Sanyo VHR-310 Service Manual page 10

v114285(N) 3/4
2-2-3. ADJUSTMENT RELAY JIG
Connect the Flat cable end from the Cylinder Ass'y to the
VP-1 PWB Ass'y using the Relay jig to provide simple
repairing and adjustment of the VP-1 PWB Ass'y, as shown in
Fig.2.2.7. Further, when adjusting theVP-l PWBAss'y, be sure
to make contact an end of Shield case with Bracket of the
VP-1 PWB Ass'y to maintain the shield effect. If the VP-1
PWB Ass'y does not contact, there is insufficient ground and
no proper play back image can be obtained.
WPV-TP4/lR
BAss'y
\-
Uu
Fig. 2.2.7
.
Self-recording means "Record the video signal and play
back the just-recorded portion".
Connect the monitor TVto the VIDEO OUTPUT terminal,
before making following adjustments.
2-2-4. AGC LEVEL ADJ.
Measuring Point Measuring Equipment ADJ. Condtiion
TPI02
Color bar generator
E-E mode
Oscilloscope
(101 probe)
ADJ. Location
ADJ. Value
VRI02 (AGC)
0.5 Vp-p * 0.025Vp-p
1. Connect the color bar generator to the VIDEO INPUT
terminal.
2. AdjustVR 102(AGC) for 0,5VP-P* 0.025Vp-p asshown in
Fig. 2.2.8.
WPV-AGC
100% White
A
0.5 Vp-p * 0.025 Vp-p
Lr
1
1
9
Fig. 2.2.8
2-2-5. PB-Y LEVEL ADJ.
-—
Measuring Point Measuring Equipment ADJ. Condition
TP1OI Oscilloscope
PIAY mode
Test tape
(VHJ4XX18 or
VHJ-0023)
ADJ.
Location
ADJ. Valw
VR1OI (PB-Y) 1 Vpp * 0.05 Vp-p
1. Play back a test tape.
2. Adjust VRIOI (PB-Y) for the video luminance si9nal level
of
1Vp-p f 0.05 Vp-p.
(Refer to Fig. 2.2.9)
wPv-PBY
100% White
1 Vp-p k
I
~u"
Iu
u
1-
,,,
-1
Fig. 2.2.9
Measuring Point Measuring Equipment ADJ. Condition
TPI03 Color bar generator
REC mode
Frequency counter
ADJ. Location AlXl. Value
VR103(CAR)
3.83 MHz &0.05 Mtiz
.—
1. Connect the color bar generator to the VIDEO INPUT '-
terminal.
2. Afier removing the first color bar signal input from the
video inputterminal, immediately adjust VR103 (CAR) so
that the frequency becomes 3.83MHz * 0.05 MHz.
–lo–