Utax CD 1018, Руководство по обслуживанию

Страница: 80 / 198

2GM
1-5-12
Code Contents
Remarks
Causes Check procedures/corrective measures
Check the connection of connector YC4 on
the power supply PWB and the continuity
across the connector terminals. Repair or
replace if necessary.
Measure the resistance. If it is
∞ Ω
, replace
the thermistor.
Check and reinstall if necessary.
Check for continuity. If none, replace the
thermal cutout.
Check and reinstall if necessary.
Check for continuity. If none, replace the
heater lamp.
Check the connection of connectors YC7
on the engine PWB and YC2 on the power
supply PWB, and the continuity across the
connector terminals. Repair or replace if
necessary.
Check if the zero-crossing signal is output
from YC2-11 on the power supply PWB. If
not, replace the power supply PWB.
Replace the engine PWB if C6400 is de-
tected while YC2-11 on the power supply
PWB outputs the zero-crossing signal.
Reinsert the connector. Also check for con-
tinuity within the connector cable. If none,
remedy or replace the cable.
Replace the operation PWB and check for
correct operation.
Reinsert the connector. Also check for con-
tinuity within the connector cable. If none,
remedy or replace the cable.
Replace the operation PWB and check for
correct operation.
C6050
C6400
C7800
C7810
Abnormally low fusing unit ther-
mistor temperature
• The fusing temperature remains be-
low 90
°
C/194
°
F for 1 s.
Zero-crossing signal problem
• The engine PWB does not detect the
zero-crossing signal for the time
specified below.
At power-on: 3 s
Others: 5 s
Broken external temperature ther-
mistor
• The input voltage is 0.5 V or less.
Short-circuited external temperature
thermistor
• The input voltage is 4.5 V or more.
Poor contact in
the thermistor
connector termi-
nals.
Broken thermistor
wire.
Thermistor in-
stalled incorrectly.
Thermal cutout
triggered.
Heater lamp in-
stalled incorrectly.
Broken heater
lamp wire.
Poor contact in
the connector ter-
minals.
Defective power
supply PWB.
Defective engine
PWB.
Poor contact in
the operation
PWB connector
terminals.
Defective external
temperature ther-
mistor.
Poor contact in
the operation
PWB connector
terminals.
Defective external
temperature ther-
mistor.