Removal and Installation Procedures
TDS 520A, 524A, 540A, & 544A Service Manual
6Ć51
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A16 Low Voltage Power Supply
A20 or A30 Display Assembly and Supply Fuse
Front Subpanel
Main Chassis
A16 Low Voltage Power Supply
Assemble equipment and locate modules to be removed: , %/
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!+( 1 ' 1
Orient the oscilloscope: * * &)!##&)&' )& !*) &**&$ !) &-% &% *
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Remove the lowĆvoltage power Supply:
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)+(!% * #&-1,&#* '&-( )+''#/ *& * (( ))!)
!+(1
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)(-) !%!* !% !+( 1 * * $&+%* * )+''#/ *& * $!%
))!)
()' * )+''#/ * * '&!%*) !%!* !% * )$ !+( % #!* *
&( +' &+* & * &)!##&)&' *& &$'#* ($&,#
Reinstallation: & !% (,() &(( )+)*') * (&+ (,()!%
)*' *& (!%)*## * #&-1,&#* '&-( )+''#/ % ) *
&##&-!% '(&+() *& &$'#* * ())$#/
H Top Cover and Board Brackets ' 1
H A11 Processor/Display Board ' 1
H A14 D1 Bus and Power Cables ' 1
H Rear Cover and Cabinet ' 1
Procedures for
InnerĆChassis
Modules
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