Panasonic DMREZ-47-VP, DMREZ-475-VP Service manual

ORDER NO.CHM0704017CE

DVD Recorder

Model No.DMR-EZ47VP

DMR-EZ475VP

Vol. 1

Colour

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

B24

DMR-EZ47VP / DMR-EZ475VP

CONTENTS

Page Page

1 Safety Precaution 4

1.1. General guidelines

1.2. Caution for fuse replacement

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

3.2. Caution for DivX

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 (L) P.C.B. & Front (R) P.C.B.

9.7. DVD drive

9.8. SD/DV Jack P.C.B.

9.9. Rear Panel, Fan Motor

9.10. Digital P.C.B.

9.11. VHS Mechanism Unit

9.12. Main P.C.B.

9.13. Digital I/F P.C.B.

10 Measu remen ts and Adjustments

10.1. Service Positions

10.2. Caution for Replacing Parts

10.3. 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 Block Diagram

11.4. Analog Audio Block Diagram

12 14

16 26

32 33

33 34

35 36 36 37 39 39 40 40 41 42 42

43 47 50

53 54 55 57

4 4

5 6 7

8 8

11.5. Analog Timer Block Diagram

11.6. System Control & Servo Block Diagram

12 Schem atic Diagram

12.1. Interconnection Schematic Diagram

12.2. Power Supply Section (Power & Digital I/F P.C.B.(1/3)) Schematic Diagram (P)

12.3. Digital I/F (1/4) Section (Power & Digital I/F P.C.B.(2/3)) Schematic Diagram (IF)

12.4. Digital I/F (2/4) Section (Power & Digital I/F P.C.B.(2/3)) Schematic Diagram (IF)

12.5. Digital I/F (3/4) Section (Power & Digital I/F P.C.B.(2/3)) Schematic Diagram (IF)

12.6. Digital I/F (4/4) Section (Power & Digital I/F P.C.B.(2/3)) Schematic Diagram (IF)

12.7. Tuner Section (Power & Digital I/F P.C.B.(3/3)) Schematic Diagram (IF)

12.8. Video Section (Main P.C.B.(1/4)) Schematic Diagram (V)

12.9. VHS Audio Section (Main P.C.B.(2/4)) Schematic Diagram (A)

12.10. Syscon/Servo/Timer (1/4) Section (Main P.C.B.(3/4)) Schematic Diagram (S)

12.11. Syscon/Servo/Timer (2/4) Section (Main P.C.B.(3/4)) Schematic Diagram (S)

12.12. Syscon/Servo/Timer (3/4) Section (Main P.C.B.(3/4)) Schematic Diagram (S)

12.13. Syscon/Servo/Timer (4/4) Section (Main P.C.B.(3/4)) Schematic Diagram (S)

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

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

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

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

12.18. DV Jack/SD Card Schematic Diagram

12.19. Front (L) Schematic Diagram

12.20. Front (R) Schematic Diagram

13 Printe d Circuit Board

13.1. Power & Digital I/F P.C.B.

13.2. Main P.C.B.

13.3. DV Jack/SD Card P.C.B.

13.4. Front (L) P.C.B., Front (R) P.C.B.

14 Appendix for Schematic Diagra m

14.1. Voltage and Waveform Chart

58 59

80 82 83 83

85 90 95 96

14.2. Abbreviations 104

15 Parts and Exploded Views

110

15.1. Exploded Views

15.2. Replacement Parts List

DMR-EZ47VP / DMR-EZ475VP

110 114

DMR-EZ47VP / DMR-EZ475VP

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 1MΩ and 5.2MΩ.

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 .)

4. Check each exposed metallic part, and measure the voltage at each point.

5. Reverse the ACplugintheACoutlet and repeateach 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. Plug the AC cord directly into the AC outlet. Do not use an isolation transformer for this check.

2. Connect a 1.5kΩ, 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.

1.2. Caution for fuse replacement

Figure 1

DMR-EZ47VP / DMR-EZ475VP

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-EZ47VP / DMR-EZ475VP

2.2. Precaution of Laser Diode

DMR-EZ47VP / DMR-EZ475VP

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-EZ47VP / DMR-EZ475VP

3 Service Navigation

3.1. Service Information

3.2. Caution for DivX

4 Specifications

DMR-EZ47VP / DMR-EZ475VP

5 Location of Controls and Components

5.1. Each Buttons

DMR-EZ47VP / DMR-EZ475VP

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-EZ47VP / DMR-EZ475VP

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 [CH UP] button simultaneously for more

than 5 seconds.

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.

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.

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 Case, Front Panel and the Mechanism by referring to "9 Assembling

and Disassembling Instructions"

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-EZ47VP / DMR-EZ475VP

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.

6. Attach Loading Motor and tighten the screw.

DMR-EZ47VP / DMR-EZ475VP

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 the drive has abnormal 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

U72 HDMI connection error

(communication error)

U73 HDMI connection error

(authentication error)

U76 Injustice disc error HDMI cannot output because you are

U88 The unit is carrying out its

recovery process.

U99 Hang-up Displayed when communication error has

F00 No error information Initial setting for error code in memory

This error is displayed when there are any communication problems with the unitand 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)

connected to a model that does not support copyright protection.

occurred between Main microprocessor and Timer microprocessor.

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

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

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

No display No display

DMR-EZ47VP / DMR-EZ475VP

Error Code Diagnosis contents Description Monitor Display Automatic FL display F09 Serial Communication Error

between VHS Microprocessor and Timer Microprocessor.

F34 Initialization error when main

microprocessor is started up for program recording

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

F60 DVD module has not been

started.

Please confirm Serial Communication terminal of Microprocessor.

NOTE:

If F09 appears just after updating Firmware, pull off and insert AC plug, then it will disappear.

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.

saved in memory. Defect of Digital P.C.B.

Mode: No change

No display

No display No display

No display

HDMI HDMI connection check This unit is confirming that ut is connected

F74 HDIM Device Key

Communication error.

F75 HDIM Device Key Information

error

UNSUPPORTUnsupported disc error *An unsupported format disc was played,

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

with equipment compatible with HDAVI control.

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.

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.

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.

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

No display

“This disc is incompatible.”

Display for 5 seconds.

“Cannot read. Please check the disc.”

HARD ERR

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

SELF CHECK

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

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

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.

No display

“0” is displayed one by one.

DMR-EZ47VP / DMR-EZ475VP

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

“0” is displayed one by one.

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 are initialized. Press [VHS to DVD COPYING],

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 Modes 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. *During Schedule Recording, Forced disc eject is invalid. While Demonstration Lock is being set, this Forced disc eject function is not accepted.

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

power is ON, turn off the power forcibly. *When Schedule Recording is ON, execute “Forced Power-off” after releasing Schedule Recording.

Aging Perform sequence of modes as * Aging

Description shown below continually.

No display When the power is on (E-E mode).

The display before execution leaves.

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

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

[REC] and [OPEN/CLOSE] keys simultaneously for five seconds when power is off.

While the tray is open, 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.

seconds.

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 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.

DMR-EZ47VP / DMR-EZ475VP

Item FL display Key operation

Mode name Description Front Key

Aging Contents (Example):

DMR-EZ47VP / DMR-EZ475VP

Item FL display Key operation

Mode name Description Front Key

Demonstration lock/unlock

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. *The time difference of simultaneous key pressings should be within 0.5 sec.

Note1:

When a disc in not in tray, this setting is not effective.

Note2:

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

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

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

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

ATP Initialization ATP setting and all parameters (including

clock) are intialized, and the unit turns off automatically.

It is same with display in stop mode. When the power is on (E-E mode),

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

DMR-EZ47VP / DMR-EZ475VP

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.

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 (left displated)

White Picture Outpu t 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]”

Press [0] [2] in service mode

*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.

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]”

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 mode.

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..

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

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

Initial mode is Interlace

Switch Interlace/Progressive

Output mode. *I/P are switched alternately.

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

Press [2] [1] in service mode.

Press [2] [2] in service mode.

DMR-EZ47VP / DMR-EZ475VP

Item FL display Key operation

Mode name Description (Remote controller key)

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.

Indiction

Delete the Laser Used Time

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

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.

●(*****) is the used time display in hour.

●Laser used time of DVD/ CD in Playback/Recording mode is counted.

Press [9] [5] in service mode.

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.

Press [4] [2] in service mode. When “INFO******” is being displayed, past 99 error histories can be displayed by pressing [0] [1]

- [9] [9]

2. Time when the error has occurred (1/2) is displayed for 5 seconds.

YY: Year MM: Month DD: Day

3. Time when the error has occurred (2/2) is displayed for 5 seconds.

hh: Hour mm: Minute ss: Second

4. Last Drive Error code No.1 is displayed for 5 seconds.

DMR-EZ47VP / DMR-EZ475VP

5. Last Drive Error code No.2 (1/2) is displayed for 5 seconds. (This Error Code is unnecessory for service.)

6. Last Drive Error code No.2 (2/2) is displayed for 5 seconds. (This Error Code is unnecessory for service.)

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

DISC 1: DVD DISC 2: CD DISC 3: DVD-RAM 2.6GB DISC 4: DVD-RAM 4.7GB DISC 5: DVD-R DISC : Unknown Disc

8. Unused (No display)

9. Factor of Drive Error occurring is left displayed

Delete the Last Drive Error

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

Press [9] [6] in service mode.

DMR-EZ47VP / DMR-EZ475VP

Item FL display Key operation

Mode name Description (Remote controller key)

Laser power confirmation Drive state is judged based on difference

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

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

on.

S1 signal output Forcibly superimpose the S1 signal (approx.

4.5V DC) on the EE chroma signal, and check the output on the S terminal.

S2 signal output Forcibly superimpose the S2 signal (approx.

2V DC) on the EE chroma signal, and check the output on the S terminal.

Front connection inspection

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

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

2. Press [4] [4].

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.

Press [5] [4] in service mode. *When finish this mode, press [POWER] for 10 seconds.

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

Display the accumlated

Display the accumulated unit´s working time.

working time

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

Press [6] [1] in service mode.

YY: Year MM: Month DD: Day

Press [6] [4] in service mode.

(Indicating unit: Second)

Item FL display Key operation

Mode name Description (Remote controller key)

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] ~ [1] [9], the past 19 error histories are displayed.

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)

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

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

DMR-EZ47VP / DMR-EZ475VP

(Indicating unit: Second)

Delete the Error History Delete Error History information stored on the

Press [9] [7] in service mode.

unit.

Tray OPEN/CLOSE Test The RAM drive tray is opened and closed

repeatedly.

Press [9] [1] in service mode *When releasing this mode, press the [POWER] button of Remote Controller more than 10 seconds.

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.

DMR-EZ47VP / DMR-EZ475VP

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

7.2.1. (VHS) Self-Diagnosis Functions

This model has a self-diagnosis and display function. If the VHS section detects trouble during installation or during use, one of the following Error Codes will automatically appear in the display on VHS side. Error Codes are displayed in the form of a single English letter followed by two numbers, as for example "H01".

Note:

1. The indication "U" is displayed on the FIP while power remains on.

2. The indication "H" or "F" is displayed on the FIP, and the power is automatically turned off. When the power is turned on again, the Error indication code will disappear and the unit will return to normal display mode (either clock or counter is displayed).

3. This Error indication code will be stored in the microprocessor even after the AC plug being disconnected. The two-digit number portion of the stored Error indication code can be re-displayed in "second" display portion (the last 2

digits of the FIP) by placing the unit is Service Mode Number 3 When turning on Service Data Display as for example "01" or "02" etc. If a second error occurs, the most recent error will be displayed and stored until 3 self-diagnosis histories in maximum.

4. To erase the stored Error Code data, Press STOP and EJECT buttons on VHS simultaneously for over 5 seconds in Service Mode 3.

Error Number at a glance

Memory No.

(Error No.)

H01 The cylinder could not be started.

(Error of the cylinder or the cylinder driver.) H02 The CAP FG could not be detected. Yes Yes F03 Mechanism lock during without the unloading and the cassette-up. Yes Yes F04 Mechanism lock during unloading Yes Yes F05 S-reel pulse cannot be detected when a cassette tape is inserted.

(Error of the S-reel system or the Capstan system.) F06 Mechanism lock during the Cassette-up. Yes Yes F09 Communication Error between VHS Microprocessor (IC6001) and Timer

Microprocessor (IC7501) H07 The recording circuit can not be operated in REC mode. Yes Yes H08 The recording circuit is operated in except for REC mode. Yes Yes U11 Cylinder clogs during the PLAY mode. Yes Yes F15 S-reel pulse cannot be detected when a cassette tape is inserted.

(Error of the S-reel system or the Capstan system.) H16 Detection of the Cylinder lock during the constant rotation No Yes H17 Detection of S-reel lock during the constant tape running Yes Yes H18 Detection of T-reel lock during the constant tape running Yes Yes F20 NG1 in the PG Shifter Automatic Adjustment

(The cylinder rotation is unstable during the automatic adjustment.) F21 NG2 in the PG Shifter Automatic Adjustment

(The vertical sync signal is lacked while over 5 seconds on the alignment tape.) F22 NG3 in the PG Shifter Automatic Adjustment

(The installing position of Heads to the cylinder is our of specification.) F23 NG4 in the PG Shifter Automatic Adjustment

(The servo is not locked to the cylinder for more than 10 sec.) H80 An exceptional ejection depends on a Error No Yes

Reason Automatic display Memory

Yes Yes

No Yes

Yes Yes

No Yes

Yes Yes

7.2.2. (VHS) Special Modes Setting

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 "7.2.3.

(VHS) Service Modes ".

DMR-EZ47VP / DMR-EZ475VP

No display. During PLAYBACK, press [CH UP]

and [CH DOWN] keys simultaneously.

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

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

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

7.2.3. (VHS) Service Modes

Set OPERATION SELECT to VHS. When power is OFF, press [STOP] and [EJECT] keys simultaneously for 3 seconds to into Service Mode. In Service Mode, press [STOP] and [EJECT] keys simultaneously to add Service Number.

7.2.3.1. (VHS) Service Mode and Service Data at a glance

Service

Number

0 Indication for the

1 Indication for the

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

inner data of IC6001

VHS mode (Real time)

VHS mode Management number of the

Starting / finishing edges detecting data (Real time)

00: Both starting / finishing edges have not been 01: Starting edge is detecting now 02: Finishing edge is detecting now 03: Both starting / finishing edges are detecting now

Process number (Real time)

processing during mechanism shifting

Data of receiving key (Real time)

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

DMR-EZ47VP / DMR-EZ475VP

Service

Number

2 Indication for the

inner data of IC6001

3 Self-diagnosis

history (1st)

4 Self-diagnosis

history (2nd)

5 Self-diagnosis

history (3rd)

6 Indication for the

inner data of IC6001

7 Manual mechanism

operation

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

Mechanism position (Real time) 0L: EJECT position 02: DOWN position 03: RREW position 04: LOAD position 05: REV position 06: PLAY position 07: POFF position 08: STOP_R position 09: STOP_F position

- : FF/REW position

- : Intermediate between each positions

Error number of history 1 Supplementary data 1 and 2 of

Error number of history 2 Supplementary data 1 and 2 of

Error number of history 3 Supplementary data 1 and 2 of

Real time servo data (4 digits) (Real time)

Higher rank 1 BYTE of SERVO data Lower rank 1 BYTE of SERVO data Real time mechanism position Real time ordering for the Motors Press the STOP key, and then the 0L: EJECT position

02: DOWN position 03: RREW position 04: LOAD position 05: REV position 06: PLAY position 07: POFF position 08: STOP_R position 09: STOP_F position

- : FF/REW position

- : Intermediate between each positions

Ordering for the Motors (Real time) 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)

history 1.

history 2.

history 3.

0*, 2*: CYL off,

CAP off

1*: CYL off,

CAP on (fwd) 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)

There are next conditions in this mode for enable the mechanism operations without a cassette tape.

● The starting / finishing edges are not detected.

● The reel lock is not detected

● The tape and the positions are not

detected. , And so on. Press the EJET key for over 3 seconds in this mode, and then the VHS is shifted into the special modes, such as PG Adjustment, Model Code Setting, and so on.

The orders for the motors are as follows. Bit 7: CYL ON/OFF Bit 6: -----------------Bit 5: CAP FWD/REV Bit 4: CAP ON/OFF Bit 3: -----------------Bit 2: -----------------Bit 1: UNLOADING(H) Bit 0: LOADING(H)

In the Self-Diagnosis Memory, next 3 BYTE is memorized for an Error. 1 BYTE: Its Error number 2 BYTE: Its supplementary data

In these modes, the supplementary data 3 and 4 instead of the Error number and supplementary data 1 and 2 are indicated only while pressing STOP key.

cassette tape is unloaded.

7.2.3.2. Example of FIP

7.2.4. (VHS) Self-Diagnosis History Memory Function

7.2.4.1. (VHS) Condition for memorizing of the self-diagnosis history

1. The self-diagnosis result and the supplementary data are the condition memorized just as an Error is detected.

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, 3.

4. Put out data from the memory number 3 by the shift is deleted.

5. If the latest Error is same with the history number 1 (2nd-latest), it is not memorized. (The same Error number is not memorized in succession)

DMR-EZ47VP / DMR-EZ475VP

7.2.4.2. (VHS) Condition for clearing the self-diagnosis history

1. A case of that press the STOP key and the EJECT key simultaneously over 5 seconds.

7.2.4.3. (VHS) Indication of the self-diagnosis history.

1. The self-diagnosis histories and its supplementary data could be indicated on the FIP with Service mode of number from 3 to

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

Both the Error numbers and its supplementary data of history 1, 2and 3 are indicated by selecting the Service mode 3, 4 and 5 as shown above.

In case of that any Error has not been memorized, the Error number and its supplementary data is indicated as " - ".

7.2.4.4. (VHS) Display of Supplementary Data 3 and 4

During displaying the Self-Diagnosis History, press [STOP] key on front panel to change the display. *Example of Display

A: Service Mode Number. B: Supplementary Data 3...Mechanism process shifting Number. C: Supplementary Data 4...LM(Loading Motor information)

*Display of occurred while mechanism was between REV position and LOAD position.

[EJECT] [FF] [REW]

10: PLAY → passing REV 11: passing REV 12: passing REV → LOAD (Capstan STOP) 13: LOAD → DOWN 14: DOWN → EJECT 15: EJECT completion

[PLAY] [REC] [STILL] 20: Cylinder starting up, Phase drawing 30: Cylinder starting up, Phase drawing 40:Turning forward 21: Audio muting, VV selection 31: REC signal output 41:Speed is 0, Capstan is OFF [P.ON] [STILL → PLAY] [CUE]

-- Process of turning on power 48: Tape sending 49: x2 speed sending, Turning point of

[P.OFF] [CUE → PLAY] [REV] 70: PLAY → P.OFF 4A: Finishing edge Checking, Tape sending 80: PLAY → P.OFF

means that " Loading Motor turns ON when [EJECT] button was pressed, but an error has

U0: PLAY → STOP F U1: STOP F → FF U2: FF starting up

4-: PLAY Checking, Tape sending 81: Rewinding

A0: PLAY → STOP F A1: STOP → REW A2: REW starting up

Calculating remains

P.OFF → REV

DMR-EZ47VP / DMR-EZ475VP

<Supplementary Data 4> (LM Information)

Result of request of driving Loading Motor.

Display Description

1 There was no change of mechanism position. (Loading Motor was OFF) 2 There was some change of mechanism position. (Loading Motor was ON)

7.2.5. (VHS) Description of Self Diagnosis Memory

In this Self-Diagnosis Function, in case error has occurred continuously, maximum of the newest 3 error data are memorized.

And in order to analyze cause of error, the error number and the supplementary data of mode, mechanism position and so on are memorized.

7.2.5.1. (VHS) Error Number and Supplementary Data

The Supplementary Data as shown below are memorized to each error number.

Error No. Reason Supplementary Data

Data 1 Data 2 Data 3 Data 4

01 The cylinder could not be started.

(Error of the cylinder or the cylinder driver.) 02 The CAP FG could not be detected. VHS mode - Process No. Number of FG 03 Mechanism lock during without the unloading and the

cassette-up. 04 Mechanism lock during unloading VHS mode - Process No. LM information 05 S-reel pulse cannot be detected when a cassette

tape is inserted.

(Error of the S-reel system or the Capstan system.) 06 Mechanism lock during the Cassette-up. VHS mode Standby position Process No. LM information 07 The recording circuit can not be operated in REC

mode. 08 The recording circuit is operated in except for REC

mode. 09 Serial communication Error between VHS

Microprocessor (IC6001) and Timer Microprocessor

(IC7501). 11 Cylinder clogs during the PLAY mode. VHS mode - Process No. 15 S-reel pulse cannot be detected when a cassette

tape is inserted.

(Error of the S-reel system or the Capstan system.) 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 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.) 80 An exceptional ejection depends on a Error VHS mode Refer to *Note 3 Process No. -

VHS mode - - -

VHS mode Standby position Process No. LM information

VHS mode Tape position Process No. LM information

VHS mode - Process No. -

- - - -

VHS mode Value of S-Reel Pulse

counted

VHS mode Tape position Process No. -

VHS mode Tape position Process No. Number of FG

VHS mode - Process No. -

Process No. -

Note 1: Details of "VHS mode" of the Supplementary Data 1 (These values are hexadecimal indication)

0: STOP, 1: EJECT, 2: REW, 3: FF, 4:REV, 5: CUE, 6: SLOW, 7: POWEROFF, 8: PLAY, 9: STIL, A: REC, B: REC PAUSE, C: ADUB, D: ADUB PAUSE, E: INSERT, F: INSERT PAUSE

Note 2: Explanation of "Tape position" of the Supplementary Data

The Tape position Data is the area data of S-reel that is used for judgment of reducing speed in the Main microprocessor IC6001, and as the tape position is moved from the starting edge to the finishing edge, the value becomes smaller.

The Tape Data does not become "0" even if the tape reaches the finishing edge as the hub remains, and the tape position values are different between the large hub and the small hub as the each diameters are different from each other.

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