Sony TRINITRON KV-27V20 Service Manual page 26

ADJUSTMENT ITEM AND PROCEDURE
B+ VOLTAGE CONFIRMATION
The following adjustments should always be performed when
replacing the following *components.
1) Supply *Voltage AC to with *variable auto-transformer.
2) Input an entirely *signal.
3) Set the PICTURE control and the BRIGHTNESS control
to adjustment.
4) Confirm the voltage of *TP is less than *Voltage DC.
5) If step 4) is not satisfied, replace the *components repeat
above steps.
EQUIPMENT MEASUREMENT ADJUSTMENT
AND SIGNAL POSITION LOCATION
*1C643, R661
* Variable auto-
transformer
*Monoscope
* PICTURE,
BRIGHTNESS
schedess initial reset
*G Board CN641
Pin 1 - ground
ILLUSTRATION AND SHAPE
AND NUMBER
*130 *3° VAC (except 29V35C/34V35C)
*220 *$° VAC (29V35C/34V35C only)
*Less than 136.5 VDC