Toshiba FC-22 - page 160

FC-22 TROUBLESHOOTING 4 - 34 January 2000 © TOSHIBA TEC
C5A Communications error between Main-CPU and printer controller
<<For a built-in type printer controller>>
1. Check if the printer controller unit is securely mounted on the copier.
2. Check if the harness between the LGC and IMC boards is open-circuited, and if the connector
J113 on the LGC board and the connector J168 on the IMC board are disconnected.
3. Check if the harness between the switching power supply and the printer controller is open-circuited.
4. Check if the connector J710 of the switching power supply is disconnected.
5. Check the IMC and LGC boards for any open- or short-circuited conductor pattern.
6. Replace the LGC board.
7. Replace the IMC board.
<<For an external type printer controller>>
1. Check if the printer controller power is turned ON.
2. Check if the harness between the PIF board and the printer controller is open-circuited.
3. Check if the PIF board is firmly connected to the IMC board.
4. Check if the harness between the LGC and IMC boards is open-circuited, and if the connector
J113 on the LGC board and the connector J168 on the IMC board are disconnected.
5. Check the PIF, IMC and LGC boards for any open- or short-circuited conductor pattern.
6. Replace the PIF board.
7. Replace the LGC board.
8. Replace the IMC board.