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40
VL-PD3AS/AH/AE
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 color 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) + color bar
VCR (PB mode) + color bar
Camera (EE mode)
Major circuits to be checked
•
CAM ENGINE (IC201)
Major circuits to be checked
•
Adjustment of the electromagnetic
conversion circuit system.
Major circuits to be checked
•
Y data between CAM ENGINE
(IC201) and VIO ENGINE (IC4401)
is missing.
Major circuits to be checked
•
EQ/PLL (IC3401)
•
Head amplifier (IC301)
*
Dirty or defective video head
Major circuits to be checked
•
EQ/PLL (IC3401)
•
Head amplifier (IC301)
*
Dirty or defective video head
Major circuits to be checked
•
CCD
•
Camera circuits (CDS, ADC,
CAM ENGINE)
•
CAMERA/SYSTEM MiCON (IC701)
•
VIDEO I/O (IC1401)
•
VIO ENGINE (IC4401)
Major circuits to be checked
•
Mechanical control Micon (IC7701)
•
CAMERA/SYSTEM MiCON (IC701)
•
CAM ENGINE (IC201)
•
REC/PB ENGINE (IC452)
Major circuits to be checked
•
CAM ENGINE (IC201)
•
REC/PB ENGINE (IC452)
Noise bar (Green)
+ random block
noise when tape
recorded on this
unit or another
unit is played back.
or
Summary of Contents for VL-PD3AE
Page 3: ...3 VL PD3AS AH AE 2 PART NAMES For details on the use of each control ...
Page 81: ...109 VL PD3AS AH AE MAIN1 PWB Wiring Side SIDE A A B C D E F G H I J 1 2 3 4 5 6 7 8 9 10 ...
Page 83: ...111 VL PD3AS AH AE MAIN1 PWB Wiring Side SIDE B A B C D E F G H I J 1 2 3 4 5 6 7 8 9 10 ...
Page 85: ...113 VL PD3AS AH AE MAIN2 PWB Wiring Side SIDE A A B C D E F G H I J 1 2 3 4 5 6 7 8 9 10 ...
Page 87: ...115 VL PD3AS AH AE MAIN2 PWB Wiring Side SIDE B A B C D E F G H I J 1 2 3 4 5 6 7 8 9 10 ...
Page 94: ...VL PD3AS AH AE 122 M E M O ...