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2-2. VIDEO CIRCUIT RELAY JIG
'<
2-2-1. TEST EQUIPMENT
AND STANDARDS
REQUIRED
Color Bar Signal Generator
PAL Color bar signei with 100% white level (EBU color bar signet)
Oscilloscope
Oscilloscope
Probe
t
Vertical
sensitivity
:5 mV/DIV,
external
trigger
Bandwidth
: more than 10 MHz
Input capacity
: less than 25 pF (10:1 )
less than 40 pF (1 :1)
Covering
frequency
: DC-40
MHZ(IO:1)
DC -30
MHz (1:1)
I Digital Voltmeter
I DC range
I
Alignment
Tape
VHJ-0008
or VHJ-O023
: SP mode, color bar, 1 kHz
(Color bar signal waveform
is described
below. Refer to Fig. 2-2-1)
Relay Jig
VHJ-0066
(VHR-850
& VHR-870)
: 7-wire flat cable for VP-1
PWB assembly
VHJ-0067
(VHR-890)
: 12-wire
flat cable for VP-1
PWB assembly
'u
ALIGNMENT
TAPE COLOR BAR SIGNAL
'H.Sync Signal
Color
bar signal
waveform
(VHJ-0008)
Fig. 2-2-1
'pv-Tcp(75%)m
w
Color
bar pattern
(VHJ-0008)
on monitor
TV
Fig. 2-2-2
RELAY JIG
Connect
the flat cable end from the cylinder
assembly
to the
VP-1
PWB
assembly
using the relay jig to provide
simple
repairing
of the VP-1
PWB assembly,
as shown
in Fig.2-2-3.
Further,
when adjusting
the VP-1
PWB assembly,
be sure to
make contact
an end of shield case with bracket
of the VP-1
PWB assembly
to maintain
the shield effect. If the VP-1
PWB
assembly
does not contact, there is insufficient
ground and no
proper play back image can be obtained.
RJ-MP4HNIE3
VP-1 PWB Assembly+
s n
Fig. 2-2-3
.
.+. . ,-,..-.,
L
–11–
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