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PROCEDURE 4
New Keyboard Connection
1.
Turn the POWER switch off and disconnect the ac adapter from the DC
IN 12V jack.
2.
Remove the keyboard unit. (Refer to part 4.4.)
3.
Connect the new keyboard to the system PCB.
4.
If normal operation is restored after connect the keyboard, the
previous keyboard was defective. Assemble the system.
5.
If normal operation is not restored, system PCB is probably
defective. Refer to part 2.4.
MODEL:T1200H/HB
Page 2-36
2.8 LCD ISOLATION PROCEDURES
This section describes how to determine whether the LCD is defective or
not. The procedures below are outlined in the following pages. They
should be performed in the order indicated.
PROCEDURE 1: Display Check
PROCEDURE 2: LCD Contrast Check
PROCEDURE 3: Display Test Execution
PROCEDURE 4: System PCB Connector Check
PROCEDURE 5: LCD Module Connector Check
PROCEDURE 6: New LCD
PROCEDURE 7: New LCD Module Connection
Page 2-37
PROCEDURE 1
Display Check
1.
Turn the POWER switch off.
2.
After turning the POWER switch on again, the following message
should appear in the upper left-hand corner of the screen:
Cabe Connection
MEMORY TEST XXXKB
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