Page 5-8
•
P osition th e ch assis so the front i s t o w ar d y o u
as shown in the Pictorial .
•
B y l i f ti n g t h e i n n e r p a r t o f t h e c a r d p u l l e r s ,
carefully u n p l u g the Z-207 control ler card from
t he mai n c i r c u i t b o a r d . T h e n s l i d e i t u p a n d
o ut o f t h e c a r d c a ge, Set t h e c o n t r o l le r c a r d
a side temporari l y .
•
U se an IC pul ler as shown i n th e i n set draw i n g
to remove the ROM and PAL IC's from the main
c ircuit board. Set these IC's aside; they w il l n o t
be needed again,
•
Use t h e s ame procedure to remove any other
cards that may be in the Comput er.
Remove the four 4-40 x >/4"
screws at locations
P , R, S, an d T w h i c h s e c ur e th e c ar d c age t o
the mai n c i r c u i t b o ar d an d c h a s sis. Set t h ese
s crews inside temporari l y .
•
Install the new ROM (HE 444-87-5) on the main
c ircuit bo ard at U 1 90. M ak e sure you p o s i t i o n
t he pin 1 en d o f th e IC t o w ar d th e i n d e x m a r k
on the circuit board.
•
Similarly , i n s t all th e ne w PA L ( H E 4 4 4 - 129-1)
on the main circuit board at U161.
•
Remo v e t h e t w o ¹ 6 x <
t ~ " s heet metal s crews
at locations U an d V w h i c h h o l d t h e c ard cage
to the rear of the chassis. Set these screws aside
t emporaril y .
•
L ocate programm in g j u m p e r J102 on th e m a i n
c ircuit board. T hen u n p l u g i t f r o m t h e 0 p o s i -
t ion and reinstall it in the 1 position .
Main Circuit Board."
NOTES:
1 .
I f y o u d e t e r m i n e d t h a t y o u m u s t m o d i f y t h e
m ain circuit board, proceed to "M o d i f y i n g th e
•
L if t t h e c a r d c a g e up a n d r e m o v e i t f r o m t h e
c hassis. Set the card cage aside temporari l y ,
Refer to Ill u stration Bo ok, Page 27, Pictorial 5-10 for
the follow in g steps.
•
Remove the nine 4-40 x >l~" screws at locations
A, B, C, D, E, F, G, H, and J which secure the
m ain c i r c u i t b o a r d t o t h e c h a s s is. Se t t h e s e
s crews aside temporari l y .
2 .
I f y o u d o n o t h av e to m o d i f y th e m ai n c i r c u i t
b oard, s k i p
" M o d i f y i n g t h e M a i n Ci r c u i t
Board" and proceed directly to "Reinstalling
the Video Logic Circuit Board."
•
R emove the t h ree l on g spacers at l o c ati ons K ,
L , and N w h i c h s e c ure th e m ai n c i r c u i t b o a r d
at the chassis. Set these spacers aside temporar-
ily,
MODIFYING THE M AI N C I R CUIT BOA RD
NOTE: Perform the fol l o w i n g steps only if you deter-
mined that you must mod ify the main cir c uit board.
R efer to Il l u s tration B o ok , Page 26, Pictorial 5-9 f o r
the following steps.
•
Unplug the power supply cables from plugs
P 101 and P 10 2 o n t h e m a i n c i r c u i t b o a r d , i f
this has not already been done.
•
C arefully l i f t th e m ai n c i r c ui t board up an d ou t
of the chassis and p o si t io n i t c o m p o n e n t -side-
down as sh ow n i n I l l u s t r a t ion B o ok , Page 28,
Pictorial 5-11.
Содержание Z-100 Series
Страница 2: ...Z 10 eri es User s Manual Winchester u lcm ent I aa systems...
Страница 68: ...Z 217 WINCHESTER DISK CONTROLLER Product Specification Zenith Data Systems November 30 198 2 D Langer...
Страница 84: ...7 4 q 1 a m...
Страница 88: ......
Страница 90: ...Page 2 2...
Страница 118: ...Page 4 26...
Страница 148: ......