Ericsson T28s - Page 3

Trouble Shooting Guide, Standard
4/00021-2/FEA 209 544/19 E 3(29)
VLCD: DC voltage for the display that controls the contrast.
VRAD: DC voltage for the radio part except the synthesiser. 3.80 ±
0.20 V
V380B: DC voltage for the radio part. 3.80 ±
0.20 V
VRTC: DC voltage for the real time clock. 2.35 ±
0.15 V
VVCO: DC voltage for the synthesiser. 3.80 ±
0.10 V
I2C: Communications standard for two-way communication using only 2 wires,
clock and data.