Audio Check - Acer AL1917x Service Manual

Acer
5.4.4 EDID data: (For example)
For Hannstar HSD190ME13 Panel
00 FF FF
01 0F 01
14 4F 54
01 01 01
13 00 78
53 0E 00
30 30 30
00 41 4C
For LPL LM190E03-TLB1/TLB4 Panel
00 FF FF
01 0F 01
11 50 54
01 01 01
13 00 78
53 0E 00
30 30 30
00 41 4C

6. AUDIO CHECK

6.1 Audio Sound Check
6.1.1.1. Apply audio source of test program, (1)voice "LEFT" and "RIGHT" ;(2)500mVrms sine wave
that sweep from 200Hz to 20 KHz, into audio input (light blue), it should be that L speaker sounds
while "LEFT" and R speaker sounds while "RIGHT"
6.1.1.2. Set the volume control (on OSD) at max (100%). It should be that no buzz or rattling sound
occurs over the sweep frequency range.
6.2 Audio control test
6.2.1.1 When OSD is not on screen, press key " ►"or "◄ ", volume adjustment bar appears on screen
and value will grow or decrease and sound volume of speakers should be changed.
If the functional test had been passed, adjust volume bar to be at 90% before exit OSD.
After inspection, set the audio control out of OSD.
FF FF FF FF
03 08 26 1E
BF EF 00 01
01 01 01 30
2D 11 00 00
0A 20 20 20
30 30 30 30
31 39 31 37
FF FF FF FF
03 08 26 1E
BF EF 00 01
01 01 01 30
2D 11 00 00
0A 20 20 20
30 30 30 30
31 39 31 37
00 04 72 63
78 E8 FD 56
01 01 01 01
2A 00 98 51
1E 00 00 00
20 20 20 00
30 30 30 30
0A 20 20 20
00 04 72 63
78 E8 A2 A5
01 01 01 01
2A 00 98 51
1E 00 00 00
20 20 20 00
30 30 30 30
0A 20 20 20
18
Service Manual
AD 00 00 00
A5 53 4A 9D 24
01 01 01 01
00 2A 40 30
FD 00 38 4B
00 00 FF 00
0A 00 00 00
20 20 20 00
AD 00 00 00
A3 57 4C 9D
01 01 01 01
00 2A 40 30
FD 00 38 4B
00 00 FF 00
0A 00 00 00
20 20 20 00
00
01
70
1E
30
FC
39
00
25
01
70
1E
30
FC
39