Sony Betacam SX DNW-A100 Maintenance Manual page 106

3-2. Details of Error Messages
(NO COMMUNICATION)
Description: Abnormality in the interface between the lower control panel's MPU (on the
KY-364 board) and SYS1 CPU (SS-63 board) was detected.
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This error message is only displayed on the time data display area in that the
abnormality of the interface is detected in the lower control panel side.
Detecting condition: When the lower control panel's MPU (IC104 on KY-364 board) is received no
interface signal from SYS1 CPU (IC704 on SS-63 board) for more than two
seconds.
Possible causes: . Cable connection defect or disconnection
. Line receiver/transceiver (IC102 on KY-364 board) trouble
. SIO (IC1102 on SS-63 board) trouble
Protecting operation: None
(WARM UP FAIL)
Descriptions: The warm up of the hard disk drives failed.
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This error message is displayed when selecting the disk (DISK PROGRAM or
DISK MASTER) as a device.
Detecting conditions: 1) When the temperature information from the temperature sensing circuit is
2 ) When the temperature information from the temperature sensing circuit or the
Possible causes: . Ambient temperature of the unit may be too low (below _10dC/14dF)
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When the ambient temperature of the unit may be too low (below _10dC/
14dF), turn off the unit's power, warm up the surroundings (beware of the
moisture condensation) before turning on the power again. Because the hard
disk drive temperature dose not reach 5dC/41dF or more, even if a hard disk
drive warming up function operates.
. Harness (to be connected SE-378 board) trouble or disconnection
. Temperature sensing circuit (on SE-378 board) trouble
. Heat-up circuit (on SE-378 board) trouble
. SS-63 board (IC100, 101, 500, 1101, 1104, 1107, 1401, etc.) trouble
Protecting operation: Disables the start of the head disk drives.
3-4
below 5dC/41dF) under the hard disk drive warming up function operates 30
minuets or more due to cold conditions.
heat-up circuit is not normal.
DNW-A100/A50/A45
DNW-A100P/A50P/A45P