Measuring Instrument - JVC PD-42V31BJE Serviceanleitung

4.7 ADJUSTMENT PROCEDURE
4.7.1 DISPLAY UNIT
Measuring
Item
instrument
POWER DC voltmeter
SUPPLY
VOLTAGE
SMPS PWB voltage adjustment point
V
S
Vs
Vsca
Vset
Va
V V
SET SCAN
Voltage label
NTSC
Va Vsc
XX XX
1-44 (No.YA013)
Test point Adjustment part
[SMPS PWB] [SMPS PWB]
Va VA VR
Vsca VSCAN VR
Vs VS VR
Ve VE VR
Vset VSET VR
: Voltage adjustment VR
V
A
: Test point
Fig.1
NTSC/PAL
Vs Ve Vset
XX XX XX
SMPS PWB
L
Fig.2
CAUTION:
•
Confirm the display after the power supply is turned on
on the screen as [NO SYNC].
(1) Connect the DC voltmeter to the test point < Va >, < Vsca >,
< Vs >, < Ve >, < Vset > and < GND > on the SMPS PWB.
(See Fig.1)
(2) Adjust < VA VR >, < VSCAN VR >, < VS VR >, < VE VR > and
< VSET VR > so that the < Va >, < Vsc >, < Vs >, < Ve > and
< Vset > voltage coincides with the values in the voltage
label.
Ve
V
E
Description