Japanese edition is here.

Open the hp32sII	Blow the dust on and around the micro- processor PCB by the canned air	Unmount the micro-processor PCB and make it clean by the precision electronics cleaner	Clean the LCD rubber(zebra) connector and the contact of the film connecotor of the membrane keypad very carefully
Uncover the deformed foam rubber, the main cause of the faulty keypad, under the film connector	Apply the double coated polyethylene foam tape with 0.8mm thickness (3M 4462W) at 2.5mm width	Set the film connector, blow air again, then remount the PCB	Apply the aluminum foil adhesive tape on the back of the cover to reduce the dust that is collected by the static charge which may cause the contaminations

HP 42S memory upgrade and overclock

• Frac - Fractional approximation
• LCM/GCD - LCM and GCD of two positive integers
• μZw, μwZ - Synthesize/Analize microstrip transmission line

Inside the HP-32SII