Multitone RPR 551IS - Page 91

VSS
SBY
IC2
1
3
5
7
9
11
DB4
DB6
IC1
2
4
6
8
10
12
V
DD
RS
E
DB5
DB7
LAMP
1
12
6
LCD1 BOARD
MAIN BOARD
DISPLAY
SCREEN
PSG/10447/1
RPR 550IS Series
TM1188 Issue 1 Page 5 - 21
Figure 6: Display Connections Between LCD and Main Board
Table 6: Display Connections
PIN IC3 LCD1 REMARKS
11V
SS
0V
2 10 3 SBY
3 5 IC-2 ON icon oscillator (from TR18)
416 7DB4
514 9DB6
6 11 IC-1 ON icon oscillator (from TR18)
72V
DD
4.75V nominal
842 4RS
943 6E
10 15 8 DB5
11 13 10 DB7
12 12 Not connected