Laser Optical Unit Related Service Call - Toshiba e-STUDIO520 Service Handbook

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Laser optical unit related service call

[CA10] Polygonal motor abnormality

Is the polygonal motor rotating?

Is the deformed image output?

(e-STUDIO520/523,e-STUDIO600/603,e-STUDIO720/723)

1) Check if the connector CN209 on the PLG board is disconnected.

2) Check if the harness is open circuited and the connector pin is dis-

3) Check if the following signals are transmitted on the pins of the con-

nector CN209 on the PLG board.

Pin 1: 27±1V, Pin 2: GND, Pin 3: Less than or equal to 1V (Lo),

Pin 4: Less than or equal to 0.7 V (Lo), Pin 5: Do not touch.

4) Check if the conductor pattern on the PLG board is short circuited or

open circuited.

5) Replace the laser optical unit.

6) Replace the PLG board.

(e-STUDIO850/853)

1) Check if the connector CN206 on the PLG board is disconnected.

2) Check if the harness is open circuited and the connector pin is dis-

3) Check if the following signals are transmitted on the pins of the con-

nector CN206 on the PLG board.