Samsung SCX-4521F Reference Information
Reference Information
Samsung Electronics
Service Manual
11-1
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11. Reference Information
This chapter describes the reference information for applying this training manual, and it is consist-ed
of the tool list, the abbreviation table, the outline of model, and so on.
11.1 Troubleshooting Tool
The following tools are recommended safe and easy troubleshooting as described in this service manual.
• DVM(Digital Volt Meter)
Standard : Indicates more than 3 digits.
• Driver
Standard : "-" type, "+" type (M3 long, M3 short, M2
long, M2 short).
• T weezers
Standard : For general home use, small type.
• Cotton Swab
Standard : For general home use, for medical service.
• Cleaning Equipments
Standard : An IPA(Isopropyl Alcohol)dry wipe tissue or
a gentle neutral detergent and lint-free cloth.
• Vacuum Cleaner
• Spring Hook
Standard : For general use
• Software (Driver) installation CD ROM
Service Manual
Reference Information
11-2
Samsung Electronics
11.2 Acronyms and Abbreviations(1)
The table below explains the abbreviations and acronyms used in this service manual. Where abbreviations
or acronyms are used in the text please refer to this table.
Abbreviations Explanation
AP Access Point
AC Alternating Current
APC Auto Power Control
ASIC Application Specific Integrated Circuit
ASSY assembly
BIOS Basic Input Output System
BLDC Brush-less Direct Current
CMOS Complementary Metal Oxide Semiconductor
CN connector
CON connector
CPU Central Processing Unit
dB decibel
dbA decibel A
dBM decibel milliwatt
DC direct current
DCU Diagnostic Control Unit
DPI Dot Per Inch
DRAM Dynamic Random Access Memory
DVM Digital Voltmeter
ECP Enhanced Capability Port
EDC Embedded Diagnostic control
EEPROM Electronically Erasable Programmable Read Only Memory
EMI Electro Magnetic Interference
EP electrophotographic
EPP Enhanced Parallel Port
FPOT First Printout Time
F/W firmware
GDI graphics device interface
GND ground
HBP Host Based Printing
HDD Hard Disk Drive
H/H High temperature and high marshy place
HV high voltage
HVPS High Voltage Power Supply
I/F interface
I/O Input and Output
IC integrated circuit
IDE Intelligent Drive electronics or Imbedded Drive Electronics
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