Optical Communication Related Service Call - Toshiba e-STUDIO165 Service Manual

5.1.12

Optical communication related service call

[C55] ADF I/F error
[F11] ADF I/F error
(1) Check if the connector CN71 on the ADF/RADF board is disconnected.
(2) Check if the relay connector between the ADF/RADF board and the PFC board is disconnected.
(3) Check if the connector CN246 on the PFC board is disconnected.
(4) Check if the connector pins are disconnected and the harnesses are open circuited.
(5) Check if the conductor patterns on the ADF/RADF board and the MAIN board are short circuited
or open circuited.
(6) Replace the ADF/RADF board.
(7) Replace the MAIN board.
[C56] PFC board I/F error
(1) Check if the connector CN113 on the MAIN board is disconnected.
(2) Check if the connector CN112 on the switching regulator is disconnected.
(3) Check if any of the connectors CN241 and CN242 on the PFC board is disconnected.
(4) Check if the relay connector between the ADU board and the PFC board is disconnected.
(5) Check if the connector pins are disconnected and the harnesses are open circuited.
(6) Check if the conductor patterns on the PFC board and the MAIN board are short circuited or
open circuited.
(7) Replace the PFC board.
(8) Replace the MAIN board.
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