Zenith Z-100 Series, Руководство пользователя

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Page 4-5
MOdiGCatiOnS
C AUTION : Be careful no t to d am age the neck of th e
CRT when you perform the following steps. If the
C RT becomes damaged, a v i o l en t i m p l o s io n c o u l d
N OTE: Because th e C o m p u te r m a y n o t r e q u i r e a l l
of the following modifications, you will occasionally
b e given a l t e r n at iv e d i r e c t i o ns . B e s u r e t o f o l l o w
t hese directions careful l y .
DISASSEMBLY
R efer to I l l u s t r atio n B o ok , P age 5, Pi c t o r ial 4- 3 f o r
the follow in g steps.
• Use a f l a t - b l a ded screwdr i v er to loosen the 6-32
x 1 - ' / 8"screws at AG , A H , A I , an d A J . L o osen
t he screws onl y u n t i l t h e y d i s e ngage from t h e
c hassis. It i s n o t n e c e ssary t o c o m p l e t el y r e -
m ove th ese screws. N O T E : Y o u w i l l h a v e t o
i nsert t h e s c r e w d r i v e r b l a d e d o w n i n t o t h e
square holes in the slides to gain access to these
bly and set it aside.
the video circuit board.
result.
•
Carefully unplug the signal/power cable from
• Car ef u l l y l i f t u p o n t h e d r i v e / v i d eo s ubassem-
screws.
• Rem ov e t h e ¹ 8 x 1- '/ 2 " h ex h e ad s heet me tal
screw at AK an d set it aside. You w i l l r e i n s tall
this screw later.
•
Unplug the power cable from each disk drive
R efer to I l l u s t r atio n B o ok , P age 6, P i c t o r ial 4- 4 f o r
the follow in g steps.
•
Carefully lift up on the drive/video subassem-
b ly and r e p o s i t io n i t t o w a r d t h e f r o n t o f k e y -
b oard as far as the cables will al l o w .
I f you determ i ne d t hat yo u m u s t r e p l ace the p o w e r
supply and/or modify the main circuit board, pro-
ceed to "Removing the Power Supply."
I f you d o n o t h a v e t o r e p l ace th e p o w e r s u p p l y o r
modify the main circuit board, skip "Removing the
Power Supply" and proceed directly to "Disassem-
bly Continu ed ,"
R EM O V I N G TH E PO W E R S U P P L Y
NOTE: Perform the fol l o w i n g steps only if you deter-
mined that you must replace the power supply and/
or modify the main cir c uit board.
R efer to I l l u s t r ation B o ok , Page 7, Pi c t o r ial 4- 5 f o r
the follow in g steps.
• Rem ov e t h e ¹ 6 x >/~ " sheet metal screws from
l ocations A A , A B , A C , a n d A D a n d s e t t h e m
aside.
(plugs P4 and P5).
•
C arefully u n p l u g th e f l a t c able from th e Z - 2 0 7
• R em ov e t h e 6 - 3 2 x V~ " s c r e ws a nd ¹ 6 l oc k -
w ashers f ro m l o c a t i on s A E a n d A F a n d s e t
them aside,
circuit board.