Sony KD-34XBR2 Training Manual page 87

18. Set the DC power supply to 16Vdc. More voltage (15.6Vdc) is required to start this IC because pin 18 is not
connected to a Vcc source.
19. Plug the AC cord to the Variac and bring up the voltage slowly as with the primary power supply. The second-
ary voltages in chart 2 will appear as you increase the AC input voltage. The secondary PS oscillator fre-
quency should remain stable at approx. 183kHz.
Note that at about 87Vac, the Primary power supply will suddenly turn ON full and its 11V line will energize the
Surge relay (click sound). This is normal, so do not be startled. The primary power supply will deliver these
voltages from CN6104 unloaded:
• CN6104/pin 1 (11V output) = 11.3Vdc;
• CN6104/pin 2 (7V output) = 7.4Vdc;
•
CN6104/pin 8 (6.5V output) = 6.9Vdc
19. Projection TV RA-5A Chassis Power Supply Board Tests
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