General Problems - Pioneer PDP-425CMX Operating Instructions Manual

General problems

Problem
• No power.
• Unit cannot be operated.
• Remote control does not
operate.
• Picture is cut off.
• Strange color, light color, or
dark, or color misalignment.
• Power is suddenly turned
off.
• No picture.
Problems commonly mistaken as breakdown
Problem
• The screen is displayed in a
small size.
• Letter breakup on screen.
• A sharp sound is sometimes
heard from the cabinet.
• Bright portions of image
appear to be losing intensity.
• Speckles or noise appears on
screen.
• Stripes appear on the screen.
• Sound is heard from inside
the unit.
• Fan speed changes.
• ON (green) indicator doesn't
light.
• Is the power cord disconnected? (page 14)
• Has the MAIN POWER switch been switched on? (page 9)
• External influences such as lightning, static electricity, etc., may cause improper operation. In this
case, operate the unit after first turning the MAIN POWER off/on, or unplugging the power cord
and re-plugging it in after 1 to 2 minutes.
• Are batteries inserted with polarity (+, –) correctly aligned? (page 8)
• Are batteries worn out? (Replace with new batteries.)
• Is any object occluding the remote signal receiver? (page 8)
• Point the remote control unit toward the remote signal receiver when operating (page 8).
• Is the selected screen size correct?
Switch to another screen size (page 20).
• Are [SCREEN] mode adjustments such as picture size made correctly? (pages 20, 21 and 25 to 27)
• Is the POINT ZOOM function being used? (page 21)
• Adjust the picture tone (page 24).
• Is the room too bright?
The picture may look dark in a room that is too bright.
• The unit's internal temperature has increased. (Air vents are blocked.)
Remove any objects blocking vent or clean (page 36).
• Is the [POWER MGT.] function set to [ON]? (page 23)
• Is connection to other components correct? (pages 12 to 13)
• Has setup been done correctly after connection? (pages 16 to 17)
• Is the correct input selected? (page 18)
• Is a non-compatible signal being input? (pages 40 to 42)
• Is the [PICTURE] setting correct? (page 24)
• Is the correct screen size selected? (pages 20, 21, 25 to 27)
• Adjust using [SCREEN] mode on the menu screen (pages 25 to 27).
If there is still no improvement, this unit may be limiting the displayable range. Check the
Computer signal compatibility table (pages 40 to 42).
• Expansion/contraction caused by surrounding temperature change may result in sound being
heard from the cabinet. This is not a malfunction.
• When the video input signal's level is too high, the bright portions may appear to be losing their
intensity.
Increase the adjustment level of the contrast and check the picture (page 24).
• May be caused by radio wave interference from appliances with motors such as hair dryers,
electric vacuum cleaners, electric power drills, ignition systems of cars, motorcycles etc., switch
devises such as thermostats etc., neon signs or electrical discharge from power lines etc.
• May be caused by radio wave mingling from TV station, FM station, amateur radios, public radios
(simplified radios) etc., or a nearby personal computer, TV, or video/audio component.
• A strong electromagnetic field may cause picture distortion and similar problems.
• Normal sound of the cooling fan and internal sliding parts of the Plasma Display panel. Not a
malfunction.
• Fan speed changes automatically in accordance with ambient conditions. Not a malfunction.
• The ON indicator may not light in some cases, depending on the settings performed by the
installer. Consult with your installation technician.
Additional Information
Possible Solution
Possible Solution
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