Problem Diagnostics - ViewSonic pj650 User Manual

Problem Diagnostics

Before requesting repair, please check the following chart. If the situation cannot be corrected, then contact
your dealer.
Phenomenon
The main power source is not
ON.
The electrical power cord is
Power does not
not plugged in.
come ON
The main power source has
been interrupted during opera-
tion, such as by a power out-
age (blackout), etc.
The input changeover settings
are mismatched.
No sound or pic-
The input changeover settings
tures are outputted
are mismatched.
No signal is being inputted.
The electrical wiring to this
unit is not correctly connected.
Pictures are dis-
The volume setting has been
played, but no
set at (or adjusted to) an
sounds are heard
extremely low level.
MUTE is turned on.
The electrical wiring to this
unit is not correctly connected.
Sounds are heard, The brightness setting has
but no pictures are been set at (or adjusted to) an
displayed extremely low level.
The lens cap has not been
removed.
Colors have a faded-
Color depth setting or color
out appearance. tone setting
Color tone is poor
The brightness setting and/or
contrast setting has not been
properly adjusted.
Pictures appear dark The WHISPER mode is the
current setting.
Lamp is approaching the end
of its product lifetime.
Either the FOCUS setting or
Pictures appear
the H PHASE is not properly
blurry
adjusted.
NOTE:
When the interior becomes overheated, power to the unit automatically shuts down. Press the main switch on
T H E T R U S T E D S O U R C E F O R P R O J E C T O R L A M P S A N D A C C E S S O R I E S
the side of the unit to the off position then wait 20 minutes to allow the unit to cool down before any work is
done to the unit.
Cases not involving a
machine defect
Items to be confirmed
Turn on the main power.
Correctly connect the power cord. points.
Be sure to press the "O" (power OFF) side of the main power
switch, and leave this OFF for approximately 20 minutes. After
the unit has sufficiently cooled down, turn ON the power
source.
Select the input signal, and correct the settings.
Correctly connect the connection cord.
Correctly connect the connection cord.
Correctly connect the connection cord.
Adjust the VOLUME setting to a higher level.
Press the MUTE button to toggle the MUTE mode setting..
Correctly connect the connection cord.
Adjust the BRIGHT setting to a brighter level.
Remove the lens cap.
Perform picture adjustments by changing the COLOR BAL R,
the COLOR BAL B, and/or the TINT settings, etc.
Perform picture adjustments by changing the BRIGHT and/or
CONTRAST settings, etc.
Toggle from the WHISPER mode.
Repalce the Lamp Assembly.
Adjust the FOCUS and H PHASE settings.
ViewSonic PJ650/PJ520 37