Acer SPECTRUM AL801 Service Manual page 23

D) FUNCTION TEST CIRCUIT:
120KΩ
10Ω
VT-181
120KΩ
10Ω
VT-181
1
CON2
2
CON3
1
CON1
2
1 2 3 4 5
22
CON4 1
2
CON5
1
2
120KΩ
10Ω
VT
120KΩ
10Ω
VT