Epson 4000 Service Manual - Page 188
Service Req. 00020000, Service Req. 00020002, Service Req. 00020003, Service Req. 00020009
UPC - 010343848337
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EPSON Stylus Pro 4000 Revision B SERVICE REQ. 00020000 Error meaning: NVRAM error Explanation There may be a case where the parameter data in NVRAM is broken. In such a case, this message is displayed and the printer stops operating. Cause of trouble NVRAM erase error Write error (Check in 2 bytes) Remedy Replace the C511 MAIN Board (p221) SERVICE REQ. 00020002 Error meaning: SDRAM error Explanation In memory check of SDRAM executed at power on, there may be a case where a bit error is detected. In such a case, this message is displayed and the printer stops operating. Cause of trouble SDRAM Read/Write error Remedy Replace the C511 MAIN Board (p221) SERVICE REQ. 00020003 Error meaning: BOOT program SUM error Explanation There may be a case where the boot program of firmware is broken. In such a case, this message is displayed and the printer stops operating. (Only at power on) Cause of trouble Faulty installation Defective flash memory Remedy 1. Installing Firmware (p424) 2. Replace the C511 MAIN Board (p221) SERVICE REQ. 00020009 Error meaning: Flash memory SUM error Cause of trouble Firmware has not been installed in flash memory. Flash memory is faulty. Remedy 1. Installing Firmware (p424) 2. Replace the C511 MAIN Board (p221) Troubleshooting Troubleshooting Based on Panel Messages 188