Sony Betacam SX DNW-A100 Maintenance Manual page 122

3-2. Details of Error Messages
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, TBC-23, or
DIF-42 board).
Sub error messages and Detecting conditions:
SV:
EQ:
DM: When the communication with DM-89 board's MPU (IC906) is in
TBC: When the communication with TBC-23 board's MPU (IC202) is in
DIF: When the communication with DIF-42 board's MPU (IC313) is in
SV:
Possible causes:
EQ:
DM: . MPU control interface circuit (IC2102, 2107, 2108 on SS-63 board)
TBC: . MPU control interface circuit (IC2102, 2107, 2108 on SS-63 board)
DIF: . MPU control interface circuit (IC2102, 2107, 2108 on SS-63 board)
Protecting operations: When the sub error message is "SV", enters the protection mode.
When it is except above, displays only this error.
3-20
When the SERVO CPU (IC103 on SS-63 board) initialization at power-
on is in abnormal state.
When the communication with EQ-56 board's MPU (IC908) is in abnor-
mal state.
abnormal state.
abnormal state.
abnormal state.
. DIP switch (S101 on SS-63 board) setting defect
. Common RAM (IC2502 on SS-63 board) or Common RAM controller
(IC2503 on SS-63 board) trouble
. Servo system (IC100 series or IC300 series on SS-63 board) trouble
. 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
trouble
. DM-89 board's MPU (IC906) trouble
trouble
. TBC-23 board's MPU (IC202) trouble
trouble
. DIF-42 board's MPU (IC313) trouble
DNW-A100/A50/A45
DNW-A100P/A50P/A45P