Lexmark 4443-301, Service Manual

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General information
1-9
Lexmark S500 Series
Maintenance approach
The diagnostic information in this manual leads you to the correct field replaceable unit (FRU) or part. Use the error
codes, symptom tables, service checks, and diagnostic aids to determine the symptom and repair the failure.
After you complete the repair, perform tests as needed to verify the repair.
Tools required for service
•
Flat-blade screwdriver
•
#1 Phillips screwdriver
•
#2 Phillips screwdriver
•
Spring hook
•
Analog or digital multimeter
Acronyms
ADC Analog to Digital Converter
ASF Automatic Sheet Feeder
ASIC Application Specific Integrated Circuit
DMA Direct Memory Access
dpi Dots per inch
DSA NPA Device Status Alert
EEPROM Electrically Erasable Programmable ROM
EOF End of Form
Flash Fast EEPROM
GPIO General Purpose Input/Output
HBP Hose Based Printing
IEEE Institute of Electrical and Electronics Engineers
ips inches per second
LED Light-Emitting Diode
NPA Network Printing Alliance
NVRAM Nonvolatile Random Access Memory
OEM Original Equipment Manufacturer
POR Power-On Reset
POST Power-On Self Test
ppi Pixles per inch
RAM Random Access Memory
ROM Read Only Memory
TSR Temperature Sense Resistor
PWM Pulse Width Modulate
UART Universal Asynchronous Receiver/Transmitter
USB Universal Serial Bus