Panasonic DMR-EZ47VEB Service Manual

Model No.

Vol. 1

Colours

(K).......................Black Type

(S).......................Silver Type

ORDER NO.DSD0706015CE

DVD Recorder

DMR-EZ47VEB

CONTENTS

Page Page

1 Safety Precaution 4

1.1. General guidelines

2 Warning

2.1. Prevention of Electrostatic Discharge (ESD) to

Electrostatic Sensitive (ES) Devices

2.2. Precaution of Laser Diode

2.3. Service caution based on legal restrictions

3 Service Navigation

3.1. Service Information

4 Specifications

5 Location of Controls and Components

5.1. Each Buttons

6 Operation Instructions

6.1. (DVD) Taking out the Disc from RAM-Drive Unit when the

Disc cannot be ejected by OPEN/CLOSE button

6.2. (VHS) Removing Cassette Tape manually

7 Service Mode

7.1. (DVD) Self-Diagnosis and Special Mode Setting

7.2. (VHS) Self-Diagnosis and Special Mode Setting

8 Service Fixture & Tools

9 Assembling and Disassembling Instructions

9.1. Disassembly Flow Chart

9.2. P.C.B. Positions

9.3. Caution with inserting cassette tape when disassembling

the unit

9.4. Top cover

9.5. Front Panel

9.6. Front Jack P.C.B., FL Drive P.C.B.

9.7. VHS Mechanism Unit

9.8. RAM/Digital P.C.B. Module

9.9. DV Jack P.C.B.

9.10. Rear Panel, Fan Motor

9.11. HDMI P.C.B.

9.12. Dig. Interface P.C.B.

9.13. Backend P.C.B.

9.14. Main P.C.B.

10 Measurements and Adjustments

10.1. Service Positions

10.2. Caution for Replacing Parts

10.3. (DVD) Standard Inspection Specifications after Making

Repairs

11 Block Diagram

11.1. Power Supply Block Diagram

11.2. Main P.C.B. Regulator Block Diagram

11.3. Analog Video (1/2) Block Diagram

11.4. Analog Video (2/2) Block Diagram

11.5. Analog Audio Block Diagram

11.6. D-IF/Timer Block Diagram

11.7. System Control & Servo Block Diagram

11.8. HDMI Block Diagram

12 Schematic Diagram

12.1. Interconnection Schematic Diagram

12.2. Power Supply Section (Dig. Interface P.C.B.(1/2))

Schematic Diagram (P)

12.3. Digital I/F (1/4) Section (Dig. Interface P.C.B.(2/2))

Schematic Diagram (IF)

12.4. Digital I/F (2/4) Section (Dig. Interface P.C.B.(2/2))

Schematic Diagram (IF)

12.5. Digital I/F (3/4) Section (Dig. Interface P.C.B.(2/2))

Schematic Diagram (IF)

12.6. Digital I/F (4/4) Section (Dig. Interface P.C.B.(2/2))

Schematic Diagram (IF)

12.7. Video Section (Main P.C.B.(1/5)) Schematic Diagram (V)

12.8. VHS Audio Section (Main P.C.B.(2/5)) Schematic Diagram

(A)

12.9. Syscon/Servo/Timer (1/4) Section (Main P.C.B.(3/5))

Schematic Diagram (S)

12.10. Syscon/Ser vo/Tim er (2/4) Sectio n (Main P.C.B .(3/5))

Schematic Diagram (S)

12.11. Syscon/Ser vo/Tim er (3/4) Sectio n (Main P.C.B .(3/5))

Schematic Diagram (S)

12.12. Syscon/Ser vo/Tim er (4/4) Sectio n (Main P.C.B .(3/5))

Schematic Diagram (S)

12.13. I/O Section (1/4) (Main P.C.B.(4/5)) Schematic Diagram

(AV)

12.14. I/O Section (2/4) (Main P.C.B.(4/5)) Schematic Diagram

(AV)

12.15. I/O Section (3/4) (Main P.C.B.(4/5)) Schematic Diagram

(AV)

12.16. I/O Section (4/4) (Main P.C.B.(4/5)) Schematic Diagram

(AV)

12.17. Tuner Section (Main P.C.B.(5/5)) Schematic Diagram (TU)

12.18. HDMI Schematic Diagram

12.19. FL Drive Schematic Diagram

12.20. DV Jack Schematic Diagram

12.21. Front Jack Schematic Diagram

13 Printed Circuit Board

13.1. Dig. Interface P.C.B.

13.2. Main P.C.B.

13.3. HDMI P.C.B.

DMR-EZ47VEB

13.4. FL Drive P.C.B. 94

13.5. Front Jack P.C.B.

13.6. DV Jack P.C.B.

14 Appendix for Schematic Diagram

14.1. Voltage and Waveform Chart

14.2. Abbreviations

15 Parts and Exploded Views

15.1. Exploded Views

15.2. Replacement Parts List

106

112

116

DMR-EZ47VEB

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.

1.1.1. 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 1MW and 5.2MW.

When the exposed metal does not have a return path to the chassis, the reading must be

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.

Figure 1

DMR-EZ47VEB

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 harmless 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).

DMR-EZ47VEB

2.2. Precaution of Laser Diode

DMR-EZ47VEB

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%

DMR-EZ47VEB

3 Service Navigation

3.1. Service Information

4 Specifications

DMR-EZ47VEB

5 Location of Controls and Components

5.1. Each Buttons

DMR-EZ47VEB

6 Operation Instructions

6.1. (DVD) Taking out the Disc from RAM-Drive Unit when the Disc cannot be ejected by OPEN/CLOSE button

6.1.1. (DVD) Forcible Disc Eject

6.1.1.1. (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.

6.1.1.2. (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.

6.1.2. (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).

DMR-EZ47VEB

6.2. (VHS) Removing Cassette Tape manually

When the cassette tape could not be uninstalled from an electrical malfunction, there are 2 ways to remove a cassette tape.

6.2.1. (VHS) Removal by compulsory

unloading.

If Service Mode can be activated when the power can not be turned on, this operation is able.

1. Press [STOP] and [EJECT] button simultaneously for more

than 3 seconds to turn the unit in VHS service mode.

2. Press [STOP] and [EJECT] button simultaneously 7 times

to turn the unit in VHS Service Mode “7”.

3. Press [STOP] button in order to unload the mechanism.

(Pay attention to tape slack)

Service Mode Display:

7 ** ** (STOP) ® 7 0L ** (EJECT)

3. Stop unloading just before unloading will be completed as shown below, and then the tape becomes slack as shown below.

4. Rotate the S-Reel by a small minus screwdriver to remove the slack tape as shown below.

6.2.2. (VHS) Removal by manual operation by rotating the Loading Motor with the batteries.

1. Disconnect the AC plug, and remove the Top Panel and the

Front Panel by referring to the Disassembly Procedures.

2. Connect three batteries (1.5V spec.) to the Loading Motor

in series for supplying 4.5V to rotate the Loading Motor as shown below.

5. Then unload again to remove the cassette tape as shown below.

6.2.3. (VHS) Take out Cassette Tapemanually after removing the mechanism

1. Disconnect the AC plug, and remove the Top Panel, Front

Panel and the Mechanism by referring to "9 Assembling

and Disassembling"

2. Remove the Screw and remove the Loading Motor as

shown below.

3. Rotate the Main Cam Gear counter-clockwise until just

before the unloading will be completed as shown below. .

DMR-EZ47VEB

6. Attach Loading Motor and tighten the screw.

7. Set the Position Switch to EJECT POSITION certainly and attach the mechanism to chassis as shown below.

4. Rotate the Capstan Motor clockwise to remove the slack tape as shown below.

5. Rotate the Main Cam Gear counter-clockwise again to remove the cassette-tape as shown below.

DMR-EZ47VEB

7 Service Mode

7.1. (DVD) Self-Diagnosis and Special Mode Setting

7.1.1. (DVD) Self-Diagnosis Functions

Self-Diagnosis Function provides information for errors to service personnel by “Self-Diagnosis Display” when any error has occurred.

U**, H** and F** are stored in memory and held.

You can check latest error code by transmitting [0] [1] of Remote Controller in Service Mode.

Automatic Display on FL will be cancelled when the power is turned off or AC input is turned off during self-diagnosis display is ON.

Error Code Diagnosis contents Description Monitor Display Automatic FL display U30 Remote control code error Display appears when main unit and remote

U59 Abnormal inner temperature

detected

U61 The unit is carrying out its

recovery process.

controller codes are not matched.

Display appears when internal temperature of deck reaches limit temperature. The power is turned off forcibly. For 30 minutes after this, all key entries are disabled. (Fan motor operates at the highest speed for the first 5 minutes. For the remaining 25 minutes, fan motor is also stopped.) The event is saved in memory as well.

No display

“*” is remote controller code of the main unit. Display for 5 seconds.

No display

U59 is displayed for 30 minutes.

No display

U71 HDMI incompatible error

(HDCP incompatible)

U72 HDMI connection error

(communication error)

U73 HDMI connection error

(authentication error)

U80 ST Microprocessor

Communication Error on Timer Bus

U81 ST Microprocessor

Communication Error on UART

Display this error when the equipment (compatible with DVI such as TV, amplifier etc.) connected to the unit by HDMI is incompatible with HDCP. *HDCP=High-bandwidth Digital Content Protection

This error is displayed when there are any communication problems with the unit and the equipments (TV, amplifier etc.) connected to the unit by HDMI. (or when there is a problem with the HDMI cable)

When authentication error occurs while the equipments (TV, amplifier etc.) are connected by HDMI. (or when there is a problem with the HDMI cable)

Display appears when ST Microprocessor Communication Error on Timer Bus occurs.

Display appears when ST Microprocessor Communication Error on DART occurs.

No display

U72 display disappears when error has been solved by Power OFF/ON of connecting equipment or by inserting/removing of HDMI cable.

No display

U73 display disappears when error has been solved by Power OFF/ON of connecting equipment or by inserting/removing of HDMI cable.

No display

U80 is displayed till Power Key is pressed.

No display

U81 is displayed till Power Key is pressed.

Error Code Diagnosis contents Description Monitor Display Automatic FL display U88 The unit is carrying out its

No display

recovery process.

DMR-EZ47VEB

U99 Hang-up Displayed when communication error has

occurred between Main microprocessor and Timer microprocessor.

H19 Inoperative fan motor When inoperative fan motor is detected after

powered on, the power is turned off automatically. The event is saved in memory.

F00 No error information Initial setting for error code in memory

(Error code Initialization is possible with error code initialization and main unit initialization.)

F58 Drive hardware error When drive unit error is detected, the event is

saved in memory.

F60 DVD module has not been

started.

Defect of Digital P.C.B., defect of regurator circuit for Digital P.C.B. and so on. Mode: No change

F34 Initialization error when main

microprocessor is started up for program recording

When initialization error is detected after starting up main microprocessor for program recording, the power is turned off automatically. The event is saved in memory.

F74 HDIM Device Key

Communication error.

HDMI connection could not be authenticated due to a transfer malfunction. Factor of HDMI Device key-road failure

· When HDMI LSI is damaged.

· ·

· When the bus line of I2C doesn´t operate

· ·

normally.

· When device key information recorded is

· ·

damaged.

F75 HDIM Device Key Information

error

HDMI connection could not be authenticated due to an internal data malfunction. Factor of HDMI Device key-road failure

· When HDMI LSI is damaged.

· ·

· When the bus line of I2C doesn´t operate

· ·

normally.

· When device key information recorded is

· ·

damaged.

UNSUPPORTUnsupported disc error *An unsupported format disc was played,

although the drive starts normally. *The data format is not supported, although the media type is supported. *Exceptionally in case of the disc is dirty.

No display

Displayed is left until the [POWER] key is pressed.

No display No display

No display

No display No display

No display

“This disc is incompatible.”

NO READ Disc read error *A disc is flawed or dirty.

*A poor quality failed to start. *The track information could not be read.

HARD

Drive error The drive detected a hard error. “DVD drive error.” Display for 5 seconds.

ERR

SELF CHECK

Restoration operation Since the power cord fell out during a power

failure or operation, it is under restoration operation. *It will OK, if a display disappears automatically. If a display does not disappear, there is the possibility that defective Digital P.C.B. / RAM drive.

Display for 5 seconds.

“Cannot read. Please check the disc.”

No display

DMR-EZ47VEB

Error Code Diagnosis contents Description Monitor Display Automatic FL display PLEASE

WAIT

UNFORMATUnformatted disc error You have inserted an unformatted DVD-RAM

Unit is in termination process Unit is in termination process now.

“BYE” is displayed and power will be turned off. In case “Quick Start” of setup menu is ON, it is displayed in restoration operation for AC off.

or DVD-RW that is unformatted or recorded on other equipment.

No display

IR ERR IR communication error [IR ERR] is displayed when communication

between Timer microprocessor and IR microprocessor fails.

No REC Recording is impossible [No REC] is displayed when recording is

impossible due to the defect, dirt or wound of media.

No display

7.1.2. (DVD) Special Modes Setting

Item FL display Key operation

Mode name Description Front Key

TEST Mode *All the main unit´s parameters (include tuner)

are initialized.

Rating password The audiovisual level setting password is

initialized to “Level 8”.

Service Mode Setting every kind of modes for servicing.

*Details are described in “7.1.3. (DVD) Service Mode at a glance”.

Forced disc eject Removing a disc that cannot be ejected.

The tray will open and unit will shift to P-off mode. *When Timer REC is ON or EXT-LINK is ON, execute " Forced disc eject " after releasing Timer REC or EXT-LINK. *This command is not effective during "Child lock" is ON. While Demonstration Lock is being set, this Forced disc eject function is not accepted.

The display before execution leaves.

Press [VHS to DVD COPYING], [REC] and [OPEN/CLOSE] keys simultaneously for five seconds when power is off.

Open the tray, set DRIVE SELECT to DVD, and press [REC] and [PLAY] simultaneously for 5 seconds.

When the power is off, press [VHS to DVD COPYING], [OPEN/CLOSE] and [STOP] keys simultaneously for 5 seconds.

When the power is off, press [STOP] and [CH UP] keys simultaneously for 5 seconds.

Child lock/unlock Set or release “Child Lock”. Press [ENTER] and [RETURN] by

NTSC/PAL system select To switch PAL/NTSC altemately. The display before execution

Forced power-off When the power button is not effective while

power is ON, turn off the power forcibly. *When Timer REC is ON or EXT-LINK is ON, execute “Forced Power-off” after releasing Timer REC or EXT-LINK.

leaves.

Display in P-off mode. Press [Power] key over than 10

remote controller simultaneously until [X-HOLD] is displayed.

While the power is on (E-E mode), press [STOP] and [OPEN/CLOSE] simultaneously for 5 seconds.

seconds.

Item FL display Key operation

Mode name Description Front Key

Aging Perform sequence of modes as * Aging

Description shown below continually.

Display following the then mode. Set DRIVE SELECT to DVD.

When the power is ON, press [CH DOWN], [VHS to DVD COPYING] and [OPEN/CLOSE] simultaneously for over 5 seconds and less than 10 seconds.

NOTE1:

If Unit has not turned into Aging mode by operations shown above, execute TEST MODE once and reexecute operation shown above. (*All the main unit’s parameters include tuner are initialized by TEST mode.)

NOTE2:

If the unit has hung-up because of pressing keys for over 10 seconds, once turn off the power, and reexecute this command. *When releasing Aging mode, press [POWER] key, AC-OFF.

Aging Contents (Example):

DMR-EZ47VEB

Demonstration lock/unlock

ATP re-execution Re-execute ATP. Display at ATP executing. When the power is on (E-E mode),

Progressive initialization The progressive setting is initialized to

Ejection of the disc is prohibited. The lock setting is effective until unlocking the tray and not released by “Main unit initialization” of service mode.

Interlace.

*When lock the tray.

“LOCK” is displayed for 3 seconds.

*When unlock the tray.

“UNLOCK” is displayed for 3 seconds.

*When press OPEN/CLOSE key while the tray being locked.

Display “LOCK” for 3 seconds.

The display before execution leaves.

When the power is on, press [STOP] and [POWER] keys simultaneously for 5 seconds in the condition that a disc in the tray.

NOTE:

Time difference between pressing [STOP] and [POWER] should be within 0.5 sec.

When the power is on, press [STOP] and [POWER] keys simultaneously for 5 seconds while the tray being locked.

NOTE:

Time difference between pressing [STOP] and [POWER] should be within 0.5 sec.

Press [OPEN/CLOSE] key while the tray being locked.

press [CH UP] and [CH DOWN] simultaneously for 5 seconds.

When the power is on (E-E mode), press [STOP] and [VHS to DVD COPYING] simultaneously for 5 seconds.

DMR-EZ47VEB

7.1.3. (DVD) Service Modes at a glance

Service mode setting: While the power is off, press [STOP], [VHS to DVD COPYING] and [OPEN / CLOSE] simultaneously for five seconds.

Item FL display Key operation

Mode name Description (Remote controller key)

Release Items Item of Service Mode executing is cancelled. Press [0] [0] or [Return] in service

mode.

Error Code Display Last Error Code of U/H/F held by Timer is

displayed on FL. *Details are described in “7.1.1. (DVD) Self-

Diagnosis Functions”.

ROM Version Display 1. Region code (displayed for 5 sec.)

2. Main firm version (displayed for 5 sec.)

3. Timer firm version (displayed for 5 sec.)

4. Drive firm version (displayed for 5 sec.)

5. ROM correction version (displayed for 5 sec.)

6. VHS Microprocessor version (displayed for 5 sec.)

7. VHS ROM correction version (displayed for 5 sec.)

8. ST Microprocessor version (left displayed)

Press [0] [1] in service mode

If any error history does not exist, [F00] is displayed.

Press [0] [2] in service mode

White Picture Output White picture is output as component Output

from AV Decoder. *White picture (Saturation rate : 100%) *It is enable to switch Interlace/Progressive by “I/P switch: [1] [4]”

Magenta Picture Output Magenta picture is output with Component

Output from AV Decoder. *Magenta picture (Saturation rate: 100%) *It is enable to switch Interlace/Progressive by “I/P switch: [1] [4]”

*Initial mode is “Interlace”. Press [1] [1] in service mode.

Switch Interlace/Progressive Press [1] [4] in White Picture Output

mode. *I/P are switched alternately.

*Initial mode is “Interlace”. Press [1] [2] in service mode.

Switch Interlace/Progressive Press [1] [4] in Magenta Picture

Output mode. *I/P are switched alternately.

Item FL display Key operation

Mode name Description (Remote controller key)

RTSC Return in XP (A & V)

AV1 input signal is encoded (XP), decoded (XP) and output decoded signal to external

Initial mode: EE2/ Interlace/ XP/ Audio 48kHz

Press [1] [3] in service mode.

without DISC recording and DISC playback.

DMR-EZ47VEB

I/P Switch Switch Interlace and Progressive in EE mode.

*Initial setting is “Interlace”. *This command is effective during executing “White Picture Output”, “Magenta Picture Output” and “RTSC Return in XP (A & V)” modes.

Audio Mute (XTMUTE) Check whether mute is applied normally by

the timer microprocessor.

Audio Mute (XDMUTE) Check whether mute is applied normally by

the Digital P.C.B..

Audio Pattern Output The audio pattern stored in the internal

memory is output (Lch: 1kHz/-18dB) (Rch: 400Hz/-18dB) *Audio sound clock switching operation of DAC can be confirmed by sub command [2] [4].

Laser Used Time

Check laser used time (hours) of drive.

Indication

Switch Interlace/Progressive Press [1] [4] in RTSC Return XP

mode. *I/P are switched alternately.

Audio 44.1 kHz/ 48 kHz Switch Press [2] [4] in RTSC Return XP

mode. *48 kHz / 44.1 kHz are switched alternately.

Initial mode is Interlace

Press [1] [4] in I/P Switch mode. *I/P are switched alternately.

Switch Interlace/Progressive

Press [2] [1] in service mode.

Press [2] [2] in service mode.

Initial mode (Audio 48kHz) Press [2] [3] in service mode.

Audio 44.1kHz/48kHz switching Press [2] [4] in Audio Pattern Output

mode. *48 kHz / 44.1 kHz are switched alternately.

Press [4] [1] in service mode.

Delete the Laser Used Time

Laser used time stored in the memory of the unit is deleted.

l(*****) is the used time display in hour. lLaser used time of DVD/ CD in Playback/Recording mode is counted.

Press [9] [5] in service mode.

DMR-EZ47VEB

Item FL display Key operation

Mode name Description (Remote controller key)

RAM Drive Last Error RAM Drive error code display.

*For details about the drive error code, refer to the Service Manual for the specific RAM Drive.

1. Error Number is displayed for 5 seconds.

2. Time when the error has occurred is displayed for 5 seconds.

DD: Day hh: Hour mm: Minute

3. Last Drive Error (1/2) is displayed for 5 seconds.

4. Last Drive Error (2/2) is displayed for 5 seconds.

Press [4] [2] in service mode. When “INFO******” is being displayed, past 19 error histories can be displayed by pressing [0] [1]

- [1] [9]

Delete the Last Drive Error

Delete the Last Drive Error information stored on the DVD RAM-Drive.

Laser power confirmation Drive state is judged based on difference

between laser power value at shipping and present laser power value.

5. Error occurring Disc type is displayed for 5 seconds.

6. Disc Maker ID is displayed for 5 seconds.

7. Factor of Drive Error occurring is left displayed

In case that the maker cannot be identified, display is black out.

Press [9] [6] in service mode.

1. into RAM Drive in service mode. (Other media are assumed to be noncorrespondence.)

2. Press [4] [4].

Turn on all FL/LEDs All segments of FL and all LEDs are turned

on.

PB HIGH Signal Output 8 pin of AV 1 Jack (PB HIGH terminal) is High

(approx. 11V DC).

PB MIDDLE Signal Output

8 pin of AV 1 Jack (PB HIGH terminal) is Middle (approx. 5.5V DC)

If DVD-RAM disc in not inserted, [NO DISC] is displayed. If power value study was filed, [ERROR] is displayed.

All segments are turned on. Press [5] [1] in service mode.

Press [5] [2] in service mode.

Press [5] [3] in service mode.

Item FL display Key operation

Mode name Description (Remote controller key)

Front connection inspection

Press all front keys and check the connection between Main P.C.B. and Front key Switches.

Press [5] [4] in service mode.

(1) Each time a key is pressed, segment turned on increases one by one. (2) Total number of keys that have been pressed.

Production Date Display Display the date when the unit was produced.

Press [6] [1] in service mode.

YY: Year MM: Month DD: Day

Display the accumulated

Display the accumulated unit´s working time.

Press [6] [4] in service mode.

working time

(Indicating unit: Second)

Display the Error History Display the Error History stored on the unit. Display reason of error for 5

seconds.

Press [6] [5] in service mode. Then press [0] [1] ~ [9] [9], the past 99 error histories are displayed.

DMR-EZ47VEB

Delete the Error History Delete Error History information stored on the

unit.

01: Defect of Digital P.C.B. (AV DEC / MAIN CPU) 02: Defect of RAM Drive. 03: Defect of Disc. 04: Defect of Digital P.C.B. or Communication Error. 05: Defect of Digital P.C.B. (AV DEC / MAIN CPU) 06: Defect of HDD.

Display the time when the error has occurred for 5 seconds.

DD: Day hh: Hour mm: Minute Accumulated working time till occurring of the error is left displayed.

(Indicating unit: Second)

Press [9] [7] in service mode.

AV4(V)/AV1(RGB) I/O Setting

AV2(Y/C)/AV1(V) I/O Setting

AV2(V)/AV1(Y/C) I/O Setting

AV2(RGB)/AV1(V) I/O Setting

Set input to AV4 (V) and set output to AV1 (RGB) for I/O checking

Set input to AV2 (Y/C) and set output to AV1 (V) for I/O checking

Set input to AV2 (V) and set output to AV1 (Y/C) for I/O checking

Set input to AV2 (RGB) and set output to AV1 (V) for I/O checking

Press [8] [0] in service mode.

Press [8] [1] in service mode.

Press [8] [2] in service mode.

Press [8] [3] in service mode.

DMR-EZ47VEB

Item FL display Key operation

Mode name Description (Remote controller key)

P50(H) Output Timer Microprocessor IC9701-76 output High

signal for AV1-pin 10 passing through inverter (approx. 0V DC at AV1-pin 10).

When OK.

When NG.

Press [8] [4] in service mode.

P50(L) Output Timer Microprocessor IC9701-76 output Low

When OK.

Press [8] [5] in service mode. signal for AV1-pin 10 passing through inverter (approx. 4.4V DC at AV1-pin 10).

When NG.

Tray OPEN/CLOSE Test The tray is opened and closed repeatedly.

Press [9] [1] in service mode

*When releasing this mode, press

the [POWER] button of Remote

“*” is number of open/close cycle

Controller more than 10 seconds.

times.

Error code initialization Initialization of the last error code held by

Press [9] [8] in service mode. timer (Write in F00)

Initialize Service Last Drive Error, Error history and Error

Press [9] [9] in service mode. Codes stored on the unit are initialized to factory setting.

Finishing service mode Release Service Mode. Display in STOP (E-E) mode. Press power button on the front

panel or Remote controller in

service mode.

7.2. (VHS) Self-Diagnosis and Special Mode Setting

7.2.1. (VHS) Special Modes Setting

Note:

Set DRIVE SELECT to VHS.

Item FL display Key operation

Mode name Description Front Key

Tracking Center Tape Tracking is adjusted to center

FIX position.

VHS Service Mode In order to make service easy, a part

of inside information of a microprocessor is displayed on FIP. *Details are described in "7.2.2. (VHS) Service Mode".

No display. During PLAYBACK, press [CH UP]

DMR-EZ47VEB

and [CH DOWN] keys simultaneously.

Press [STOP], and [EJECT] keys simultaneously for 3 seconds when power is off.

Releasing EXT LINK and Timer Program

Eject Ejecting Cassette Tape No display. While in other than Timer REC mode,

Releasing Continuation EXT LINK and Timer Program

No display. While in EXT LINK and Timer REC

mode, press [STOP] key for 3 seconds.

press [STOP] key for 3 seconds or press [STOP ] key of the Remote Controller for 3 seconds.

DMR-EZ47VEB

7.2.2. (VHS) Service Modes

1. Set DRIVE SELECT to VHS.

2. When power is off, press [STOP] and [EJECT] keys simultaneously for 3 seconds to into Service Mode.

3. In service mode, press [STOP] and [EJECT] keys simultaneously to add Service Number.

Service

Mode

Number

0 Indication for the

1 Indication for the

2 Indication for the

3 Self-diagnosis

4 Self-diagnosis

5 Self-diagnosis

6 Indication for the

7 Manual mechanism

Contents Contents of Indication on minute Contents of Indication on second Remarks

inner data of IC6001

history (1st)

history (2nd)

history (3rd)

inner data of IC6001

operation

VHS mode (Real time)

Tape beginning and ending detection data (Real time)

00: Both tape beginning and ending have not been detected 01: Tape ending is detecting now 02: Tape beginning is detecting now 03: Both tape beginning and ending are detecting now

Mechanism position (Real time) Ordering for the Motors (Real time) The following functions are 0L: EJECT position

02: DOW N position 03: RREW position 04: LOAD position 05: REV position 06: PLAY position 07: POFF position 08: STOP_R position 09: STOP_F position 0 - : FF/REW position 0_ : Intermediate between each positions

1st history of error number "- -" is displayed.

2nd history of error number "- -" is displayed

3rd history of error number "- -" is displayed

Servo data (4 digits) (Real time)

Mechanism position (Real time) Ordering for the Motors Press the following key; 0L: EJECT position

Process number of the mechanism movement (Real time)

Key code (Real time)

Indicate the receiving code when the key of VCR or remote controller being operated.

0*, 2*: CYL off,

CAP off

1*: CYL off,

CAP on (fwd)

3*: CYL off,

CAP on (rev)

8*, A*: CYL on,

CAP off

9*: CYL on,

CAP on (fwd)

B*: CYL on,

CAP on (rev) *0: Motor off *1: Loading *2: Unloading *3: Break (Load + Unload)

0*, 2*: CYL off,

CAP off

1*: CYL off,

CAP on (fwd)

3*: CYL off,

CAP on (rev) 8*, A*: CYL on,

CAP off

9*: CYL on,

CAP on (fwd)

B*: CYL on,

CAP on (rev) *0: Motor off *1: Loading *2: Unloading *3: Break (Load + Unload)

prohibited to operate the mechanism without cassette tape. lTape beginning and ending detection.

lReel lock detection lTape detection and tape position

detection

Press the EJET key for over 3 seconds in this mode, and then the VCR is shifted into the special modes, such as PG Adjustment, Model Code Setting, and so on. The orders for the motors are as follows.

PLAY key : Loading STOP key : Unloading

DMR-EZ47VEB

7.2.3. (VHS) Self-Diagnosis Functions

This model has a self-diagnosis. If the VHS section detects trouble during installation or during use, the power is automatically turned off or become power-save mode and it is memorized into the EEPROM (IC9703) as error code of two-digit number. It´s memorized error code can be displayed in "second" display portion (the last 2 digits of the FIP) by placing the unit is Service Mode Number 2 when turning on Service Information Display as for example "01" or "02" etc as below. If a second error occurs, the most recent error will be memorized and can be displayed in Service Mode Number 2. It can be memorized until 3 self-diagnosis histories in maximum.

In order to erase the memorized error code, press STOP and EJECT buttons on the Front Panel simultaneously over 5 seconds during turning on Service Information Display mode.

7.2.3.1. Memory of the self-diagnosis history

*This is effective only in Service Mode 3, 4, 5.

7.2.3.1.1. Error Numbers at a glance

Memory No. (Error Code) Reason 01 The cylinder could not be started. (Error of the cylinder or the cylinder driver.) 02 The CAP FG could not be detected. 03 Mechanism lock during without the unloading and the cassette-up. 04 Mechanism lock during unloading 05 S-reel pulse cannot be detected during unloading. (Error of the S-reel circuit or the Capstan circuit) 06 Mechanism lock during the Cassette-up. 09 Communication error between VHS Microprocessor (IC6001) and Timer Microprocessor (IC9701). 15 S-reel pulse cannot be detected when a cassette tape is inserted.

16 Detection of the Cylinder lock during the constant rotation 17 Detection of S-reel lock during the constant tape running 18 Detection of T-reel lock during the constant tape running 2*

Refer to following Note 80 An exceptional ejection depends on a accidental error

(Error of the S-reel circuit or the Capstan circuit)

An error while the PG Automatic Adjustment

Note:

2* is as follows.

20 NG1 in the PG Shifter Automatic Adjustment (The cylinder rotation is unstable during the automatic adjustment.) 21 NG2 in the PG Shifter Automatic Adjustment (The vertical sync signal is lacked while over 5 seconds on the alignment tape.) 22 NG3 in the PG Shifter Automatic Adjustment (The installing position of Heads to the cylinder is our of specification. 23 NG4 in the PG Shifter Automatic Adjustment (The servo is not locked to the cylinder for more than 10 sec.)

7.2.3.1.2. Memory for the self-diagnosis history

1. The self-diagnosis result is memorized the state of the moment of detecting.

2. There are the histories from number 1 to number 3.

3. The latest error is memorized on history number 1, and then the old histories are shifted to the history number 2 and 3.

The error code memorized in the history number 2 and 3 is over-written by shift.

4. If the latest error is the same with the history number 1 (2nd-latest), it is not memorized.

(The same error code is not memorized in succession)

7.2.3.1.3. Clear for the self-diagnosis history

1. Press FF and EJECT buttons on the VCR simultaneously over 5 seconds during turning on Service Information Display mode.

DMR-EZ47VEB

7.2.3.1.4. Indication of the self-diagnosis history.

The self-diagnosis histories can be indicated on the FIP with Service Mode number 3 to 5.

The procedure of service mode setting and indication format are the same as usual.

8 Service Fixture & Tools

(For DVD)

Part Number Description Compatibility

RFKZ0168 Extension Cable (Dig. Interface P.C.B. - FAN / 3 Pin) Same as E50 / ES30V Series VFK1729 Extension Cable (Dig. Interface P.C.B. - Main P.C.B. / 13 Pin) Same as E75V/ES30V Series RFKZ0216 Extension Cable (Main P.C.B. - Dig. Interfa ce P.C.B. / 23 Pin / 40 mm) Same as E55 Series RFKZ0240 Extension Cable (Main P.C.B. - Dig. Interfa ce P.C.B. / 19 Pin / 40 mm) Same as EH75V / ES30V Series

Extension Cable (Main P.C.B. - Dig. Interface P.C.B. / 19 Pin / 40 mm)

RFKZ0215 Extension Cable (Main P.C.B. - Front Jack P.C.B. / 12 Pin) Same as ES15 / E55 / ES30V Series

Extension Cable (Dig. Interface P.C.B. - FL Drive P.C.B. / 12 Pin) RFKZ0238 Extension Cable (Dig. Interface P.C.B. - FL Drive P.C.B. / 8 Pin) Same as E75V Series RFKZ0260 Extension Cable (Dig. Interface P.C.B. - Digital P.C.B. / 88 Pin) Same as ES15 / EH55 Series JZS0484 Eject Pin Same as ES15 / E50 Series RFKZ03D01K Lead Free Solder (0.3mm/100g Reel) Same as ES15 Series RFKZ06D01K Lead Free Solder (0.6mm/100g Reel) Same as ES15 Series RFKZ10D01K Lead Free Solder (1.0mm/100g Reel)) Same as ES15 Series RFKZ0316 Solder Remover (Lead free low temperature Solder/50g) Same as ES15 Series RFKZ0328 Flux Same as ES15 Series RFKZ0329 Bottle of Flux Same as ES15 Series

(For VHS)

Part Number Description Compatibility

VFJ8125H3F PAL VHS Alignment Tape Same as E75V / ES30V Series VFK0329 Post Adjustment Screwdriver Same as E75V / ES30V Series VFK0330 Fine Adjustment Gear Driver Same as E75V / ES30V Series

DMR-EZ47VEB

9 Assembling and Disassembling Instructions

9.1. Disassembly Flow Chart

The following chart is the procedure for disassembling the casing and inside parts for internal inspection when carrying out the servicing.

To assemble the unit, reverse the steps shown in the chart below.

+ 97 hidden pages

Panasonic DMR-EZ47VEB Service Manual

Specifications and Main Features

Frequently Asked Questions

User Manual