Verbatim Floobydust
H-28 Verbatim Owner's Manual
Main Board VMP-5A
u JB1 - configures sockets U3 and U4 for the size of EPROM chip
used.
Placement of shorting block:
l left hand two pins- 2 meg EPROMs (for future use)
l right hand two pins- 1meg and 512k EPROMs (factory
default)
u JB2 - configures sockets U1 and U2 for the size of RAM chip
used.
Placement of shorting block:
l left hand two pins- 1 meg or 256k RAMs (factory default)
l right hand two pins- 2 meg RAMs (for future use)
u JB3 - RESET. Short these two pins together for about 2 seconds
(a screwdriver works fine) to clear the programming back to
factory defaults.
u JB4 - Local Alarm Relay/ Line Seizure Relay output. Upper pin is
ground, lower pin supplies 5vdc on alarm to activate the relay.
u JB5 - SYSTEM RESET. Short these two pins together for about
two seconds to reset the system hardware.
u JB6 - factory use only
u JB7 - factory use only
u JB8 - configures jack AJ-1 to be either an audio output jack or a
12vdc power input jack.
Placement of shorting block:
l upper two pins makes AJ-1 an audio output jack, for using
an external speaker or connecting to another audio system.
l lower two pins makes AJ-1 a 12vdc power input jack for
powering the unit from an external source.
u JB9 - factory use only
H.11 Jumper Configurations
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