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
Figure 1
.
1.1.2. Leakage current hot check
(See Figure 1 .)
1. Plug the AC cord directly into the AC outlet. Do not use an
isolation transformer for this check.
2. Connect a 1.5kΩ, 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.
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 measuremen ts.
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
measuremen t 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.
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 semiconduct or-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-propell ed chemicals. These can generate electrical charges sufficient to damage ES devices.
6. Do not remove a replacement ES device from its protective package until immediately before you are ready to install it. (Most
replacement ES devices are packaged with leads electrically shorted together by conductive foam, aluminum foil or comparable
conductive material).
7. Immediately before removing the protective material from the leads of a replacement ES device, touch the protective material
to the chassis or circuit assembly into which the device will be installed.
Caution
Be sure no power is applied to the chassis or circuit, and observe all other safety precautions.
8. Minimize bodily motions when handling unpackaged replacement ES devices. (Otherwise hamless motion such as the brushing
together of your clothes fabric or the lifting of your foot from a carpeted floor can generate static electricity sufficient to damage
an ES device).
7 Taking out the Disc from RAM-Drive Unit when the Disc
cannot be ejected by OPEN/CLOSE button
7.1. Forcible Disc Eject
7.1.1. When the power can be turned off.
1. Turn off the power and press [STOP] [CH UP] keys on the front panel simultaneous ly for 5 seconds.
7.1.2. 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 simultaneous ly for 5 seconds.
7.2. 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. Remove the Front Panel.
4. Remove 4 screws and Upper Base Unit from DVD-RAM Drive.
5. Take out the disc and put the Opener Roller on fully position for direction of Arrow.
6. Put the Upper Base Unit so that the Opener Roller is inserted into the groove.
7. Check Opener Roller is seen through the Opener position Checking Hole, and tighten 4 screws.
1. Press [REC], [CH UP] and [OPEN/CLOSE] simultaneous ly for 5 seconds when P-off.
FL Display:
*After finishing display “(7). Factor of Drive Error occurring”, press [0] [2] ~[1] [9] keys of the Remote Controller so that
19 memories can be displayed as maximum.
2. Press [4] [2] keys of remote controller.
Example of FL Display:
(1) Error Number is displayed for 5 seconds.
(2) Time when the error has occurred is displayed for 5 seconds.
(3) Last Drive Error (1/2) is displayed for 5 seconds.
(4) Last Drive Error (2/2) is displayed for 5 seconds.
12
(5) Error occurring Disc type is displayed for 5 seconds.
Self-Diagnosis Function provides information for errors to service personnel by “Self-Diagno sis 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 CodeDiagnosis contentsDescriptionMonitor DisplayAutomatic FL display
U30Remote control code errorDisplay appears when main unit and remote
U59Abnormal inner temperature
U99Hang-upDisplayed when communication error has
F00No error informationInitial setting for error code in memory
F58Drive hardware errorWhen drive unit error is detected, the event is
F34Initialization error when main
UNSUPPORTUnsupported disc error*An unsupported format disc was played,
NO READ Disc read error*A disc is flawed or dirty.
HARD
ERR
detected
microprocessor is started up
for program recording
Drive errorThe drive detected a hard error.“DVD drive error.” Display for 5 seconds.
controller codes are not matched.
Display appears when the drive temperature
exceeds 70°C.
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.
occurred between Main microprocessor and
Timer microprocessor.
(Error code Initialization is possible with error
code initialization and main unit initialization.)
saved in memory.
When initialization error is detected after
starting up main microprocessor for program
recording,thepoweristurnedoff
automatically.
The event is saved in memory.
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
“*” is remote controller code of the
main unit.
Display for 5 seconds.
No display
“U59 is displayed for 30 minutes.
No display
Displayedisleftuntilthe
[POWER] key is pressed.
No displayNo display
No displayNo display
No displayNo display
“Thisdiscis
incompatible.”
Display for 5 seconds.
“Cannotread.
Please check the
disc.”
SELF
CHECK
Full
Program
UNFORMATUnformatted disc errorYou have inserted an unformatted DVD-RAM
Restoration operationSince the power cord fell out during a power
failure or operation, it is under restoration
operation.
*It willOK, if a displaydisappears
automatically. If a display does not disappear,
there is the possibility that defective Digital
P.C.B. / RAM drive.
16 programs are already set.16 programs are already set.No display
or DVD-RW that is unformatted or recorded
on other equipment.
Unit is in termination processUnit 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
9.2. Special Modes Setting
ItemFL displayKey operation
Mode nameDescriptionFront Key
TEST Mode*All the main unit´s parameters (include tuner)
are initialized.
Rating passwordThe audiovisual level setting password is
initialized to “Level 8”.
Service ModeSetting every kind of modes for servicing.
*Details are described in “9.3. ServiceMode”.
Forced disc ejectRemoving 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.
Thedisplaybeforeexecution
leaves.
Press [STOP],[CH UP] and
[OPEN/CLOSE]keys
simultaneously for five seconds
when power is off.
Open the tray, and press [REC] and
[PLAY]simultaneouslyfor5
seconds.
NOTE:
Drive should be selected to DVD.
When the power is off, press [CH
UP], [OPEN/CLOSE] and [REC]
keys simultaneously for 5 seconds.
When the power is off, press
[STOP]and[CHUP]keys
simultaneously for 5 seconds.
Child lock/unlockSet or release “Child Lock”.Press [ENTER] and [RETURN] by
NTSC/PAL system select To switch PAL/NTSC alternately.Thedisplaybeforeexecution
Forced power- offWhen 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.
AgingPerform sequence of modes as * Aging
Description shown below continually.
leaves.
Display in P-off mode.Press [Power] key over than 10
Display following the then mode.When the power is ON, press
remote controllersimultaneously
until [X-HOLD] is displayed.
While the power is on (E-E mode),
press [STOP] and [OPEN/CLOSE]
simultaneously for 5 seconds.
seconds.
[STOP],[POWER]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.
Service mode setting: While the power is off, press REC, CH UP and OPEN / CLOSE simultaneous ly for five seconds.
ItemFL displayKey operation
Mode nameDescription(Remote controller key)
Release ItemsItem of Service Mode executing is cancelled.Press [0] [0] or [Return] in service
mode.
Error Code DisplayLast Error Code of U/H/F held by Timer is
displayed on FL.
*Detailsare describedin“9.1. Self-
Diagnosis Functions”.
ROM Version DisplayRegion code, MAIN firm version, TIMER firm
version and DRIVE firmware versions are
displayed on FL for five seconds per each
version in order, but ROM version will be left
displayed.
White Picture OutputWhite 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] [1] in service mode
Press [0] [2] in service mode
‘’*’’ are version displays.
*Initial mode is “Interlace”.Press [1] [1] in service mode.
Switch Interlace/ProgressivePress [1] [4] in White Picture Output
mode.
*I/P are switched alternately.
Magenta Picture Output Magenta picture is output with Component
RTSC Return in XP
(A & V)
I/P SwitchSwitch Interlace and Progressive in EE mode.
Output from AV Decoder.
*Magenta picture
(Saturation rate: 100%)
*It is enable to switch Interlace/Progressive by
“I/P switch: [1] [4]”
AV1 input signal is encoded (XP), decoded
(XP) and output decoded signal to external
without DISC recording and DISC playback.
*Initial setting is “Interlace”.
*This command is effective during executing
“White Picture Output”, “Magenta Picture
Output” and “RTSC Return in XP (A & V)”
modes.
*Initial mode is “Interlace”.Press [1] [2] in service mode.
Switch Interlace/ProgressivePress [1] [4] in Magenta Picture
Initial mode: EE2/ Interlace/ XP/
Audio 48kHz
Switch Interlace/ProgressivePress [1] [4] in RTSC Return XP
Audio 44.1 kHz/ 48 kHz SwitchPress [2] [4] in RTSC Return XP
Initial mode is Interlace
Switch Interlace/Progressive
Output mode.
*I/P are switched alternately.
Press [1] [3] in service mode.
mode.
*I/P are switched alternately.
mode.
*48 kHz / 44.1 kHz are switched
alternately.
Press [1] [4] in I/P Switch mode.
*I/P are switched alternately.