2. Remove the keyboard. (Refer to section 4.2.)
3. Connect a new keyboard to the system board without installing it.
4. If normal operation is restored after connecting the new keyboard,
the original keyboard is probably defective. Install the new
keyboard.
5. If normal operation is not restored, the system board is probably
defective. Refer to section 2.4.
~~
DOC:MAINTENANCE MANUAL
MODEL:T5200
MODEL:T5200C
CHAP:2 PROBLEM ISOLATION PROCEDURES
SECT:2.8, PLASMA DISPLAY PROBLEM ISOLATION PROCEDURES
DOC_ID:2.8 T5200
LANG:ALL
TEXT:
<fig id=MMS\5200\52002_39.TIF>Page 2-39</fig>
2.8 PLASMA DISPLAY PROBLEM ISOLATION PROCEDURES
This section describes how to determine whether or not the plasma
display is defective. Start with PROCEDURE 1 and continue with other
procedures as instructed. The procedures described in this section are:
PROCEDURE 1: Display Check
PROCEDURE 2: Display Test Execution
PROCEDURE 3: PDP Connector Check
PROCEDURE 4: New PDP Connection
<fig id=MMS\5200\52002_40.TIF>Page 2-40</fig>
PROCEDURE 1
Display Check
1. Turn off the power.
2. Wait 5 seconds or more and turn on the power. After turning on the
power, the following message should be displayed on the upper
left-hand corner of the screen:
MEMORY TEST XXXXKB
3. If the above message appears, go to PROCEDURE 2.
4. If the above message does not appear:
(a) Check that the contrast is correctly adjusted.
(b) Check that CRT indicator is light. If CRT indicator is light,
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