Sony Trinitron KV-32TW77 - Safety Related Adjustments (Continued); B+ Voltage Confirmation Procedure

32TW77/32TW78 |
RM-Y118
[B+ VOLTAGE CONFIRMATION
The following adjustments should always be perform- . |
ed when replacing IC601 and R635. : i dona T501 | r
1) Supply 130+2.0V AC to with variable autotrans- j PM501 | |
former.
Ls)
J
ammeter
|
|
2) Receive entirely monoscope signal. 3.0 mA de L J
3) Set the PICTURE control and the BRIGHT
controls in to initial reset.
4) Confirm the voltage of TP91 is less than 137.0V
DC. ‘
5) If step 4) is not satisfied, replace IC601 and R635
repeat above steps.
digital
multimeter
regulated-de
power supply
HV ammeter
digital
3.0 mA de range
multimeter
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