Tube%Complement:!!"#$!/01$!*5&3&;$6<!('-!&6!6#&88$-!J&5#<!5J.!0@,"i!&'8*5!5*+$6!
('-!5J.!0@,Qi6!('-!:.*)!2%KYh!8.J$)!5*+$6I!!
Tube%Replacement%and%Tube%Rolling:!!"#$!/01$!*5&3&;$6!5#$!/^"%!5$4#'.3.AH!
J#&4#!.8$)(5$6!5#$!5*+$6!(5!0[>!5#$!#$(5!5#('!.5#$)!5*+$!(783&9&$)6!('-!
6*+6$j*$'53H!5#$!5*+$!3&:$!&6!5H8&4(33H!>!5&7$6!(6!3.'A!(6!.5#$)!(783&9&$)6I!Q'*6$-!
5*+$6!J&33!5H8&4(33H!3(65!01<111!#.*)6!.:!.8$)(5&.'I!
Note:%there%are%very%high%voltages%in%the%Z10e.%When%removing%the%cover%
ensure%the%power%cord%is%disconnected.%%Be%extremely%careful%to%ensure%the%
unit%is%off%for%at%least%5%minutes%to%allow%voltages%to%dissipate.%Avoid%touching%
the%board,%as%high%voltages%may%still%be%present%even%if%the%unit%is%offI%
d^V!?d$J!.3-!65.4=F!5*+$6!()$!(M(&3(+3$!('-!(37.65!(3J(H6!6.*'-!+$55$)!5#('!
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)$93$45!5#$!j*(3&5H!('-!N5.'$O!.:!5#$!5*+$6!&'65(33$-!&'!&5<!6.7$!()$!.:5$'!4#('A&'A!
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(-(85$)!6.4=$56!()$!*5&3&;$-!5.!*6$!$X.5&4!5*+$6!'.5!-&)$453H!$3$45)&4(33H!4.78(5&+3$I!!
"#$!(783&9&$)!#(6!(!8.J$):*3!(*5.+&(6!4&)4*&5)H<!J#&4#!7$('6!5#$!(783&9&$)!
(*5.7(5&4(33H!(-\*656!5.!5#$!.85&7(3!3$M$36!:.)!5#$!5*+$6!('-!'.!(-\*657$'56!()$!
)$j*&)$-I!
T#$'!)$83(4&'A!5#$!5*+$6<!5#$!5J.!3(+$3$-!0@,"i!.'$6!()$!5#$!&'8*5!5*+$6I!"#$H!
7*65!+$!7(54#$-!6.!5#(5!5#$!A(&'!.:!$(4#!4#(''$3!&6!5#$!6(7$!?H.*!4.*3-!8.66&+3H!
4.))$45!:.)!*'7(54#$-!5*+$6!*6&'A!5#$!+(3('4$!4.'5).3FI!!Note,$we$often$ship$from$the$
factory$with$4$7062$tubes$in$the$12AU7$and$the$12AT7$position.$If$you$want$to$change$
one$set$to$12AU7$and$12AT7s,$you$must$remove$all$four$7062s.$The$7062s$cannot$be$
intermixed$with$12AU7s$or$12AT7s.$
"#$!8.J$)!5*+$6!5H8&4(33H!-.!'.5!#(M$!5.!+$!7(54#$-!&'!A(&'I!!!
a.)!5#$!&'8*5!5*+$6<!('H!0@XXX!$j*&M(3$'5!5*+$!4('!+$!*6$-I!!"H8&4(33H!0@,"i6!()$!
*6$-!?5#$H!#(M$!(!A(&'!.:!`1FI!"#$)$!()$!7('H!M()&('56!3&=$!`@106<!WiW06<!WY0h6<!$54I!
5#(5!(33!J.)=!J$33!('-!&:!.'$!6$5!.:!5*+$6!6.*'-6!+$55$)<!*6$!&5I!!
When$removing$the$tubes,$use$a$gentle$rocking$motion$as$you$pull$out$the$tube.$$When$
replacing$in$the$socket,$make$sure$the$pins$are$straight$and$aligned$correctly$with$the$
hole$pattern.$
"*+$6!6.7$5&7$6!-$M$3.8!5*+$!'.&6$I!T&5#!'.!&'8*5!5.!5#$!(783&9&$)!4.''$45$-<!H.*!
6#.*3-!'.5!#$()!('H!65(5&4!.)!)*6#&'A!6.*'-6I!V.7$5&7$6!5*+$6!J&33!7(=$!(!3&553$!
