GE DS3800HUMB1B1B Mark IV Universal Memory Board

The GE DS3800HUMB1B1B is a Universal Memory Board designed for the General Electric Mark IV Speedtronic control system. Identified by the functional acronym HUMB, it belongs to Mark IV Series Group 1 and is classified as a normal assembly. The board includes one LED indicator for visual status indication.

Technical Specifications

Memory Components and Board Configuration

The board contains multiple EPROM (Erasable Programmable Read-Only Memory) devices and 30 configuration jumpers. These hardware elements form part of its memory configuration architecture. The board is also divided into four logical sections identified as Quads A, B, C, and D.

The individual jumper assignments and memory capacity are not established by the available product information. Existing jumper positions should therefore be recorded and checked against the applicable Mark IV configuration documentation before making changes.

Board Connections and Indicators

The DS3800HUMB1B1B has a modular connector for connection to the corresponding rack interface. Retention levers secure the board in its installed position. Its hardware layout also includes one reset toggle switch and one red LED indicator.

The LED's precise operating states and the reset switch's effect on system operation have not been independently verified for this complete model number. These details should not be assumed when performing troubleshooting or maintenance.

Frequently Asked Questions

Q: How many jumpers are installed on the DS3800HUMB1B1B?

A: The board is equipped with 30 jumpers. Their individual functions and required positions depend on the board configuration and should be verified against the applicable Mark IV documentation.

Q: What memory devices does this board use?

A: The available product information identifies multiple EPROM devices. The exact memory capacity and individual device specifications are not confirmed.

Q: Does the DS3800HUMB1B1B have onboard status indicators?

A: Yes. It has one red LED indicator and one reset toggle switch. The exact LED diagnostic codes and reset behavior require confirmation from model-specific technical documentation.