Details Of Error Codes - Sony HDW-750 Maintenance Manual

3-1. When Does the Error Code Appear?

3-1-2. Details of Error Codes

SLACK-10
Contents : Abnormality is detected in the drum drive voltage.
Detecting conditions : The specified time has elapsed with the drum drive voltage exceeding its rated
voltage.
Suspected cause : . Tape tension is so high that the drum motor cannot rotate.
. Drum motor drive circuit (MDR-14 board) is defective.
. Drive voltage detector circuit (MDR-14, SS-92 boards) is defective.
. Drum motor is defective.
SLACK-11
Contents : Abnormality is detected in the drum FG signal.
Detecting conditions : The drum FG counter does not start counting.
. Tape tension is so high that the drum motor cannot rotate.
Suspected cause :
. Drum motor drive circuit (MDR-14 board) is defective.
. Drum FG detector circuit (MDR-14, SS-92 boards) is defective.
. Synchronization (DVP-18 board) with the reference signal (DVP_REF_FRM/
CF) is faulty.
. Drum motor is defective.
SLACK-12
Contents : Abnormality is detected in the drum PG signal.
Detecting conditions : The drum PG signal cannot be detected even when the drum makes more than one
complete revolution.
. Drum PG detector circuit (MDR-14, SS-92 boards) is defective.
Suspected cause :
. Drum motor is defective.
SLACK-20
Contents : Abnormality is detected in the capstan drive voltage.
Detecting conditions : The specified time has elapsed with the capstan drive voltage exceeding its rated
voltage.
Suspected cause: . Mechanical load to the capstan motor is so high that the capstan motor cannot
rotate. (Mechanical reason)
. Capstan motor drive circuit (MDC-13 board) is defective.
. Drive voltage detector circuit (MDC-13, SS-92 boards) is defective.
. Capstan motor is defective.
SLACK-21
Contents : Abnormality is detected in the capstan FG signal.
Detecting conditions : The capstan FG counter does not start counting. (Only in the x1 speed or more)
Suspected cause : . Mechanical load to the capstan motor is so high that the capstan motor cannot
rotate. (Mechanical reason)
. Capstan motor drive circuit (MDC-13 board) is defective.
. Capstan FG detector circuit (MDC-13, SS-92 boards) is defective.
. Capstan motor is defective.
3-4
HDW-750/750CE V1