Samsung PPM42S3 - PPM - 42S3 Service Manual page 10

2-3 Voltage Adjustment
Test Point
VR : Variable Resi sto r
Pin Connector
Fan power sour ce.
SMPS Volume Resistor Adjustment
Point 1
Point 4
Point 2
Point 5
Notes
1. When the SMPS-PCB is replaced, the Va, Vsc, Vs, Ve and Vset voltages must be checked and adjusted to the proper levels
indicated on the panel sticker.
Samsung Electronics
VR2
Vs
CN805 CN812
Ve
Va
CN804
Vscan
CN806
CN807
CN808
CN809
CN810
CN802
CN801
Point 3
Vs
Vset
(
SMPS
VR1
Va
Validate the SMPS
voltage
CN803
Point 1
Point 2
Point 3
Point 4
Point 5
Alignment and Adjustments
Output Va Vsc
Vo ltage
See t he labels attached on the base chassis
Adjust the SMPS voltage
using the VR(Var iable
Resistor)
Volume Resistor VR2
for "Vs" Adjustment
Volume Resistor VR1
for "Va" Adjustment
Volume Resistor VR6 is a Factory Setting Point. Don' t touch.
Test Point
for "Vs" Adjustment
CN 805 Pin No. 9, 10 or
CN 804 Pin No. 8, 9
Test Point
for "Va" Adjustment
CN 812 Pin No. 1, 2 or
CN 806 Pin No. 1, 2
Vs Ve Vse t
VR2
VR1
CN805 CN804
CN812 CN806
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