JVC PD-42WV74 Service Manual page 46

4.8 ADJUSTMENT PROCEDURE
4.8.1 DISPLAY UNIT
Mesuring
Item
instrument
PDP POWER DC voltmeter
SUPPLY
VOLTAGE
VOLTAGE LABEL
NTSC NTSC/PAL
Va Vsc Vs Ve
XX XX XX XX
1-46 (No.YA029)
Test point
Va
Vsca
Vs
Ve
Vset
[SMPS PWB]
Vset
XX
L
Adjustment part
VA VR • After turning the power on, confirm that "NO SYNC" is
VSCAN VR displayed.
VS VR • Start making adjustment five minutes or later after
VE VR turning the power on.
VSET VR (1) Connect the DC voltmeter to test points Va, Vsca,
[SMPS PWB] Vs, Ve, and Vset, and GND on SMPS PWB.
(2) Adjust VA VR, VSCAN VR, VS VR, VE VR, and
VSET respectively so that their voltage becomes
the value in the voltage label attached to the panel.
VOLTAGE ADJUSTMENT POINT
V
S
Vs
Vsca
Vset
Va
V V
SET SCAN
Description
SMPS PWB
: Adjustment VR
V
A
: Test point
Ve
V
E