Adding Memory - Lexicon JAMMAN Mode D'emploi

JamMan can be upgraded from 8 sec-
onds of memory, to 32 seconds, simply by
installing four 1M x 4 bit (100 nanoseconds)
ZIP ICs.
These can be purchased through your
Lexicon dealer, direct from Lexicon, or from
computer electronics suppliers. If you pur-
chase the memory upgrade from Lexicon,
the ICs will be labeled as shown below.
Manufacturer Label
Motorola MCM54400AZ
Hitachi HM514400AZP
NEC D424400V
Fujitsu MB814400
Mitsubishi M5M44400L
Micron MT4C4001JZ
Before performing the memory upgrade procedure, disconnect JamMan from its power supply.
English
Installing the memory upgrade is not dif-
ficult, but care should be taken in handling
ICs, as well as in disassembling and reas-
sembling your unit. ICs can be damaged by
static electricity, and incorrect insertion can
damage both the IC and your unit. Observe
the following precautions:
• Keep parts in original containers until ready for
use.
• Avoid plastic, vinyl or styrofoam in the work
area.
• Discharge personal static before handling.
• Minimize handling; avoid touching IC pins.
• Do not slide ICs over any surface.
• Insert ICs with the proper orientation.
• Watch for bent pins on ICs.
22

Adding Memory

ICs must be inserted with the
beveled corner facing the rear
of the unit.
Installing four 1M x 4 bit ZIP ICs increases
JamMan memory from 8 to 32 seconds.