Zenith Z-100 Series, User Manual

Page: 121 / 150

Page 5-3
I f you w r o t e d o w n 2 . 0 o r h i g h er , y o u d o n o t
have to replace the ROM and PAL IC's.
If you wr ote down any ROM v e r sion below 2 .0,
you will h ave to replace the ROM and PAL IC's.
•
R efer to Detail 5 -2 A an d l o c ate th e tag on t h e
R efer to Il l u s tration B o ok , Page 22, Pictorial 5-2 fo r
the following steps.
• L ocat e t h e p o w e r s u p p l y a n d l o o k f o r a n u n -
connected cable and p lu g l abeled P6 as show n
i n the inset draw i n g .
I f you f i n d t h i s u n c o n n e cted c a b le, t hen y o u
w ill not have to replace the power supp l y .
I f the power su p pl y d oes not h ave thi s u n c o n -
n ected cable an d p l u g , y o u m u s t r e p l ac e t h e
power supply.
indicated connector.
I f the p ar t n u m b e r o n t h i s t a g i s 1 8 1 -4106 o r
h igher, you w i l l n o t h a v e t o m o d i f y t h e m a i n
circuit board.
If the part n u m ber on t h i s tag is 181-3630, you
will have to modify the main ci r c uit board.
•
R efer back t o t h e R O M v e r s i o n n u m b e r y o u
wrote down on Page VI.
TAG REAR PANEL
CONNECTOR
vL
o oC : ~ ~ ~ . a og
~ ~> a n
f
l]g
S
Detail 5-2A
Connector identification