PT-RZ31K, PT-RS30K - Panasonic Projector Service Manual (repair manual). Page 120

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ADJ-16
SECTION 3 ADJUSTMENTS
<RZ31K/RS30K>
When the open failure occurred, the 
text characters becomes red.
In addition, "NG" is displayed on status.
[Display example]   The open failure occurs on LD1(B)-3.
1. 9. LD unit status reset
f
 The error information is stored in the memory if the projector turn on in the state of disconnecting of LD unit connectors.
   In this case, to clear the error status by using the LDResetTool. (Runtime is not reset.)
  1.  Start the LDReset Tool with the same procedure of "1.8 LD unit runtime reset". Click the [Get Information] button to dis-
play the each LD unit status.
  2. A confirmation window will be displayed when click the [LD Status Reset] button.
      Then click the [OK] button.
  3. Completion window is displayed, and click the [OK] button. Confirm the status is set to "OK".
  4.  After completing the reset, restart the projector and check the LD status with the [STATUS] menu in the service mode.
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