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Safety Related Adjustment - Sony TRINITRON PVM-14L5 Service Manual

Color video monitor.
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This section explains the adjustment procedure when
safety related component(s) is replaced. Perform the
following adjustment when the safety related
component(s) is replaced.
[Preparation]
Equipment Required
. Oscilloscope
Sony Tektronix 2465 or equivalent (with bandwidth of
350 MHz)
. NTSC/PAL/SECAM component signal generator
Sony Tektronix TG2000 +AVG1 (option module)
+AWVG2 (option module) or equivalent
. Monoscope signal generator
ShibaSoku TP22AX or equivalent
. VG (programmable video signal generator)
VG814 or equivalent
. DC power supply
. Digital VOM
Advantest TR6845 or equivalent
. Slide induction transformer
. High tension voltmeter
. Ammeter
. Luminance meter
Minolta CA-110 or equivalent.
If the Minolta CA-110 is not available, perform the
measurement by visual inspection by comparing the
monitor that has already been adjusted earlier with the
monitor that you want to adjust.
n
Start the following adjustments after 5 minutes have
passed after the main power is turned on.
PVM-14L5/20L5/D14L5A/D20L5A
Section 3

Safety Related Adjustment

When the parts (with a
shown below are replaced, confirm the matters described
in items 3-1 and 3-2 shown below.
G board (HV protector circuit)
G board (IK protector circuit)
G board (HV regulator circuit)
D1 board (HV regulator circuit)
mark on the circuit diagram)
..... D501, D516, IC502, IC503, IC602, PH602, Q607,
Q609, Q610, Q613, R509, R510, R511, R514,
R515, R516, R565, R638, R640, R653, R654,
R663, T502 (FBT)
..... D514, D625, IC502, IC505, IC602, PH602, Q607,
Q609, Q610, Q613, R526, R527, R528, R529,
R530, R531, R545, R546, R547, R548, R549,
R551, R552, T502 (FBT)
..... IC504, R518, T502 (FBT)
..... IC1509, IC1510, R1568, R1577, R1578, R1579,
R1580, R1581
3-1

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