User manual

Corrective Maintenance
CSA 803A Service Manual
6Ć69
Firmware Integrated Circuits (Dual InĆLine Package" ICs)
+( ),4/9$4( 5 $4( .1&$6(' 10 )174 5(2$4$6( %1$4'5 5(( ,*74( < )14
6+(  .1&$6,105 10 ($&+ &,4&7,6 %1$4' +( %1$4'5 $0' 6+(,4 4(52(&6,8(
),4/9$4( " $4(
H A5 Time Base/Controller board = ,/( $5( 41&(5514 " !
! ! $0' !
H A15 MMU board = ,52.$; 41&(5514 " ! $0' !
H A18 Memory board = $,0 41&(5514 " ! ! ! !
! ! ! $0' !
H A28 Acquisition MPU board = &37,5,6,10 41&(5514 " !
.. 1) 6+( 5 .,56(' $%18( $4( 14'(4(' %; $ 5,0*.( (-6410,: 2$46 07/%(4 $5
$ 5,0*.( ),4/9$4( -,6 Each IC cannot be ordered separately 14 6+(
 6+( ),4/9$4( -,6 07/%(4 ,5 <<##
1 4(/18( $0' 4(2.$&( 6+( ),4/9$4( 5 ,0 ;174   )1..19 6+(5(
241&('74(5
WARNING
Dangerous shock hazards may be exposed when the instrument
covers are removed. Before proceeding, ensure that the CSA 803A
PRINCIPAL POWER SWITCH is in the OFF position. Then, disconĆ
nect the instrument from the power source. Disassembly should
only be attempted by qualified service personnel.
CAUTION
To prevent static damage to the instrument, observe all the special
precautions mentioned under StaticĆSensitive Classification in this
section.
Firmware Upgrade Procedure
1 72*4$'( 14 4(2.$&( ;174 ),4/9$4( 5 &1/2.(6( 6+( )1..19,0* 56(25
ăStep 1:ă4(2$4( 6+( ,05647/(06 )14 6+( ),4/9$4( 72*4$'( 241&('74( $5
)1..195
H (6 6+(  " "  61  $0' 4(/18( 6+( 219(4
&14'