Epson Stylus Pro 7400 - Page 197

EPSON Stylus Pro 7400/7800/9400/9800 Revision B
Troubleshooting Troubleshooting based on Panel Messages 197
SERVICE CALL 00010026

Description
RTC communication error
 Explanation
The printer causes this error and stops operation when it detects that the RTC
circuit on the C594 Main Board malfunctions (operates in test mode).
 Remedy
1. Turns the printer OFF and remove the lithium battery. Leave the printer for a
few seconds and then reinsert the battery and turn the printer ON.
2. Repeat Step 1 until the printer stops causing the error at power-on.
3. Start up the printer in the Serviceman mode, and set the date and time using
the “RTC & USB ID & IEEE1394 ID” Basic Adjustment menu provided in
the Adjustment Program.
SERVICE CALL 00010027

Description
Pressure pump micro air-leak error
 Explanation
The printer causes the error and stops operation if the Pressure Sensor becomes
“LOW” state while performing a inspection of the Pressure Motor by
“1.4.6.1 Self Testing Menu (SELF TESTING)” (p.106).
This error occurs only when the printer is in the SELF TESTING mode. If a micro
air leak from the Pressure Motor is suspected because the motor works frequently
or constantly, the SELF TESTING function allows you to check it for micro air
leak before the printer causes a Service Call 00010014 for leakage of air.
 Possible Causes
 Micro air leak from the Pressure Motor.
 The Pressure Tube is disconnected.
 The pressure inside the pressurizing mechanism dropped within 90 seconds
after finishing the last pressurizing operation.
 Remedy
1. Connect the Pressure Tube.
2. Replace the PUMP ASSY., SUPPLY (p.291).
SERVICE CALL 00010028

Description
Head error
 Explanation
The printer causes this error and stops operation when it detects an undefined NMI
in the CPU or the printhead is damaged.
 Remedy
Replace the PRINT HEAD (p.267).
SERVICE CALL 0001002A

Description
CR ASIC ECU error
 Possible Causes
 Malfunction of the firmware (invalid rewriting of the register)
 The Main Board is damaged.
 Remedy
1. Installing Firmware (p.371)
2. Replace the BOARD ASSY., MAIN (p.232).
SERVICE CALL 0001002D

Description
The Cleaning Unit reached its end of life.
 Possible Causes
The pump counter reached the prescribed upper limit (182,000P).
 Remedy
Replace the Cleaning Unit and reset the life counter of the unit using the
Adjustment Program.