Circuit Description - ViewSonic VX2739wm-1 Service Manual

4. Circuit Description

CON1
CON3
CON7
Power Circuit：
Power board provided +5VD(CON1.1~CON1.2) and +5V (CON3~CON4),Which
+5V is for system and LCD Panel,+5VD provided for Audio AMP.
At AC power on status,Power off mode and standby mode,Power source only
provided +5V to TSUMO88GDI,Monitor total power consumption will be less the
1W.
The status for +5VD and +5V as below：
+5V will provide：
1. via Q4、Q3：VLCD(for LCD panel)
2. via U9 transferred to +3.3V(for TSUMO88GDI、audio AMP and system related
parts)
3. via U9 transferred to +1.8V(for TSUMO88GDI)
ViewSonic Corporation
CON5
CON8
CONFIDENTIAL – DO NOT COPY
19
CON6
J4 or
CON2
J7
J6
J3
VX2739wm-1
VX2739wm-CN