Plantronics Colorplus

Plantronics Colorplus
Preliminary Information
Release Year	1982
Leak Risk	Medium
Batteries	None
Mounting Technology	Through Hole, Sockets
Capacitor Types	Tantalum, Ceramic
Destructive Entry	No

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.

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	Mount	Lead Spacing	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	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