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No.
Result
YES
Format data
destroyed
NO
Go to No.8-2
YES HDD
NO
Go to No.8-3
YES HDD cable
NO
Main PCB
IC3
9
.6 SERIAL COMMUNICATION DIAGNOSIS
Make sure that connecting cables, connectors and AC adapter are not loose or disconnected prior to testing.
No.
Result
YES Go to No.1-2
NO
Improper setting
YES Go to No.1-3
NO
Improper setting
YES
Check the
interface with the
other computer
NO
Main PCB
IC15
IC35
YES Go to No.2-2
NO
Connection cable
YES Go to No.2-3
NO
Improper setting
YES
Check the
interface with the
other computer
NO
Main PCB
IC15
IC35
YES Go to No.3-2
NO
Improper setting
YES Go to No.3-3
NO
Improper setting
YES Line
NO
Go to No.3-4
YES Modem
NO
Main PCB
IC15
IC35
YES Main PCB
IC15
IC35
NO
Improper setting
Source of
problem
Component
Troubleshooting
procedures
Symptom
No.
An operating system
could not be found.
8
8-3
Replace the HDD cable.
Does operation return to
normal?
8-2
Does executing FDISK
correct the problem?
8-1
Replace the HDD.
Does operation return to
normal?
No.
Symptom
Troubleshooting
procedures
Source of
problem
1-3
Does the RS-232C on the
Main PCB operate normally
under a loopback test?
Component
1-1
Is the COM port properly set?
1-2
Is the same transmission
protocol set for both the
sending and receiving units?
Does the RS-232C on the
main board operate normally
under a loopback test?
Is the loop back device
properly attached to the
connector (for an external
loop back)?
3-4
4-1
2-1
Is the connection cable a
dedicated cross-patched
cable?
2-2
Is the same transmission
protocol set for both the
sending and receiving units?
2-3
Does the RS-232C on the
Main PCB operate normally
under a reverse test?
3-3
Does the modem operate
normally under a local analog
loopback test?
3-1
Is the COM port properly set?
3-2
Is the transmission protocol
correct?
Data cannot be sent or
received.
1
2 Unit will not communicate
with another computer
when connected directly.
4 Diagnostic Test reports
problem in serial port.
Unit will not communicate
with modem.
3
20
Содержание CF-73ECLTXKM - Toughbook 73 - Pentium M 1.4...
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Страница 7: ...1 Specfication 4 ...
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Страница 11: ...3 Block Diagram System Confugration Diagram 8 ...
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Страница 56: ...1 2 3 4 5 6 7 8 9 10 11 A B C D E F G H I J CF 73E3 Printed Circuit Board Main PCB Top View ...
Страница 57: ...1 2 3 4 5 6 7 8 9 10 11 A B C D E F G H I J Main PCB Bottom View ...
Страница 58: ...1 2 3 4 5 6 7 8 9 10 11 A B C D E F G H I J VGA PCB Top View VGA PCB Bottom View ...
Страница 59: ...Rear PCB Top View Rear PCB Bottom View 1 2 3 4 5 6 7 8 9 10 11 A B C D E F G H I J ...