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DOD-PD-1261 (2nd edition)

 

 

1. PRECAUTIONS 

 

1.1 MEANING OF CAUTION SIGNS 

 

The following caution signs have very important meaning. 

Be sure to read ‘1.2 CAUTIONS’ and 

‘1.3 ATTENTIONS’, after understanding these contents! 

!

CAUTION

 

This sign has the meaning that customer will be injured by 

himself, or the product will sustain damage, if customer has 
wrong operations. 

 

 

This sign has the meaning that customer will get an electrical shock, if customer has 

wrong operations. 

 

 

This sign has the meaning that customer will be injured by himself, if customer has 

wrong operations. 

 

1.2 CAUTIONS 

 

(1) Do not touch HIGH VOLTAGE PART of the backlight inverter while turn on. There is a danger of 

an electric shock. So that, be sure to check again before starting replacement work that the power is 
turned OFF. 

(2) Be sure to wait some time after turning power OFF before starting replacement work. There is a 

danger of an electric shock because the inverter is charged at a high voltage after working. 

 

(3) Be sure to wait some time after turning power OFF before starting replacement work. There is a 

danger of burn injury, because the lamp holder and high voltage section of the inverter are hot after 
working. 

(4) Take care not to injure yourself while treating the metal frame of the lamp holder. 
(5) Do not shock and press the LCD panel and the lamp holder. There is a danger of breaking, because 

they are made of glass. 

 

(6) The fluorescent lamp in the LCD module may be damaged in some cases. Take care not to injure 

yourself while treating the lamp. If the lamp is damaged inside, quality problems may occur, such 
as un-even brightness by pieces of broken glass left inside. In this case return it to NEC for repair. 

 

 

!

 

Summary of Contents for NL3224BC35-20

Page 1: ...r should consider the followings before replacing the lamp holder 1 This work can cause a lowering of the quality performance Even if the replacement work is performed in accordance with this manual NEC is unable to guarantee the lowering of the quality which is caused by customer s replacement work 2 Replacement of the lamp holder involves the handling of high voltage circuits If replacement was ...

Page 2: ...lacement work that the power is turned OFF 2 Be sure to wait some time after turning power OFF before starting replacement work There is a danger of an electric shock because the inverter is charged at a high voltage after working 3 Be sure to wait some time after turning power OFF before starting replacement work There is a danger of burn injury because the lamp holder and high voltage section of...

Page 3: ...ng rubber to avoid the damage for high voltage side of the lamp 5 Properly connect the adaptable plug backlight side to socket inverter side without incomplete connection After connecting be careful not to hook the lamp cables because incomplete connection may occur by hooking the lamp cables This incomplete connection may cause abnormal operation of high voltage circuit 6 Do not hook nor pull cab...

Page 4: ...Finger stalls glove 2 Grounding band earth band 3 Workbench which is covered with conductive mat workbench equipped to be prevent static charges can be used 4 Radio pliers tweezers 5 Replacing parts LCD Module Lamp holder set NL3224BC35 20 22 55LHS11 2 2 REGARDING THE LAMP HOLDER SET 1 One set consists of two holders ...

Page 5: ...owly gently and in a straight line pull out the lamp holder in the direction of the arrow B in figure 2 If the lamp was broken inside of backlight lamp carefully pull out the lamp holder If pieces of glass remain inside the enclosure carefully remove them 8 Slowly gently and in a straight line push in the lamp holder in the direction of the arrow C and lock portion A in figure 2 9 Replace the lamp...

Page 6: ...DOD PD 1261 2nd edition 6 B C Lamp Holder A Fig 2 Around the Lamp Holder Lamp Connector Fig 1 LCD module Lamp Connector Lamp Cable Lamp Cable Holder insert area Holder insert area LCD module ...

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