M703D — Intercom Preamplifier
| Type | module |
| Category | COMMUNICATION |
| Try it | simulator & front panel · download package (zip) |
| Earliest dated evidence | 1995|28 — manual issue date |
| Evidence | "Issue 14-318 Wagdy Saleh DEC 12, 1995" in WBSps Engineering from H drive-20261018T013433Z-1-002/WBSps Engineering from H drive/WBSps - M7XX/M703D/TANGO/14-318.PCB |
| Confidence | high |
| All years found | 1995|28, 1996|29 |
| Variants | M703, M703B |
| Folder | Modules/COMMUNICATION/M703D |
Front panel
Pinout & connections
No page of its own numbers M703D's contacts: these are its variant M703B's, drawn faded — not confirmed for M703D.
pinout (SVG) · connections (SVG) · pins (JSON)
Pin evidence — 9 contacts
| Pin | Signal | Kind | Confidence | Read from | Source |
|---|---|---|---|---|---|
| B | NC | not / internally connected | variant | drawing rows | 1980 - M703B - A 703-04-003 - M703B INTERCOM …, p. 1 “row 2 of the drawing, left of the pin column” |
| 2 | NC | not / internally connected | variant | drawing rows | 1980 - M703B - A 703-04-003 - M703B INTERCOM …, p. 1 “row 2 of the drawing, right of the pin column” |
| E | NC | not / internally connected | variant | drawing rows | 1980 - M703B - A 703-04-003 - M703B INTERCOM …, p. 1 “row 5 of the drawing, left of the pin column” |
| 10 | SHIELD | ground / common | variant | drawing rows | 1980 - M703B - A 703-04-003 - M703B INTERCOM …, p. 1 “row 10 of the drawing, right of the pin column” |
| P | NC | not / internally connected | variant | drawing rows | 1980 - M703B - A 703-04-003 - M703B INTERCOM …, p. 1 “row 13 of the drawing, left of the pin column” |
| 13 | NC | not / internally connected | variant | drawing rows | 1980 - M703B - A 703-04-003 - M703B INTERCOM …, p. 1 “row 13 of the drawing, right of the pin column” |
| T | NC | not / internally connected | variant | drawing rows | 1980 - M703B - A 703-04-003 - M703B INTERCOM …, p. 1 “row 16 of the drawing, left of the pin column” |
| 16 | NC | not / internally connected | variant | drawing rows | 1980 - M703B - A 703-04-003 - M703B INTERCOM …, p. 1 “row 16 of the drawing, right of the pin column” |
| 21 | NC | not / internally connected | variant | drawing rows | 1980 - M703B - A 703-04-003 - M703B INTERCOM …, p. 1 “row 21 of the drawing, right of the pin column” |
Pictures
14-318-top.svg
14-318-bottom.svg
Dates found in the documents
| Year | Kind | Text | File |
|---|---|---|---|
| 1995|28 | manual issue date | Issue 14-318 Wagdy Saleh DEC 12, 1995 |
1995 - M703D - 703-06-004 - OUTPUT AMPLIFIER COMPONENT LAYOUT.pcb |
| 1995|28 | month & year | March 8, 1995 |
1995 - M703D - file.dsn |
Drawings & design files (5)
| Year | File | |
|---|---|---|
| 1995|28 | 1995 - M703D - 703-06-004 - OUTPUT AMPLIFIER COMPONENT LAYOUT.pcb | note |
| 1995|28 | 1995 - M703D - file.dsn | note |
| 1996|29 | 1996 - M703D - AMF701D.dwg | note |
| 1996|29 | 1996 - M703D - FM701D.dwg | note |
| 1996|29 | 1996 - M703D - FM702D.dwg | note |
Circuit boards (1)
| File | Board | Open |
|---|---|---|
| 1995 - M703D - 703-06-004 - OUTPUT AMPLIFIER COMPONENT LAYOUT.pcb | 14-318 | interactive viewer · KiCad board · top render · bottom render |
Parts list — board M702D (17 parts)
From M702D.WPD; also in timelines/data/bom.csv.
| Ref | Part | Value | Manufacturer | Mfr part no. |
|---|---|---|---|---|
| C201 | Capacitor | 1 uF/35 V | ITT | 1M35 |
| CR201 | Diode | Motorola | 1N4148 | |
| CR209 | Diode | Motorola | 1N4148 | |
| DS201 | LED, Yellow | Dialight | 555-2401 | |
| F201 | Fuse | Amp | AGC.500 | |
| Q201 | Transistor | National | PN3569 | |
| R201 | Resistor | 1/4W 5% | 15K | Philips CR25 |
| R217 | Potentiometer | 20K | Piher | PT10H 20K |
| R218 | Resistor | 1/4W 5% | 1K | Philips CR25 |
| R226 | Resistor | 1/4W 5% | 100K | Philips CR25 |
| R250 | Potentiometer | 20K | Piher | PT10H 20K |
| R251 | Resistor | 3W 5% | 1.5 | Dale CW-2B |
| U201 | Integrated Circuit | National | CD4016CN | |
| F201 | Fuseholder Clip | Littelfuse | 102068 | |
| Q205,Q206 | Heat Sink | WBS | 702-003 | |
| U201,U202 | 14 Pin Dip Socket | Amp | 640357-3 | |
| U203,U204 | 8 Pin Dip Socket | " | 640463-3 |
Drawings (1)
Read from the drawing title blocks.
| Drawing | Title | Date | Drawn by | Checked by | Iss. | Source |
|---|---|---|---|---|---|---|
| 703-06-004 | Output Amplifier Component Layout | 2 | file |