Brother KE-430B Service Manual page 184

8. ELECTRIC MECHANISM
Error status #1 The power indicator does not light when the power is turned on.
Probable causes
1. Conversion transformer
improperly wired
(for 100V and
specifications)
(for 240V, 380V, 400V and
415V specifications)
(for 200V, 220V and 230V
specifications)
No conversion transformer is
installed.
2. Conversion transformer
defective
3. Power supply cable defective
4. Fuse has blown
177
Note: Before adjustment, be sure to check
that the power is turned off to prevent
110V electric shock.
If the power is turned on, turn off the
power, and wait at least 5 minutes.
• Conversion in the control box
Check the transformer is correctly and
securely wired to the terminals.
(For 200V, 220V and 230V specifications,
this is not necessary.)
3630Q
<100V>
3631Q
<400V>
• Separate P4 (ACIN) connectors on the
power supply circuit board, and check
there is continuity between pins 1 and 2 in
the connector on the cable.
(For 200V, 220V and 230V specifications,
this is not necessary.)
3632Q
• Separate P4 (ACIN) connectors on the
power supply circuit board, turn on the
power, and measure the voltage across
pins 1 and 2 in the connector on the cable.
If the voltage is as shown in the table below,
the power supply cable is not defective.
For 200V, 220V and
230V specifications
For 100V, 110V,
240V, 380V, 400V
and 415V
specifications
After checking, turn off the power, and rejoin
P4 connectors.
3633Q
• Remove fuses No.3 and No.4, and check
them for continuity.
If there is no continuity, replace the fuses
with new ones, and perform the check/
repair/ adjust items of #1-5.
KE-430B, 430C series
Check/ repair/ adjust
The same as the
power supply voltage
of wall socket
About 220V
Parts to be replaced
Conversion transformer
Power supply cable
Fuse 6A-250V