HP 7475A Plotter: Difference between revisions

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|C2
|C2
|1
|1
|22,000 µF
|2,200 µF
|40V
|40V
|Through Hole (3 pin)
|Through Hole (3 pin)
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|C24
|C24
|1
|1
|6800 µF
|6,800 µF
|25V
|25V
|Through Hole (3 pin)
|Through Hole (3 pin)

Revision as of 20:19, 23 July 2023

For more information, see this article's corresponding Wikipedia page: Device.
HP 7475A Plotter
Preliminary Information
Leak Risk Medium
Batteries None
Mounting Technology Through Hole
Capacitor Types Aluminum Electrolytic, Tantalum, Ceramic
Destructive Entry No

HP plotter with HP-IB (GP-IB) interface. Hold 6 pens in carousel.

Known Issues

Fish Smell

Causes

  • Leaking capacitor

Solutions

  • Clean PCB and replace cap

Disassembly Notes

Screws in rear from top removes plastic shell.

Two screws going through plot mechanism and PCB hold both in. HP-IB port screws must also be removed to remove PCB.

Original Parts

Main logic board

07475-60102

Capacitor Specifications and Footprint Information
RefDes Qty Capacitance Voltage Mount Diameter/Size Height Lead Spacing Temp Type Brand Series
C1 1 68 µF 35V Through Hole 10mm 20mm 5mm -55-105 °C Aluminum Electrolytic Nippon Chemi-Con CERX
C2 1 2,200 µF 40V Through Hole (3 pin) 25mm 67mm 9.5mm Aluminum Electrolytic Sprague 674D
C24 1 6,800 µF 25V Through Hole (3 pin) 25mm 39mm 12mm 85°C Aluminum Electrolytic Nippon Chemi-Con SM
C20, C25 2 22 µF 25V Through Hole Axial 6mm 13mm 20mm 85°C Aluminum Electrolytic Nichicon H8333 ?
C31, C32 2 47 µF 50V Through Hole 8mm 12mm 3.5mm 85°C Aluminum Electrolytic Nichicon SE (M)

Replacement Parts

Basic PCB Name

Capacitors
RefDes Qty Compatible Part Number Order Links
Digikey

If parts are not available or different selection is preferred, you can use the values in the Original Parts section to perform a parametric search.

Kits

Related Links

References