Motorola Gm Series Detailed 6864115b62 A Manual

Controlhead GM380/1280 - PCB 8486178B03 / Schematics4-15
P6
SW0924P7
SW0925DOWN P3
MENU 1
SW09032
SW0904
SW0910
7
SW09138
SW0914 SW0901 SW0906
1V/1V
1V/2V
1V/3V3V/2V
3V/3V SW0917 SW0911
SW0912
0V/0V
3V/4V 2V/0V
SW09180
SW0919
1V/4V3V/0V
RIGHT12 P2
LEFT
4
SW09085
SW09092V/1V
2V/2V4V/0V
4V/1V
4V/2V
4V/3V
4V/4V 789
0 * P1
3
4 P2
3
SW0905P4
P1
P3 P4 EXIT
6
9
SW0915 SW0902 SW0907SW0916 SW0921
SW0922
*
2V/3V
2V/4V UP5
0V/1V
0V/2V
0V/3V
0V/4V1V/0V
6
#
P5 P6 P73V/1V
#
SW0920
P5
SW0923
4
P4 5
P5
6
P6
7
P7 8
P8...

4-16Controlhead GM380/1280 - PCB 8486178B03 / Schematics
NU Q0964
MC33072 U0942-26
5 78
4 Q0962
NU 4.7K
NU R0967
100K R0969
R0977
10 10 R0975
0.1uFC0965
D0958 D0946
NUD0960 NU
NU NU D0948 10 R0957D0981 68K R0945
2.2uF C0943R0949
100KD0947
R0948
4.7K
R0950
NU
NU 100K
NU D0990
NU D0988 D0943
D0952
D0986NU
D0974
NU D0962
NU D0950
NU
D0984NU
R0974 NU
NU 10KNU R0972
10K D0983
D0993
green R0955
10 C0945
0.1uF
R0954
10KR0952
NUNU 10K 33K R0944 10K R0942
NU
Q0944 NU
U0942-1
MC330722
3 18
4 NU
NUNU Q0942R0973...

Controlhead GM380/1280 - PCB 8486178B03 / Schematics4-17
ANALOG_INPUT_2
J0821
GND
VDD
D0
D1
D2 MIC
Backlight_Anode GREEN
Backlight_Anode RED
CS1
CS2
A0 (Command)CONNECTOR HANDSET_AUDIO
ANALOG_INPUT_3
D3
D4
D5 CONTROLHEAD
CONNECTOR
GND
Voltage_Sense
Backlight_Cathode RED
Backlight_Cathode GREEN
GND
GND
GND HOOK
GROUND
Temp_Sense
Reset Temp_Sense
Voltage_Sense FLT_A+
5V
R/W (WR)
E  (RD) PTT_IRDECODER
BUS+
D6
D7 J0801LCD MODULE
R0822
0
NU
470pF
NU C0804
C0835
100pF 100pF C0834
NU 100pF
NU NUC0833
100pF...

4-18Controlhead GM380/1280 - PCB 8486178B03 / Schematics4.1 Controlhead PCB 8486178B03
Parts List
Circuit 
RefMotorola
Part NoDescriptionC0803
2113741F17
470pF 50V
C0804 2113741F17 470pF 50V
C0805
2113740F49
82pF 5% 50V
C0807 2113741F17 470pF 50V
C0811
2113741F17
470pF 50V
C0812 2113741F17 470pF 50V
C0813
2113741F17
470pF 50V
C0815 2113741F17 470pF 50V
C0816
2113741F17
470pF 50V
C0817 2113740F49 82pF 5% 50V
C0851
2113741F49
10nF 50V
C0856 2311049A40 TANT CP 2.2uF 10% 10V
C0861
2113743E20
100nF 16V
C0862...

Controlhead GM380/1280 - PCB 8486178B03 / Schematics4-19
* Motorola Depot Servicing only
Reference designators with an asterisk indicate 
components which are not fieldreplaceable 
because they need to be calibrated with 
specialized factory equipment after installation. 
Radios in which these parts have been replaced in 
the field will be off frequency at temperature 
extremes.
R0971
0662057A73
10k 1/16W 5%
R0972 0662057A73 10k 1/16W 5%
R0973
0662057A73
10k 1/16W 5%
R0974 0662057A73 10k 1/16W 5%
R0975...

4-20Controlhead GM380/1280 - PCB 8486178B03 / Schematics