HP-27S LCD transplantation (from an HP-17B)
Takayuki HOSODA
Jan. 27, 2010

Japanese Japanese edition is here.


Remove LCDs
HP-27S(left) HP-17B(right)
Apply adhesive film tape Align the LCD and set it
remove LCD apply adhesive film transplant LCD
Set zebra connectors Reinstall the PCB Assemble and run self diagnostics test
OK-27S-E
set zebra connector reinstall PCB.jpg OK-27S-E
SN=2808A04492

Power supply current (fclock=32.768kHz, Vbattery=4.74V(SR44×3), Ta=25°C)
Irun≈6~11mA,
Iidle≈340μA
Istandby≈8.2μA
Isleep≈170nA

SEE ALSO
HP 42s memory upgrade and overclock
HP Pioneer series calculator internals
External LINKS
www.hpmuseum.org - The Museum of HP Calculators
MoHPC HP Articles Forum, Pioneer "Observational Internals", Paul J. Brogger

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