Ricoh D127 Field Service Manual page 181

Loopback connector is connected but
[110C] C
check results in an error.
Centronic loopback connector is not
[1120] C connected for detailed self-diagnostic
test.
Self-diagnostic Error: Clock Generator
838
A verify error occurred when setting
B
[2701]
data was read from the clock
generator via the I2C bus.
839 USB NAND Flash ROM error
839 Serial Flash access error
The result of reading and writing in
B
software status register of Serial
[9001]
Flash, the device for certification,
came to an error.
The ID of the USB NAND Flash ROM
[9101] B
cannot be read.
The USB NAND Flash ROM is
[9110] B
disconnected.
EEPROM access error
While I/O operation to EEPROM
840 B
Three times retry is ineffective after
reading error
Writing error occurs.
• ASIC device error
• IEEE1284 connector error
• Centronic loopback connector
defective
1. Replace the controller board.
• Centronic loopback connector not
connected correctly
• Centronic loopback connector
defective
• ASIC device defective
1. Replace the controller board.
• Defective clock generator
• Defective I2C bus
• Defective I2C port on the CPU
1. Replace the controller board.
• Defective Serial Flash
• Defective controller board
1. Replace the controller board.
• Defective EEPROM
SC Tables
179