Lesson 5 - Jumpering Techniques (basic)

materials needed:

soldering iron 20 watts 2 pcs

soldering stand 2 pcs

soldering lead

jumper wire or magnetic wire

soldering paste

BACKLIGHTING PROCEDURE

1.) Get the mapping of the pcb backlight.

ex. 3310

LCD LED

KEYPAD LED

2.) Get the polarity of the bulb.

3.) Install backlight according to their polarity and their pcb mapping.

note: do not mix high resistance bulb to low resistance bulb.

types of connection:

a.) series connection

b.) parallel connection

activity:

1. install backlight at flat surface board

2. install backlight at hanged surface board

3. make a jumper