Early
Electronic
Calculator		 Lloyd's Accumatic 310 Calculator

Manufacturer: Lloyd's
Model: Accumatic 310
Year: 1975
Form: Pocket
Functions: Basic four, percent, memory
Number of Digits: 8
Display Type: VFM
Display:FUTABA 9-CT-08
Logic Technology: LSI
Diodes: 3
Transistors: 2
IC Complement:Mitsubishi M58618-81P
Batteries: 4 AA
Power Connector:6 VDC, + tip, mini audio, non-isolating
Tech. Data Level: 2
Tech. Data Source: RE
Tech. Data Pages: 1
Tech. Data:Schematic (pdf)

- Unit Log -

Serial Number: 5H-82004
Year of Manufacture: 1975 (IC stamped with 562N, display with 5J.)
Date of Receipt: 2001 May 13
Source: Hastings V. V.
State upon Receipt: Good physical condition except battery connectors corroded. Fully functional.
Current State: Not functional. Failed switching transformer (2020 Feb). Fully functional (2001 Mar 18).

Date: 2001 Mar 18
Procedure: Cleaned. Battery connectors not re-installed.

Date: 2020 Feb
Symptoms: Display filaments light up when turned on.
Analysis: Switching power supply transformer open in both directions at V-G terminal. Appears to be corrosion of fine copper wire around solder point at terminal 8.


  Lloyd's Accumatic 310
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