Sony SRW-5000 Maintenance Manual page 86

ERROR-08 DRUM ERROR
Description: Malfunction of drum motor was detected.
When the drum FG cycle is shifted more than about ± 20 % continuously for
Detecting condition:
more than 10 seconds as compared with during normal rotation.
Sub error message: None
. Drum motor trouble
Possible causes:
. SV CPU (IC801 on SS-95 board) trouble
. DR MPU (IC100 on DR-508 board) trouble
. Drum motor drive circuit (Q302 on DR-508 board) trouble
. Drum FG/PG waveform shaper circuit (IC303 on DR-508 board) trouble
. Assembly defect during upper drum replacement
Protecting operation: Stops the tape transport and switches to the rest state in the unthread end state.
ERROR-09 THREAD TIME OVER
Description: Malfunction of threading or unthreading operation was detected.
Detecting conditions: 1) When no operation is completed within about six seconds after operation
2) When states other than unthread end are continued for more than six seconds
Sub error message: None
. Unthread end sensor (TR-120 board) trouble
Possible causes:
. Thread end sensor (TR-120 board) trouble
. Thread end/unthread end input port (IC801 on SS-95 board) trouble
. Threading motor trouble
. Threading FG sensor (PTC-102 board) trouble
. Threading FG waveform shaper circuit (IC207 on DR-508 board) trouble
. Threading motor drive circuit (IC500 on DR-508 board) trouble
. Threading mechanism trouble
Protecting operations: Ejects the cassette during cassette insertion or ejection.
Switches to the protection mode during tape threading/unthreading.
Stops the tape transport and switches to the rest state in cases except the above.
2-8
start.
in case that the unit should be in the unthread end state.
SRW-5000/5500