Sony BVH-2000, Руководство по эксплуатации и обслуживанию

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(5-7-8. SV-43 Board)
OUTPUT PORT
The HARD CPUs output port consists ofIClP, ICIQ and IC6-
0, that are addressed as "5080H/5081H/5082H (WR mode)".
The address "5080H" (IC6-0) outputs the signals such as the
hardware reset signal, the HARD OUT signal that tells the
HARD CPU's operating condition, and the READY SV signal
telling the system control that the servo system is operating
normally.
The address "5081H" (ICIQ) outputs the drive signals such as
the mini-tension
arm, threading motor, IP motor, pinch roller,
brake solenoid and head hour meter. Drive signals are output to
the IT board.
The address ~~5082H"(ICIP)
outputs the servo data that are
measured in the test mode to be displayed on the 7-segment
LED, and the tape running meter drive signal.
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Address 5080H
D5:
SPARE
Not used
D4: SV 02
This signal is output to the SY-80 board's input port, but
is not used
D3: SV READY
This signal informs the HOST and HARD CPUs
operating conditions to the system control system. As
long as the both CPUs operate normally, "I" is output
D2: HARD RESET
"0" is output when the system is initializing, or when the
machine is alarm conditions. This "0" signal inhibits
operation of mechanism such as motor or solenoid.
Dl: HARD OUT
This signal informs the HARD CPUs operating conditions
to the HOST CPU. As long .as the HARD CPU operates
normally, "1" is output.
DO: INT TIME)
During when the HOST CPU is processing the interrupt
routine, DO is set to "I". The time required for interrupt
routine can be measured
at TPI3.
SERVO SYSTEM
Address 5081H
D5: MINI ARM
This signal is used for controlling the mini tension arm.
"1" is output when the machine operates in the VAR,
JOG or less than ±3x NORMAL SHUTTLE modes so
that the shock of tension is prevented.
04: THREAD CONT
This signal controls the threading motor for the movable
guide. When D4 goes "0", the movable guide operates.
D3: PINCH SOL
This signal is used for driving the pinch solenoid.
The pinch roller is pressed against the capstan when the
"0" is ou tpu t.
D2: BRAKE SOL
This is a drive signal for the brake solenoid of the supply
and the take-up reels. The brakes are released when the
"0" is output.
DI: IP MOTOR DRIVE
This is a drive' signal for the impedance
roller motor.
The motor rotates when the "0" is output
DO: HEAD HOURS
This is a driving signal for the HEAD HOURS meter.
During when the drum motor rotates, the "0" is output
Address 5082H
D5: TAPE HOURS
This is a drive signal for the TAPE RUNNIG
meter so
that the "0/1" ratio will be changed in accordance with
the tape speed.
04: 7-SEG LED SEL
This is a display select signal for the 7-segment LED. The
LSD is displayed when "0" is output and the MSD is
displayed when "1" is output.
D3/D2/DI/DO: LED DATA
There are decoding display data, decoded by IC5C, for
the 7-segment LED.
5-7-26
BVH-2000(U/C)/PS/PM
BVH-2180(U/C)/PS/PM