Gestetner G056, Service Manual

Page: 229 / 335

SERVICE CALL CONDITIONS
G073/G074 4-2 SM
4.1.2 CONTROLLER SC CODE DESCRIPTIONS
The following table describes the controller error codes. These codes are displayed
at power-on, or after the power-on self diagnostic test, if an error occurs.
Important: Always try turning the main switch off and on and check if the problem
persists.
SC Level Symptom Possible Cause/Required Action
Controller to engine communication error. 640 B
Checksum error detected
between the controller and
the engine board. •
Defective controller
•
Defective engine board
1. Check the connection between the
controller and the engine board.
2. Replace the engine board if the error is
frequent.
3. Replace the controller board if the error is
frequent.
Controller to engine communication error. 641 B
The controller receives no
response from the engine
board.
•
Defective controller
•
Defective engine board
1. Check the connection between the
controller and the engine board.
2. Replace the engine board if the error is
frequent.
3. Replace the controller board if the error is
frequent.
Engine start-up error 670 B
The ready signal from the
engine board is not detected. •
Defective engine board.
Replace the engine board.
Engine board mismatch error 671 B
Engine board and controller
mismatch detected. •
Wrong engine board installed.
•
Wrong controller board installed.
Check the type of engine board and controller
board.
Video data error 800 B
•
Defective controller
•
Defective engine board
1. Check the connection between the
controller and the engine board.
2. Replace the engine board if the error is
frequent.
System timeout error 818 B
System program timeout
error detected. •
Defective controller
Replace the controller if it occurs frequently.
Kernel abnormal end error 819 B
A HDD error or a software
error has occurred, terminating
the SCS process, gwinit
process, and finally the kernel
program. A system process
has exhausted the RAM.
•
HDD Error
Software application error RAM shortage.
⇒
Rev. 01/2003