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8. ELECTRIC MECHANISM
Erro
r status #20 The machine does not stop with the needle at the upper position.
(“E-50” appears <“E.22” for the KE-436B and 436C>.)
Probable causes Check/ repair/ adjust Parts to be replaced
3. Cord defective • See #15-1.
4. Power supply circuit board
defective
KE-430B, 430C series
189
•
With P13 (DC18) connectors plugged in
on the main circuit board, measure the
voltage in the connector on the cable.
If the voltage across the following pairs of
pins, pins 1 and 2, pins 4 and 5, and pins
10 and 11 is DC 15–18 V, it is OK.
Power supply circuit
board
5. Main circuit board defective
Main circuit board
+15 – 18V for each
Main circuit board
3651Q
6. Motor defective
Motor
Error status #21 Programming can not be made. (KE-436B, 436C only)
Probable causes Check/ repair/ adjust Parts to be replaced
1. The programmer connector
and its cable are defective.
• Remove connector P2 (PGM) on the
panel PCB and connector P2 on the
programmer PCB, and then return them to
their positions.
2. The programmer is defective.
• Replace the programmer with a new one.
Programmer
3. Panel circuit board defective
• Replace the panel circuit board with a new
one.
Panel circuit board