Sony BVH-2000, Operation And Maintenance Manual

Page: 291 / 505

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(5-4-6. VM-01 Board)
2. Monitor Selector (ICI-8)
This switch circuit functions to output the signals designated by
the front panel
PICTURE MONITOR and WAVEFORM
MONITOR selector switches from the VIDEO MONITOR and
WFM MONITOR OUTPUT connectors.
3. Sync Separator (ICI5,16)
As with the sync separator circuit on the MD board, this circuit
reproduces the DC component of the video signal in which this
component has been lost or in which there are fluctuations
caused by noise.
3
This board is housed inside the upper drum and it is connzurcd
by the amplifiers
for the PLAY heads and by the STRAIN
GAUGE for the DT head also functions to
signals from the RIP heads and erase heads to the RP board.
HEAD DRUM
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VIDEO SIGNAL SYSTEM
4. Pedestal Clamper (ICI4,I7,I8,19,Q3,5,6)
This circuit holds the pedestal level of the VIDEO MONITOR
OUTPUT signal to OV.
5. Character Inserter (IC9,10,19,20,QI,2,4)
When the "CHARACTER GATE" signal from CN657-4 is set
low, the "CHARACTER SIG" signal from CN657-6 can be
inserted into the VIDEO MONITOR OUTPUT signal.
In addition to the DR-I3 board, the head drum contains the
DR-14/15/16 boards and SL-07/08/09 boards which are all used
for purposes.
CN272
CN271
o
CN291
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DRE 1 8 ST GAUGE
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FROM
DO BOARD
5-4-10 BVH-2000( U/C)/PS/PM
BVH-2180(U/C)/PS/PM