Motorola Gm Series Detailed 6864115b62 A Manual

							Controlhead GM380/1280 Troubleshooting Flow Chart 3-7
3.0 Controlhead GM380/1280 Troubleshooting Flow Chart
3.1 On/Off 
R0854
Pin TAB1
when pressed
=5V ?
J0801 PIN2
> 10V ?
J0801 PIN2
 =5V?
Check / Replace
Q0853 / R0853
YES
NO
YES
NO
YES
NOCheck / Replace
D0852 / R0852
Check / Replace
Volume Pot R0854
Check / Replace
Q0851
Radio can not be switched on via ON/OFF Volume Knob
YES
R0854
Pin TAB
= 5V?NOCheck / Replace
R0855 / VR0855 / D0855
C0856
Press and hold
On / Off
Volume Knob 
						

							3-8TROUBLESHOOTING CHARTS
3.2 Microprocessor 
Power Up Alert Tone is audible on external speaker but volume
knob does not operate and no indicators are on
TP0876
=5V ?
NO YES
U0871
Pin 73 EXTAL
= 8 MHzTP0866
= 0V NO
Check / Replace
R0873 / U0873 /
U0871Check / Replace
R0866 / C0866 / 
Q0866 / R0863
Check / Replace
R0861 / R0862 / D0861
C0861 / C0862 / U0861
C0863 / C0864 / C0865 1
NO
YESYES 
						

							Controlhead GM380/1280 Troubleshooting Flow Chart 3-9
3.3 Microprocessor 
1
Data Signal
on J0801
Pin 5 BUS+
?
Data Signal
on TP0877
SCI_RX
?
Data Signal
on TP0878
SCI_TX
 ?
Check / Replace
D0872 / R0887
YES
YES
YES
NO
NO
NOCheck / Replace
U0871
Check 
Radio Controller
Check / Replace
R0888 / R0889
Measure with scope
while rotating
Volume Pot 
						

							3-10TROUBLESHOOTING CHARTS
3.4 Display 
TP0973
Voltage Sense
between
 2V and 2.4V
?
Activity on
Address & Data lines
A0 / D0...D7 / CS1
of U0971
?
NO
YES
YES
NO
Check / Replace
Flex connection
Resistors on Address & Data
lines and LCD Module
Check / Replace 
LCD Module
Check for shortage
U0871
Power Up Alert Tone is audible, volume knob does operate,
indicator/backlight is on but nothing is seen on the display. 
						

							Controlhead GM380/1280 Troubleshooting Flow Chart 3-11
3.5 Keypad Backlight 
U0871 Pin 25
is toggling ?
Base of Q0943
> 0.7V ?
Collector of
Q0943
>5V & < 11V
 ?
Check / Replace
Q0941 / R0955 / R0957
YES
YES
YES
NO
NO
NO
Check / Replace
Q0943 / U0941 / R0941
R0943 / R0949 / R0951
Check for shortage 
U0871
Check / Replace
R0945 / C0943 / R0947
Power Up Alert Tone is audible, volume knob does operate,
display is on but no keypad backlight. 
						

							3-12TROUBLESHOOTING CHARTS
3.6 Display Backlight 
U0871 Pin 24
is toggling ?
Base of Q0963
> 0.7V ?
Collector of
Q0963
>5V & < 11V
 ?
Check / Replace
Q0961 / R0975 / R0977
YES
YES
YES
NO
NO
NO
Check / Replace
Q0963 / U0941 / R0961
R0963 / R0969 / R0971
Check for shortage 
U0871
Check / Replace
R0965 / C0963 / R0967
Power Up Alert Tone is audible, volume knob does operate,
display is on but no display backlight. 
						

							Chapter 4
CONTROLHEAD PCB / SCHEMATICS / PARTS LISTS
1.0 Allocation of Schematics and Circuit Boards
.Table 4-1   Controlhead Diagrams and Parts Lists
PCB :
Controlhead GM140/340/640
8486146B07 Main Board Top Side
8486146B07 Main Board Bottom SidePage 4-3
Page 4-3
SCHEMATICS
Sheet 1 of 2
Sheet 2 of 2
Page 4-4
Page 4-5
Parts List
8486146B07Page 4-6
Table 4-2   Controlhead Diagrams and Parts Lists
PCB :
Controlhead GM160/360/660
8486155B06 Main Board Top Side
8486155B06 Main Board Bottom SidePage 4-7
Page 4-7
SCHEMATICS
Sheet 1 of 4
Sheet 2 of 4
Sheet 3 of 4
Sheet 4 of 4
Page 4-8
Page 4-9
Page 4-10
Page 4-11
Parts List
8486155B06Page 4-12
Table 4-3   Controlhead Diagrams and Parts Lists
PCB :
Controlhead GM380/1280
8486178B03 Main Board Top Side
8486178B03 Main Board Bottom SidePage 4-13
Page 4-13
SCHEMATICS
Sheet 1 of 4
Sheet 2 of 4
Sheet 3 of 4
Sheet 4 of 4
Page 4-14
Page 4-15
Page 4-16
Page 4-17
Parts List
8486178B03Page 4-18 
						

							4-2controlhead PCB / Schematics / Parts lists 
						

							Controlhead GM140/340/640 - PCB 8486146B07 / Schematics4-32.0 Controlhead GM140/340/640 - PCB 8486146B07 / Schematics
D0871 D0872
D0873
D0874
D0875D0876 D0877D0878D0879
D0881 D0884
D0885 D0886
D0887
D0888 2 3 5 7 9
864 10
J0811
JU0852 JU0853
JU0854 4
1
235
R0823
S0861
S0862
S0863 S0864S0865
S0866
ZWG0130114-A
C0802
C0803
C0804
C0805
C0806
C0808
C0809
C0810C0811
C0813
C0815
C0816
C0817
C0818C0819
C0821
C0822 C0823C0824
C0831 C0832 C0833
C0843
D0821
D0822
D0831 12
J0801
1
2
P0801
Q0821
Q0822
Q0823
Q0841 Q0843
Q0871
Q0872
Q0873
Q0874
Q0875
Q0876
Q0877 Q0878
Q0879
Q0881
Q0885
R0810
R0811
R0812
R0813
R0814
R0815 R0816 R0821
R0822
R0824 R0825
R0831
R0832
R0833
R0834 R0835
R0836 R0837
R0838
R0839R0841
R0842R0843
R0844
R0845R0847
R0849 R0852 R0853R0854
R0861
R0862R0864
R0866R0867R0871 R0872
R0873
R0874
R0875
R0876R0877 R0878
R0879
R0880R0881
R0885 TP0831
TP0832TP0833
TP0834TP0835
TP0836
TP0837 TP0838
1
4917
33
U0831
1 4 5
8
U0832
3U0833
U0835 VR0811
VR0816 VR0817
VR0821VR0822
VR0823 64 1
1
ZWG0130113 B
MOTOROLAc
8486146B07-0
 Controlhead GM140/340/640  - PCB8486146B07ZWG0130114-A    Top Side
ZWG0130113-B   Bottom Side 
						

							4-4Controlhead GM140/340/640 - PCB 8486146B07 / Schematics
HOOK
GROUND
MIC 10 GM300CONTROL HEAD
PTT_IRDECODER 7CONNECTOR
8J0801
9
MICROPHONE
CONNECTOR
SCI_RX BOOT_VPP J0811
RESETBOOT_MODE WARIS
HANDSET_AUDIO 1
CONTROLLER
KEYPAD ID CONTROL HEAD ID
SCI_TX EXT_KP_ROW EXT_KP_COL
FLT_A+
4 5 6
BUS+ 2 3
5V
VR0822
5.6VR0843
2.2K
NU
GND
INPUT RESET_
7
U0835
MC33464N-45ATRJ0801-8
JU0853
SWITCH C0833R0833
0.1uF
2 47K10K R0844
55
VDD
22
VRH
21
VRL 23
VSS1
VSS2 24
49
VSS3
45
XIRQ 33
XTAL
PE3_AN3 19
PE4_AN4 14
16
PE5_AN5
PE6_AN6 18
PE7_AN7 20 43
RESET28
STRA_AS
30
STRB_RW*
PD1_TXD 50
PD2_MISO 51
PD3_MOSI 52
53
PD4_SCK
PD5_SS* 54PE0_AN0 13
PE1_AN1 15
PE2_AN2 17PC1_AD136
PC2_AD237
PC3_AD338
PC4_AD439
40
PC5_AD5
PC6_AD641
PC7_AD742
PD0_RXD 47
PB1_A911
PB2_A1010
PB3_A119
PB4_A128
7
PB5_A13
PB6_A146
PB7_A155 PC0_AD034 64
PA1_IC2
63
PA2_IC1
62
PA3_OC5_OC1
59
PA4_OC4_OC1
58
PA5_OC3_OC1
57
PA6_OC2_OC1
56
PA7_PA1_OC1
PB0_A812
NC3 4
NC4 26
NC5 3235
NC6
44
NC7
NC848
60
NC9
1
PA0_IC3 29
CLK_E
31
EXTAL
46
IRQ
27
MODA_LIR*
25
MODB_VSTBY
NC1 2
NC1061 3
NC2MC68HC711E9
U0831
7 J0801-11
J0801-7
3 TP0832
50K
NEG
POS
TAB TAB1VARR0823
4.7K R0824 J0811-5
1 0Q0843
NU R0835
100
0 R0839 R0847
22
J0811-4
270 R0814
R0815
0.1uF C0832 13K
C0831
3.3uF J0811-1
1 C0823
.01uF
2
0 62
C0809
NU 82pF
Q0823
D082210 R0813
1 C1
3
C2 2
GND
4 R0812
CSTCC8.00MGU0833 22
5.6V
5
VR0821
100KR0853 8 5.6V VR0823
J0811-10
0
P0801-2
5 4 J0801-9
TP0837 INPUT 2
NC1 3
NC2 5NC36
NC47
8
NC5 RESET1 U0832
MC33064
GND
4
Q0821J0811-6J0801-10
J0801-6
JU0852
SWITCHJU0854 6
1
SWITCH C0804
470pF
0
R0852
100K C0817
82pF J0811-8
7R0845
4.7K NU VR0811
33V
470pF
NU 470pFC0818
C0816
33K R0837NU C0808
470pF 470pFC0806
10K
3R0841 R0811
51K
J0811-3 J0811-2
1MEGR0831 VR0816
20V13K
J0811-9R0810
4
TP08331
10K R0821
47K J0801-14
R0849 P0801-1
2.2K R0832J0801-3 J0801-5
TP0838 TP0834 NU
470pF
NU C0810
470pF
32
C0819
100K R0854
6
1
J0801-12
R0838
10K J0811-7
R0834
270 20V VR0817
2.2uFJ0801-4
C0822
470pF
NU5
24K
C0821R0816
R082251K
470pF C0815C0811
470pF
TP0831
R0836
10K TP0836J0801-13
J0801-1
NU J0801-2
470pF C0802 C0803
470pF 470pF
C0843C0813
TP0835 470pF
NU C0824
.01uFR0825
1K D0821C0805
82pF
Q0822R0842
47KQ0841
INT_KP_ROWINT_KP_COLUSW_5V 5V
5V 5V
5V FLT_A+
BUS+EXT_KP_ROW MIC EXT_KP_COL
FLT_A+
D08315V
CH_KP_ID(0:7)
LED_CNTRL(0:8) CH_REQUEST
5VCH_REQUEST 5V
5V 5V5V
PTT_IRDEC HOOK
ON_OFF_SENSE ON_OFF_CONTROL
5V
USW_5V VOLUMEVOLUME EXT_KP_ROWEXT_KP_COL PTT_IRDECFLT_A+
FLT_A+5V
5V PTT_IRDECSCI_TX
SCI_TXBUS+ 5V
5V
BL_GREEN ON_OFF_SENSE 5V
HOOK 5V
5VHANDSET_AUDIO
ON_OFF_CONTROL FLT_A+
MIC BUS+ HANDSET_AUDIO
5V
Controlhead GM140/340/640 - Schematic Sheet 1 of 2
ZWG01300239-A