Read Sony CPD-G420 / CPD-G420S / CPD-G520 / GDM-F520 Service Manual online
CR1 chassis (E)
3
1-6. Heater Voltage Regulator
The heater voltage regulator (IC011) generates 5V for the heater from 7V entered to the CN312 pin 7. The output voltage is
determined by the feedback from R078, 079, and 080. The 3.3V entered from CN312 pin 8 is entered to the IC011 pin 1 to control the
ON/OFF of 5V output (voltage of pin 1 3.3V: Output ON, 0V: Output OFF). The 5V output from IC001 pin 4 is sent to the pin 4 of
CRT socket (J001) through the CN315 and CN316.
1-7. E2P ROM for DDC
The E2P ROM for DDC (IC007, 009) makes communication for DDC1 and DDC2 with the connected PC via CN304 or 309, or
CN306, 307.
Click on the first or last page to see other CPD-G420 / CPD-G420S / CPD-G520 / GDM-F520 service manuals if exist.