Toshiba e-Studio 220P
Service checks 01
Service checks involve measuring voltages of the LVPS, HVPS, and controller card assembly. Continuity and resistance verifications are done on cables and components as required.
Note:
When looking at the printed side of a printed circuit board, connectors are designated with “J” followed by a number. Pin #1 is designated on the board by an adjacent “1” or triangle. Pin numbers index sequentially to the opposite end of the connector. See “Controller card assembly” for more information.
The controller card passes +5 V dc and +24 V dc from the LVPS to its clients. Therefore, when either voltage is missing as an output on the controller card, be sure to verify the inputs from the LVPS (J17, sockets 1 and 2 at +24 V dc and socket 5 at +5 V dc).
Cooling fan service check
FRU | Action |
---|---|
Cooling fan (fuser) Cooling fan (LVPS) |
Make sure the plugs of the cooling fan cables are properly seated.
|
Cover interlock switch service check
Note:
Make sure a print cartridge is installed and the cover closes all the way, fully engaging the cover open switch lever.
FRU | Action |
---|---|
Cover interlock switch | Disconnect the cover interlock cable from the interlock switch.
Replace the switch if faulty. |