KIP 7170K, Service Manual

Page: 518 / 865

K134sm7e1 7-16
7. 1. 2.11 Fuser Low-Temp Error
Fuser Low-Temp Error (E-0900h/E-2304)
Fuser Thermostat Error (E-0903hE-2307)
Cause Checking
order
Checking Result Treatment
Error clearance 1 Have you cleared the fuser error in the
Error Clear Mode?
(Refer to 8.11 Clear/Reset)
Yes Wait until the Fuser Unit is
enough cooled down.
Then select the Error Clear
Mode and clear the
concerning error.
Wires 2 Are wires among Lamp (H1, H2), Solid
State Relay (SSR1) and Thermistors
(TH1 & TH2) connected properly?
No Connect them properly.
Lamp (H1, H2) 3 Unplug the machine, and then check the
resistance of Lamp (H1, H2) with the
multi-meter.
Is it 15k ohm or lower?
No Replace the Lamp.
Thermistors
(TH1 & TH2)
4 Select the Information Mode, and then
check the temperature of fuser detected
by Thermistors (TH1 & TH2).
Item No. : 00 (Fuser temperature 1)
01 (Fuser temperature 2)
Is each temperature normal?
No Replace the concerning
Thermistor.
DC Power Supply
(DCP1)
or Fuse
5 Confirm that the machine is turned on,
and then check the voltage of the orange
line (J220-4).
Is it 24V?
No Replace the DC Power
Supply if there is no problem
with the wires.
Confirm that the machine is turned off,
and then check whether or not each
Fuse is broken.
Is any Fuse broken?
Yes Replace the Fuse.
Relay (RY1) 6 Select Output Check, and then change
the signal of the following signal to “H”.
Device Code :
00022 HEAT-RY (Fuser Relay)
And check the resistance between the
following points.
Between RY1-2 and RY1-4
Between RY1-6 and RY1-8
Is the each resistance almost 0 ohm?
No Replace the Relay.
Solid State Relay
(SSR1)
7 Select Output Check, and then change
the signal of the following signals to “H”.
Device Code :
00022 HEAT-RY (Fuser Relay)
00021 HEAT1 (Fuser Lamp 1)
Then check the voltage between J105-1
and J105-2.
Is it 0V?
CAUTION
Change the signal of “21” (Fuser
Lamp 1) to “L” after checking!
Yes Replace the Solid State
Relay
No Replace the PW13420 PCB.