Troubleshooting Chart 1-2 (2 Of 3), Failure Codes - Motorola MCS 2000 Service Instructions Manual

9-4

Troubleshooting Chart 1-2 (2 of 3), Failure Codes

Fail No
1
01/90
From Sheet 1
Yes
Voltages
Yes
on J0403-5, 6,18
per Chart
14
No
Repair or
Replace J0405
Clock
No
signal on
Clock Distribution
U0103-34
Chart 1-9
Yes
Repair or
No
U0103
Replace U0103
OK?
Yes
No
U0104 Repair or
OK? Replace U0104
Yes
GOTO SB9600
Bus Rx Chart 1-10
Yes
DATA on
U0105-13 U0105
No
GOTO SB9600
Bus Rx Chart 1-10
December 6, 2004
Error
01/02
Yes
GOTO
J0405
Yes
Control Head
OK?
Chart 1-8
No
Program
codeplug
GOTO
No
Error
Problem
01/02
Fixed
Yes
No DATA on No
DATA on
U0105-13 U0103-63
Yes
Yes
Check Check
U0104
U0105
OK?
Yes
Check Yes
U0108
U0103
OK?
No Fail No
01/84
Yes
Program
codeplug
No
Fail
01/84
Yes
DATA on No
U0103-63
Yes
No U0104
Repair or
Replace U0104 OK?
Yes
No
U0108
OK? Replace U0108
Yes
Check
U0103
Repair or
No
Replace U0104
No Repair or
Replace U0108
Troubleshooting: Troubleshooting Chart 1-2 (2 of 3), Failure Codes
Fail
01/94
Yes
Program
codeplug
Problem
Fail
Fixed
01/94
Yes
GOTO SB9600
DATA on No DATA on
Bus Rx Chart 1-10
U0105-13
U0103-63
Yes
No
Check
DATA on
U0105
U0105-13
No
Repair or GOTO SB9600
Bus Rx Chart 1-10
WARNING
Refer to the IC Troubleshooting
Procedure before replacing any ICs.
No
2
To Sheet 3
No
Problem
Fixed
Yes Check
U0103
Yes Check
U0105
MAEPF-25947-O
6881083C20-D