MikroTik CRS226-24G-2S+IN Setup guide

Repair instruction
Published January 5, 2016


These repair instructions are for NON WARRANTY repairs only!
Please make visual inspection for signs of corrosion
or mechanical damages before starting
Contents
List of Cloud Router Switch CRS226-24G-2S+ series......................................................3
Disassemblin information.................................................................................................4

Block dia ram of Cloud Router Switch CRS210-8G-2S+ series.....................................5
Routerboard does not power on........................................................................................6




Routerboard does not boot...............................................................................................14
 !"# 
$%#"# !!#!%&'( !
## )
Problems with ether ports.................................................................................................16
*!+,,,-*!.*!/0
'('(01
Temperature and Volta e monitor or LCD does not work.............................................21
Console does not work.....................................................................................................22
2 Latest Checking procedure for over voltage damage available at www.mikrotik.com

List of Cloud Router Switch CRS226-24G-2S+ series
CRS226-24G-2S+IN
CRS226-24G-2S+RM
List of Cloud Router Switch CRS226 24G 2S+ series 3

Disassemblin information
Disassembling information
'2#3 4 0 "0 4
20 4 #5"5%6  #!#!%6
 !7.8 4!9 #
'2#7(8 4 6$ "!06$ 
4 Disassembling information

Block dia ram of Cloud Router Switch CRS210-8G-2S+ series
5

Routerboard does not power on
:!5%* 45
1 Find potential problem area
RouterBOARD does not turn on when one of the power is disconnected. check Which voltage is
switched off, Power N (10 – 28V), 3.3V or 1.2V.
6 Routerboard does not power on

2 If Power_IN Failed
;!#5  < 0+"
 ! 0,=>##< 0+?"@A"9 !""
 2
Btry different power supply, if did not help, go to next bullet
Routerboard does not power on 7

Bmeasure if there is short circuit between GND and J1 Pin#1, if do, change C74, if did not
help, go to next bullet
B try change J1 power jack, if does not help, board unrepairable.
 ! 0,=>##' !050"9 !""
 2
Btry change Schottky Diode D1, if does not help, board unrepairable.
8 Routerboard does not power on
6+ 0:5,$ 0* 0& +.),&., ;*  6"%
6+ 0," ,,.,,.C % 6"%
,6+ 0-C! / '.,.$ '#5D#*6"%
6 ;:+ ;:+.,,.,& '#5D#*6"%
6< 0 6.,,,),, '*6"%
6+ 0," '3.,'%.: 5*  6@"%:
6+ 0,EC3' 6>.66C:$,,,C 3#F: !56"%
6 6+ 0))E3G:E3EC3' 6.HA H
' !05,&'F$ $,$ %.@' #  
' !05,&@.&&'F$ 'C.H 'D@CA6@"%:
' !05,&@.&&'F$ ':'%,I ':F6C@*%*6:C@6'&
' !05,&'F$ 'C.:.% ;.:*  6"%
' !05,&@.&&'F$ 'A' H*  66"%:
6 #,J,,KC, 6%$,)A63'* '#' # *#H3
6 #,J,,KC, HCF6C&,)A&,% F#F# #6
6 #,J,,KC, 3FA$,)A%.: :5D#6%
6 #,J,,KC, 6,K,)A,: 35'*6"%-3*6/
6 #,J,,KC, 6KC,)A3' L3M#

;!#5  @*
 ! 0,=>#)"@A"9 !"" 2
Btry change Schottky Diode D5, if does not help, board unrepairable.
Routerboard does not power on 9
' !05,&'F$ $,$ %.@' #  
' !05,&@.&&'F$ 'C.H 'D@CA6@"%:
' !05,&@.&&'F$ ':'%,I ':F6C@*%*6:C@6'&
' !05,&'F$ 'C.:.% ;.:*  6"%
' !05,&@.&&'F$ 'A' H*  66"%:

Bmeasure if there is short circuit on C14, C15, if do, change C14, C15, if did not help, go to
next bullet
Bif does not help, than try change inductor L1002, if did not help, go to next bullet
Btry change J1000,if did not help, board unrepairable.
10 Routerboard does not power on
C+)9E%*E'!:3E*F )&*&H6,,& 63&:'6*C*6@"%:
C+)9E%*E'!:3E*F ;.1>. ;*  6"%
C+)9E%*E'!:3E*F +..$3.&. 3:6
4*# ,,#3,@!"'F"6&"C3' $6;.)F.&4,> $6!*  6"%"
4*# ,,#3,@!'FC3'":NC"6" ':C>.6.>F '3&H3&F*'@H$**%*6:C@6'6@"%:
4*# ,,#3,@!"'F"6&"C3' $6;.)F.& $6!*  6"%"
6 ,,J),,KC, 6%$,AH '#' # *#H3
6 ,,J),,KC, 6%$,AH* '#' # *#H3
6 ,,J,,KC, 6,6,AC&6:I A*F*:*  '&
6 ,,J),KC, ,$,A)%: !#%0#6
6 ,)J,,,, *6+.D6,+ 
6 ,)J,,KC, ,6,+&:& &K6
6 ,,J,,KC, $>A,A, *6@'&H
6 ,,J,,KC, 66,K,A, !#%0#6
6 ,)J,,,, ,6,A&:& &K6
6 ,,J,,KC, 6%$,A66 '#' # *#H3
6 ,,J),,KC, 6,K,A),: 35'*6"%-3*6/
6 ,,J),,KC, 1) !5 
6 ,,J),,KC, 66,AAKC$$$, D6
6 ,,J,,KC, >1) !5 
6 ,,J),,KC, 6KC,A%:' L3M#
6 ,,J),,KC, 6KC,A%&' L3M#
6 ,,J),,KC, 6KC,A%' L3M#

3 If 3V3 Failed
Problem area on top layer:
Btry change Q1, if did not help, go to next bullet.
Btry change Q13 and Q14, if did not help, go to next bullet.
Btry change Q12, if did not help, go to next bullet.
Btry change L3, if did not help, go to next bullet.
Routerboard does not power on 11
:F@'*:.6!,&)@!'@.>C3' &1&HF &4 *  6
:F@'*:.6!,>&,@!'@.> '>  !' # O'6P
:F@'*:.6!,&@!'@.> &@>, &!N@
:F@'*:.6!,&)@!'@.>C3'3
&1&HF.3
&4 *  6
:>,&;3Q,,.),'@:>1 $6K):& R9%
:>,&;3Q,,.),'@:>1 $6K).") K' # 
:,&;3Q,,.),'@:.>1 $6K)).* : !:6%
:>,&;3Q,,.),'@:.>1 $6K).* : !:6%
# ,#3)&>@!19>9),'F:NC $63),.,,F $6!*  6"%"
# ,#3"1&"))!")919)1 'C),.,,F $#*  -:/%O+;FP
# ,#3,J"1&"))!"99),":NC '$),F:,, 0: !6
:F@'*:.6!.,.)&1,@!'@.> 1,,*H 0' # 6%
:F@'*:.6!.,.&,,@!;'@.> &@ &!N@
:F@'*:.6!.,.&1,@!);'@.> &1)HF &4 *  6

Btry change R34, if did not help, go to next bullet.
Btry change U6, if did not help, board unrepairable.
If 1V2 Failed
Problem area on top layer:
Btry change Q10 and Q11, if did not help, go to next bullet.
Btry change C21, C32, if did not help, go to next bullet.
12 Routerboard does not power on
'5 !#$# 06"Q)";S.%)9) C:>,1$HS; C !0: !56
C,CJ, C6,C.,,C% D6
C,CJ, F6C>*R3,C, C@3F6@"%:
C,CJ, 6C6;,$6,C,:A,,J !5 !5" 
C,CJ, C6,C.,,C% D6
:F@'*:.6!,&)@!'@.>C3' &1&HF &4 *  6
:F@'*:.6!,>&,@!'@.> '>  !' # O'6P
:F@'*:.6!,&@!'@.> &@>, &!N@
:F@'*:.6!,&)@!'@.>C3'3
&1&HF.3
&4 *  6
6 5&),#,J>91:3Q),,,!)&@! FC%),F1 F#05: !56@"%:
6 5&),#,J>9>:3Q),,,!)&>@!'6. &'6C*%%)F3,>' @63*F.6@6@C@C&:@
6 5&),#,J>91:3Q)),,,!&@! '*6),FK '5O P
6 5&),#,J>9>:3Q),,,!)&>@!6. 6)FC'HH,>A :*&@*  6
6 5&),#,J>9>:3Q),,,!)&>@! .CC*)F.%> 636@6@C@C&:@

Btry change L1, if did not help, go to next bullet.
Btry change U5, if did not help, go to next bullet.
Routerboard does not power on 13
# ,#3)&>@!19>9),'F:NC $63),.,,F $6!*  6"%"
# ,#3"1&"))!")919)1 'C),.,,F $#*  -:/%O+;FP
# ,#3,J"1&"))!"99),":NC '$),F:,, 0: !6
'5 !#$# 06"Q)";S.%)9) C:>,1$HS; C !0: !56

Routerboard does not boot
52
1. If Netinstall can see the board, but can not install it
Btry change RAM Flash U200, if did not help, go to next bullet
Btry change NAND Flash U401, if did not help, go to next bullet
14 Routerboard does not boot
C'C&F)FC.>,,F9$H&.>,(>)6:NC ;1)HA$.) ;*  6
C'C&F)FC.>,,F9$H&.>,(>)6:5 ;1)HA$.)-5/ ;*  6
C'C&F)FC.>,,F9$H&.>,(>)6 :):IFH.&6
&D&:*63@%@HD6@C@C&:@OP
C'C&F)FC.>,,F9$H&.>,(1,6:NC A:)S+.$6*:,, '#' # *#H3
C'C&F)FC.>,,F9$H&.>,(1)6:5 A:)S+.$6*,,, '#' # *#H3
C'C&F)FC.>,,F9$H&.>,(>)6 )16)R:+) : !56"%
C'C&F)FC.>,,F9$H&.>,(1)6 :):IF*H.&6
&D&:*63@%@HD6@C@C&:@OP
C'C&F)FC.>,,F9$H&.>,(1,6:NC A:)SS.$6*:,, '#' # *#H3
C'C&F)FC.>,,F9$H&.>,(1,6:5 A:)SS.$6*,,, '#' # *#H3
&!H9>:'@.>!,> ,(,6-%/@ 3DI,>H&.:6$ 359' # H$3
&!H9>:'@.>!,> .,(>)6@ &,H;$6* #59'&.H$ !
&!H9>:'@.>!,> .,()6$.:5
A1H,>I,.'6$,,,, '#' # *#H3
&!H9>:'@.>!,> .,(>)6.*66:5
'F%,H,,:1,, ' 
&!H9>:'@.>!,> ,(,6C3'3>
:6)>$H,'3:&,,$S :!
&!H9>:'@.>!,> .,(>)6@ ;1,H'&& ;*  6

Btry change CPU chip U100, if did not help, board unrepairable
f source of problem is U300 or U400board is unrepairable.
2. If Board Leds turn on, board is unreachable throu h LAN or SFP+
ports and console shows no output
Bf there no 1V8 output on L100 try change U102, if did not help, go to next bullet
Bf there no 1V8 output on L100 try change L100, if did not help, go to next bullet
Btry change RAM Flash U200, if did not help, go to next bullet
Btry change NAND Flash U401, if did not help, go to next bullet
Btry change U1300, if did not help, go to next bullet
Btry change CPU chip U100, if did not help, board unrepairable
Routerboard does not boot 15
@"H*(9,H*E3%"%"%(H*' !"&#"6.
S6&>)1.&66
S# &!: !5%
C'C&F)FC.>,,F9$H&.>,(>)6:NC ;1)HA$.) ;*  6
C'C&F)FC.>,,F9$H&.>,(>)6:5 ;1)HA$.)-5/ ;*  6
C'C&F)FC.>,,F9$H&.>,(>)6 :):IFH.&6
&D&:*63@%@HD6@C@C&:@OP
C'C&F)FC.>,,F9$H&.>,(1,6:NC A:)S+.$6*:,, '#' # *#H3
C'C&F)FC.>,,F9$H&.>,(1)6:5 A:)S+.$6*,,, '#' # *#H3
C'C&F)FC.>,,F9$H&.>,(>)6 )16)R:+) : !56"%
C'C&F)FC.>,,F9$H&.>,(1)6 :):IF*H.&6
&D&:*63@%@HD6@C@C&:@OP
C'C&F)FC.>,,F9$H&.>,(1,6:NC A:)SS.$6*:,, '#' # *#H3
C'C&F)FC.>,,F9$H&.>,(1,6:5 A:)SS.$6*,,, '#' # *#H3
&!H9>:'@.>!,> ,(,6-%/@ 3DI,>H&.:6$ 359' # H$3
&!H9>:'@.>!,> .,(>)6@ &,H;$6* #59'&.H$ !
&!H9>:'@.>!,> .,()6$.:5
A1H,>I,.'6$,,,, '#' # *#H3
&!H9>:'@.>!,> .,(>)6.*66:5
'F%,H,,:1,, ' 
&!H9>:'@.>!,> ,(,6C3'3>
:6)>$H,'3:&,,$S :!
&!H9>:'@.>!,> .,(>)6@ ;1,H'&& ;*  6
@"H*(9,H*E3%"%"%(H*' !"&#"6.
S6&>)1.&66
S# &!: !5%
)F3G",,&-0!,,&/;F'.6E6 4
C:>,)H+) C !0: !56
)F3G",,&"'.6E664":'@:..)"3 C:>,,1H+) C !0: !56
)F3G",,&"'.6E664":'@:..)" C:>,,1+) C !0: !56
)F3G,,&'.6.6 4&<#'@:..) &IC1,&H3 &# 6"%
F3G",,&'.6E6 4:'@:..)
:')6C
:9#
# #3,J>&99C3' $6C3>$E3.C.% $6!*  6"%"
# #3)J)&99>>@!C3' 6C3>$E3.C '#:65%
>.!.. !":NC 36)1):.  
>.!.. !
36)1);">
K' # 
6>$:'3:C*H':*C:''@
'36)1);C
:9#
>.!.. !
36)1);"
K' # 

Btry change Y900, if did not help, go to next bullet
Bf source of problem is U300 or U400 board is unrepairable.
Problems with ether ports
1. Ethernet port (Eth1-Eth24) does not work
52
16 Problems with ether ports
65)F3G,,.,(,9) %),, '*: !56
65)F3G),.,()9)'F K)'&.),,,,,,F3R !A56"%
65)F3G,,.,(,9) KA),,,&*,.$A. 'A+<S#06
65)F3G,,.,(,9) S)",.+K'.,.,E,.I.% +# !S#GH3

52
Bf there no 3V3 output on FB1002, FB1102, FB1202 on top layer try change it, if did not
help, go to next bullet
Bf there no 1V2 output on FB1001, FB1101, FB1201 on top layer, try change it, if did not
help, go to next bullet
B try change FB1000, FB1100, FB1200 on bottom layer, if did not help, go to next bullet
B try change R1422 - 1465 on bottom layer, if did not help, go to next bullet
Problems with ether ports 17
$,@!)&,, 6$,D:D3 0: !6
$,@!&,, $%F>'H: F#F# #6
$,@!)&,, 6$,D:D3 0: !6
$,@!&,, $%F>'H: F#F# #6
$,@!)&,, 6$,D:D3 0: !6
$,@!&,, $%F>'H: F#F# #6
C)CJ,, C6,,C.,)C% D6
C)CJ,, C6,,C.,)C% D6
C)CJ,, ,),1 
C)CJ,, *C+.*A)C, 
C)CJ,, C6,>),6' D6
C)CJ,,E,; ;C,K)C,:% ;: !5

B try change C1080, C1083, C1084 on bottom layer, if did not help, go to next bullet
B try change C1430 - C1465 on bottom layer, if did not help, go to next bullet
B try change C1427 - C1469 on bottom layer, if did not help, go to next bullet
B try change D1000, D1001 on top layer, if did not help, go to next bullet
B try change L1002 on top layer, if did not help, go to next bullet
Btry change CPU U100, if did not help, go to next bullet
Btry change U1000, U1100, U1200, if did not help, go to next bullet
Btry change TR1000, TR1001, TR1100, TR1101, TR1200, TR1201, if did not help, go to next
bullet board unrepairable
18 Problems with ether ports
6 ,,J,,KC,, 6%,$,A6>6 '#' # *#H3
6 ,,J,,KC,, &K6
6 ,,J,,KC,, H6F>>C&,A& F#*  
6 ,,J,,KC,, 6,,K,A,: 35'*6"%-3*6/
,,6,A&:&T
6 ,#,JKC,, 6,,)KC,A*:' L3M#
6 ,#,JKC,, *FA,)$,A. :5D#6%
6 ,#,JKC,, 66,,AAKC$$, !#%0#6
6 ,#,JKC,, ,,K,A,6: !#%0#6
6 ,J0KC, F6,A:$,, 0: !6
6 ,J0KC, 6,K,A,: 35'*6"%-3*6/
6 ,J0KC, ,H6,A&:& &K6
6 ,J0KC, ),,) !5 
&5:'),; ! ., %)*'%),&. %.@' #  
&5:' ! ., ',.,I:H %#" 
&5:' ! ., &@R>>,>.,) &!N@
&5:' ! ., %K*':$66.,> F#*  
4*# ,,#3,@!"'F"6&"C3' $6;.)F.&4,> $6!*  6"%"
4*# ,,#3,@!'FC3'":NC"6" ':C>.6.>F '3&H3&F*'@H$**%*6:C@6'6@"%:
4*# ,,#3,@!"'F"6&"C3' $6;.)F.& $6!*  6"%"
@"H*(9,H*E3%"%"%(H*' !"&#"6.
S6&>)1.&66
S# &!: !5%
>H*3D!US'HF "&#"6. S6&>,)1.&%6 S# &!: !5%
>H*3D!US'HF "&#"6. S6&>,)1.%* S# &!: !5%
,E,,E,,,S#*!:3>>1919 '>>, 6!*6@"%:
,E,,E,,,S#*!:3>>191)9,>,C3' %H),1% $!!* 
,E,,E,,,S#*!:3>>1919 &:%.)C & !: !56"%
,E,,E,,,S#*!:3>>1919 H%, & !6*  6@"%:

Btry change J1000, J1100, J1200 on top layer, if did not help, board unrepairable
2. SFP+1 or SFP+2 does not work
52
Btry change U2000 on top layer, if did not help, go to next bullet
Btry change X2300 on top layer, if did not help, go to next bullet
Btry change U2300 on top layer, if did not help, go to next bullet
Problems with ether ports 19
#',H..K&I: 4!&4*6-'
S:)CA$ &F 6 #6-&F66/
65@ ))F3G),%*6%"+,>":E:,,".,(,9) ;K,, '*: !56
65@ ))F3G),%*6%"+,>":E:),".,(,9) +K,6,)),,,, '*: !56
65@ ))F3G)%*6%".,(,9) '@,),6.)),.@K.$$6.F& D06
65@ %*6%))F3G),.,(,69) '6*.)),,:  " 
*6%2##'@6.>C3':NC F6,%*CH @' # O@'P
*6%2##C3' ')%*C :9#
*6%2##'@6.>C3':NC 'D,,*%RH:C F  
C+)9E%*E'!:3E*F C+.,,,,% *  N6%
C+)9E%*E'!:3E*F )&*&H6,,& 63&:'6*C*6@"%:
C+)9E%*E'!:3E*F +..$3.&. 3:6
C+)9E%*E'!:3E*F ;.1>. ;*  6"%
C+)9E%*E'!:3E*F >>,.6>>, 3#9*  6"%

Btry change FB2303 on top layer, if did not help, go to next bullet
Btry change resistor U2304 on top layer, if did not help, go to next bullet
Btry change CPU chip U100, if did not help, go to next bullet
Btry change connectors J2101, J2201 on top layer under SFP cage, if did not help, go to
next bullet
Btry change U2304, if did not help, go to next bullet
Btry change L2301, if did not help, board unrepairable.
20 Problems with ether ports
@),:$1,@!1&>@! ,),: $F&..)).1,,&1,: A6*   
$)@!>&> 3>,C., % !O'P
)F3G",,&-0!,,&/;F'.6E6 4
C:>,)H+) C !0: !56
)F3G",,&"'.6E664":'@:..)"3 C:>,,1H+) C !0: !56
)F3G",,&"'.6E664":'@:..)" C:>,,1+) C !0: !56
)F3G,,&'.6.6 4&<#'@:..) &IC1,&H3 &# 6"%
6 ',,>:NC ',,.. 9   : !5% E9M-IA/%
6 ',,>:NC 1,3,$6:,,,6 63&:'6*C*6@"%:
6 ',,>:NC .,)., 6:A6 *  6"%
6 ',,>:NC .,) % 6"%
6 ',,>:NC +1>,.&,.&, ++ : !56"%:
6 ',,>:NC 6,1., 6!#: !56"%
6 ',,>:NC ,16&&6,&& : !56"%:
6 ',,>:NC ,&,) 9 *6
6 ',,>:NC 66.@'6$$.,.' 35%*%:
6 ',,>:NC ;.'.3.$,1 ;*  6"%
6 ',,>:NC )&.'6$$.,., &%0*  
6 ',,>:NC ,. :*6 45%
@"H*(9,H*E3%"%"%(H*' !"&#"6.
S6&>)1.&66
S# &!: !5%
)F3G",,&"'.6E664":'@:..)"3 C:>,,1H+) C !0: !56
)F3G",,&"'.6E664":'@:..)" C:>,,1+) C !0: !56
)F3G,,&'.6.6 4&<#'@:..) &IC1,&H3 &# 6"%
F3G",,&'.6E6 4:'@:..)
:')6C
:9#
# #3,J>&99C3' $6C3>$E3.C.% $6!*  6"%"
# #3)J)&99>>@!C3' 6C3>$E3.C '#:65%