Laser Optical Unit Related Service Call - Toshiba e-studio600 Service Manual

5.1.11

Laser optical unit related service call

[CA10] Polygonal motor abnormality
Is the polygonal motor rotating?
NO Æ
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
È
YES
Is the deformed image output?
March 2005 © TOSHIBA TEC
(e-STUDIO520,e-STUDIO600,e-STUDIO720)
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-
connected.
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)
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-
connected.
3) Check if the following signals are transmitted on the pins of the con-
nector CN206 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.
5 - 71
e-STUDIO520/600/720/850 TROUBLESHOOTING
5