Plantronics Colorplus

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For more information, see this article's corresponding Wikipedia page: Plantronics Colorplus.
This device is in the WorkNeeded:OriginalParts category because it was flagged as missing information on the original parts. It may have replacement parts listed but those cannot be assumed to be identical to the originals. If you have a list of the original parts, please feel free to add them by copying the relevant table from EditorsToolbox:Tables
This device is in the WorkNeeded:ReplacementParts category because it was flagged as missing information on replacement parts. If it has the original parts listed you may be able to search for replacements using the parametric searches available from parts distributors. If you have or make a list of replacement parts, please feel free to add them by copying the relevant table from EditorsToolbox:Tables
This device is in the WorkNeeded:General category because it was flagged as missing general information about the device. The information may be incomplete, using default text, or inaccurate and should be verified with external sources if possible. If you can add or correct information on this page, please feel free to edit it and do so.
Plantronics Colorplus
Preliminary Information
Release Year 1982
Leak Risk Medium
Batteries None
Mounting Technology Through Hole, Sockets
Capacitor Types Tantalum, Ceramic
Destructive Entry No

Known Issues

Symptom or Problem Encountered

Causes

  • Description of cause

Solutions

  • Solution to the problem

Disassembly Notes

Tools Needed

  • 3/16 Hex Driver

Disassembly

  • Start by unscrewing the 4 standoffs from the two D-Sub connectors at the rear of the card. Then remove the ISA bracket.
  • Using your fingers, separate the two boards by pulling them apart near each of the three plastic standoffs to release them.
  • Pull the two boards apart, careful not to bend the connector pins.

Original Parts

Upper Board

Capacitor Specifications and Footprint Information
RefDes Qty Capacitance Voltage Mount Lead Spacing Temp Type Markings
C1-C22, C25, C26 24 Through Hole 7mm ? K104M
C23 1 Through Hole 2mm Tantalum 336 + 10K
C24, C27-C33 9 33nF Through Hole 2mm Ceramic 222
C35 1 33pF Through Hole 6mm Ceramic 330K 1KV
C36 1 10pF Through Hole 6mm Ceramic 100K 1KV

Lower Board

Capacitor Specifications and Footprint Information
RefDes Qty Capacitance Voltage Mount Lead Spacing Temp Type Markings
C1-C13, C15, C16, C17 16 Through Hole 7mm ? K104M
C14 1 33 µF 10V Through Hole 5mm Tantalum 33-10
C18 1 0.01 µF Through Hole 2mm Ceramic 103
*U19 between pins 3 and 7 1 Through Hole N/A Ceramic 330K Z5F 1KV Mexico
* Not sure if this is from the factory or not
Intergrated Circuits
RefDes Qty Model Number/Part Number Brand (if applicable) Explanation Datasheet
U1-U16 16 MK4516N-12 Mostek 2 Kibibyte (2 Kibibyte x 1 Memory Organization) DRAM [5V version of the 4116] MK4516 MK4516 (other link)
U17, U20, U21, U22, U23 5 SN74LS166 Texas Instruments 8-Bit Shift Register SN74LS166 SN74LS166 (other link)
U18, U19, U27, U28 2 74LS273N Octal D-Type Flip Flop with Single Non-Inverting Outputs SN74LS273
U21 1 SN74S00N Texas Instruments Quadruple 2-Input Positive-NAND Gates SNx400
U25 SN7408N Texas Instruments
U31, U34, U35, U36, U38, U52 6 SN74LS374N

Replacement Parts

Upper Board

Capacitors
RefDes Qty Compatible Part Number Order Links
C23 1 TAP336M010CCS / TAP336K010SCS Digikey Mouser
C35 1 CC45SL3AD330JYNNA DigiKey Mouser LCSC
C36 1 S100K33SL0R63K7R DigiKey Mouser LCSC

Lower Board

Capacitors
RefDes Qty Compatible Part Number Order Links
C14 1 TAP336M010CCS / TAP336K010SCS Digikey Mouser
C18 1 K103K10X7RF5UH5 / ZU102103M100X05B0P DigiKey Mouser LCSC
*U19 between pins 3 and 7 1 CC45SL3AD330JYNNA DigiKey Mouser LCSC
Integrated Circuits
RefDes Qty Compatible Part Number Order Links
U17, U20, U21, U22, U23 5 SN74LS166AN DigiKey Mouser
U18, U19 2 SN74LS273N DigiKey Mouser LCSC
U21 SN74S00N DigiKey Mouser

Additional Images

Related Links

References