Sony TRINITRON KV-32S12 Service Manual page 22

EQUIPMENT MEASUREMENT ADJUSTMENT ILLUSTRATION AND SHAPE
ADJUSTMENT ITEM AND PROCEDURE POSITION LOCATION AND NUMBER
AND SIGNAL
3. Hold -down readjustment
When step 2 is not satisfied, readjustment should be performed
by altering the resistance value of *Resistor (a component
* R524
marked with b4 ).
procewcccescoecs
esewowwoeescces
bd *RESISTOR CONFIRMATION METHOD (B+ HOLD-
DOWN CONFIRMATION) AND READJUSTMENTS
The following adjustments should always be performed when
replacing the following components (*marked with ld on the *(@ marked parts
schematic diagram). PMS501, R338,
R511, R632, R645,
R650
1.Preparation before confirmation
1) Remove the *resistor on the D board and connect a
*variable risistor between pin@ of IC601 and B+ line.
2) Supply *AC voltage to with *variable auto-transformer. * Variable auto-
*R635
*RV1 : about 4.7 kQ - 10kQ
*120+ 2.0 VAC
transformer.
RV1 (4.7k-10k)
(R635) 4
es! [Pico
T501 FBT
O