6. MALFUNCTIONS- Page 142

CHAPTER 6  TROUBLESHOOTING

6-20

M-5

Insufficient output from high-voltage power supply unit

Possible cause

Step

Check

Result

Remedy

High-voltage
contact

1

Do any of the terminals on the
high-voltage contacts have dirt
or contact burns?

Yes

Clean the terminals.

High-voltage
power supply
PCB

2

Check the connections of the
connector between the high-
voltage power supply and the
engine PCB are secured
correctly.

Yes

Replace the high-voltage
power supply PCB

No

Reconnect the connector
between the high-voltage
power supply and the engine
PCB.

M-6

Fixing heater temperature failure

Possible cause

Step

Check

Result

Remedy

Poor thermistor
harness contact

1

Is the contact of connector P6
on the engine PCB good?

No

Reconnect the connector.

Blown thermal
fuse

2

Remove the fixing unit and
measure the resistance of the
thermistor.  Is it open circuit?

Yes

Replace the fixing unit.

Thermistor
failure

3

Is the thermistor installed
properly?

Yes

Replace the fixing unit.

No

Reinstall the thermistor
properly.

Halogen heater
lamp failure

4

Remove the fixing unit and
measure the resistance of the
halogen heater lamp.  Is it
open circuit?

Yes

Replace the halogen heater
lamp.

M-7

BD failure

Possible cause

Step

Check

Result

Remedy

Harness
connection
failure

1

Is connector P10 on the main
PCB secured correctly?

No

Reconnect the connector
securely.

Yes

Replace the laser unit.