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File:Sharp PC-1250 and PC-1251 power and LCD bias circuit (service manual).png

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Summary

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The power and LCD bias part of the circuit diagram in Sharp's PC-1250/PC-1251 service manual (section 7): two CR2032 lithium cells feeding VGG through a 22 Ω resistor and diode L1, the 3.3 µF capacitor and RD6.2E8 zener across the supply, and the VR 20 kΩ contrast control with the resistor divider and capacitors that produce VDIS, VB, VM and VA. Rendered at 300 dpi from the scan and cropped.

Source

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File:Sharp PC-1251 Service Manual.pdf, PDF page 12. The scan came from Sharp Pocket Computers (sharppocketcomputers.com), retrieved 2026-10-21.

Author

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Sharp Corporation.

Licence

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Copyright Sharp Corporation. Hosted for preservation and repair reference, with the source cited.

File history

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Date/TimeThumbnailDimensionsUserComment
current19:00, 21 October 2026Thumbnail for version as of 19:00, 21 October 2026943 × 561 (32 KB)Josh (talk | contribs)Upload for Sharp PC-1245 and PC-1251 pages

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