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Trouble Cause (1) Cause (2) Checking order and adjusting procedure Page
47. Error E915
Communication error between
panel and main CPU repeatedly
occurs.
48. Error E916
Communication error between
main CPU and main shaft CPU
repeatedly occurs.
49. Error E918
Heat sink temperature of MAIN
p.c.b. error repeatedly occurs.
50. Error E943
EEPROM error occurs.
51. Error E946
EEPROM of head relay P.C.B.
writing error repeatedly occurs.
52. Error E999
Cloth cutting knife sensor error
repeatedly occurs.
(When knife is held down.)
47-1) There is abnormality in
communication between
panel and MAIN p.c.b.
48-1) There is abnormality in
communication between
MAIN p.c.b. and SDC p.c.b.
49-1) Heat sink temperature of
MAIN p.c.b. has risen more
than 85˚C.
49-2) Failure of MAIN p.c.b.
50-1) EEPROM of MAIN p.c.b.
cannot perform writing/
reading.
50-2) Failure of MAIN p.c.b.
51-1) EEPROM cannot perform
writing/reading.
51-2) Failure of MAIN p.c.b or INT
p.c.b.
52-1) Sensor signal is not
transmitted to micro computer
of MAIN p.c.b.
52-2) Cloth cutting knife bites in cloth
and does not return.
1)-A Failure of MAIN p.c.b. or
PANEL p.c.b.
1)-A Connector of SDC-MAIN cord
S (asm.) is disconnected.
1)-B Failure of MAIN p.c.b. or SDC
p.c.b.
1)-A Cooling is not performed.
1)-A EEPROM of MAIN p.c.b. is
disconnected.
1)-A Connector of MAIN-INT cord D
(asm.) is disconnected.
1)-A Connector of INT p.c.b. is
disconnected.
1)-B Breaking of wire of MAIN-INT
cord B (asm.)
1)-C Failure of MAIN p.c.b.
1)-D Adjustment of the position of
knife is improper.
2)-A Cloth cutting knife is broken.
2)-B Power shortage
Replace operation panel or MAIN p.c.b.
Check connection or breaking of wire of SDC-MAIN cord S (asm.)
SDC p.c.b. CN15, MAIN p.c.b. CN32
Replace MAIN p.c.b. or SDC p.c.b.
Check whether cooling of control box is performed.
Check whether inlet port is clogged, fan is defective, or the like.
When the aforementioned check is OK, failure of MAIN p.c.b. is proved.
Check whether EEPROM is properly mounted.
When the aforementioned check is OK, failure of MAIN p.c.b. is proved.
Check connection or breaking of wire of MAIN-INT cord D (asm.). Refer
to “Connection circuit diagram between control box and head”.
When the aforementioned check is OK, failure of MAIN p.c.b. or INT
p.c.b. is proved.
Check the connection of CN67 of INT p.c.b.
Check whether breaking of wire is in MAIN-INT cord B (asm.). Refer to
“Connection circuit diagram between control box and head”.
When the aforementioned check is OK, failure of MAIN p.c.b. is proved.
Re-adjust the knife sensor.
Replace the knife.
Increase power by memory switch.
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