Mitsubishi QJ71MB91, User Manual

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11
TROUBLESHOOTING
11.4 Error Codes
11.4.3 Error code list
11
- 38
9
P
R
OGRAM
M
ING
10
D
E
DICA
TED
INSTRUC
TI
ONS
11
TR
O
U
BLE
S
HOOTING
A
P
P
E
NDICE
S
INDE
X
Table11.16 Error code list (Continued)
(Continued on next page)
Error code Error Name Error definition Corrective Action
Occurrence
1) 2) 3) 4) 5)
73C0
H
(29632)
RAM error An error was detected in the RAM test.
Take the following steps:
• Check that the power supply module,
programmable controller CPU and
QJ71MB91 are correctly mounted on
the base unit.
• Confirm that the system is operated
within the general specifications of
the programmable controller CPU.
• Check if the power capacity is
sufficient.
• Perform the test again.
• If the above does not solve the
problem, a probable cause is a
hardware error.
Check if the programmable controller
CPU and base unit are normal
referring to the manual for each
module.
Or, replace either of the modules to
check the operation.
In case of failure, please consult your
local Mitsubishi system service
center or representative, explaining a
detailed description of the problem.
73C1
H
(29633)
ROM error An error was detected in the ROM test.
73C2
H
(29634)
Self-loopback test
error An error was detected in the self-
loopback test.
Take the following steps:
• Check if the loopback connector is
attached and if the wiring is correct.
• Check that the power supply module,
programmable controller CPU and
QJ71MB91 are correctly mounted on
the base unit.
• Confirm that the system is operated
within the general specifications of
the programmable controller CPU.
• Check if the power capacity is
sufficient.
• Perform the test again.
• If the above does not solve the
problem, a probable cause is a
hardware error.
Check if the programmable controller
CPU and base unit are normal
referring to the manual for each
module.
Or, replace either of the modules to
check the operation.
In case of failure, please consult your
local Mitsubishi system service
center or representative, explaining a
detailed description of the problem.