9. ELECTRIC MECHANISM
HE-800B
138
Error status #14 Feeding and zigzagging do not move continuously during test feeding.
Probable causes
Check/ repair/ adjust
Parts to be replaced
Malfunction of foot switch and cord
See #4.
Error status #15 Tension release does not operate during test feeding.
Probable causes
Check/ repair/ adjust
Parts to be replaced
1. Poor connector connection
Check
that main PCB connector P2 (SOL1) and
P3 (SOL2) is connected.
2.
Malfunction of tension release
solenoid
Disconnect main PCB connector P3 (SOL2) and
measure the resistance between pins 1-2 of the
cord connector.
OK if 6
-8 ohms.
Tension release solenoid
3.
Malfunction of main PCB.
a.
Turn on the power switch and check LD2
(green) on the main PCB.
OK if illuminated.
b.
With connector P3 (SOL2) disconnected from
the main PCB, check the continuity between
terminals 1 and 2 of connector P3 on the
main PCB.
OK if
∞
ohms.
c.
With main PCB connector P3 (SOL2)
connected, turn on the power and carry out
sewing, and measure the voltage between
pins 1-
2 of connector P3 (SOL2).
OK if there is voltage output momentarily
after sewing stops.
Main PCB assembly 800B
2727B
0651D
Summary of Contents for HE-800B
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Page 178: ...SERVICE MANUAL 2014 Brother Industries Ltd All Rights Reserved HE 800B I3061003D 2014 03 D 1 ...