System Lock Code - Casio CE-300 Service Manual

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6-2. System lock code

The following error code appears on display and receipt when the machine is lock up.
Execute the Flag MAC or MAC operation to clear these errors.
Error code:
Error sample:
Error code
1
2
3
6
7
0
Display: X - - - - - - - - -
Receipt: X ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! !
X: Lock code
3 ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! !
Error Name
Sequential trap The machine try to write to accumulator when the CPU is
hung up.
Memory write error Error happens when the CPU write the data to memory.
Trap error Abnormal address
Timer error Interrupt timer error
Stack over Abnormal address or stack pointer has an error
Other error CPU executes wrong jump vector before detect 1, 3 and
6 error code.
Digitized in Heiloo, Holland.
Meaning
— 19 —
3/22/15