Tabla de contenido
HP 33440/HP 33449 COMBINED SERVICE MANUAL
GENERAL
For instigation of expansion RAM memory for the HP 33440 (1 Mbyte, P/N 33443; 2 ~yte,
P/N
33444; 4 Mbyte, P/N 33445), see the instructions packaged with the boards. The information
below appears as Appendix E in the herJet
III User's Mmual.
Instigation of the HP 33474B one-megabyte or HP 33475B two-megabyte RAM memory
board Wows the HP 33449 printer's standard memory to be expanded up to an additiond four
megabytes. Any combination of one- or two-megabyte boards – up to a mtimum
of four megabfies
of expanded memory– can be instiled in either of the printer's two memory expansion slots.
Additiond printer memory allows page protection to be implemented, more data to be stored in
the page buffer, more soft fonts to be dotioaded,
and more macros to be defined.
Note
For the HP 33449 printer, use ody revision "B" or later memory boards (that is,
8
HP 33474B and HP33475B).
E the board is to be instiled in a device other than the HP 33449 printer, consult
the manual for that device.
PROTECT
THE
BOARD AND YOURSELF
Since the memory board contains electrid components easily damaged by small amounts of static
electrici~, the following cautions shotid be obsemed:
w If possible, use an antistatic wrist strap and a grounding mat such as those included in the
Electrically Conductive Field Service Grounding Kit (HP
9300-0933).
OR
Before removing the board from its antistatic bag, touch the surface of the bag and any bare
sheet meti surface on the printer. Maintain contact with bare meti surfaces on the printer
frame while handling the board.
To prevent static electriti~ bufldup, avoid activities such as moving about the work area,
especially if it is mrpeted.
Handle the board mre~y
at dl times. Avoid touching board components. Never flex or put
excessive pressure on it.
warning
Hazardous
voltages are present in the printer.
Never
remove any access cover
@
or work near exposed
electrical parts while power is connected.
c-3
Capítulos
Tabla de contenido
