Release
1.1
Technical Documentation
10/2005
TD_Repair_L2.5L_SL75_R1.1.pdf
Page 11 of 11
Fault Symptoms
Customer: GRT:
Main keypad illumination does not work
Current measured failed
LED Problems
Watch for oxidation and
damaged pads of the
LED’s
caused by customer
Back to customer
without repair
SCRAP
- has to be send
separately to WSC
not
okay
okay
Check the status of the
battery connector
visually
Use the diode test
function of a multimeter
to check the status of
the diode. The typical
voltage drop on the
diode is 1.7 V when
testing the diode
function with the
multimeter.
Exchange
keypad LED’s
Continue with
higher repair level
okay
not
okay
not
okay
- check for twisted or
bent contacts
- check for dry joints
LED WHITE TOP
Use soldering iron to remove defective component. Avoid excessive heat! Watch surrounding
components! Resolder new component afterwards.
Attention: Remove Metal Dome Sheet before!!!
E-commerce order number: L36840-L2099-D670
E-commerce order name:
LED WHITE TOP
Soldering temperature:
~ 360°C TIP Temp.
IRIS Diagnose Code:
36000 Keys/Illumination
Company Confidential
2005©BenQ
