Safety Related Adjustment - Sony TRINITRON KV-13M10 Service Manual

SECTION 4
KV-13M10/MT1300/
RM-Y116 RM-Y123
KV-14R10/1460R
RM-Y116_RM-Y123
SAFETY RELATED ADJUSTMENTS
A BOARD
Ba R525 CONFIRMATION METHOD (HV HOLD-
DOWN CONFIRMATION) AND READJUSTMENTS
The following adjustments should always be per-
formed when replacing the following components
(marked with [@ on the schematic diagram).
1C502, IC601, Q554, Q555, D505, D506, D507, D510,
DY, C511, C513, C528, C531, R511, R519, R520,
R523, R525, R527, R557, R558, R559, R560, R617,
R618, T504 (FBT)
1. Preparation before confirmation
1) Turn the POWER switch ON, and receive
entirely white signal and set the PICTURE and
BRIGHT controls to maximum.
2) Confirm that the voltage of the check terminal of
TP85 is more than 90VDC when the set is
operating normaly with 120.042.0VAC supply.
2. Hold-down operation confirmation
1) Connect the currentmeter between the 7th pin of
FBT (T504)and the land of it with connect
polarity.
2) Receive White Signal and adjust the ABL
current to follows with the PICTURE and the
BRIGHT controls.
1040 + 100A
3) Confirm the voltage of A board TP-91 is 115.04
0.5VDC.
4) Connect the Digital Voltmeter and DC power
Supply via 18S 119 to TP-85.
5) Increase the DC power voltage gradually until
the Picture just blanks out.
Read the digital voltmeter indication.
Turn DC power Source off immediatery.
STANDARD
Less or equal to 124.5 VDC
8) Receive Dot Signal and adjust the ABL current
to follows, with the PIX and the BRT controls.
40+100/-50 vA
9) Repeat steps from (3) to (7).
STANDARD
Less or equal to 124.5 VDC
xl
~~
3. Hold-down readjustment
When step 2 is not satisfied, readjustment should
be performed by altering the resistance value of
R525 (a component marked with BA).
T504
FBT
B+ VOLTAGE CONFIRMATION AND ADJUSTMENT
The following adjustments should always be perform-
ed when replacing the following components.
(marked with [@ on the schematic diagram).
IC101, IC601, Q609, R030, R617, R618, R629, R630,
R636, R637
—
) Supply 130+%°V AC to with variable
autotrans-former.
2) Input an entirely monoscope signal.
3) Set the PICTURE control and the BRIGHT
controls in to initial reset.
4) Set to Service adjustment Mode.
5) Select PADJ with [1]and 4].
6) Adjust with [6] for the 63 level.
7) Confirm the voltage of A BOARD TP91 is less
than 123.0V DC.
8) If step 7) is not satisfied, replace the
components repeat above steps.
9) Supply 120+2.0V AC to with variable auto
trans former.
10) Adjust with |3] and {6]for the 115+0.5V DC.
11) Write into the memory by pressing
then :