Service Manuals, User Guides, Schematic Diagrams or docs for : LG Monitor LG_42PG20_Block_Diagram_[SCH]
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Y-SUS DRIVE WAVEFORM
RAMP 150V To Peak 42PG20 CIRCUIT INTERCONNECT DIAGRAM Z-SUS
4mS
Y-SUS TP See next page for
waveforms
VZ Bias
P302
Remove all input signals
Pin State Ref# Z-SUS TP
from the unit so the
P812 P813 Menu Off 10
menu will be the only 11
Pin STBY Run Pin STBY Run No Load P812 Menu On 11
video to be found on the
1 0V *195V 1, 2 0V 16.5V 16.5V Menu Off 08
SUS-DN 110uS LVDS cable. 12
P1 2 0V *195V 3, 4 Gnd Gnd Gnd Menu On 09
NOTE: White noise from Ch1 50.0V 100us 220Vp/p
3 0V 0V 5, 6 NC NC NC Menu Off 12
Ch1 100V 100us 540Vp/p the tuner may cause 13
4 n/c n/c 7, 8 Gnd Gnd Gnd Menu On 13
these signals to vary. 52V (AC) rms
Waveform
5 0V 0V 9, 10 5V 5V 5V VS Adj These were taken with Menu Off 06
P2 62V~57V (AC) rms (Dark to White) 14
6 0V *65V 11, 12 5V 5V 5V the unit set to Menu On 07
P201 R951 VA Adj
7 0V *65V 13, 14 Gnd Gnd Gnd component with no input Menu Off 14
VR602 Y-SUSTAIN Pin Label STBY Run 15 P2
VR601 R901 Menu On 15
TP Ramp 1 Vs 0V *194V 8 0V 0V 15, 16 Gnd Gnd Gnd signal.
2 Vs 0V *194V 9 0V 5V 17 .15V 5V 5V Menu Off 04
16
Set-dn FS202 3 nc nc nc Menu On 05
10 0V 5V 18 5V 5V 5V
(VS) 4 Gnd 0V 0V SMPS PCB Menu Off 16
125V 4A 19 0V 3.73V 0V 19
P204 5 Gnd 0V 0V POWER SUPPLY Menu On 17
P100
20 0V 3.2V 0V
No IPMs
No IPMs
6 Va 0V *65V Menu Off 02
Glass
P3 21 0V 3.24V 0V 20
Z-SUSTAIN
7 Va 0V *65V Menu On 03
8 Gnd 0V 0V
22 0V 0V 5V
Menu Off 18
9 M5V 0V 5V A/C IN P813 21
Menu On 19
No IPMs
P4 10 M5V 0V 5V
Menu Off 00
P201 *Variable according to Label CN101 22
Menu On 01
Y-SUS Drive
-VY TP
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