Zenith Z-100 Series, Руководство пользователя

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Page 5-9
C arefully i n s p ect th e c i r c u i t b o ard fo r th e f o l l o w i n g
most commonly m ade errors:
• U n sol d e r e d conn e cti o n s .
Refer to Ill u stration Bo ok, Page 28, Pictorial 5-11 for
the following steps.
• R ef er t o t h e i n s et d ra w i n g on t he P ic t o r i al a nd
carefull y c u t t h e f o i l t r a c e a t U 1 6 8 p i n 11
e xactly as shown . Use a ut i l i t y k n i f e or si m i l a r
t ool. Be careful not to cut any other foi l .
6'/2" wire
8'/2" wire
• P rep ar e t h e f o l l o w i n g t h r e e w i r e s . F i r s t c u t
each wire to th e p r o per l ength and r e m ove ap-
proximately 7/()" o f insul atio n f r o m e a c h e n d .
Then t w i s t t o gether th e s m al l s t r a nd s at each
w ire en d a n d m e l t a s m a l l a m o u n t o f s o l d e r
on each wire end to hold the strands together.
• P oo r s o l d e r conn e ctio n s ,
• Sol d e r b r i d g es between foil patterns.
• Prot r u d i ng leads which could touch together.
Refer to Illu stration B o ok , Page 29, Pictorial 5-12 for
the following steps.
• Posi t i o n t h e m a in c i r c u i t b oa rd ins i de the chas-
s is and l i n e u p t h e s t u d s o n t h e c h a ssis w i t h
the mount in g ho les in the circuit board. Be sure
t he connectors al ong th e b ack e dge of th e c i r -
cuit board p r o t r u d e t h r o ug h t h ei r c o r r espond-
ing holes in the rear of the chassis.
2 '/2 wi r e
to )/()
•
C ut the bare ends of th e t h ree p r epared w i r e s
NOTE: Refer to the I l l u s t r at io n B o ok , Page 1, "Parts
P ictorial" w he n a step calls for hardw ar e.
• Do n ot t i g h t e n h a r d w a r e i n t h e n e xt t wo s t e ps
• L o o k ca r e f u l l y a t t h e P i c t o r i al a nd s o l d er o n e
e nd of th e 6 7 /z" wire to U 1 5 2 p i n 1 . U s e o n l y
as much solder and heat as necessary to ensure
a good connection. Cut off any excess bare wire
end.
until told to do so.
• U se n i n e 4 - 4 0 x 3/4" screws to secure the main
c ircuit b o ar d t o t h e c h a ssis at l o c a t i on s A , B ,
C,D,E,F,G, H , and J.
• S ol d e r t h e r e m a i n i n g e nd o f t h e 6
7 /2" wire t o
U130 pin 8.
• U se th r e e l o n g s p a cers to secure the m a in c i r -
cuit board to th e c h assis at locations K, L, and
N.
• S im i l ar l y , s o l d e r o n e e n d o f t h e 2
7 /2" wire t o
U130 pin 9.
• T i gh t e n t h e h a r d w a re i n s talled in t he p r e v i o u s
two steps.
• S ol d er t h e r e m a i n i n g e nd o f t h e 2 ' / 2
8
w ire t o
the indicated foil at R104.
10.
• S ol d e r o n e e n d o f t h e 8 ' / 2
8
w ire to U 1 3 0 p i n
• Si m i l ar l y , s o l d er t he remain i ng end of t he 8 '/2"
• I f yo u d i d n o t r e m o v e t h e p o w e r s u p p l y f r o m
the chassis, push the 10-pin socket that has the
b lue, yel l ow , an d r e d w i r e s , c o m i n g f r o m t h e
p ower supp ly , o nt o p l u g P102 on the m ain c i r -
cuit board. Be sure the slotted side of the socket
is up (away from the cir c uit board),
wire to U225 pin 3,
• P osi ti o n th e th r e e w i r e s a g a i n st t h e c i r c u i t • S im i l ar l y , p u s h t h e 1 0 - p in s o c k et t h at h as t he
r ed and b l ac k w i r e s , c o m i n g f r o m t h e p o w e r
s upply , o n t o p l u g P 1 0 1 o n t h e m a i n c i r c u i t
b oard. Be s u r e t h e s l o t te d s i d e o f t h e s o c k e t
1S Up.
b oard as shown in the Pictorial .
( INC N S S )
2 0
1/
1/ 3/
1
1 / 8 3 / 8 8 / 8 7 / 8
Q
8
1
( CM ) 2 3 8 8 8 7
8
8 10 11 12 13
1 • 18 18 17