3-19
DNW-A22/A22P
ERROR-99 INTERNAL INTERFACE ERROR 2
(INTERNAL I/F 2)
Description:
Abnormality was detected in the communication between SYS2 CPU (SS-63
board) and SERVO CPU (SS-63 board) or MPU (on EQ-56, DM-89, or TBC-23
board).
Sub error messages and Detecting conditions:
SV
:
When the SERVO CPU (IC103 on SS-63 board) initialization at power-
on is in abnormal state.
EQ
:
When the communication with EQ-56 board’s MPU (IC908) is in abnor-
mal state.
DM
:
When the communication with DM-89 board’s MPU (IC906) is in
abnormal state.
TBC
: When the communication with TBC-23 board’s MPU (IC202) is in
abnormal state.
Possible causes:
SV
:
.
DIP switch (S101 on SS-63 board) setting defect
.
Common RAM (IC2502 on SS-63 board) or Common RAM control-
ler (IC2503 on SS-63 board) trouble
.
Servo system (IC100 series or IC300 series on SS-63 board) trouble
EQ
:
.
MPU control interface circuit (IC2102, 2107, 2108 on SS-63 board)
trouble
.
Interface buffers (IC901, 902, 905 on EQ-56 board) trouble
.
EQ-56 board’s MPU (IC908) trouble
DM
:
.
MPU control interface circuit (IC2102, 2107, 2108 on SS-63 board)
trouble
.
DM-89 board’s MPU (IC906) trouble
TBC
:
.
MPU control interface circuit (IC2102, 2107, 2108 on SS-63 board)
trouble
.
TBC-23 board’s MPU (IC202) trouble
Protecting operations:
When the sub error message is “
SV
”, enters the protection mode.
When it is except above, displays only this error.
3-2. Details of Error Messages