Nvram Error; Sdram Error; Flash Boot Sum Check Error; Unknown Nmi - Epson Stylus Pro 7700 Service Manual

Large format color inkjet printer
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Epson Stylus Pro 7700/7710/7700M/7710M/7900/7910/9700/9710/9900/9910/WT7900/WT7910/9890/9908/7890/7908
Error Details
Error Code
Failed Part
Error Name
I2C communication
error (Between
Hardware
1A50
elements on ASIC
and MAIN)
I2C communication
error (Between
1A51
Hardware
elements on ASIC
and SUB)
I2C communication
error (Between
1A52
Hardware
elements on ASIC
and SUB-B)
I2C communication
error (Between
1A53
Hardware
elements on ASIC
and SUB-C)
Memory

NVRAM error

2000
2002
Memory

SDRAM error

FLASH BOOT
2003
Memory
SUM CHECK error
200A
Memory
F/W load error
System interrupt
200D
System
watchdog time-out
error
System

Unknown NMI

200E
UART
2010
System
communication error
3000
Shut down
AC shut-off
TROUBLE SHOOTING
Description
Communication error.
Communication error.
Communication error.
Communication error.
NVRAM erase or write error has occurred.
SDRAM read/write error has occurred.
Installation of the firmware has been failed.
The Flash ROM has a defect.
Reading/decompressing the firmware has been failed.
A system failure such as CPU failure, defective cash or the like has
occurred.
The CPU has detected an unknown NMI.
Connection between the HEAD_B Board Assy and the Main Board
Assy has an abnormality.
The AC power has been shut off due to a power failure, unplugged,
power supply board failure, or main board failure or the like.
Remedies for Service Call Error
Remedy
Replace the Main Board Assy.
(See P.228)
1. Check the connection between the Sub Board Assy and the Main
Board Assy if the FFC is connected correctly (no slant connection
exists). Correct it if any abnormality exists.
2. If the printer does not recover from the error after trying 1, replace
the FFC between the Sub Board Assy and the Main Board Assy.
3. If the printer does not recover from the error even after trying 2,
replace the Sub Board Assy.
(See P.231)
Replace the Main Board Assy.
(See P.228)
Replace the Main Board Assy.
(See P.228)
Re-install the firmware.
Replace the Main Board Assy.
(See P.228)
Replace the Main Board Assy.
(See P.228)
Re-install the firmware.
Replace the Main Board Assy.
(See P.228)
Replace the Main Board Assy.
(See P.228)
Replace the Main Board Assy.
(See P.228)
Check the connection between the HEAD_B Board Assy and the Main
Board Assy.
Replace the Main Board Assy.
(See P.228)
Replace the Ink holder Board Assy (Ink Cartridge Holder L/R).
P.277, P.284)
Check the connection of the AC cable, and if there is abnormality,
correct it.
Replace the Power Supply Board Assy.
(See P.230)
Replace the Main Board Assy.
(See P.228)
Revision I
(See
147
Confidential

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