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M490T
Type module
Category INPUT-PRE-AMPS
Try it simulator & front panel · download package (zip)
Earliest dated evidence 1978|11 — estimate from a dated variant
Evidence from M490
Confidence family
Variants M490, M490A, M490B, M490C, M490D, M490E, M490F, M490G, M490H, M490J, M490K, M490L, M490M, M490N
Folder Modules/INPUT-PRE-AMPS/M490T

Front panel

Pinout & connections

No page of its own numbers M490T's contacts: these are its variant M490D's, drawn faded — not confirmed for M490T.

CONNECTOR P1 · 1–4NUMBERED SIDE · AS ON M490DP1-1: LEFT PGRM 1 audio bus / pair · confidence variant (from a variant) rto-144 · M490D.rto144.json, p. 11LEFT PGRM 1 +BUSP1-2: LEFT PGRM 1 audio bus / pair · confidence variant (from a variant) rto-144 · M490D.rto144.json, p. 12LEFT PGRM 1 −BUSP1-3: RIGHT PGRM 1 audio bus / pair · confidence variant (from a variant) rto-144 · M490D.rto144.json, p. 13RIGHT PGRM 1 +BUSP1-4: RIGHT PGRM 1 audio bus / pair · confidence variant (from a variant) rto-144 · M490D.rto144.json, p. 14RIGHT PGRM 1 −BUS
CONNECTOR P2 · A–YLETTERED SIDE · AS ON M490DP2-A: MIC IN A audio in · confidence variant (from a variant) rto-144 · M490D.rto144.json, p. 1AMIC IN A −INBP2-C: MIC IN B audio in · confidence variant (from a variant) rto-144 · M490D.rto144.json, p. 1CMIC IN B −INDEP2-F: INSERT SEND audio out · confidence variant (from a variant) rto-144 · M490D.rto144.json, p. 1FINSERT SEND −OUTP2-H: INSERT RETURN audio in · confidence variant (from a variant) rto-144 · M490D.rto144.json, p. 1HINSERT RETURN −INJKP2-L: signal not read used on a schematic, signal not read · confidence variant (from a variant) schematic · 1978 - M490D - schem-490-02-005.pdf, p. 1 “Pz-L <”Lsignal not read?MP2-N: signal not read used on a schematic, signal not read · confidence variant (from a variant) schematic · 1978 - M490D - schem-490-02-005.pdf, p. 1 “EXt Ch P2-N on”Nsignal not read?PP2-R: signal not read used on a schematic, signal not read · confidence variant (from a variant) schematic · 1978 - M490D - schem-490-02-005.pdf, p. 1 “Pz - R”Rsignal not read?STP2-U: signal not read used on a schematic, signal not read · confidence variant (from a variant) schematic · 1978 - M490D - schem-490-02-005.pdf, p. 1 “P2-U”Usignal not read?VWXYCONNECTOR P2 · 1–21NUMBERED SIDE · AS ON M490DP2-1: MIC IN A audio in · confidence variant (from a variant) rto-144 · M490D.rto144.json, p. 11MIC IN A +IN2P2-3: MIC IN B audio in · confidence variant (from a variant) rto-144 · M490D.rto144.json, p. 13MIC IN B +IN45P2-6: INSERT SEND audio out · confidence variant (from a variant) rto-144 · M490D.rto144.json, p. 16INSERT SEND +OUTP2-7: INSERT RETURN audio in · confidence variant (from a variant) rto-144 · M490D.rto144.json, p. 17INSERT RETURN +IN891011P2-12: signal not read used on a schematic, signal not read · confidence variant (from a variant) schematic · 1978 - M490D - schem-490-02-005.pdf, p. 1 “EXt ch Pz - 12 OfF”12signal not read?1314P2-15: signal not read used on a schematic, signal not read · confidence variant (from a variant) schematic · 1978 - M490D - schem-490-02-005.pdf, p. 1 “25v P2-15,W”15signal not read?16P2-17: signal not read used on a schematic, signal not read · confidence variant (from a variant) schematic · 1978 - M490D - schem-490-02-005.pdf, p. 1 “P2-17”17signal not read?18P2-19: -25 V power rail · confidence variant (from a variant) rto-144 · M490D.rto144.json, p. 119-25 VPWRP2-20: COMMON ground / common · confidence variant (from a variant) rto-144 · M490D.rto144.json, p. 120COMMONGNDP2-21: +25 V power rail · confidence variant (from a variant) rto-144 · M490D.rto144.json, p. 121+25 VPWR
CONNECTOR (NOT NAMED) · 1–25NUMBERED SIDE · AS ON M490D1: PGM 1 OUT, LEFT audio out · confidence variant (from a variant) table · 1978 - M490D - pinout-490-04-005 (2).pdf, p. 11PGM 1 OUT, LEFTOUT2: PGM 1 OUT, LEFT audio out · confidence variant (from a variant) table · 1978 - M490D - pinout-490-04-005 (2).pdf, p. 12PGM 1 OUT, LEFTOUT3: PGM 1 OUT, RIGHT audio out · confidence variant (from a variant) table · 1978 - M490D - pinout-490-04-005 (2).pdf, p. 13PGM 1 OUT, RIGHTOUT4: PGM 1 OUT, RIGHT audio out · confidence variant (from a variant) table · 1978 - M490D - pinout-490-04-005 (2).pdf, p. 14PGM 1 OUT, RIGHTOUT5: PGM 2 OUT, LEFT audio out · confidence variant (from a variant) table · 1978 - M490D - pinout-490-04-005 (2).pdf, p. 15PGM 2 OUT, LEFTOUT6: PGM 2 OUT, LEFT audio out · confidence variant (from a variant) table · 1978 - M490D - pinout-490-04-005 (2).pdf, p. 16PGM 2 OUT, LEFTOUT7: PGM 2 OUT, RIGHT audio out · confidence variant (from a variant) table · 1978 - M490D - pinout-490-04-005 (2).pdf, p. 17PGM 2 OUT, RIGHTOUT8: PGM 2 OUT, RIGHT audio out · confidence variant (from a variant) table · 1978 - M490D - pinout-490-04-005 (2).pdf, p. 18PGM 2 OUT, RIGHTOUT9: SHIELO named, kind not clear · confidence variant (from a variant) table · 1978 - M490D - pinout-490-04-005 (2).pdf, p. 19SHIELO10: NC not / internally connected · confidence variant (from a variant) table · 1978 - M490D - pinout-490-04-005 (2).pdf, p. 110NCNC11: AUX OUT, LEFT audio out · confidence variant (from a variant) table · 1978 - M490D - pinout-490-04-005 (2).pdf, p. 111AUX OUT, LEFTOUT12: AUX OUT, LEFT audio out · confidence variant (from a variant) table · 1978 - M490D - pinout-490-04-005 (2).pdf, p. 112AUX OUT, LEFTOUT13: AUX OUT, RIGHT audio out · confidence variant (from a variant) table · 1978 - M490D - pinout-490-04-005 (2).pdf, p. 113AUX OUT, RIGHTOUT14: AUX OUT, RIGHT audio out · confidence variant (from a variant) table · 1978 - M490D - pinout-490-04-005 (2).pdf, p. 114AUX OUT, RIGHTOUT15: CUE OUT, LEFT audio out · confidence variant (from a variant) table · 1978 - M490D - pinout-490-04-005 (2).pdf, p. 115CUE OUT, LEFTOUT16: CUE OUT, LEFT audio out · confidence variant (from a variant) table · 1978 - M490D - pinout-490-04-005 (2).pdf, p. 116CUE OUT, LEFTOUT17: CUE OUT, RIGHT audio out · confidence variant (from a variant) table · 1978 - M490D - pinout-490-04-005 (2).pdf, p. 117CUE OUT, RIGHTOUT18: CUE OUT, RIGHT audio out · confidence variant (from a variant) table · 1978 - M490D - pinout-490-04-005 (2).pdf, p. 118CUE OUT, RIGHTOUT19: NC not / internally connected · confidence variant (from a variant) table · 1978 - M490D - pinout-490-04-005 (2).pdf, p. 119NCNC20: NC not / internally connected · confidence variant (from a variant) table · 1978 - M490D - pinout-490-04-005 (2).pdf, p. 120NCNC21: NC not / internally connected · confidence variant (from a variant) table · 1978 - M490D - pinout-490-04-005 (2).pdf, p. 121NCNC22: CHASSIS ground / common · confidence variant (from a variant) table · 1978 - M490D - pinout-490-04-005.pdf, p. 122CHASSISGND232425: V COM ground / common · confidence variant (from a variant) table · 1978 - M490D - pinout-490-04-005.pdf, p. 125V COMGND
KEYIN audio inOUT audio outBUS audio bus / pairPWR power railGND ground / common· named, kind not clearNC not / internally connected? used on a schematic, signal not readvariant
M490Tpins as on its variant M490D (not confirmed for M490T)-25 V P2-19+25 V P2-21M490TMIC IN AP2-A·P2-1MIC IN BP2-C·P2-3INSERT RETURNP2-H·P2-7PGM 1 OUT, LEFT1·2PGM 1 OUT, RIGHT3·4PGM 2 OUT, LEFT5·6PGM 2 OUT, RIGHT7·8AUX OUT, LEFT11·12AUX OUT, RIGHT13·14CUE OUT, LEFT15·16CUE OUT, RIGHT17·18LEFT PGRM 1P1-1·P1-2RIGHT PGRM 1P1-3·P1-4INSERT SENDP2-F·P2-6CHASSIS 22V COM 25COMMON P2-20

pinout (SVG) · connections (SVG) · pins (JSON)

Pin evidence — 45 contacts
PinSignalKindConfidenceRead fromSource
1PGM 1 OUT, LEFTaudio outvarianttable1978 - M490D - pinout-490-04-005 (2).pdf, p. 1
2PGM 1 OUT, LEFTaudio outvarianttable1978 - M490D - pinout-490-04-005 (2).pdf, p. 1
3PGM 1 OUT, RIGHTaudio outvarianttable1978 - M490D - pinout-490-04-005 (2).pdf, p. 1
4PGM 1 OUT, RIGHTaudio outvarianttable1978 - M490D - pinout-490-04-005 (2).pdf, p. 1
5PGM 2 OUT, LEFTaudio outvarianttable1978 - M490D - pinout-490-04-005 (2).pdf, p. 1
6PGM 2 OUT, LEFTaudio outvarianttable1978 - M490D - pinout-490-04-005 (2).pdf, p. 1
7PGM 2 OUT, RIGHTaudio outvarianttable1978 - M490D - pinout-490-04-005 (2).pdf, p. 1
8PGM 2 OUT, RIGHTaudio outvarianttable1978 - M490D - pinout-490-04-005 (2).pdf, p. 1
9SHIELOnamed, kind not clearvarianttable1978 - M490D - pinout-490-04-005 (2).pdf, p. 1
10NCnot / internally connectedvarianttable1978 - M490D - pinout-490-04-005 (2).pdf, p. 1
11AUX OUT, LEFTaudio outvarianttable1978 - M490D - pinout-490-04-005 (2).pdf, p. 1
12AUX OUT, LEFTaudio outvarianttable1978 - M490D - pinout-490-04-005 (2).pdf, p. 1
13AUX OUT, RIGHTaudio outvarianttable1978 - M490D - pinout-490-04-005 (2).pdf, p. 1
14AUX OUT, RIGHTaudio outvarianttable1978 - M490D - pinout-490-04-005 (2).pdf, p. 1
15CUE OUT, LEFTaudio outvarianttable1978 - M490D - pinout-490-04-005 (2).pdf, p. 1
16CUE OUT, LEFTaudio outvarianttable1978 - M490D - pinout-490-04-005 (2).pdf, p. 1
17CUE OUT, RIGHTaudio outvarianttable1978 - M490D - pinout-490-04-005 (2).pdf, p. 1
18CUE OUT, RIGHTaudio outvarianttable1978 - M490D - pinout-490-04-005 (2).pdf, p. 1
19NCnot / internally connectedvarianttable1978 - M490D - pinout-490-04-005 (2).pdf, p. 1
20NCnot / internally connectedvarianttable1978 - M490D - pinout-490-04-005 (2).pdf, p. 1
21NCnot / internally connectedvarianttable1978 - M490D - pinout-490-04-005 (2).pdf, p. 1
22CHASSISground / commonvarianttable1978 - M490D - pinout-490-04-005.pdf, p. 1
25V COMground / commonvarianttable1978 - M490D - pinout-490-04-005.pdf, p. 1
P1-1LEFT PGRM 1audio bus / pairvariantrto-144M490D.rto144.json, p. 1
P1-2LEFT PGRM 1audio bus / pairvariantrto-144M490D.rto144.json, p. 1
P1-3RIGHT PGRM 1audio bus / pairvariantrto-144M490D.rto144.json, p. 1
P1-4RIGHT PGRM 1audio bus / pairvariantrto-144M490D.rto144.json, p. 1
P2-AMIC IN Aaudio invariantrto-144M490D.rto144.json, p. 1
P2-1MIC IN Aaudio invariantrto-144M490D.rto144.json, p. 1
P2-CMIC IN Baudio invariantrto-144M490D.rto144.json, p. 1
P2-3MIC IN Baudio invariantrto-144M490D.rto144.json, p. 1
P2-FINSERT SENDaudio outvariantrto-144M490D.rto144.json, p. 1
P2-6INSERT SENDaudio outvariantrto-144M490D.rto144.json, p. 1
P2-HINSERT RETURNaudio invariantrto-144M490D.rto144.json, p. 1
P2-7INSERT RETURNaudio invariantrto-144M490D.rto144.json, p. 1
P2-L—used on a schematic, signal not readvariantschematic1978 - M490D - schem-490-02-005.pdf, p. 1
“Pz-L <”
P2-N—used on a schematic, signal not readvariantschematic1978 - M490D - schem-490-02-005.pdf, p. 1
“EXt Ch P2-N on”
P2-12—used on a schematic, signal not readvariantschematic1978 - M490D - schem-490-02-005.pdf, p. 1
“EXt ch Pz - 12 OfF”
P2-R—used on a schematic, signal not readvariantschematic1978 - M490D - schem-490-02-005.pdf, p. 1
“Pz - R”
P2-15—used on a schematic, signal not readvariantschematic1978 - M490D - schem-490-02-005.pdf, p. 1
“25v P2-15,W”
P2-U—used on a schematic, signal not readvariantschematic1978 - M490D - schem-490-02-005.pdf, p. 1
“P2-U”
P2-17—used on a schematic, signal not readvariantschematic1978 - M490D - schem-490-02-005.pdf, p. 1
“P2-17”
P2-19-25 Vpower railvariantrto-144M490D.rto144.json, p. 1
P2-20COMMONground / commonvariantrto-144M490D.rto144.json, p. 1
P2-21+25 Vpower railvariantrto-144M490D.rto144.json, p. 1

Pictures

1978 - M490T - 490-02-025.jpg1978 - M490T - 490-04-026 - DSI MAY USED FOR IGNA PURPOSES FROM CMOTE.jpg1978 - M490T - 490-06-029 - UED JIV ZCIA.jpg

Photos & scans (3)

Year File
1978|11 1978 - M490T - 490-02-025.jpg note
1978|11 1978 - M490T - 490-04-026 - DSI MAY USED FOR IGNA PURPOSES FROM CMOTE.jpg note
1978|11 1978 - M490T - 490-06-029 - UED JIV ZCIA.jpg note

Drawings (3)

Each scan with its trace laid over it: the slider runs from the scan to the vector drawing. Click one to see it large and save it as SVG, DXF, KiCad, PDF or PowerPoint.

490-02-025 · schematic · 1978|11
1978 - M490T - 490-02-025viewer
490-06-029 · component layout · 1978|11
Ued Jiv Zciaviewer
490-04-026 · connector layout · 1978|11
Dsi May Used For Igna Purposes From Cmoteviewer

Read from the drawing title blocks.

Drawing Title Date Drawn by Checked by Iss. Source
490-02-025 file
490-04-026 Dsi May Used For Igna Purposes From Cmote file
490-06-029 Ued Jiv Zcia file
An archive by Anthony Peter Kuzub · WBSps.Kuzub.com · WBSps.ca
generated from M490T.md