Compaq B3800 (B3000 series) Service Manual to locate CMOS Battery
I'm trying to locate a service manual/schematic for the Compaq B3000 series notebook. Needing to replace CMOS battery but I can't locate it in any of the compartments on the underside of the unit and hesitate to dismantle the laptop without knowing how to disassemble correctly if need be.
Date/Time errors with random BSOD showing system CMOS checksum bad message. Hoping it's the CMOS battery first and nothing more serious.
The model is a Compaq/HP B3800 notebook I believe was released only for the Asia/Pacific market. HP/Compaq websites have little information other than software updates and a basic User manual.
Any help would be appreciated.
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Some Compaqs do NOT have a cmos battery as you are thinking of it, some are small , squarish and soldered into the motherboard...
You will have to strip the lappy completely to find it, and its NOT the job for an amateur...
All the best Brett
I have a laptop B3828, same series as yours. Though I can't find service manual. I'm surely that it has CMOS battery. All I can find are :