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5-159
GY-8240UWD
GY-8240FC
Reading the SV CPU LEDs
When the SV CPU fall in the fatal state, and is unable to return statuses to upper SYS, etc., errors can be
determined by looking at the LEDs indicating the CPU state from the gap between the S tension sensor
and mechanical deck.
This is not possible with the cassette compartment mounted. To look at the LEDs, remove the cassette
compartment.
The LEDs blinking patterns of the SV1 (IC814) indicate the same as those of the SV2 (IC904).
Refer to Fig.1 for the positions of the LEDs.
Blinking pattern 0
Details: Unused interrupt
Blinking pattern 1
Details: Illegal CPU command
Blinking pattern 2
Details: CPU address error
Blinking pattern 3
Details: DMA address error
5-13. Troubleshooting
0.5 s 0.5 s
1 cycle
LED ON
OFF
LED ON
OFF
0.5 s
0.5 s
0.025 s
0.5 s
1 cycle
LED ON
OFF
1 cycle
LED ON
OFF
1 cycle
Содержание GY-8240FC
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Страница 241: ...5 25 GY 8240UWD GY 8240FC Dew sensor Tape top sensor Top view Tape end sensor 5 4 DIAG Mode Sensor Layout ...
Страница 249: ...5 33 GY 8240UWD GY 8240FC Unthread end sensor Threading ring Thread end sensor Threading motor Top view 5 4 DIAG Mode ...
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Страница 444: ...Printed in Japan Sony Corporation 2003 2 08 B P Company 2000 GY 8240FC SY GY 8240UWD SY E 9 967 913 06 ...