Kyocera TASKalfa 4551ci Service Manual

2L6/2N6/2N5/2N4
1-4-118
6000 Broken fuser heater wire
Fuser thermistor 1 does not

after 60 s during warming up.
The detected temperature of
fuser thermistor 1 does not
reach the specified tempera-
ture (ready indication temper-
ature) for 420 s in warming up


Fuser unit 1. Check that no paper jam is present.
2. Confirm that the wiring connector is
firmly connected and, if necessary,
connect the connector all the way in.
Fuser unit and Engine PWB (YC26)
3. If the wiring is disconnected, shorted or
grounded, replace the wiring.
4. Replace the Fuser unit and execute
U167 counter clear (see page 1-3-112).
(Deteriorated sensitivity due to the toner
adhered to the center thermistor.)
Engine PWB 1. Check the engine software and upgrade
to the latest, if necessary.
2. Replace the engine PWB (see page 1-5-
80).
Fuser IH PWB 1. Confirm that the wiring connector is
firmly connected and, if necessary,
connect the connector all the way in.
Fuser IH PWB(YC4) and Engine PWB
(YC26)
2. Replace the fuser IH PWB (see page 1-
5-96).
Fuser IH unit 1. Confirm that the wiring connector is
firmly connected and, if necessary,
connect the connector all the way in.
Fuser IH unit and Fuser IH PWB (YC9
and 10)
2. If the wiring is disconnected, shorted or
grounded, replace the wiring.
3. Replace the fuser IH unit (see page 1-5-
43).
6020 Abnormally high fuser Cen-
ter thermistor 1 temperature
Fuser center thermistor 1
detects a temperature higher

Fuser unit 1. Confirm that the wiring connector is
firmly connected and, if necessary,
connect the connector all the way in.
Fuser unit and Engine PWB (YC26)
2. If the wiring is disconnected, shorted or
grounded, replace the wiring.
3. Replace the Fuser unit (see page 1-5-
68).
Engine PWB 1. Check the engine software and upgrade
to the latest, if necessary.
2. Replace the engine PWB (see page 1-5-
80).
Code Contents Related parts
Check procedures/
corrective measures

Kyocera TASKalfa 4551ci Specifications

General

Duplex printing	Yes
Print technology	Laser
Duplex printing mode	Auto
Time to first page (black, normal)	3.9 s
Time to first page (color, normal)	5.1 s
Print speed (black, normal quality, A3)	22 ppm
Print speed (black, normal quality, A4/US Letter)	45 ppm
Copier resize	25 - 400 %
Maximum number of copies	999 copies
N-in-1 copy function (N=)	2, 4
Scan to	E-mail, FTP, USB
Maximum scan area	A3 (297 x 420) mm
Scan speed (color)	160 ppm
Image formats supported	JPG, TIF
Faxing	Color faxing
Fax memory	12 MB
Modem speed	33.6 Kbit/s
Fax coding methods	JBIG, MH, MMR (Fax coding method), MR
Fax resolution (black)	200 x 100 DPI
Fax transmission speed	3 sec/page
Digital sender	No
Printing colors	Black, Cyan, Magenta, Yellow
Maximum duty cycle	- pages per month
Number of print cartridges	4
Page description languages	Microsoft XPS, PCL 5c, PCL 6, PCL XL
Paper input type	Cassette, Paper tray
Total input capacity	1150 sheets
Total output capacity	250 sheets
Maximum input capacity	7650 sheets
Total number of input trays	3
Multi-Purpose tray input capacity	150 sheets
Maximum print size	297 x 420 mm
Duplex media weight	60 - 256 g/m²
Paper tray media types	Banner, Envelopes, Plain paper
Paper tray media weight	60 - 220 g/m²
ISO A-series sizes (A0...A9)	A3, A4
Multi-purpose tray media types	Plain paper
Maximum ISO A-series paper size	A3
Multi-Purpose Tray media weight	60 - 300 g/m²
Display	LCD
Product color	Gray
Market positioning	Business
Direct printing	-
Standard interfaces	Ethernet, USB 2.0
USB 2.0 ports quantity	2
Processor model	P1022
Processor family	PMC-Sierra
Internal storage capacity	320 GB
Sound power level (standby)	38.3 dB
Sound pressure level (printing)	50.9 dB
AC input voltage	220 - 240 V
AC input frequency	50 - 60 Hz
Power consumption (standby)	200 W
Power consumption (PowerSave)	1.8 W
Power consumption (average operating)	1030 W
Sustainability certificates	RoHS

Weight and Dimensions

Depth	767 mm
Width	668 mm
Height	747 mm