRM file is first chosen by recorder
· DivX DRM file that can perform user´s registration is only a file that is registered Registration Code and purchased or rented.
· User authentication is performed whenever DivX DRM file is played back.
Error message is displayed when failing in user´s registration and approval.
3) Rental management function
There are purchase file without registration of number of playback and rental files with registration of number of playback as
Divx file. Number of playback of rental file is counted by the recorder.
When rental file is played, remaining number of times that can be played back will be shown to users, recorder requests users
to input yes or no.
Following specifications have been installed for the rental files in the purpose to clarify the count condition of number of times
of playback.
· Conditions on counting number of times of play.
1.When a file was opened successfully. (At the time of playback start)
2.When you have done review operation from the start. (Skip to file head)
-
- -
- At this time, remaining number of times that can be played back and confirmation message [Do you play really?] are
displayed.
-
- -
- When the playback point has been skipped to the top of title, number of playback is not counted if the top of title was
not recognized.
-
- -
- Even if the power failure occurs after start of playback of rental file, number of times of playback counted at start of
the playback is held as it is. (Though playback stops by power failure, the number of times of playback is not
counted.)
When it has reached head of title, the playback is ended, and screen becomes DivX menu (There is no resume) and then
cursor is located on title that has been played back.
Then if the same file was continuously played back, it begins to playback from the file head.
Note:
Above mentioned stored user information and number of times of playback are not erased by update of firmware or by
initialization by test mode.
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5.2. HDAVI Control (HDMI Link)
Linked operations by HDAVI Control (HDMI Link)
5.2.1. What is HDMI
HDMI is abbreviation of [High-Definition Multimedia Interface],
and is digital interface standard for next generation TV
corresponding to follows.
1.Non-compressing high quality digital image
2.Digital transmission of multi channel digital audio.
3. Two way communication of control signal of control
straightening between equipments
Pin Name
Pin layout of plug of HDMI cable seen from outside.
5.2.2. Link functions with Equipments
Corresponding Table
Functions
(1) Automatic Input switch
(2) Link of Power
In case setting of [FUNCTIONS] ®[Setup] ®[TV Screen] ®
[Functions of HDMI] ®[Control with HDMI] are on, all above
equipments Link functions are effective.
5.2.3. Outline of Equipments Linked
functions
(1) Automatic Input switch
At starting of playback/ GUI display by DIGA, it turns on
power of VIErA, and it displays picture of DIGA onto screen
of VIErA.
Starting of playback:
It includes automatic playback of DVD-Video and so on.
And it includes picture of screen saver too.
GUI display:
FUNCTIONS, DIRECT NAVIGATOR, TV PROGRAM,
PROG/CHECK, Timer Recording, G-code, Initial setting,
Playback setting, Play list, SD/DVD guide, Warning
messages that user can select and so on.
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(2) Seamless GUI
1.Automatic switching to DIGA functions from VIErA
functions
When [operate DIGA] of VIErA functions is selected,
input of VIErA is switched to DIGA input automatically
and it displays DIGA functions.
2.Automatic switching to VIErA operation menu from
DIGA operation menu
It is function that DIGA operation menu is switched off
and VIErA operation menu is switched on when
[RETURN] button of VIErA remote controller is pressed
while first stage of DIGA operation menu is being
displayed,
3.Automatic switch off of GUI display of DIGA when
VIErA input selection/ VIErA operation menu is
displayed
GUI of DIGA is turned off when VIErA input selection is
performed while GUI of DIGA is being displayed.And
GUI of DIGA is turned off and VIErA operation menu is
displayed when VIErA operation menu is displayed
while GUI of DIGA is being displayed.
GUI Display:
Erasable GUI displays above are limited to screen that
are erasable by RETURN button in DIRECT
NAVIGATOR/ TV GUIDE/ FUNCTIONS/ PROGRAM
CHECK/ INITIAL SETTING.
However GUI displays that are not erasable by
RETURN button in FORMAT process/ ERASE process/
DUBBING process/ FINALIZE process/ CUTION
displayed are kept displaying.
(3) Remote Control Operation
Function that operate DIGA by VIErA remote controller
when DIGA screen is displayed on VIErA,
· Buttons of Remote Controller that can be operate by
VIErA remote controller:
,,,, ENTER, RETURN, SUB MENU
(4) Power Link
Power of DIGA is turned off linking to POWER OFF of
VIErA.
· Power of DIGA is not turned on linking to POWER ON
of VIErA.
· It is limited in following cases that DIGA links to POWER
OFF of VIErA.
1.During EE display (While Timer recording is being
executed/ Functions is being displayed are included.)
2.Case that DIGA is playing back (only North America/
Japan)
However except cases below.
· During EE display, but manual recording is being
executing/ during EXT_Link recording.
· During Tray is being opened.
· Case that DIGA is in status that power cannot turn off
(during dubbing, during finalize).
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(5) Timer Recording (Reservation Recording)
When select [Reserve] of TV GUIDE of VIErA, Reservation
information is transmitted by way of HDMI (HDAVI Control),
and reservation registration of DIGA is done.
· In DIGA, it treats as well as a usual program reservation
and Timer Recording reservation.
· Linking reservation from VIErA is not done.
· Recordable media is fixed to HDD
· Recording mode of digital program is fixed to DR and
recording mode of analog program is fixed to SP mode.
(6) Recording right now
When [REC RIGHT NOW] is selected on GUI of VIErA, CH
that is being seen is recorded by DIGA.And when [STOP
RIGHT NOW] is selected on GUI of VIErA, recording of
DIGA is stopped.
· Function of [recording right now] is based on manual
recording of DIGA. But recordable media is fixed to
HDD.
Recording mode is same as latest mode, similarly to
manual recording.
(7) Link with Amp
In system including DIGA, VIErA, Amplifier or Theater,
when [ONE TOUCH THEATER PLAYBACK] button was
pressed, VIErA POWER ON/ Input switch/ audio mute is set
automatically, and audio sound is output from speaker
connected amp.
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6 Location of Controls and Components
6.1. Each Buttons
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7 Operation Instructions
7.1. (DVD) Taking out the Disc from RAM-Drive Unit when the Disc cannot
be ejected by OPEN/CLOSE button
7.1.1. (DVD) Forcible Disc Eject
7.1.1.1. (DVD) When the power can be turned off.
1.Turn off the power and press [STOP], [CH UP] keys on the front panel simultaneously for 5 seconds.
7.1.1.2. (DVD) When the power can not be turned off.
1.Press [POWER] key on the front panel for over 10 seconds to turn off the power forcibly, and press [STOP] [CH UP] keys on
the front panel simultaneously for 5 seconds.
7.1.2. (DVD) When the Forcible Disc Eject can not be done.
1.Turn off the power and pull out AC cord.
2.Remove the Top Case.
3.Push in SLIDE CAM by Eject Pin(JSJ0484) or minus screw driver (small) to eject tray slightly.
4.Push out Tray by Eject Pin (JZS0484) or minus screw driver (small).
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