LG GC-B379S*QA Service Manual page 28

TEST mode function
FUNCTION DESCRIPTION
1. Power Circuits
PARTS VA1
VOLTAGE 230Vac
TRANS secondary side is composed of electric power circuits for RELAY driving electricity (12Vdc) and for supplying electricity to
MICOM and IC (5Vdc). The voltage in each part is as follows.
CE2 CE3
12Vdc 5Vdc
MICOM FUNCTION & PCB CIRCUIT EXPLANATION
28
If Short made in TEST terminal, the
TEST 1 condition will maintain.
7
Internal display Test 2 Mode