Brother RH-9820 Instruction Manual page 129

Communication and memory-related errors
Items with a "*" in the "Page" column should only be checked by a qualified technician.
For items with "**" appearing in the "Page" column, ask the place of purchase for advice.
Code
Connection error detected between the
main P.C. board and power supply motor
E401
P.C. board when the power was turned
on.
Communication error detected between
the main P.C. board and PMD P.C. board
E403
when the power was turned on.
Communication error between main P.C.
E410
board and panel P.C. board detected.
Communication error between main P.C.
E411 board and power supply motor P.C. board
detected.
No CF card is inserted.
E420
(No messages are displayed.)
E422 Error occurred while reading CF card.
E424 Insufficient free space on CF card.
E425 Error occurred wile writing to CF card.
Problem with flash memory on main P.C.
E430
board.
Problem with EEPROM on main P.C.
E440
board.
Model selection cannot be read from the
E450
machine head memory.
Data cannot be backed up to machine
E451
head memory.
E480 Problem with RAM on main P.C. board.
[P.C. board and connector positions]
Power supply P.C. board
Cause Remedy
Turn off the power, and then check that connector P17 on
the main P.C. board and connector P6 on the power
supply motor P.C. board are properly connected.
Turn off the power, and then check that connector P16 on
the main P.C. board and connector P1 on the PMD P.C.
board are properly connected.
Turn off the power, and then check that the operation
panel connector P1 is connected at the main P.C. board.
Turn off the power, and then check that connector P17 on
the main P.C. board and connector P6 on the power
supply motor P.C. board are properly connected.
Turn off the power, and then insert a CF card into the CF
card slot of the control box.
Check the data on the CF card.
Use a different CF card.
Use the specified type of CF card.
Turn the power off and then back on again.
Turn the power off and then back on again.
Turn off the power, and check the connection of the
machine head memory connector P3 at the power supply
motor P.C. board.
Turn the power off and then back on again.
Turn the power off and then back on again.
PMD P.C. board
RH-9820
11. ERROR CODES
Page
19*
20*
120*
19*
20*
120*
19*
120*
**
**
**
**
38
38
20*
38
38
Main P.C. board
0535B
120