Editing HiNote Ultra General Maintenance

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[[File:Digital HiNote Ultra CS475 keyboard and hinge.jpg|thumb|right|340px|HiNote Ultra CS475: keyboard, screen hinge and rear of the case (ume-y, CC BY 2.0)]]
Care, memory, BIOS and configuration for the '''[[HiNote Ultra]]''', from DEC's ''Digital HiNote Ultra User's Guide'' (ER-P70WW-UA.A01) and DEC's BIOS update and battery utilities.<ref name="ug" /><ref name="bios" /><ref name="readme" /> DEC's field service guide for this model is not online, so there is no published disassembly procedure; the user's guide covers only the parts an owner was expected to reach.

== Environment ==
{| class="wikitable styled-table" style="width:70%; text-align:center;"
|+ '''Operating and storage limits (DEC user's guide, pp. A-2 to A-3)'''
! !! Operating !! Not operating
|-
| Temperature || 10 to 40 °C || −20 to 60 °C
|-
| Relative humidity || 20% to 80%, non-condensing, wet bulb 33 °C max. || 5% to 95%, non-condensing, wet bulb 35 °C max.
|-
| Altitude || −60 to 3040 m || −60 to 12,160 m
|-
| Shock || 10 G, 11 ms || 100 G, 11 ms
|}
<ref name="uga" />
The battery pack has its own limits: 0 to 40 °C in use and −20 to 45 °C for long-term storage.<ref name="uga4" />

== Battery ==
Store the machine fully shut down, not in suspend: a pack drained flat in suspend or storage trips its protection circuit and the computer stops recognising it. See [[HiNote Ultra Battery Service]] for the revive utility and the CR1220 clock cell.<ref name="readme" /><ref name="ugw" />

== Power button, lid switch and reset ==
The power button on the left side works either as On/Off or as Suspend/Resume, chosen in Setup. The lid switch can suspend and resume the machine, sound a fast beep and blank the screen when the lid is closed, or just blank the screen; DEC suggests the last setting with an external monitor.<ref name="ug3" /> The reset button on the underside turns the computer off; pressed in suspend mode it loses everything in memory.<ref name="ug3r" /><ref name="ug1" /> Setup is entered with [Fn] + [F3].<ref name="ug6" />

== Memory module ==
A 4, 8 or 16 MB module fits in a compartment underneath. DEC's procedure:<ref name="ug7" />
# Set the power button to On/Off in Setup, or press the reset button, so the machine is fully off. DEC warns that removing the cover with the machine only suspended can damage the computer or the module.
# Turn the computer off, close the lid and turn it over.
# Remove the compartment cover, fit the module and refit the cover. DEC says the cover must always be in place.
# Turn the computer over, open the lid and run Setup to register the new memory.
The total with a module fitted is 8, 12 or 20 MB on passive-matrix and mono machines and 12, 16 or 24 MB on TFT machines.<ref name="uga" />

== Floppy Dock ==
The 3.5-inch diskette drive lives in the Floppy Dock, which hooks into clips beside the battery pack on the underside and is held by a thumbscrew. Fit it with the computer off and the lid closed, and keep the connector compartment door closed whenever the dock is not attached.<ref name="ug5" />

== Screen ==
DEC's warning is that high voltages exist inside the LCD enclosure.<ref name="ug6l" /> Brightness and contrast are set with slide levers beside the screen; the CT (TFT) models have only a brightness lever.<ref name="ug6l" /> [Fn] + [F4] switches between the LCD and an external monitor.<ref name="ug6l" />

== Trackball ==
If the cursor moves erratically, the trackball needs cleaning. DEC put the cleaning instructions in the online help of its Digital Program menu, not in the printed guide.<ref name="ug6" />

== BIOS ==
The latest BIOS for the CT450 and CT475 is version 1.42, issued as the self-extracting file 0000009R.EXE on the support site HP inherited from DEC and preserved on archive.org as a floppy image. The flash utility runs from DOS: <code>FLASHB /B /OVER</code> skips the version check and also programs the boot block. Afterwards, turn the machine off, enter Setup at the next start, choose Load Factory Default Settings from the Default menu, save and exit, and power down to restart.<ref name="bios" />

== Related pages ==
* [[HiNote Ultra]]
* [[HiNote Ultra Troubleshooting Guide]]
* [[HiNote Ultra Battery Service]]
* [[HiNote Ultra Documentation]]
* [[Floppy Drive Repair]]

== References ==
<references>
<ref name="ug">Digital Equipment Corporation, ''Digital HiNote Ultra User's Guide'', ER-P70WW-UA.A01, November 1994 ([[:File:Digital HiNote Ultra User's Guide (ER-P70WW-UA.A01).pdf]]).</ref>
<ref name="ugw">DEC, ER-P70WW-UA.A01, front matter. CR1220 clock battery warning.</ref>
<ref name="ug1">DEC, ER-P70WW-UA.A01, p. 1-5. Reset during suspend loses memory.</ref>
<ref name="ug3">DEC, ER-P70WW-UA.A01, pp. 3-3 to 3-4. Power button modes and lid switch.</ref>
<ref name="ug3r">DEC, ER-P70WW-UA.A01, p. 3-5. Reset button.</ref>
<ref name="ug5">DEC, ER-P70WW-UA.A01, pp. 5-8 to 5-9. Connecting the Floppy Dock.</ref>
<ref name="ug6">DEC, ER-P70WW-UA.A01, p. 6-6. Setup with Fn+F3; trackball cleaning in the online help.</ref>
<ref name="ug6l">DEC, ER-P70WW-UA.A01, p. 6-12. LCD warning and troubleshooting.</ref>
<ref name="ug7">DEC, ER-P70WW-UA.A01, pp. 7-6 to 7-7. Installing a memory module.</ref>
<ref name="uga">DEC, ER-P70WW-UA.A01, pp. A-2 to A-3. Specifications and environment.</ref>
<ref name="uga4">DEC, ER-P70WW-UA.A01, p. A-4. Battery pack temperatures.</ref>
<ref name="bios">"DEC HiNote Ultra CT450/CT475 Notebook BIOS 1.42 update floppy", archive.org item [https://archive.org/details/bios_floppy_1.42_floppy_hinote_ultra bios_floppy_1.42_floppy_hinote_ultra], with the flash utility's instructions and a photograph of the DIGITAL HiNote FLASH Update Utility 1.07 screen.</ref>
<ref name="readme">Digital Equipment Corporation, README.TXT for REVIVE.COM, 18 February 1997, [https://archive.org/details/digital-hi-note-ultra-ct-450-battery-revive-utility archive.org].</ref>
</references>

[[Category:Digital Equipment Corporation]]
[[Category:Maintenance Guides]]