2] Emergency History - Sony MDP-V10 Service Manual

2-4-3. [2] Emergency History

Displays the history of emergency codes occurred.
The emergency code is 1 byte data transmitted to the mode control-
ler when problems occur in the mechanism controller.
Like [64 (Minimum chapter detection)], some codes only indicate
the state code level. Codes above [80] are generated in the mode
controller itself and are not transmitted from the mechanism con-
troller.
If emergency has not occurred once since the power cord was in-
serted in the outlet, all the data will be [00].
The display format is the same as the function mode history. 16 sets
are stored in 2 lines. The emergency code immediately before the
data [FF] corresponds to the data [FE], which is closest to the data
[FF] in the function mode history.
1 2 3 4 5 6 7 8 9 101 2 3 4 5 6 7 8 9 20 1 2 3 4
1st line
2nd line E M G H I S T
6 0 7 4
3rd line
0 0 0 0
4th line
5th line
6th line
7th line
8th line
9th line
10th line
Fig. 9-4. Emergency History
According to the above example, as next to [FF] is the left edge 60,
it can be seen that the emergency occurred in the following order.
60 (Read-in detection)
n 74 (Focus drop)
n 64 (Minimum chapter detection)
n 61 (Read-out detection)
n 64 (Minimum chapter detection)
n 64 (Minimum chapter detection)
n 74 (Focus drop) (Emergency immediately before).
The following page shows the emergency code list.
S T O P
6 4 6 1 6 4 6 4 7 4 F F
0 0 0 0 0 0 0 0 0 0 0 0
9-5