Sharp VL-PD3S User Manual

9-20
VL-PD3S/H/E VL-PD3S/H/E
10-1
10. USEFUL TIPS (PROBLEMS DIFFER FROM THOSE FOUND ON VHS OR
8MM DECKS BECAUSE THE SIGNALS ARE DIGITALLY PROCESSED.)
Picture fails
to appear
Blueback fails
to appear.
Picture fails to
appear when tape
recorded on this
unit or another unit
is played back.
(EE OK)
Blueback when
tape recorded on
this unit or another
unit is played back.
(EE OK)
Random block
noise when tape
recorded on this
unit or another
unit is played back.
Lines appear on
the colour bar.
The outline looks
like a Moire pattern.
There is considerable
randam block noise.
Camera (EE mode)
VCR (EE mode)
Camera (REC mode)
VCR (PB mode)
Camera (REC mode)
VCR (PB mode)
Camera (REC mode)
VCR (PB mode)
VCR (PB mode) + colour bar
VCR (PB mode) + colour bar
Camera (EE mode)
Major circuits to be checked
• Zoom (IC251)
Major circuits to be checked
• Adjustment of the electromagnetic
conversion circuit system.
Major circuits to be checked
• Y data between camera DSP (IC201)
and LCD_DECODER (IC802) is
missing.
Major circuits to be checked
• PLL (IC3401)
• ATF (IC3402)
• Head amplifier (IC301)
* Dirty or defective video head
Major circuits to be checked
• PLL (IC3401)
• ATF (IC3402)
• Head amplifier (IC301)
* Dirty or defective video head
Major circuits to be checked
• CCD
• Camera circuits (CDS, ADC, DSP)
• PPW (IC4453)
• LCD_DECODER (IC802)
• System controller (IC701)
• VIO (IC1401)
Major circuits to be checked
• Mechanical controller (IC7701)
• LCD_DECODER (IC802)
• System controller (IC701)
• Zoom (IC251)
• CLOCK GENERATOR (IC451)
Major circuits to be checked
• Zoom (IC251)
• CLOCK GENERATOR (IC451)
Noise bar (Green)
+ random block
noise when tape
recorded on this
unit or another
unit is played back.
or

Sharp VL-PD3S Specifications

General

Brand	Sharp
Model	VL-PD3S
Category	Camcorder
Language	English