Motorola MCS 2000 Service Instructions Manual page 167

10-19
SW_B+
VCC
U0650
D0730
2 INPUT
R0651
3 1 OUTPUT 3
1
10
C0690 C0651
C0650 2 GND
10uF .220uF 10uF
D0659
VCC
U0660
MC33064
2 1
INPUT RESET
7
NC
8
NC
J0650-17
A+
17 SW_B+
A+
18
SW_B +
R0663
7
ANALOG_GND
10
13
DIGITAL_GND
3
RESET
15
SB9600_BUS +
4
SB9600_BUS -
10
WE
14
SB9600_BUSY
12
KI D
11
KEY/FAIL
9
MIC/ON_OFF
2
SPKR -
R0664 0
1
SPKR +
R0665 0
8
HANDSET_AUDIO C0653 C0654 C0655 C0656 C0657 C0658 C0659
470pF 470pF 470pF 470pF 470pF 470pF
5
NC
6
NC
16
NOTE: R0664 ONLY MOUNTED IN SPEAKER MICROPHONE CONFIGURATION.
NC
R0665 ONLY MOUNTED IN HANDSET CONFGURATION (SDLN4192A)
ONLY ONE OF R0664 AND R0665 MUST BE MOUNTED.
Figure 10-7. Control Head Model II SChematic Diagram - 2 of 2
December 6, 2004
1 2 3 4 5
VCC VCC
VCC
R0678
R0679
10K
4.7K
R0684
Q0653
3906
4.7K
Q0654
R0676
R0680
4.7K
10K
5.6V
C0662
R0677
2K 470pF
VCC
C0666
0.1uF
VCC
11
CLK
1
RESET
74HC273
R0683 0 3 D0 2
Q0
1 4 D1 5
47K Q1
2 7 D2 6
Q2
3 8 9
D3 Q3
4 13 D4 12
Q4
5 14 D5 Q5 15
6 17 D6 16
Q6
Q0655
7 18 D7 19
R0681 Q7
22K
C0685
D0660 .01uF
R0682 C0663
5.6V
10K 470pF
R0732
51 / 1W
C0660 C0661
470pF 470pF 470pF VCC
R0689
6 7 8 9 10 11 12 13 14 15
A+ A+ A+
D0662 D0663 D0718
YELLOW RED
GREEN
D0719
D0726
R0703
YELLOW RED
330
Q0658
Q0657 Q0659
R0706
R0704 R0705
390 470 390
U0654
TP4
R0733
R0744
4.7K
3.3K
D0721
D0666 D0722
5.6V 5.6V
5.6V
R0690
4.7K 100K
D0661 R0691 C0667
20V 47 K 4.7uF
16
VCC
VCC
VCC
R0721
6
2.2K
EN
10
A
9 U0657
R0722 B
Q0661
74HC4052
3906 12
10K
X0
14
X1
15
X2
11
X3
1
Y0
5
Y1
2
Y2
D0664 4
Y3
R0723
5.6V
4.7K R0724
10K
Q0662
3906
VCC VCC
R0725
4.7K
6
EN
10
A
9
B U0658
74HC4052
12
Q0663
X0
14
R0726 X1
D0665
15
X2
11
5.6V
10K X3
1
Y0
R0727 5
Y1
2.2K 2
Y2
4
Y3
VCC
6
EN
10
A
9
B U0659
74HC4052
12
X0
14
X1
15
X2
11
X3
1
Y0
5
Y1
2
Y2
4
Y3
5
MIC/ON_OFF
2
SPEAKER-/KEYLOAD
8
SPEAKER+/HANDSET_AUDIO
C0674 C0675 C0676
470pF 470pF 470pF
MAEPF-28091-O
Chapter 10: Digrams and Parts Lists:
SW_B+
R0729
470
VCC
1
Q0664 OPTION_SW_B+
MJD210
R0728
10K
R0730 C0684
47K .220uF
Q0665
C0677
R0731 2.2uF
22K
13
X
6
3
Y PTT/BUS-/WE
D0667
5.6V C0678
470pF
4
GND
X 13
3
Y 3
MONITOR/BUSY/KID
D0668
C0679
5.6V
470pF
13 7
X AUX/BUS+/KEY_FAIL
D0669
C0680
470pF
Y 3 470pF
5.6V
P0651-7
68P81083C20-D