September 2012
I’m trying to repair a microprocessor controlled massage chair, imported by HWE, Inc., Los Angeles. ID S-KMS mfg # 000101, additional number 61011-L.
NEC is the processor manufacturer and has indicated in thier product description that the processor is a uPD75004CU four-bit discontinued part. I am reasonably sure there is an onboard program, but do not know enough about it to get it into test mode.
It appears to be completely shut down. I have scoped the in and out, but there is no activity.
If the processor is dead, then a $1,500 item is junk, unless someone can help.
I would like to have a schematic, service manual, literature, or advice.
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