Service manual

S-25
035191
Figure S-10
Indicator Drive Schematic Diagram (Sheet 8 of 10)
R85
10.0K
R90
10.0K
R129
10.0K
4.75K
R84
4.75K
R83
R82
4.75K
4.75K
R94
PULSE SEARCH IND DRIVE CKT
AC LED DRIVE CIRCUIT
ALARM SILENCE INDICATOR DRIVE CKT
BATTERY IND DRIVE CKT
MEMBRANE PANEL CONNECTOR
VDDVREF
BTN_3
BTN_2
BTN_1
BTN_4
I207
I206
I205
VDD
CR19
1
3
1N914S
1
PWRIND-L
ACIND_L
CR21
1
3
1N914S
31
10K
RP4
1 2 3 4
8 7 6 5
1 2 3 4
8 7 6 5
RAL_SIL_IND
RBATT_IND
RPWR_IND
BATT_IND
PSRCH_IND
AL_SIL_IND
249
R97
VDD
Q12
2N3906S
2
3
1
2
3
1
RPWR_IND
Q14
2N3906S
2
3
1
2
3
1
VDD
Q13
2N3906S
2
3
1
2
3
1
Q15
2N3906S
2
3
1
2
3
1
RAL_SIL_IND
R103
249
249
R105
RPSRCH_IND
RBATT_IND
R106
249
PICPWR
PWR_BTN
CON_FLEX13
J5
13
9
8
7
6
5
4
3
2
11
10
1
12
13
9
8
7
6
5
4
3
2
11
10
1
12
BTN_5
RPSRCH_IND
VDD
PICPWR
I209
I208
I211
I210
I213
I212