CHAPTER 5 PERIODIC MAINTENANCE
5-1
CHAPTER 5 PERIODIC MAINTENANCE
To avoid creating secondary problems by mishandling, follow the warnings below during
maintenance work.
WARNING
(1) Always turn off the power switch and unplug the power cord from the power outlet
before accessing any parts inside the printer.
(2) Some parts inside the printer are extremely hot immediately after the printer is used.
When opening the front cover or rear cover to access any parts inside the printer,
never touch the red colored parts shown in the following figures.
1. CONSUMABLE
PARTS
The consumable parts described in this section are parts which are subject to deterioration or
damage and should be replaced at least once during the period of warranty of the product if
any print quality problem appears.
1.1
Drum Unit
The Drum LED is on when the drum unit is nearly at the end of its life.
Life expectancy:
20,000 pages
NOTE:
There are many factors that determine the actual drum life, such as temperature, humidity,
type of paper and toner that you use, the number of pages per print job, etc.
<Replacement Procedure>
(1) Open the front cover of the printer and
pull out the drum unit.
(2) Place the drum unit on a flat, horizontal
surface, and remove the toner cartridge
from the drum unit while pushing the
lock lever down with your right hand.
(Fig. 5-1)
(3) Unpack the new drum unit.
Fig. 5-1
Содержание HL-1470N
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Страница 61: ...CHAPTER 3 THEORY OF OPERATION 3 11 Two 32 Mbits ROMs x 16 bit are fitted Fig 3 11 HL 1470N ...
Страница 63: ...CHAPTER 3 THEORY OF OPERATION 3 13 Two 16M bit DRAMs x 16 bits are used as the RAM Fig 3 14 HL 1450 1470N ...
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Страница 220: ...Appendix 12 Main PCB Circuit Diagram HL 1230 1440 1 3 CODE LJ8812001 B512130 CIR 1 3 A XX NAME ...
Страница 221: ...Appendix 13 Main PCB Circuit Diagram HL 1230 1440 2 3 CODE LJ8812001 B512130 CIR 2 3 A XX NAME ...
Страница 222: ...Appendix 14 Main PCB Circuit Diagram HL 1230 1440 3 3 CODE LJ8812001 B512130 CIR 3 3 A XX NAME ...
Страница 223: ...Appendix 15 Engine PCB Circuit Diagram CODE LJ88009001 B512136 CIR A XX NAME ...
Страница 224: ...Appendix 16 Network Board Circuit Diagram HL 1470N CODE LJ8107000 B512058CIR A 29 NAME ...
Страница 227: ...CODE NAME Appendix 19 High voltage Power Supply PCB Circuit Diagram ZLe MPH3212 ...
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Страница 248: ...12 ACCESSORIES MODEL HL 1230 1440 1450 14700N 84U Z31 Z32 Z33 Z34 920 18 2 3 4 1 ...