Sanyo VHR-730 Service Manual page 11

2-2. VIDEO CIRCUIT RELAY JIG
2-2-1. TEST EQUIPMENT AND STANDARDS REQUIRED
Color Bar Signal Generator
Oscilloscope
Oscilloscope Probe
Digital Voltmeter
Alignment Tape
Relay Jig
PAL Color bar signet with 100% white level (EBU color bar signel)
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:I)
DC - 30 MHz(I:I)
DC range
VHJ-0008 or VHJ-O023
: SP mode, color bar, 1 kHz
(Color bar signal waveform is described below. Refer to Fig. 2-2-1)
VHJ-0065
:
5-wire flat cable for VP-1 PWB assembly
ALIGNMENT TAPE COLOR BAR SIGNAL
WPV-TCS
'H.Sync
Signal
Color bar signal waveform (VHJ-0008)
Fig. 2-2-1
WPV.TCP
lI!I!l
.=
;j~dgi
(75%)
vu
1
Owo
White
Black
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-MP41GSY
VP-l PWBAssernblv+K<
Relay Jig
VHJ-0065
Flat Cable~'~
/(?
/~
Cylinder
c
Assemblv
/!
Fig. 2-2-3
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