Sharp VL-SD20U

VL-SD2OU
11
USEFULTIPS (PROBLEMS DIFFER FROM THOSE
FOUND
ON
VHS
OR
8liM
DECKS
BECAUSE THE
SIGNALS
ARE DIGITALLY PROCESSED.)
Camera
(EE
mode)
VCR
(EE mode)
Camera (REC
mode)
VCR
(PB
mode)
Major
circuits
to be
checked
b
CCD
m
Camera circuits (CDS, ADC,
CAM
ENGINE)
*
System
controller (IC701)
l
VIDEO
I/O
(IC1401)
l
VI0
ENGINE
(IC4401)
Camera
(REC mode)
VCR
(PB
mode)
Major circuits to be checked
l
Mechanical
controller
(IC7701)
l
System
controller
(IC701)
l
Zoom (IC251)
l
REC/PB ENGINE (lC452)
Camera
(REC mode)
VCR (PB mode)
Major circuits
to
be
checked
. CAM
ENGINE (IC201)
l
REC/PB ENGINE
(lC452)
Major circuits
to be checked
’
EQ/PLL
(lC3401)
m
Head amplifier (IC301)
l
Dirty or defective
video head
Major
circuits
to be checked
l
EQ/PLL
(IC3401)
l
Head amplifier (IC301)
l
Dirty or defective
video head
JCR (PB mode)
+
color bar
VCR (PB
mode)
+ color bar
Camera (EE mode)
There IS
conslderable
randam block noise
Major circuits to be checked
. CAM ENGINE (IC201)
Major circuits to be checked
Major circuits to be checked
l
Adjustment of the electromagnetic
l
Y data between CAM ENGINE
conversion circuit system.
(IC201) and LCD_DSP (IC801) is
missing.
11-l