Panasonic DMR-EX93CEG User manual

© Panasonic Corporation 2010.
Unauthorized copying and distribution is a violation
of law.
ORDER No. DSD1006036CE
DVD Recorder
Model No. DMR-EX93CEG
Vol. 1
Colours
(S).......................Silver Type
(K).......................Black Type

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TABLE OF CONTENTS PAGE PAGE
1 Safety Precautions----------------------------------------------- 4
1.1. General guidelines ---------------------------------------- 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
3 Service Navigation----------------------------------------------- 8
3.1. Service Information --------------------------------------- 8
3.2. Caution for DivX ------------------------------------------- 8
3.3. Micro Fuse conducting check -------------------------- 9
3.4. Operation check when a USB device is
connected --------------------------------------------------10
4 Specifications ----------------------------------------------------11
5 Location of Controls and Components ------------------14
6 Operating Instructions-----------------------------------------16
6.1. Taking out the Disc from DVD-Drive Unit when
the Disc cannot be ejected by OPEN/CLOSE
button--------------------------------------------------------16
7 Service Mode -----------------------------------------------------18
7.1. Self-Diagnosis and Special Mode Setting----------18
8 Service Fixture & Tools----------------------------------------34
9 Disassembly and Assembly Instructions ---------------35
9.1. Disassembly Flow Chart--------------------------------35
9.2. P.C.B. Positions-------------------------------------------36
9.3. Top Case----------------------------------------------------37
9.4. Front Panel-------------------------------------------------37
9.5. Front (L) P.C.B., Front (R) P.C.B.---------------------38
9.6. HDD----------------------------------------------------------38
9.7. DVB-C CI P.C.B.------------------------------------------39
9.8. Rear Panel, Fan Motor----------------------------------39
9.9. RAM/Digital P.C.B. Module-----------------------------40
9.10. Power P.C.B.-----------------------------------------------41
9.11. Main P.C.B.-------------------------------------------------42
10 Measurements and Adjustments---------------------------43
10.1. Service Positions -----------------------------------------43
10.2. Caution for Replacing Parts----------------------------48
10.3. Standard Inspection Specifications after
Making Repairs -------------------------------------------50

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1 Safety Precautions
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 metal-
lic cabinet part on the equipment such as screwheads,
connectors, control shafts, etc. When the exposed metal-
lic part has a return path to the chassis, the reading
should be between 1MΩand 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.)
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 sensi-
tivity, to measure the potential across the resistor.
4. Check each exposed metallic part, and measure the volt-
age 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 mea-
surement is outside of the limits specified, there is a pos-
sibility of a shock hazard, and the equipment should be
repaired and rechecked before it is returned to the cus-
tomer.
Figure 1

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2Warning
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 Elec-
trostatic Sensitive (ES) Devices. Examples of typical ES devices are integrated circuits and some field-effect transistor-sand semi-
conductor "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 alumi-
num 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 compara-
ble 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).

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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
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.
RFKZ03D01KS-----------(0.3mm 100g Reel)
RFKZ06D01KS-----------(0.6mm 100g Reel)
RFKZ10D01KS-----------(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%
The letter of “PbF” is printed either foil side or components side on the PCB using the lead free solder.
(See right figure)

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3 Service Navigation
3.1. Service Information
3.2. Caution for DivX

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3.3. Micro Fuse conducting check
This unit uses the Micro Fuse.
Check the Micro Fuse conducting using the Tester at the check points below.

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3.4. Operation check when a USB device is connected
You can check the operation status (normal or abnormal) of the USB connection part of this unit easily as shown below.
Connect each device to the USB terminal on the front panel and check the operation status on the TV monitor.
Normal operation:
Automatically displayed when the USB connection is made to a digital camera, etc.
(Example below: When JPEG materials have been recorded)
(*Displayed items differ depending on the recorded contents.)
Abnormal operation (Example 1):
Warning is displayed automatically if overcurrent is detected when a USB device is connected.
(*When a USB device or this unit’s USB terminal shorts out or the power supply type of USB device is connected)
Abnormal operation (Example 2):
When the terminal of USB device is damaged or open, there is no display on the TV monitor.

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4 Specifications

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5 Location of Controls and Components

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6 Operating Instructions
6.1. Taking out the Disc from DVD-Drive Unit when the Disc cannot be
ejected by OPEN/CLOSE button
6.1.1. Forcible Disc Eject
6.1.1.1. When the power can be turned off.
1. Turn off the power and press [STOP] [CH UP] keys on the front panel simultaneously for 15 seconds.
6.1.1.2. When the power can not be turned off.
1. Press [POWER] key on the front panel for over 4 seconds to turn off the power forcibly, and press [STOP] [CH UP] keys on
the front panel simultaneously for 15 seconds.
6.1.2. When the Forcible Disc Eject can not be done.

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1. Turn off the power and pull out AC cord.
2. Remove the Top Case.
3. Put deck so that bottom can be seen.
4. Slide SLIDE CAM by Paper Clip or minus screw driver (small) in the direction of arrow to eject tray slightly.
5. Put deck upward, and push out Tray by Paper Clip or minus screw driver (small).

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7 Service Mode
7.1. Self-Diagnosis and Special Mode Setting
7.1.1. 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
controller codes are not matched. No display
“*” is remote controller code of the
main unit.
Display for 5 seconds.
U50 Antenna Short U50 is displayed when a short circuit was
detected at Antenna Input while "Active
Antenna" of "Connection" of "FUNCTION
MENU" is ON, And then "Active Antenna" is
compulsorily switched to "Off".
"A short circuit was
detected at the
antenna input.
Please check your
antenna."
U59 Abnormal inner temperature
detected 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 remain-
ing 25 minutes, fan motor is also stopped.)
The event is saved in memory as well.
No display
U59 is displayed for 30 minutes.
U61 The unit is carrying out its
recovery process. No display
U71 HDMI incompatible error
(HDCP incompatible) Display this error when the equipment (com- patible with DVI such as TV, amplifier etc.)
connected to the unit by HDMI is incompatible
with HDCP.
*HDCP=High-bandwidth Digital Content Pro-
tection
No display
U72 HDMI connection error
(communication error) 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) U72 display disappears when error
has been solved by Power OFF/ON
of connecting equipment or by
inserting/removing of HDMI cable.
U73 HDMI connection error
(authentication error) When authentication error occurs while the equipments (TV, amplifier etc.) are connected
by HDMI. (or when there is a problem with the
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.
U76 HDMI connection error HDMI cannot be output because you are con-
nected to a model that does not support copy-
right protection.
No display

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U80 ST Microprocessor
Communication Error on
Timer
Bus
Display appears when ST Microprocessor
Communication Error on Timer Bus occurs. No display
U80 is displayed till the [POWER]
key is pressed.
U81 ST Microprocessor
Communication Error on
UART
Display appears when ST Microprocessor
Communication Error on DART occurs. No display
U81 is displayed till the [POWER]
key is pressed.
U88 The unit is carrying out its
recovery process. No display
U99 Hang-up Displayed when communication error has
occurred between Main microprocessor and
Timer microprocessor.
No display
Displayed is left until the [POWER]
key is pressed.
H19 02 Inoperative fan motor When inoperative fan motor is detected after
powered on, the power is turned off automati-
cally.
The event is saved in memory.
No display No display
F00 No error information Initial setting for error code in memory
(Error code Initialization is possible with error
code initialization and main unit initialization.)
No display No display
F58 Drive hardware error When drive unit error is detected, the event is
saved in memory. No display No display
F34 Initialization error when main
microprocessor is started up
for program recording
When initialization error is detected after start-
ing up main microprocessor for program
recording, the power is turned off automati-
cally.
The event is saved in memory.
No display No display
F74 HDMI Device Key Communi-
cation 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.
No display
F75 HDMI 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.
No display
UNSUP-
PORT Unsupported 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.
“This disc is
incompatible.” Display for 5 seconds.
The character indication flows side-
ways.
NO READ Disc read error *A disc is flawed or dirty.
*A poor quality failed to start.
*The track information could not be read.
“Cannot read.
Please check the
disc.”
Error Code Diagnosis contents Description Monitor Display Automatic FL display

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7.1.2. Special Modes Setting
HARD
ERR Drive error The drive detected a hard error. “DVD drive error.” Display for 5 seconds.
The character indication flows side-
ways.
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 automati-
cally. If a display does not disappear, there is
the possibility that defective Digital P.C.B. /
DVD drive.
No display
The character indication flows side-
ways.
PLEASE
WAIT 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.
No display
The character indication flows side-
ways.
UNFOR-
MAT Unformatted disc error You have inserted an unformatted DVD-RAM or DVD-RW that is unformatted or recorded
on other equipment.
The character indication flows side-
ways.
IR ERR IR communication error [IR ERR] is displayed when communication
between Timer microprocessor and IR micro-
processor fails.
No display
No REC Recording is impossible [No REC] is displayed when recording is
impossible due to the defect, dirt or wound of
media.
No display
HDD
ERROR [HDD ERR] is displayed when start up of HDD was
failed.
(Except error of setting of
Power on Stand-by)
a) When normal start up was failed.
b) When start up at HDD boot was failed.
c) When start up from state of P-OFF was
failed.
d) When start up from state of HDD SLEEP
was failed.
[HDD ERR] is displayed when above each
start up of HDD was failed.
*In case b), tray opens automatically and
[HDDERR] is displayed until version up disc is
inserted.
No display
HDD NG Power on Stand-by setting
error [HDD NG] is displayed when power on Stand- by setting of HDD is NG or when HDD which
power on Stand-by is not set to is used.
Please try to replace HDD with genuine HDD
as service parts.
No display
Item FL display Key operation
Mode name Description Front Key
TEST Mode *All the main unit's parameters (include tuner)
are initialized. Press [STOP], [CH UP] and [OPEN/ CLOSE] keys simultaneously for 5
seconds when power is off.
Rating password The audiovisual level setting password is ini-
tialized to “Level 8”. Open the tray, set DRIVE SELECT to DVD, and press [REC] and
[PLAY] simultaneously for 5 sec-
onds.
Error Code Diagnosis contents Description Monitor Display Automatic FL display