Jumper Settings - NEC Advanced Personal Computer System Reference Manual

Processor PCB
2-46
2.10 JUMPER SETTINGS
The Processor PCB has four jumpers (TMl, TM2, TM3, and TM4). TMI is not
related to system functions, but to battery replacement. To prevent harm to the
diode when replacing the battery, TM 1 must be removed.
To adapt the APC interface for a Centronics-type or aDA printer, set TM2, TM3,'
and TM4 as instructed in Figure 2-29.
CJ
FS2s9l
D o g
~M!
C
CJ~
0
eN!
@CJD 0
c:::F
O D D 0 0 0 2
c::J
U
c::J~
c::J
D
CJ-=D~-
c::J DO
c::J
0
Q§J
~Doo
DO
D
D D
c=JD
c::::J
0 D O D c=J
0 0 0 0 0 0 0
DDDDDDCJ
c::JODDDOCJ
c::J2!
D g CJ
~
c:J
DODOO=D
c::JD 0 0 0 Cl
c::JCl 0 0 0 Cl 0
OODDDClO
G9PFBU
Figure 2-29 Processor PCB Jumper Settings
FOR CENTRONICS·TYPE
PRINTER INTERFACE
TM2
[J]
TM3
Q]
m
(SHORTED)
FOR ODA·TYPE
PRINTER INTERFACE
TM2
~
TM3
[D
I 2
TM4
[;]
(SHORTED)