Executing Diagnostics; Diagnostic Execution Steps; Diagnostics Functions - Epson ColorPage EPL-C8000 Service Manual

EPSON EPL-C8000

4.2.6 Executing Diagnostics

4.2.6.1 Diagnostic execution steps

Run the diagnostics by sending the following command using the
command transmission function in the Diagnostic Commander.
1. Send the DIAGON command (75h) to go into the DIAG TEST mode
where you can run the diagnostics. (The DIAGON command is one
of the Printing/Status Control Command Class commands.)
2. Set the parameters in the DIAGSTART command (90h) and send
the command to run the diagnostics. (The DIAGSTART command is
one of the Diagnostics Control Command Class commands.) By
setting a diagnostic code as a parameter, you can run various
diagnostics.
3. Set the parameters in the DIAGSTOP command (91h) and send the
command to stop the diagnostics. (The DIAGSTOP command is
one of the Diagnostics Control Command Class commands.)
4. Send the DIAGOFF command (76h) to exit the DIAG TEST mode.
(The DIAGOFF command is a Printing/Status Control command
class command.)
Chapter 4 DIAGNOSTICS

4.2.6.2 Diagnostics functions

There are a total of 8 diagnostic functions (9 if you include the
diagnostics stop function).
Table 4-11. Diagnostics Functions
Parameter Diagnostic
(HEX) function
00 Test Print
01 Digital Input Test
02 Digital Output Test
03 Analog Input Test
04 Analog Output Test
05 EEPROM Read
06 EEPROM Write
07 EEPROM Initialize
FF All Tests Stop
Description
Sets the parameters for the built-in test print.
Input test to check the sensors and switches
that have digital signals.
Output test to check the digital components
(e.g., motor, solenoid, etc.) that are controlled
by the digital signals.
Input test to check the sensor and output
monitor that has an analog signal.
Output test to check the analog components
(e.g., HVPS) that are controlled by the analog
signals.
Reads each data item from the MCU PWB
EEPROM (NVM).
Writes each data item into the MCU PWB
EEPROM (NVM).
Initializes all data in the MCU PWB EEPROM
(NVM).
Stops all diagnostic functions.
Rev. B
4-19