Analog Devices AD-900 MN3008 Technical manual

Analog Delay
Effect In / Out Tails On/Off
AD-900
D-Time
D-Level
Repeat
AD-900 MN3008 Version
Build Document

AD-900 MN3008 Version Overlay

AD‐900MN3008BOMQUANTITY
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Qty Value Device Parts
1 47pf C24
2 100pf C7, C37
1 330pf C13
3 470pf C4, C34, C42
1 820pf C32
1 .0039uf film C30
1 .01uf “ C11
1 .027uf “ C33
2 .033uf “ C3, C41
1 .039uf “ C31
1 .047uf “ C1
1 .056uf “ C12
1 .1uf tant C25
2 .22uf elect C6, C36
11 1uf elect C5, C9, C15, C16, C19, C20, C21, C22, C23, C28, C35
3 1µf NP elect C2, C17, C27
3 4.7uf elect C38, C39, C40
1 4.7µf NP elect C44
1 10µf NP elect C14
6 10uf elect C8, C10, C18, C26, C29, C43
2 47uf elect C45, C46
1 100µf elect C47
1 10R R34
1 330R R28
1 470R R56
1 1K R1
3 2K R5, R35, R53
3 3.3K R7, R55, R59
4 5.1K R16, R17, R25, R26
1 8.1K R31
19 10K R3, R4, R6, R11, R12, R13, R14, R29, R30, R42, R43, R44, R45, R46, R47, R48, R52,
(10K continued) R54, R58
2 12K R20, R38
1 15K R10
3 33K R8, R9, R27
2 47K R60, R61
3 100K R50, R51, R57
8 130K R18, R19, R22, R23, R36, R37, R40, R41
4 220K R15, R21, R24, R39
1 510K R2
2 1M R33, R64
1 2.2M R32
1 10M R63
1 2K TRIMPOT TR1
8 10K TRIMPOT TR2, TR3, TR4, TR5, TR7, TR8, TR9, TR10
1 20K TRIMPOT TR11
1 200K TRIMPOT TR6
1 10KA POT P3
1 10KC POT P1
1 20KB POT P2

AD‐900MN3008BOMQUANTITY
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1 2SA1015GR Q5
2 2SC1815GR Q6, Q7
4 2SC1815BL Q1, Q2, Q3, Q4
1 1N4001 D1
2 1N4148 D2, D3
1 1N4738A 8.2V zener D4
1 LM78L12ACZ IC9
4 MN3008 IC3, IC4, IC6, IC7
1 MN3101 IC5, IC8
1 RC4558D IC1
1 SA571N IC2
5 CHECK POINTS CP1, CP2, CP3, CP4, CP6
2 ¼” JACKS Enclosed
1 DC JACK
2 3PDT FOOT SWITCH
1 ENCLOSURE 1590XX
2 3MM LED BLUE
3 KNOBS
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AD‐900MN3008BOMdesignations
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C1 .047uf film
C2 1µf NP elect
C3 .033uf film
C4 470p ceramic
C5 1uf elect
C6 .22uf elect
C7 100pf ceramic
C8 10uf elect
C9 1uf elect
C10 10uf elect
C11 .01uf film
C12 .056uf film
C13 330pf ceramic
C14 10µf NP elect
C15 1uf elect
C16 1uf elect
C17 1µf NP elect
C18 10uf elect
C19 1uf elect
C20 1uf elect
C21 1uf elect
C22 1uf elect
C23 1uf elect
C24 47pf ceramic
C25 .1uf tant
C26 10uf elect
C27 1µf NP elect
C28 10uf elect
C29 1uf elect
C30 .0039uf film
C31 .039uf film
C32 820pf ceramic
C33 .027uf film
C34 470pf ceramic
C35 1uf elect
C36 .22uf elect
C37 100pf ceramic
C38 4.7uf elect
C39 4.7uf elect
C40 4.7uf elect
C41 .033uf film
C42 470pf ceramic
C43 10uf elect
C44 4.7µf NP elect
C45 47uf elect
C46 47uf elect
C47 100µf elect
R1 1K
R2 510K
R3 10K
R4 10K
R5 2K
R6 10K
R7 3.3K
R8 33K
R9 33K
R10 15K
R11 10K
R12 10K
R13 10K
R14 10K
R15 220K
R16 5.1K
R17 5.1K
R18 130K
R19 130K
R20 12K
R21 220K
R22 130K
R23 130K
R24 220K
R25 5.1K
R26 5.1K
R27 33K
R28 330R
R29 10K
R30 10K
R31 8.1K (8.2K)
R32 2.2M
R33 1M
R34 10R
R35 2K
R36 130K
R37 130K
R38 12K
R39 220K
R40 130K
R41 130K
R42 10K
R43 10K
R44 10K
R45 10K
R46 10K
R47 10K
R48 10K
R50 100K
R51 100K
R52 10K
R53 2K
R54 10K
R55 3.3K
R56 470R
R57 100K
R58 10K
R59 3.3K
R60 47K
R61 47K
R62 3.3K
R63 10M
R64 1M
TR1 2K (RM-065)
TR2 10K (RM-065)
TR3 10K (RM-065)
TR4 10K (RM-065)
TR5 10K (RM-065)
TR6 200K (RM-065)
TR7 10K (RM-065)
TR8 10K (RM-065)
TR9 10K (RM-065)
TR10 10K (RM-065)
TR11 20K (RM-065)
P1 10KC
P2 20KB
P3 10KA
D1 1N4001
D2 1N4148
D3 1N4148
D4 1N4738A (8.2V zener)
LED1 3MM
LED2 3MM
Q1 2SC1815BL
Q2 2SC1815BL
Q3 2SC1815BL
Q4 2SC1815BL
Q5 2SA1015GR
Q6 2SC1815GR
Q7 2SC1815GR
IC1 RC4558D
IC2 SA571
IC3 MN3008
IC4 MN3008
IC5 MN3101
IC6 MN3008
IC7 MN3008
IC8 MN3101
IC9 LM78L12ACZ
CP1 Keystone 5004 test point
CP2 Keystone 5004 test point
CP3 Keystone 5004 test point
CP4 Keystone 5004 test point
CP5 Keystone 5004 test point
CP6 Keystone 5004 test point
J1 ¼” jack enclosed
J2 ¼” jack enclosed
J3 DC jack
SW1 3P2T footswitch
SW2 3P2T footswitch
Enclosure 1590XX
Knobs (3)

AD-900 MN3008 Version PC Board
Set printer to "No Scaling" or 100%

IN OUT
P2 P3 P1
EFFECT IN/OUTTAILS ON/OFF
REPEAT BLEND D-TIME
321 3 21 3 21
AD-900 OFFBOARD WIRING
971 2 6 22 15 3 10 817 5 20 21 4
19 18

AD‐900AlignmentProcedures(MN3008version)

1.Settingbeforealignment
1)De‐solderandremoveoneleadofR58(10K)tocutthedrysignalline.
2)TurnTR6(level)trimmerCW.Setallothertrimmersto50%.
2.PowerSupply
1)ConnectDCpowersupplytoAD‐900DCinputjack.
3.Clockalignment
Setting:Insertshorted¼”plugintoInputjackandturncontrolsasfollows.
D‐TimeCW,RepeatCCW,D‐LevelCW
1)ConnecttheprobeoffrequencycountertoCP6.(clockline)
2)TurnTR1toalignclockto7KHz±200Hz.
3)TurnD‐TimecontrolCCW.Checkifthefrequencycounterindicates110to
.140KHz.
4.BBDBalancealignment
Setting:Insertshorted¼”plugintoInputjackandturncontrolsasfollows.
D‐TimeCW,RepeatCCW,D‐LevelCW
1)ConnecttheprobeofoscilloscopetoCP1.
Settheoscilloscopetogetthewaveformasshowninfig.1‐a.
2)TurnTR3togetthewaveformasshowninfig.1‐b.
3)ConnecttheprobeofoscilloscopetoCP2.
4)TurnTR5togetthewaveformasshowninfig.1‐b.
5)ConnecttheprobeofoscilloscopetoCP3.
6)TurnTR8togetthewaveformasshowninfig.1‐b.
7)ConnecttheprobeofoscilloscopetoCP4.
8)TurnTR10togetthewaveformasshowninfig.1‐b.

AD‐900AlignmentProcedures(MN3008version)


4.BBDBiasalignment
Setting:Input400Hz/0dBusinewave(0dBu=.78VRMS)intoAD‐900inputgenerator.
withaudiogeneratorandturncontrolsasfollows.
D‐TimeCCW,RepeatCCW,D‐LevelCW
1)ConnecttheprobeofoscilloscopetoCP1.
2)TurnTR2andalignsinewavetobesymmetricalattopandbottom
TurnD‐TimecontrolCW,checkifsinewaveissymmetrical.
Fig.2‐a&2‐bdepictsinewaveoutofsymmetry.
Fig.2‐cdepictssinewavesymmetrical(D‐TimeCCW)
Fig.2‐ddepictssinewavesymmetrical(D‐TimeCW)
3)ConnecttheprobeofoscilloscopetoCP2.
4)TurnTR4andperformthesamealignmentasmentionedabove.
5)ConnecttheprobeofoscilloscopetoCP3.
6)TurnTR7andperformthesamealignmentasmentionedabove.
7)ConnecttheprobeofoscilloscopetoCP4.
8)TurnTR9andperformthesamealignmentasmentionedabove.
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

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AD‐900AlignmentProcedures(MN3008version)

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6.Levelalignment
Setting:Input400Hz/‐20dBusinewave(‐20dBu=.078VRMS)intoAD‐900inputgenera
withaudiogeneratorandturncontrolsasfollows.
D‐TimeCW,RepeatCCW,D‐LevelCW
1)Connectlevelmetertooutputjack.
2)TurnTR6andalignoutputlevelto‐20dBu.
3)Alternate:TurnTR6andalignoutputlevelfor.078VRMS.
7.Connectionofdrysignalline
SolderR58(10K)whichhadbeenremovedin1.1)andconnectdrysignal.
8.Soundcheck
1)Repeatalignment
Setting:D‐TimeCW,Repeat3:00,D‐LevelCW
InputguitarsignalandalignTR11.Repeatsshouldlast10timesbefore
becominbecominginaudibleonthe11thtime.Checkifself‐oscillateswhenturningturning
RepeatcontrolfullyCW.
2)Checkthefunctionofeachcontrol.
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
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

AD‐900AlignmentProcedures(MN3008version)

 
Fig.1aFig.1b

 
Fig.2aFig.2b
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 
Fig.2cFig.2d

Analog Delay
Effect In / Out Tails On/Off
AD-900
D-Time
D-Level
Repeat
AD-900 MN3008 Version
Drilling Template

Analog Delay
Effect In / Out Tails On/Off
AD-900
D-Time
D-Level
Repeat
Input
Output
18 VDC
AD-900 MN3008 Version
Enclosure Artwork