Early
Electronic
Calculator		 Hewlett-Packard 9825B Calculator

Manufacturer: Hewlett-Packard
Model: 9825B
Year: 1977
Form: Desktop
Functions: Scientific, programmable, tape storage
Number of Digits: 12 fixed, 12 mantissa + 2 exponent
Display Type: LED
Logic Technology: LSI
Tech. Data Level: 1

Notes:

- Unit Log -

Serial Number: 1622A04584
Year of Manufacture: 1977 (ICs stamped 7735. ICs on top two boards stamped with 8035 - unit may have been upgraded)
Date of Receipt: Jan 2002
Source: UBC SERF.
State upon Receipt: Partially dismantled.

Date: 20 Mar 2002
Procedure: Keyboard replaced with unit from 1014A00435.

Date: 24 Mar 2002
Procedure: Cleaned.

Date: 24 Mar 2002
Procedure: Broken rear top case section glued back together.

Date: 25 Mar 2002
Symptoms: Printer excessively noisy and produces "double" line feeds.
Solution: Decayed bumpers on solenoid replaced.

- Unit Log -

Serial Number: 1014A00435
Year of Manufacture: 1980 (shipping sticker dated 17 Sep 1980)
Date of Receipt: Jan 2002
Source: UBC SERF.
State upon Receipt: Partially dismantled.

Date: 20 Mar 2002
Procedure: Cleaned.

Date: 20 Mar 2002
Symptoms: Keyboard sticky.
Solution: Keyboard replaced with unit from 1976 9825B.

Date: 20 Mar 2002
Symptoms: Printer excessively noisy and produces "double" line feeds.
Solution: Decayed bumpers on solenoid replaced.

Date: 22 Mar 2002
Symptoms: No input from numeric 9 key.
Solution: Numeric 9 key swapped with f11 key, bad key opened, cleaned, replaced in f11 location.

- Unit Log -

Serial Number: 1003A13784 (Jurgen's 9825A)
Year of Manufacture: 1980 (shipping sticker dated 21 May 1980)
Date of Receipt: Jan 2002
Source: UBC SERF.
State upon Receipt: Partially dismantled.

Date: 28 Mar 2002
Procedure: Cleaned.

Date: 28 Mar 2002
Symptoms: Some keys feel rough or stick down.
Solution: The worst keys injected with a dab of lubricated contact cleaner: ERASE LIST RECALL f8 % Y S F P GAZINTA ) 8 =

Date: 29 Mar 2002
Symptoms: Display intermittent.
Solution: Ribbon cable connector from main logic to keyboard/display board replaced with new connector.

Date: 29 Mar 2002
Symptoms: Printer excessively noisy and produces "double" line feeds.
Solution: Decayed bumpers on solenoid replaced.


  Hewlett-Packard 9825B
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