Epson PX-8 - Page 50

Fig. 2-21 is a photograph of the major voltage
waveforms.
(Top) Measured at IC 140, pin 7
(Center) Measured
at IC 140, pin 6
(Bottom) Measured
at diode, anode
REV.-A
5V 10V
>10",5
5V
Fig.2-21 Major Voltage Waveforms of LCD
Drive Power Regulator Circuit
2-26