Utax CD 1015 Servisní příručka stáhnout pdf (Strana 178)

2AV/X

1-5-27

Problem Causes Check procedures/corrective measures

1-5

*1: Optional for 15 cpm copier. *2: For 20 cpm copier only. *3: Optional for 220-240 V specifications of 15 cpm copier.

*4: Optional for both 20 cpm and 15 cpm copiers.

(16)

The exposure lamp

does not turn on.

(17)

The exposure lamp

does not turn off.

(18)

The fixing heater

does not turn on

(C610).

(19)

The fixing heater

does not turn off.

(20)

Main charging is not

performed (C510).

(21)

Transfer charging is

not performed.

(22)

No developing bias

is output.

(23)

The original size is

not detected.

Poor contact in the

exposure lamp connector

terminals.

Defective inverter PCB.

Broken wire in fixing

heater.

Fixing unit thermostat

triggered.

Broken fixing unit

thermistor wire.

Dirty sensor part of the

fixing unit thermistor.

Broken main charger wire.

Leaking main charger

housing.

Poor contact in the high-

voltage transformer PCB

connector terminals.

Defective main PCB.

Defective high- voltage

transformer PCB .

Poor contact in the high-

voltage transformer PCB

connector terminals.

Defective main PCB.

Defective high-voltage

transformer PCB .

Poor contact in the

developing bias wire.

Poor contact in the high-

voltage transformer PCB

connector terminals.

Defective high-voltage

transformer PCB .

Defective original

detection switch*

Reinsert the connector. Also check for continuity within the

connector cable. If none, remedy or replace the cable.

If the exposure lamp does not turn on when CN24-1 and CN24-2

on the inverter PCB are held low, replace the inverter PCB.

If the exposure lamp does not turn off when CN24-1 and CN24-2

on the inverter PCB are held high, replace the inverter PCB.

Check for continuity across the heater. If none, replace the

heater.

Check for continuity across the thermostat. If none, remove the

cause and replace the thermostat.

Measure the resistance. If it is ∞ Ω, replace the fixing unit

thermistor.

Check visually and clean the thermistor sensor parts.

See page 1-5-18.

Check the developing bias wire. If there is any problem, replace

it.

Reinsert the connector. Also check for continuity within the

connector cable. If none, remedy or replace the cable.

Check if the developing bias is output when CN1-3 on the high-

voltage transformer PCB goes low while maintenance item U030

is run. If not, replace the high-voltage transformer PCB.

Check if CN25-2 on the main PCB goes low when the original

detection switch*

is turned on and off. If not, replace the original

detection switch*

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