Here is what the CPU is configured as:
W3 in
W4 in
W7 in
R93 out
Getting Vbatt at RAM pins 27 and 28, but not 26.
Should R93 be installed?
(Topic ID: 125481)
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256k RAM cutsheet says pin 26 is an addressing line, so no Vbatt goes there, although repair guides indicate it should. If Vbatt is getting to pin 28 on the RAM, why in the world would I be losing settings? Time and date stay correct, but adjustments reset. I've already replaced the RAM once and installed a socket.
Help!
Ok, so current jumper config and R93 not being there is correct for the 256k RAM. I'll try re-seating the ASIC chip and see if that helps, thanks!
4 weeks later
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