Clarion VRX925VD, Service Manual

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VRX925VD
Do not reuse removed chips even when no abnormality
is observed in their appearance. Always replace them
with new ones. (The chip parts include resistors, capaci-
tors, diodes, transistors, etc). The negative pole of tanta-
lum capacitors is highly susceptible to heat, so use spe-
cial care when replacing them and check the operation
afterwards.
6. Cautions in handling flexible PWB
Before working with a soldering iron, make sure that the
iron tip temperature is around 270 . Take care not to
apply the iron tip repeatedly(more than three times)to the
same patterns. Also take care not to apply the tip with
force.
7. Turn the unit OFF during disassembly and parts replace-
ment. Recheck all work before you apply power to the
unit.
8. Cautions in checking that the optical pickup lights up.
The laser is focused on the disc reflection surface through
the lens of the optical pickup. When checking that the
laser optical diode lights up, keep your eyes more than
30cms away from the lens. Prolonged viewing of the la-
ser within 30cms may damage your eyesight.
SYSTEM CHECK
* The confirmation of connected equipment must be per-
formed for this unit only when the wiring connection is
complete and power is turned on to the unit first.When
the power is supplied,"PUSH PWR" appear in the
9. Cautions in handling the optical pickup
The laser diode of the optical pickup can be damaged by
electrostatic charge caused by your clothes and body.
Make sure to avoid electrostatic charges on your clothes
or body, or discharge static electricity before handling the
optical pickup.
9-1. Laser diode
The laser diode terminals are shorted for transpor-
tation in order to prevent electrostatic damage.
After replacement, open the shorted circuit. When
removing the pickup from the mechanism, short
the terminals by soldering them to prevent this
damage.
9-2. Actuator
The actuator has a powerful magnetic circuit. If a
magnetic material is put close to it. Its characteris-
tics will change. Ensure that no foreign substances
enter through the ventilation slots in the cover.
9-3. Cleaning the lens
Dust on the optical lens affects performance. To
clean the lens, apply a small amount of isopropyl
alcohol to lens paper and wipe the lens gently.
ERROR DISPLAYS
If an error occurs,one of the following displays is displayed.Take the measures described below to eliminate the problem.
DVD
player
CD
changer
MD
changer
Error display
ERROR 2
ERROR 3
ERROR 6
ERROR 2
ERROR 3
ERROR 6
ERROR H
EEROR 2
ERROR 3
ERROR 6
Cause
A DVD is caught inside the DVD deck and is not ejected.
A DVD cannot be played due to scratches,etc.
A DVD is loaded upside-down inside the DVD deck and
does not play.
A CD inside the CD changer is not loaded.
A CD inside the CD changer cannot be played due to
scratches,etc.
A CD inside the CD changer cannot be played because
it is loaded upside-down.
Displayed when the temperature in the MD changer is
too high and playback has been stopped automatically.
An MD inside the MD changer is not loaded.
An MD inside the MD changer cannot be played due to
scratches,etc.
An MD inside the MD changer cannot be played because
it is loaded upside-down.
Displayed when a non-recorded MD is loaded in the MD
changer.
Measure
This is a failure of DVD deck's mechanism.
Replace with a non-scratched,non-warped disc.
Eject the disc then reload it properly.
This is a failure of CD changer's mechanism.
Replace with a non-scratched,non-warped disc.
Eject the disc then reload it properly.
Lower the surrounding temperature and wait for a
while to cool off MD changer.
This is a failure of MD changer's mechanism.
Replace with a non-scratched,non-warped disc.
Eject the disc then reload it properly.
Load a pre-recorded MD in the MD changer.
Note:If an error display other than the ones described above appears, press the reset button.
* When the reset button is pressed,frequencies of TV/radio stations,titles,etc. stored in memory are cleared.
TROUBLESHOOTING
Problem
Nothing happens when
buttons are pressd.
Display is not accurate. Cause
The microprocessor has
m a l f u n c t i o n d u e t o
noise,etc. Measure
Turn off the power,then press the RE-
LEASE lever and remove the DCP.Press
the Reset button both of tuner amp unit and
main unit for about 2 seconds with a thin
rod.When the reset button is pressed,turn
off the ACC power.
display.Press the FUNC button,the system check starts
inside the unit.When "COMPLETE" and "PUSH PWR"
appear alternately, press once again the FUNC button.