2.7 Keyboard and PAD I/F Troubleshooting 2 Troubleshooting Procedures
TECRA 9100 Maintenance Manual (960-347) 2-37
Procedure 2 Connector and Replacement Check
The keyboard, PAD I/F and PAD Switch may be disconnected or damaged. Disassemble the
computer following the steps described in Chapter 4, Replacement Procedures, and perform
the following checks:
1. If the keyboard malfunctions, start with Check 1.
2. If the PAD I/F malfunctions, start with Check 3.
3. If the PAD Switch malfunctions, start with Check 5.
Check 1 Make sure the keyboard cable is securely connected to the I/O board.
PJ53
I/O Board
Keyboard
Keyboard cable
If the connection is loose, reconnect firmly and repeat Procedure 2. If there is still
an error, go to Check 2.
Check 2 The keyboard or its cable may be damaged. Replace it with a new one following
the instructions in Chapter 4, Replacement Procedures. If the problem still exists,
perform Check 7.
Check 3 Make sure the PAD interface cable is firmly connected to the system board.
PAD I/F
PJ308
I/O Board
PAD I/F cable
If the connection is loose, reconnect firmly and repeat Procedure 2. If there is still
an error, go to Check 4.
Check 4 The PAD interface or its cable may be damaged. Replace it with a new one
following the instructions in Chapter 4, Replacement Procedures. If the problem
still exists, perform Check 7.
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